CN217684939U - Boiler heat recovery device - Google Patents
Boiler heat recovery device Download PDFInfo
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- CN217684939U CN217684939U CN202222048867.7U CN202222048867U CN217684939U CN 217684939 U CN217684939 U CN 217684939U CN 202222048867 U CN202222048867 U CN 202222048867U CN 217684939 U CN217684939 U CN 217684939U
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Abstract
The utility model provides a boiler heat recovery unit, include: a boiler having a first inlet and a first outlet; the first heat exchanger is provided with a second inlet and a second outlet, and the second inlet is communicated with the first outlet through the first pipeline; the air taking machine is provided with a first air inlet and an air outlet, and the air outlet is communicated with the first inlet through the second pipeline; the water tank is provided with a third inlet and a third outlet, and the third inlet is communicated with the second outlet through the third pipeline; wherein, first heat exchanger and get the fan and all be located installation space, first air intake is towards first heat exchanger in order to retrieve the heat that first heat exchanger produced. The technical scheme of this application has solved the heat exchanger of boiler among the correlation technique effectively and has produced the heat loss's problem.
Description
Technical Field
The utility model relates to a boiler heat utilizes technical field, particularly, relates to a boiler heat recovery unit.
Background
The surface sewage of the boiler is high-concentration soluble salt water, and the heat exchanger of the boiler mainly has the functions of removing suspended matters of gasified water in the boiler, reducing the alkalinity and the conductivity of boiler water and ensuring the safe and economic operation of the boiler. At the present stage, the conductivity of the local water source is higher than 650 mu s/cm, and the conductivity of the boiler water in the boiler is higher than 9000 mu s/cm after the recovery and the recycling of the condensed water. In order to reduce the conductivity, the heat exchanger of the boiler continuously works, so that the purpose of reducing the conductivity can be achieved, and the safe and economic operation of the boiler can be ensured.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a boiler heat recovery device to solve the problem of heat loss of the heat exchanger of the boiler in the related art.
In order to achieve the above object, the utility model provides a boiler heat recovery device, include: a boiler having a first inlet and a first outlet; the first heat exchanger is provided with a second inlet and a second outlet, and the second inlet is communicated with the first outlet through the first pipeline; the air taking machine is provided with a first air inlet and an air outlet, and the air outlet is communicated with the first inlet through the second pipeline; the water tank is provided with a third inlet and a third outlet, and the third inlet is communicated with the second outlet through the third pipeline; the first heat exchanger and the air taking machine are both located in the installation space, and the first air inlet faces the first heat exchanger to recover heat generated by the first heat exchanger.
Further, boiler heat recovery unit still includes the fan room of setting in boiler one side, and the inside of fan room forms installation space, and first heat exchanger still has the second air intake with the installation space intercommunication.
Further, the boiler heat recovery device further comprises a deaerator and a fourth pipeline, the deaerator is provided with a fourth inlet and a fourth outlet, the first heat exchanger is further provided with a fifth outlet, and the fourth inlet is communicated with the fifth outlet through the fourth pipeline.
Furthermore, the water tank is also provided with a fifth inlet, and the boiler heat recovery device also comprises a fifth pipeline communicated with the fifth inlet and the fourth outlet.
Furthermore, the boiler heat recovery device also comprises a second heat exchanger communicated with the fifth pipeline and the fifth inlet, the second heat exchanger is provided with a sixth inlet, a water inlet and a water outlet, the sixth inlet is communicated with the fifth pipeline, the water tank is also provided with a seventh inlet and a seventh outlet, the water inlet is communicated with the seventh outlet, and the water outlet is communicated with the seventh inlet.
Furthermore, the water tank is also provided with an eighth outlet, the boiler heat recovery device is provided with a sixth pipeline communicated with the eighth outlet, and the sixth pipeline is provided with a filter.
Furthermore, a steam trap is further arranged on the sixth pipeline, and the filter is located between the steam trap and the eighth outlet.
Further, the boiler is for a plurality of that set up side by side, and the fan is for a plurality of that set up side by side, and the second pipeline is a plurality of, and the air outlet of every fan of getting communicates through the first import of a second pipeline and a boiler that corresponds, and boiler heat recovery unit still includes the seventh pipeline, and the first export of a plurality of boilers is linked together through the seventh pipeline, and the second import communicates on the seventh pipeline through first pipeline.
Furthermore, a first valve is arranged at a second inlet of the first heat exchanger, and a second valve is arranged at a second outlet of the first heat exchanger.
Furthermore, a fifth outlet of the first heat exchanger is provided with a third valve, and a fourth outlet of the deaerator is provided with a fourth valve.
Use the technical scheme of the utility model, boiler heat recovery unit includes: boiler, first heat exchanger, first pipeline, get fan, second pipeline, water tank and third pipeline. The boiler has a first inlet and a first outlet. The first heat exchanger has a second inlet and a second outlet, the second inlet being in communication with the first outlet via a first conduit. Steam that the boiler produced flows into to first heat exchanger in through first pipeline, and first heat exchanger can carry out the heat transfer to steam. The air taking machine is provided with a first air inlet and an air outlet, and the air outlet is communicated with the first inlet through a second pipeline. The water tank is provided with a third inlet and a third outlet, and the third inlet is communicated with the second outlet through a third pipeline. And the condensed water generated after the heat exchange of the first heat exchanger flows into the water tank through a third pipeline. In this application, first heat exchanger all is located the installation space with getting the fan, and like this, the heat that first heat exchanger produced is stranded in the installation space, and first air intake is towards first heat exchanger in order to retrieve the heat that first heat exchanger produced. Like this, the heat that first heat exchanger produced can follow first air intake and get in the fan, can preheat the wind that gets into in the fan, has improved the inlet air temperature from the first import of boiler, has shortened the heat time of boiler, has reduced the cost of boiler heating. The heat that produces first heat exchanger is retrieved through boiler heat recovery unit like this, avoids producing the loss. Therefore, the technical scheme of this application has solved the problem that the heat exchanger of boiler in the correlation technique produced heat loss effectively.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a boiler heat recovery device according to the present invention.
Wherein the figures include the following reference numerals:
10. a boiler; 11. a fan chamber; 21. a first heat exchanger; 22. taking a fan; 23. a water tank; 24. a deaerator; 25. a second heat exchanger; 26. a filter; 27. a steam trap; 31. a first pipeline; 32. a second pipeline; 33. a third pipeline; 34. a fourth pipeline; 35. a fifth pipeline; 36. a sixth pipeline; 37. a seventh pipeline; 41. a first valve; 42. a second valve; 43. a third valve; 44. and a fourth valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, the boiler heat recovery apparatus of the present embodiment includes: boiler 10, first heat exchanger 21, first pipeline 31, air extractor 22, second pipeline 32, water tank 23 and third pipeline 33, boiler 10 has first import and first export. The first heat exchanger 21 has a second inlet and a second outlet, the second inlet communicating with the first outlet through a first conduit 31. The air extractor 22 has a first air inlet and an air outlet, and the air outlet is communicated with the first inlet through a second pipeline 32. The water tank 23 has a third inlet and a third outlet, the third inlet being in communication with the second outlet via a third conduit 33. In the embodiment, the first heat exchanger 21 and the air extractor 22 are both located in the installation space, and the first air inlet faces the first heat exchanger 21 to recover heat generated by the first heat exchanger 21.
By using the technical scheme of the embodiment, the steam generated by the boiler 10 flows into the first heat exchanger 21 through the first pipeline 31, the first heat exchanger 21 can exchange heat with the steam, and the condensed water generated after the heat exchange of the first heat exchanger 21 flows into the water tank 23 through the third pipeline 33. In the present embodiment, the first heat exchanger 21 and the air extractor 22 are both located in the installation space, so that the heat generated by the first heat exchanger 21 is trapped in the installation space, and the first air inlet is directed toward the first heat exchanger 21 to recover the heat generated by the first heat exchanger 21. Like this, the heat that first heat exchanger 21 produced can get into to getting in the fan 22 from first air intake, can preheat the wind that gets in the fan 22, has improved the air inlet temperature from the first import of boiler 10, has shortened the heat time of boiler, has reduced the cost of boiler heating. In this way, the heat generated by the first heat exchanger 21 is recovered by the boiler heat recovery device, and the loss is avoided. Therefore, the technical scheme of the embodiment effectively solves the problem that the heat exchanger of the boiler in the related art generates heat loss.
As shown in fig. 1, in order to install the first heat exchanger 21 and the air extractor 22 in one installation space, the boiler heat recovery apparatus further includes a fan housing 11 provided at one side of the boiler 10, and the inside of the fan housing 11 forms an installation space. The first heat exchanger 21 further has a second air inlet communicating with the installation space.
The fan room is a house structure. The water tank is provided with the float switch, so that the liquid level standard in the water tank can be ensured. The water tank is a softened water tank.
As shown in fig. 1, the boiler heat recovery device further includes a deaerator 24 and a fourth pipe 34. The deaerator 24 has a fourth inlet and a fourth outlet, and the first heat exchanger 21 also has a fifth outlet, and the fourth inlet is communicated with the fifth outlet through a fourth pipeline 34. The fourth line 34 is arranged to vent the deaerator 24 of the dispersed steam.
The inventor finds that the deaerator 24 carries a water deoxidizing task of the boiler 10, the water temperature is required to be 100-104 ℃, a part of secondary scattered steam can be generated due to the fact that the temperature exceeds 100 ℃, the scattered steam generated in the past is directly discharged into the atmosphere, the internal pressure of the deaerator 24 is guaranteed to be in a normal pressure state, and the deaerator 24 is guaranteed to run safely. Because the secondary scattered steam has a part of heat, and the condensate water is qualified softened water, the use of the boiler 10 can be completely met, and the secondary scattered steam generated by the deaerator 24 is directly discharged into the atmosphere, which is waste.
In order to solve the above problem, in the present embodiment, the water tank 23 further has a fifth inlet, and the boiler heat recovery device further includes a fifth pipeline 35 communicating with the fifth inlet and the fourth outlet. The scattered steam of deaerator 24 can be to the water heating in the water tank 23, transfers the temperature of water, reduces deaerator scattered steam consumption, owing to retrieved the heat of the scattered steam of deaerator 24, reaches energy-conserving effect of recycling.
As shown in fig. 1, the boiler heat recovery device further comprises a second heat exchanger 25 communicating with a fifth conduit 35 and a fifth inlet. The second heat exchanger 25 has a sixth inlet, a water inlet and a water outlet, the sixth inlet is communicated with the fifth pipeline 35, the water tank 23 further has a seventh inlet and a seventh outlet, the water inlet is communicated with the seventh outlet, and the water outlet is communicated with the seventh inlet. The scattered steam of the deaerator 24 enters the second heat exchanger 25 through the fifth pipeline 35 for heat exchange, and the heat generated in the heat exchange process of the second heat exchanger 25 can adjust the temperature of water so as to reduce the heating amount of the deaerator and achieve the energy-saving effect. The fourth and fifth pipelines 34, 35 described above are preferably copper pipelines.
As shown in fig. 1, the water tank 23 further has an eighth outlet, and a sixth pipeline 36 for communicating the boiler heat recovery device with the eighth outlet, and the sixth pipeline 36 is provided with a filter 26. The defective condensed water remaining in the water tank can be filtered while passing through the filter 26.
As shown in fig. 1, a steam trap 27 is further provided on the sixth line 36, and the filter 26 is located between the steam trap 27 and the eighth outlet. In this way, steam trap 27 can block steam from draining off inappropriate condensate.
As shown in fig. 1, the improper condensate in the sixth pipeline 36 can be discharged to the drain tank after passing through the steam trap 27 and the filter 26.
As shown in fig. 1, in order to improve the working efficiency of the boiler, the boilers 10 are arranged side by side, the air extracting fans 22 are arranged side by side, the second pipelines 32 are arranged side by side, the air outlet of each air extracting fan 22 is communicated with the first inlet of a corresponding boiler 10 through one second pipeline 32, the boiler heat recovery device further comprises a seventh pipeline 37, the first outlets of the boilers 10 are communicated through the seventh pipeline 37, and the second inlets are communicated on the seventh pipeline 37 through the first pipeline 31.
In the present embodiment, the first, second, third, sixth and seventh pipelines 31, 32, 33, 36 and 37 are all preferably 304 stainless steel pipes, which reduces corrosion, and the use of perforated pipes can reduce noise and vibration caused by steam shock.
As shown in fig. 1, a first valve 41 is provided at the second inlet of the first heat exchanger 21 in order to control the flow rate of steam at the second inlet, and a second valve 42 is provided at the second outlet of the first heat exchanger 21 in order to control the flow rate of condensed water at the second outlet.
As shown in fig. 1, a third valve 43 is provided at the fifth outlet of the first heat exchanger 21 to control the flow rate of the steam at the fifth outlet, and a fourth valve 44 is provided at the fourth outlet of the deaerator 24 to control the flow rate of the steam at the fourth outlet.
The first valve 41, the second valve 42, the third valve 43, and the fourth valve 44 are preferably solenoid valves.
Before the boiler heat recovery device of this embodiment is not used, the first pipeline 31 is a DN20 pipeline. The opening degree of the first valve 41 is 1/20.
Heat loss of the first heat exchanger 21: 18.5 kilograms of sensible heat of the pressure furnace water is 903kJ/kg. The first valve 41 on the DN20 pipeline has a Kv value of 6.6 and an opening of 1/20 of 0.33. The discharge capacity of 18.5 kilograms is 0.30m 3 The calculation of/h:
annual heat loss Q =903 × 0.3 × 1000 × 24 × 360=2340576000kj.
1m 3 The natural gas heat of 8600kcal is 8600 × 4.19=36034kj.
The annual loss of natural gas is: 2340576000/36034=64954m 3 。
After the boiler heat recovery device of the present embodiment is used, the air introduced into the air intake fan 22 is preheated by the heat generated by the first heat exchanger 21. Calculating according to the annual heat loss amount of the temperature 60 ℃ after heat exchange: q = C (specific heat capacity) × M (mass) × T (temperature). That is, Q =0.3 × 1000 × 24 × 360 × 4.2 × 60=653184000kj.
1m 3 The natural gas heat is 8600 kcal:
8600×4.19＝36034KJ。
the annual loss of natural gas is:
653184000/36034＝18126m 3 。
after the boiler heat recovery device of the present example was used, 64954m 3 -18126m 3 ＝46828m 3 。
And (3) natural gas capital saving: 46828 × 3.42=160151 yuan.
After the boiler heat recovery device of the embodiment is used, the temperature of water can be adjusted by heat generated in the heat exchange process of the second heat exchanger 25 so as to reduce the heating amount of the deaerator and achieve the energy-saving effect.
The specific benefits are as follows: the water temperature of the water tank is increased from 10 ℃ to 26 ℃ and increased by 16 ℃ through observation, and the income is calculated according to the daily water supplement amount of 150 tons. Annual heat yield Q = C × M × T:
Q＝150×1000×360×4.2×16＝3628800000kJ。
1m 3 the natural gas heat is 8600 kcal:
8600×4.19＝36034KJ。
and (3) fuel gas saving: 3628800000kJ/36034KJ =100704m 3 The natural gas saves 34.4 ten thousand yuan.
The total capital saving: 16.0151+34.4=50.4151 ten thousand yuan.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A boiler heat recovery device, comprising:
a boiler (10) having a first inlet and a first outlet;
a first heat exchanger (21) and a first conduit (31), the first heat exchanger (21) having a second inlet and a second outlet, the second inlet communicating with the first outlet through the first conduit (31);
the air intake device comprises a fan (22) and a second pipeline (32), wherein the fan (22) is provided with a first air inlet and an air outlet, and the air outlet is communicated with the first inlet through the second pipeline (32);
a water tank (23) and a third conduit (33), the water tank (23) having a third inlet and a third outlet, the third inlet communicating with the second outlet through the third conduit (33);
wherein the first heat exchanger (21) and the air extractor (22) are both positioned in an installation space, and the first air inlet faces the first heat exchanger (21) to recover heat generated by the first heat exchanger (21).
2. The boiler heat recovery device according to claim 1, further comprising a fan chamber (11) provided at one side of the boiler (10), an inside of the fan chamber (11) forming the installation space, and the first heat exchanger (21) further having a second air intake communicating with the installation space.
3. The boiler heat recovery device according to claim 1, further comprising a deaerator (24) and a fourth pipeline (34), the deaerator (24) having a fourth inlet and a fourth outlet, the first heat exchanger (21) further having a fifth outlet, the fourth inlet being in communication with the fifth outlet through the fourth pipeline (34).
4. The boiler heat recovery device according to claim 3, characterized in that the water tank (23) further has a fifth inlet, and the boiler heat recovery device further comprises a fifth pipe (35) communicating with the fifth inlet and the fourth outlet.
5. The boiler heat recovery device according to claim 4, further comprising a second heat exchanger (25) in communication with the fifth pipeline (35) and the fifth inlet, the second heat exchanger (25) having a sixth inlet in communication with the fifth pipeline (35), a water inlet in communication with the fifth pipeline (35), and a water drain, the water tank (23) further having a seventh inlet in communication with the seventh outlet, and a seventh outlet in communication with the water drain.
6. A boiler heat recovery device according to claim 3, characterized in that the water tank (23) also has an eighth outlet, and that the boiler heat recovery device is provided with a sixth pipe (36) in communication with the eighth outlet, and that the sixth pipe (36) is provided with a filter (26).
7. The boiler heat recovery device according to claim 6, characterized in that a steam trap (27) is further provided on the sixth pipe (36), and the filter (26) is located between the steam trap (27) and the eighth outlet.
8. The boiler heat recovery device according to claim 1, wherein the boilers (10) are plural in number arranged side by side, the air extracting fans (22) are plural in number arranged side by side, the second pipe (32) is plural, the air outlet of each air extracting fan (22) is communicated with the first inlet of a corresponding one of the boilers (10) through one of the second pipes (32), the boiler heat recovery device further comprises a seventh pipe (37), the first outlets of the boilers (10) are communicated with each other through the seventh pipe (37), and the second inlets are communicated with the seventh pipe (37) through the first pipe (31).
9. The boiler heat recovery device according to claim 1, characterized in that a first valve (41) is provided at the second inlet of the first heat exchanger (21) and a second valve (42) is provided at the second outlet of the first heat exchanger (21).
10. The boiler heat recovery device according to claim 3, characterized in that a third valve (43) is provided at the fifth outlet of the first heat exchanger (21) and a fourth valve (44) is provided at the fourth outlet of the deaerator (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222048867.7U CN217684939U (en) | 2022-08-04 | 2022-08-04 | Boiler heat recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222048867.7U CN217684939U (en) | 2022-08-04 | 2022-08-04 | Boiler heat recovery device |
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| CN217684939U true CN217684939U (en) | 2022-10-28 |
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| CN202222048867.7U Active CN217684939U (en) | 2022-08-04 | 2022-08-04 | Boiler heat recovery device |
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