CN213778733U - Heat pipe low-temperature economizer - Google Patents
Heat pipe low-temperature economizer Download PDFInfo
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- CN213778733U CN213778733U CN202022761158.4U CN202022761158U CN213778733U CN 213778733 U CN213778733 U CN 213778733U CN 202022761158 U CN202022761158 U CN 202022761158U CN 213778733 U CN213778733 U CN 213778733U
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Abstract
The utility model belongs to the technical field of coal economizer, in particular to a heat pipe low-temperature coal economizer, which comprises a coal economizer body, wherein a flue gas inlet and a flue gas outlet are arranged on the coal economizer body, a water jacket is wrapped on the outer side surface of the coal economizer body, a plurality of layers of superconducting heat pipes are staggered at different heights in the coal economizer body, the superconducting heat pipes are arranged in a downward inclination manner, and the upper ends of the superconducting heat pipes are arranged in the water jacket; the top of economizer body includes upper wall and lower floor wall, forms hollow accommodation space between upper wall and the lower floor wall, and it is provided with a plurality of purge holes to gather on the lower floor wall, and the air inlet on the upper wall passes through the pipeline to be connected with the high pressure gas source, and the bottom in the economizer body is provided with the deashing mouth. The economizer adopts a heat pipe technology, realizes high-efficiency heat exchange, has large reduction range of the exhaust gas temperature of a boiler and high economic benefit of a power plant, and can have the function of low-temperature corrosion resistance and greatly prolong the service life by arranging the enamel coating on the inner walls of the heat pipe and the economizer.
Description
Technical Field
The utility model belongs to the technical field of the economizer, especially, relate to a heat pipe low temperature economizer.
Background
The coal economizer is a device which is arranged at the lower part of a flue at the tail part of a boiler and is used for recovering the waste heat of the discharged smoke. The economizer can utilize the waste heat of the flue gas to heat boiler feed water into a heating surface of saturated water under the pressure of a steam drum, and the economizer is called as the economizer because the economizer absorbs the heat of high-temperature flue gas, reduces the smoke exhaust temperature of the flue gas, saves energy and improves efficiency. The coal economizer is mainly suitable for the industry, and is gradually popularized to the agriculture and the related industries for business.
However, the traditional economizer in the prior art has the problems of low heat exchange efficiency, small reduction range of the exhaust gas temperature of the boiler, easy generation of acid, rain and dew corrosion on the heat exchange surface due to long-term use and the like, and in addition, the economizer in the prior art also has the problem of difficult cleaning of accumulated dust.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat pipe low temperature economizer, this economizer have adopted the heat pipe technique, have realized high-efficient heat transfer, and the boiler exhaust gas temperature range of reduction is big, and the economic income of power plant is high, and through setting up enamel coating at heat pipe and economizer inner wall, can make it have low temperature corrosion resistant function moreover, life prolongs greatly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a flue gas inlet is formed in the upper portion of an economizer body, a flue gas outlet is formed in the lower portion of the economizer body, a water jacket is wrapped on the outer side face of the economizer body, multiple layers of superconducting heat pipes are arranged in the economizer body in a staggered mode at different heights, the superconducting heat pipes are arranged in a downward inclined mode, and the upper ends of the superconducting heat pipes are arranged in the water jacket; the top of economizer body includes upper wall and lower floor's wall, form hollow accommodation space between upper wall and the lower floor's wall, it is provided with a plurality of purge holes to gather on the lower floor's wall, the air inlet on the upper wall passes through the pipeline and is connected with the high pressure gas source, this internal bottom of economizer is provided with the deashing mouth.
Economizer adopt the heat pipe technique, the heat pipe technique is that special heat-conduction working medium is filled into in a plurality of single independent vacuum tubes, it vaporizes rapidly after being heated and rises to the heat absorption end, liquefies rapidly again and flows back after giving cold working medium to the heat transfer, so circulation phase transition realizes the heat exchange. The utility model discloses utilize the heat pipe technique to realize high-efficient heat transfer, the boiler exhaust gas temperature range of reduction is big, and the economic income of power plant is high. Through the staggered arrangement of the multiple layers of superconducting heat pipes at different heights in the economizer body, the heat exchange area between the heating pipes and the flue gas can be greatly increased, the flue gas can also be baffled, and the heat exchange time between the flue gas and the heat pipes is prolonged. And the heat pipe is arranged in a downward inclined mode, so that the effect of conveniently cleaning dust can be achieved. After a period of time, when ash is needed to be removed, high-pressure air firstly enters a hollow accommodating space between the two layers of walls, then is uniformly blown out of the coal economizer body from a plurality of blowing holes densely distributed on the lower layer of wall, blows the superconducting heat pipe and the inner wall of the coal economizer body, and then is cleaned through an ash removing opening.
Preferably, the length of the superconducting heat pipe in the economizer body is larger than the inner radius of the economizer body, so that the superconducting heat pipe has a better baffling effect on flue gas and prolongs the heat exchange time between the flue gas and the heat pipe.
Preferably, the superconducting heat pipe is inclined downwards by an angle of 30 °.
As preferred, superconducting heat pipe with economizer body inner wall all is provided with enamel coating, and the low temperature flue gas easily produces sour rain and dew and corrodes, and long-term the use leads to the heat-transfer face low temperature easily to produce sour rain and dew and corrodes the scheduling problem, so the utility model discloses set up enamel coating at heat pipe and economizer inner wall, make it have the function of resisting low temperature corrosion, life prolongs greatly.
Preferably, a baffling baffle is arranged in the water jacket, so that the baffling effect on water can be achieved, and the heat exchange time between the water and the heat pipe is prolonged.
Preferably, the bottom in the economizer body is provided with an ash collecting cavity, the ash collecting cavity is in an inverted cone shape, and the ash cleaning port is arranged at the center of the ash collecting cavity, so that ash collection and ash cleaning are more convenient.
Preferably, a filter screen is arranged below the blowing holes in the economizer body, so that dust in the flue gas can be filtered, and the blowing holes are prevented from being blocked by the dust.
Advantageous effects
The utility model discloses a heat pipe low temperature economizer, this heat pipe low temperature economizer have following advantage:
(1) the reduction range of the exhaust gas temperature of the boiler is large, and the economic benefit of the power plant is high.
The heat pipe low-temperature economizer can reduce the exhaust gas temperature to about 80 ℃, the temperature is the optimal reaction temperature of the desulfurizing tower, and the standard coal consumption rate of the unit power supply is reduced by more than 1.5 g/kw.h.
(2) The enamel coating is resistant to low-temperature corrosion and long in service life.
The low temperature flue gas easily produces sour rain and dew and corrodes, and long-term use leads to the heat-transfer face low temperature easily to produce sour rain and dew and corrodes the scheduling problem, so the utility model discloses set up enamel coating at heat pipe and economizer inner wall, make it have the function of resisting low temperature corrosion, life prolongs greatly.
(3) The heat pipe technology is utilized to realize high-efficiency heat exchange.
Low temperature economizer adopt the heat pipe technique, the heat pipe is heated and is releasing heat between the phase transition completion heat transfer process through self intraductal working medium, consequently need not external source consumption of power. Because the heat pipe heat exchanger exchanges heat through phase change of working media in the pipe without a rotating device, the heat exchange system has no hidden trouble of air leakage, and can avoid secondary pollution to the environment of a working area.
(4) By arranging the soot blower, the soot can be periodically cleaned, and the soot is not easy to accumulate.
Drawings
FIG. 1 is a schematic structural diagram of a heat pipe low-temperature economizer described in embodiment 1 of this patent;
in the figure, 1: an economizer body; 2: a flue gas inlet; 3: a flue gas outlet; 4: a water jacket; 5: a superconducting heat pipe; 6: an upper wall; 7: a lower wall; 8: a purge hole; 9: an air inlet; 10: a source of high pressure gas; 11: cleaning the ash hole; 12: a baffle plate; 13: a dust collecting cavity; 14: a valve; 15: and (4) a filter screen.
Detailed Description
Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.
The following examples are given by way of illustration of embodiments of the invention and are not intended to limit the invention, and those skilled in the art will appreciate that modifications within the scope of the invention do not depart from the spirit and scope of the invention.
Example 1
As shown in fig. 1, a flue gas inlet 2 is arranged at the upper part of an economizer body 1, a flue gas outlet 3 is arranged at the lower part of the economizer body, a water jacket 4 is wrapped at the outer side surface of the economizer body, multiple layers of superconducting heat pipes 5 are arranged in the economizer body at different heights in a staggered manner, the superconducting heat pipes are arranged in a downward inclined manner, and the upper ends of the superconducting heat pipes are arranged in the water jacket; the top of economizer body includes upper wall 6 and lower floor's wall 7, form hollow accommodation space between upper wall and the lower floor's wall, it is provided with a plurality of purge holes 8 to gather on the lower floor's wall, air inlet 9 on the upper wall passes through the pipeline and is connected with high-pressure gas source 10, bottom in the economizer body is provided with deashing mouth 11.
Economizer adopt the heat pipe technique, the heat pipe technique is that special heat-conduction working medium is filled into in a plurality of single independent vacuum tubes, it vaporizes rapidly after being heated and rises to the heat absorption end, liquefies rapidly again and flows back after giving cold working medium to the heat transfer, so circulation phase transition realizes the heat exchange. The utility model discloses utilize the heat pipe technique to realize high-efficient heat transfer, the boiler exhaust gas temperature range of reduction is big, and the economic income of power plant is high. Through the staggered arrangement of the multiple layers of superconducting heat pipes at different heights in the economizer body, the heat exchange area between the heating pipes and the flue gas can be greatly increased, the flue gas can also be baffled, and the heat exchange time between the flue gas and the heat pipes is prolonged. And the heat pipe is arranged in a downward inclined mode, so that the effect of conveniently cleaning dust can be achieved. After a period of time, when ash is needed to be removed, high-pressure air firstly enters a hollow accommodating space between the two layers of walls, then is uniformly blown out of the coal economizer body from a plurality of blowing holes densely distributed on the lower layer of wall, blows the superconducting heat pipe and the inner wall of the coal economizer body, and then is cleaned through an ash removing opening.
The length of the superconducting heat pipe in the economizer body is larger than the inner radius of the economizer body, so that the superconducting heat pipe has a better baffling effect on flue gas and prolongs the heat exchange time between the flue gas and the heat pipe. The superconducting heat pipe is inclined downwards by an angle of 30 degrees.
Superconducting heat pipe with economizer body inner wall all is provided with enamel coating, and the low temperature flue gas easily produces sour rain and dew and corrodes, uses for a long time to lead to the heat-transfer surface low temperature to produce sour rain and dew to corrode the scheduling problem easily, so the utility model discloses set up enamel coating at heat pipe and economizer inner wall, make it have the function of resisting low temperature corrosion, life lengthens greatly.
A baffling baffle 12 is arranged in the water jacket, so that the baffling effect on water can be achieved, and the heat exchange time between the water and the heat pipe is prolonged.
The bottom in the economizer body is provided with an ash collecting cavity 13, the ash collecting cavity is in an inverted cone shape, and the ash cleaning port is arranged at the center of the ash collecting cavity, so that ash collection and ash cleaning are more convenient. A filter screen 15 is arranged below the blowing holes in the coal economizer body and can filter dust in flue gas and prevent the dust from blocking the blowing holes.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (7)
1. The utility model provides a heat pipe low temperature economizer, includes the economizer body, the upper portion of economizer body is provided with the gas inlet, the lower part of economizer body is provided with exhanst gas outlet, its characterized in that: the outer side surface of the coal economizer body is wrapped with a water jacket, a plurality of layers of superconducting heat pipes are arranged in the coal economizer body at different heights in a staggered mode, the superconducting heat pipes are arranged in a downward inclined mode, and the upper ends of the superconducting heat pipes are arranged in the water jacket; the top of economizer body includes upper wall and lower floor's wall, form hollow accommodation space between upper wall and the lower floor's wall, it is provided with a plurality of purge holes to gather on the lower floor's wall, the air inlet on the upper wall passes through the pipeline and is connected with the high pressure gas source, this internal bottom of economizer is provided with the deashing mouth.
2. The heat pipe low temperature economizer of claim 1, wherein: the length of the superconducting heat pipe in the economizer body is larger than the inner radius of the economizer body.
3. The heat pipe low temperature economizer of claim 2, wherein: the superconducting heat pipe is inclined downwards by an angle of 30 degrees.
4. The heat pipe low temperature economizer of claim 1, wherein: and enamel coatings are arranged on the inner walls of the superconducting heat pipe and the economizer body.
5. The heat pipe low temperature economizer of claim 1, wherein: and a baffling baffle is arranged in the water jacket.
6. The heat pipe low temperature economizer of claim 1, wherein: the bottom in the economizer body is provided with an ash collecting cavity, the ash collecting cavity is in an inverted cone shape, and the ash cleaning port is arranged at the center of the ash collecting cavity.
7. The heat pipe low temperature economizer of claim 1, wherein: and a filter screen is arranged below the blowing hole in the economizer body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022761158.4U CN213778733U (en) | 2020-11-25 | 2020-11-25 | Heat pipe low-temperature economizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022761158.4U CN213778733U (en) | 2020-11-25 | 2020-11-25 | Heat pipe low-temperature economizer |
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| CN213778733U true CN213778733U (en) | 2021-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115191697A (en) * | 2022-08-12 | 2022-10-18 | 高梵(浙江)信息技术有限公司 | Novel down filling gun based on down jacket is prevented boring in preparation |
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2020
- 2020-11-25 CN CN202022761158.4U patent/CN213778733U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115191697A (en) * | 2022-08-12 | 2022-10-18 | 高梵(浙江)信息技术有限公司 | Novel down filling gun based on down jacket is prevented boring in preparation |
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