CN108800090B - Main furnace of biomass evaporator - Google Patents
Main furnace of biomass evaporator Download PDFInfo
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- CN108800090B CN108800090B CN201810661055.5A CN201810661055A CN108800090B CN 108800090 B CN108800090 B CN 108800090B CN 201810661055 A CN201810661055 A CN 201810661055A CN 108800090 B CN108800090 B CN 108800090B
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- water
- collecting cavity
- heat conduction
- pipe
- annular gap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/26—Steam-separating arrangements
- F22B37/30—Steam-separating arrangements using impingement against baffle separators
Abstract
The invention provides a main furnace of a biomass evaporator, belonging to the technical field of machinery. It has solved the great problem of current boiler steam water content. The main furnace of the biomass evaporator comprises an upper support with a gas collecting cavity and a lower support with a water collecting cavity, wherein an exhaust port is arranged on one side of the upper support, a water inlet is arranged on one side of the lower support, a plurality of heat conduction pipes are vertically fixed between the upper support and the lower support, two ends of each heat conduction pipe penetrate through the gas collecting cavity and the water collecting cavity respectively and are communicated with the outside, a finned pipe is sleeved and fixed outside each heat conduction pipe, an annular gap is formed between each finned pipe and each heat conduction pipe, two ends of the annular gap are communicated with the gas collecting cavity and the water collecting cavity respectively, a water retaining ring is sleeved and fixed outside each heat conduction pipe and is located above the annular gap and located in the gas collecting cavity, the water retaining ring is opposite to the annular gap, a water outlet is formed in the upper support, the position of the. The invention has the advantage of low water content of steam.
Description
Technical Field
The invention belongs to the field of energy conservation and environmental protection, and relates to a biomass evaporator, in particular to a main furnace of the biomass evaporator.
Background
The main furnace of the existing biomass evaporator is a double-pipe boiler disclosed in a Chinese patent library (application number: 2006100168949 comprises water pump, combustion chamber, water chamber, furnace base, smoke outlet, water inlet, and hot water or steam outlet, wherein a heat exchange chamber is arranged above the combustion chamber and the water chamber, and a hot smoke collecting chamber and a hot water steam chamber are arranged above the heat exchange chamber; the heat exchange chamber is internally provided with a sleeve which is vertically and longitudinally and uniformly arranged, the sleeve is composed of an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, a gap is reserved between the outer wall of the inner pipe and the inner wall of the outer pipe to form a water and steam channel, and the water chamber is communicated with the hot water and steam chamber through the water and steam channel formed between the inner pipe and the outer pipe; the combustion chamber is communicated with the hot flue gas collecting chamber through an inner pipe; the central part of the heat exchange chamber is provided with a semi-open central cylinder, the hot flue gas collection chamber is communicated with the heat exchange chamber through the semi-open central cylinder, and the heat exchange chamber is communicated with the flue gas outlet.
The boiler can effectively improve the evaporation speed of water because the clearance is smaller by forming the clearance for flowing water between the inner pipe and the outer pipe. However, this boiler still has a problem: the steam discharged from the upper end of the gap contains partial water, and the water content of the finally discharged steam is larger because a corresponding water retaining structure is not arranged on the boiler.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a main furnace of a biomass evaporator, and solves the technical problem of reducing the water content in steam.
The purpose of the invention can be realized by the following technical scheme: a main furnace of a biomass evaporator comprises an upper support with a gas collecting cavity and a lower support with a water collecting cavity, wherein one side of the upper support is provided with an exhaust port which enables the gas collecting cavity to be communicated with the outside, one side of the lower support is provided with a water inlet which enables the water collecting cavity to be communicated with the outside, a plurality of heat conducting pipes are vertically fixed between the upper support and the lower support, two ends of each heat conducting pipe respectively penetrate through the gas collecting cavity and the water collecting cavity and are communicated with the outside, each heat conducting pipe is externally sleeved with and fixed with a finned pipe, an annular gap is formed between each finned pipe and the heat conducting pipe, two ends of the annular gap are respectively communicated with the gas collecting cavity and the water collecting cavity, the main furnace is characterized in that each heat conducting pipe is externally sleeved with a water retaining ring which is positioned above the annular gap and is positioned in the gas collecting cavity, the water retaining ring is opposite to the annular gap, and the upper, the position of the water retaining ring is higher than that of the water outlet, and the position of the water retaining ring is lower than that of the air outlet; the water retaining ring is composed of a rubber ring, an upper ring body and a lower ring body, the upper ring body, the rubber ring and the lower ring body are all sleeved outside the heat conducting pipe and are sequentially distributed from top to bottom, the upper ring body is fixedly connected with the heat conducting pipe, two ends of the rubber ring are fixedly connected with the upper ring body and the lower ring body respectively, and the lower ring body can slide along the axial direction of the heat conducting pipe.
When the biomass combustion furnace is used, high-temperature flue gas generated by biomass combustion enters through the lower end opening of the heat conduction pipe and is finally discharged through the upper end opening of the heat conduction pipe; water enters the water collecting cavity through the water inlet and then enters the annular gap; in the process that water flows in the annular gap, the water is contacted with the pipe wall of the heat conduction pipe and is converted into water vapor when being heated, and the water vapor rises to enter the gas collection cavity and then is discharged through the gas outlet.
Steam discharges the in-process to the gas collecting chamber from the annular gap, can bump with the manger plate ring, and at this moment, water among the steam can the downstream, and gas can turn and continue upward movement to realize better gas-water separation effect, reduce the water content among the steam.
Under the blocking of the water retaining ring, part of water in the water vapor can enter the annular gap again and contact with high temperature for gasification, so that the utilization rate of the water is improved.
The water blocked by the water blocking ring and gathered in the gas collection cavity can be discharged through the water outlet.
In foretell biomass evaporator's main furnace, the both ends face of rubber ring on all be equipped with the constant head tank, go up the ring body and link firmly with the rubber ring mutually through the mode that bonds with lower ring body in two constant head tanks of ring body joint respectively.
In the main furnace of the biomass evaporator, the inner side wall of the rubber ring is matched with the outer side wall of the heat conduction pipe, and the inner side wall of the rubber ring is attached to the outer side wall of the heat conduction pipe to form sealing.
In the main furnace of the biomass evaporator, the outer diameter of the water retaining ring is larger than the inner diameter of the finned tube.
In the above main furnace of the biomass evaporator, the main furnace further comprises a water pump, and an inlet of the water pump is communicated with the water outlet through a pipeline.
The water in the gas collecting cavity is actively pumped by the water pump, so that the advantage of high drainage efficiency is achieved, the influence of excessive accumulated water on normal exhaust is effectively avoided, and the working stability of the main furnace is improved.
In the above main furnace of the biomass evaporator, one part of the heat conduction pipes are distributed in the circumferential direction and constitute a first heat conduction unit, the other part of the heat conduction pipes are also distributed in the circumferential direction and constitute a second heat conduction unit, and the first heat conduction unit and the second heat conduction unit are coaxially arranged; the water collecting cavity is annular and is positioned between the first heat conducting unit and the second heat conducting unit, the lower end of the annular gap is closed, water inlets which enable the annular gap to be communicated with the water collecting cavity are formed in each finned tube, and all the water inlets are opposite to the water collecting cavity.
In the above-mentioned main furnace of the biomass evaporator, the positions of the heat conduction pipes in the first heat conduction unit and the second heat conduction unit are staggered.
By adopting the design, the water can enter the annular gaps in equal quantity, the equal quantity of water can be treated in each annular gap, the water conversion rate in each annular gap is kept the same so as to be convenient for control and adjustment, and the aim of reducing the water content in the water vapor is stably realized.
Compared with the prior art, the main furnace of the biomass evaporator has the following advantages:
1. steam discharges the in-process to the gas collecting chamber from the annular gap, can bump with the manger plate ring, and at this moment, water among the steam can the downstream, and gas can turn and continue upward movement to realize better gas-water separation effect, reduce the water content among the steam.
2. Under the blocking of the water retaining ring, part of water in the water vapor can enter the annular gap again and contact with high temperature for gasification, so that the utilization rate of the water is improved.
3. The water in the gas collecting cavity is actively pumped by the water pump, so that the advantage of high drainage efficiency is achieved, the influence of excessive accumulated water on normal exhaust is effectively avoided, and the working stability of the main furnace is improved.
4. The water retaining ring is composed of an upper ring body, a rubber ring and a lower ring body, and the elasticity of the rubber ring is utilized to buffer the water vapor impacting the water retaining ring so as to reduce the kinetic energy of the water vapor, so that the water in the water vapor is easier to fall off in the rising process, and the water content in the water vapor is further reduced.
Drawings
FIG. 1 is a schematic view showing the structure of a main furnace of the biomass vaporizer.
FIG. 2 is a schematic sectional view of the main furnace of the biomass evaporator.
Fig. 3 is an enlarged schematic view of a structure at a in fig. 2.
FIG. 4 is a schematic view showing the position structure of the water collecting chamber, the heat conducting pipes and the finned pipes.
Fig. 5 is an enlarged schematic view of B in fig. 4.
Fig. 6 is a schematic structural view of the water retaining ring.
In the figure, 1, an upper support; 1a, a gas collection cavity; 1b, a water outlet; 2. a lower support; 2a, a water collecting cavity; 3. a heat conducting pipe; 4. a finned tube; 4a, a water inlet; 5. a water retaining ring; 5a, a rubber ring; 5b, an upper ring body; 5c, a lower ring body; 6. a water pump; 7. an exhaust pipe; 8. a water inlet pipe; 9. an annular gap; 10. a pipeline.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 5, the main furnace of the biomass evaporator comprises an upper support 1, a lower support 2, a heat conduction pipe 3, a finned pipe 4, a water retaining ring 5, a water pump 6 and the like. Wherein, heat pipe 3 is made by the heat conduction material, and the heat conduction material can be brass, stainless steel etc..
Particularly, gas collecting cavity 1a is arranged in upper support 1, and the side wall of upper support 1 is provided with an exhaust port for communicating gas collecting cavity 1a with the outside. The lower support 2 is internally provided with a water collecting cavity 2a, and one side of the lower support 2 is provided with a water inlet which enables the water collecting cavity 2a to be communicated with the outside. In the present embodiment, an exhaust pipe 7 communicating with the exhaust port is installed at the exhaust port; the water inlet is provided with a water inlet pipe 8 communicated with the water inlet.
The heat conduction pipe 3 is straight pipe-shaped and is vertically arranged between the upper support 1 and the lower support 2. The upper end of the heat conduction pipe 3 passes through the gas collection cavity 1a, the lower end of the heat conduction pipe 3 passes through the water collection cavity 2a, and at the moment, the two ends of the heat conduction pipe 3 are communicated with the outside. The upper end and the lower end of the heat conduction pipe 3 are fixedly connected with the upper support 1 and the lower support 2 in a sealing mode respectively.
The heat conductive pipes 3 have a plurality of heat conductive pipes, as shown in fig. 1 and 4, wherein a part of the heat conductive pipes 3 are distributed in the circumferential direction and the part of the heat conductive pipes 3 constitutes a first heat conductive unit, and another part of the heat conductive pipes 3 are also distributed in the circumferential direction and the part of the heat conductive pipes 3 constitutes a second heat conductive unit. The first heat conduction unit and the second heat conduction unit are coaxially arranged; the water collecting cavity 2a is annular and is positioned between the first heat conducting unit and the second heat conducting unit. The positions of the heat conduction pipes 3 in the first heat conduction unit and the second heat conduction unit are staggered.
As shown in fig. 4 and 5, a finned tube 4 is sleeved outside each heat conducting tube 3, the upper end and the lower end of the finned tube 4 are respectively inserted into the gas collecting cavity 1a and the water collecting cavity 2a, and the upper end and the lower end of the finned tube 4 are respectively and fixedly connected with the upper support 1 and the lower support 2 in a sealing manner. An annular gap 9 is formed between the finned tube 4 and the heat conducting tube 3, and two ends of the annular gap 9 are respectively communicated with the gas collecting cavity 1a and the water collecting cavity 2 a. In this embodiment, the lower end of the annular gap 9 is closed, each fin tube 4 is provided with a water inlet 4a for communicating the annular gap 9 with the water collecting chamber 2a, and all the water inlets 4a are opposite to the water collecting chamber 2 a.
As shown in fig. 2 and fig. 3, each heat pipe 3 is externally sleeved with a water retaining ring 5, the water retaining ring 5 is located above the annular gap 9 and in the gas collecting chamber 1a, and at this time, the water retaining ring 5 is opposite to the annular gap 9. Further, the outer diameter of the water retaining ring 5 is larger than the inner diameter of the finned tube 4, so that the water retaining effect of the water retaining ring 5 is improved.
In the present embodiment, as shown in fig. 6, the water retainer ring 5 is composed of a rubber ring 5a, an upper ring 5b, and a lower ring 5 c. The upper ring body 5b, the rubber ring 5a and the lower ring body 5c are all sleeved outside the heat conduction pipe 3 and are sequentially distributed from top to bottom. The upper ring body 5b is fixedly connected with the heat conduction pipe 3; two ends of the rubber ring 5a are fixedly connected with the upper ring body 5b and the lower ring body 5c respectively, the inner side wall of the rubber ring 5a is matched with the outer side wall of the heat conduction pipe 3, and the inner side wall of the rubber ring 5a is attached to the outer side wall of the heat conduction pipe 3 to form sealing; the lower ring 5c can slide in the axial direction of the heat conductive pipe 3.
Wherein, the connection mode of rubber ring 5a, upper ring body 5b and lower ring body 5c is specifically as follows: the two end faces of the rubber ring 5a are respectively provided with a positioning groove, the upper ring body 5b and the lower ring body 5c are respectively clamped in the two positioning grooves, and the upper ring body 5b and the lower ring body 5c are fixedly connected with the rubber ring 5a in a bonding mode.
As shown in fig. 2, the upper support 1 is further provided with a water outlet 1b for communicating the gas collecting chamber 1a with the outside, the water retaining ring 5 is higher than the water outlet 1b, and the water retaining ring 5 is lower than the air outlet. The water pump 6 is located on the side of the lower support 2, and an inlet of the water pump 6 communicates with the drain port 1b through a pipe 10.
When the biomass gasification furnace is used, high-temperature flue gas generated by biomass combustion enters through the lower port of the heat conduction pipe 3 and is finally discharged through the upper port of the heat conduction pipe 3; water enters the water collecting cavity 2a through the water inlet pipe 8 and then enters the annular gap 9; in the process that water flows in the annular gap 9, the water is contacted with the pipe wall of the heat conduction pipe 3 and is converted into water vapor when being heated, and the water vapor rises to enter the gas collection cavity 1a and then is discharged through the exhaust pipe 7.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (5)
1. A main furnace of a biomass evaporator comprises an upper support with a gas collecting cavity and a lower support with a water collecting cavity, wherein one side of the upper support is provided with an exhaust port which enables the gas collecting cavity to be communicated with the outside, one side of the lower support is provided with a water inlet which enables the water collecting cavity to be communicated with the outside, a plurality of heat conducting pipes are vertically fixed between the upper support and the lower support, two ends of each heat conducting pipe respectively penetrate through the gas collecting cavity and the water collecting cavity and are communicated with the outside, each heat conducting pipe is externally sleeved with and fixed with a finned pipe, an annular gap is formed between each finned pipe and the heat conducting pipe, two ends of the annular gap are respectively communicated with the gas collecting cavity and the water collecting cavity, the main furnace is characterized in that each heat conducting pipe is externally sleeved with a water retaining ring which is positioned above the annular gap and is positioned in the gas collecting cavity, the water retaining ring is opposite to the annular gap, and the upper, the position of the water retaining ring is higher than that of the water outlet, and the position of the water retaining ring is lower than that of the air outlet; the water retaining ring consists of a rubber ring, an upper ring body and a lower ring body, wherein the upper ring body, the rubber ring and the lower ring body are all sleeved outside the heat conducting pipe and are sequentially distributed from top to bottom; the two end surfaces of the rubber ring are respectively provided with a positioning groove, the upper ring body and the lower ring body are respectively clamped in the two positioning grooves, and the upper ring body and the lower ring body are fixedly connected with the rubber ring in a bonding mode; the inside wall of rubber ring and the lateral wall phase-match of heat pipe, and the inside wall of rubber ring and the lateral wall of heat pipe paste and form sealedly.
2. The biomass evaporator main furnace according to claim 1, wherein the outer diameter of the water retaining ring is larger than the inner diameter of the finned tube.
3. The main furnace of the biomass evaporator according to claim 1, further comprising a water pump, wherein an inlet of the water pump is communicated with the water outlet through a pipeline.
4. The primary furnace of the biomass evaporator according to claim 1, wherein a part of the heat conduction pipes are distributed in the circumferential direction and constitute a first heat conduction unit, another part of the heat conduction pipes are also distributed in the circumferential direction and constitute a second heat conduction unit, and the first heat conduction unit and the second heat conduction unit are coaxially arranged; the water collecting cavity is annular and is positioned between the first heat conducting unit and the second heat conducting unit, the lower end of the annular gap is closed, water inlets which enable the annular gap to be communicated with the water collecting cavity are formed in each finned tube, and all the water inlets are opposite to the water collecting cavity.
5. The primary furnace of the biomass evaporator according to claim 4, wherein the positions of the heat conduction pipes in the first heat conduction unit and the second heat conduction unit are staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661055.5A CN108800090B (en) | 2018-06-25 | 2018-06-25 | Main furnace of biomass evaporator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661055.5A CN108800090B (en) | 2018-06-25 | 2018-06-25 | Main furnace of biomass evaporator |
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| Publication Number | Publication Date |
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| CN108800090A CN108800090A (en) | 2018-11-13 |
| CN108800090B true CN108800090B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810661055.5A Active CN108800090B (en) | 2018-06-25 | 2018-06-25 | Main furnace of biomass evaporator |
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| CN116447576B (en) * | 2023-06-14 | 2023-08-18 | 兴隆县鹏生热力有限公司 | Steam boiler |
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| JPH09257208A (en) * | 1996-03-25 | 1997-09-30 | Ebara Res Co Ltd | Cylindrical once-through boiler |
| JPH11132404A (en) * | 1997-10-31 | 1999-05-21 | Miura Co Ltd | Water-tube boiler |
| CN2874140Y (en) * | 2006-02-15 | 2007-02-28 | 宝山钢铁股份有限公司 | Main shaft lubricating water blocking ring device |
| CN100547313C (en) * | 2006-05-31 | 2009-10-07 | 朴显泽 | A kind of thimble-tube boiler |
| CN205261505U (en) * | 2015-12-22 | 2016-05-25 | 潘爱文 | High frequency hot water, dual -purpose generator of vapour |
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Effective date of registration: 20200310 Address after: 325002 Room 802, 8 / F, Zhejiang South agricultural and sideline products center market (zone 4), Jinxiu Road, Lucheng District, Wenzhou City, Zhejiang Province Applicant after: Wenzhou Shengzhao Industrial Design Co., Ltd. Address before: 311400 Jinqiao North Road, Fuchun street, Fuyang District, Hangzhou, Zhejiang, China (Feilong Technology Co., Ltd.), 364 Applicant before: Yu Yanjun |
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