CN113803704A - Low-pressure superheated steam generating device with waste heat collecting function - Google Patents
Low-pressure superheated steam generating device with waste heat collecting function Download PDFInfo
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- CN113803704A CN113803704A CN202111107609.5A CN202111107609A CN113803704A CN 113803704 A CN113803704 A CN 113803704A CN 202111107609 A CN202111107609 A CN 202111107609A CN 113803704 A CN113803704 A CN 113803704A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 238000011084 recovery Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 140
- 238000004804 winding Methods 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 32
- 239000000779 smoke Substances 0.000 claims description 20
- 230000001502 supplementing effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 45
- 239000003546 flue gas Substances 0.000 description 43
- 239000003034 coal gas Substances 0.000 description 23
- 239000011120 plywood Substances 0.000 description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003779 heat-resistant material Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/006—Steam superheaters with heating tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a low-pressure superheated steam generating device with a waste heat collecting function, which comprises a combustion assembly, a steam generating assembly, a waste heat recovery assembly and an outer frame, wherein the outer frame comprises a first layer plate, a second layer plate, a third layer plate and a bottom plate, the lower end of the steam generating assembly is arranged between the second layer plate and the third layer plate, the upper end of the steam generating assembly is arranged on the upper surface of the third layer plate, the lower end of the combustion assembly is arranged on the upper surface of the bottom plate, the upper end of the combustion assembly penetrates through the position, close to the second layer plate, of the side wall of an annular cylinder wall, the waste heat recovery assembly is arranged on the upper surface of the bottom plate, one end of the waste heat recovery assembly is connected with the combustion assembly, and the other end of the waste heat recovery assembly is connected with the second layer plate. The invention generates superheated steam by a secondary heating mode of the coil pipe, thereby greatly improving the overall thermal conversion efficiency of the device.
Description
Technical Field
The invention relates to the technical field of superheated steam preparation, in particular to a low-pressure superheated steam generating device with a waste heat collecting function.
Background
In industrial production, superheated steam is often used, which is used at a temperature exceeding the atmospheric saturated steam temperature. The traditional superheated steam generating device often has the condition that the steam temperature cannot reach the standard due to the fact that the heat productivity transfer rate is low. Part of equipment solves the problem by optimizing a heat transfer structure, but the overall heat conversion rate of the device is still low, and a more serious energy waste condition exists. On the other hand, most superheated steam generating devices can obtain heat by adopting a gas combustion mode, but the gas cannot be fully mixed with air in advance when the gas is fed into the traditional equipment, so that local oxygen supply deficiency can occur when the gas is combusted, and incomplete combustion is caused. The incomplete combustion of the coal gas can not only cause the waste of resources, but also cause the generation of more carbon monoxide, and the subsequent treatment of the carbon monoxide also needs the waste of manpower and material resources. The flue gas after the coal gas burning still has higher heat, and this strand of high temperature flue gas need the cooling to discharge, and traditional equipment can not carry out effectual utilization to the flue gas waste heat, now that has reduced energy utilization and has rateed also to improve treatment cost.
Disclosure of Invention
The present invention is directed to a low-pressure superheated steam generator with a waste heat collecting function to solve the problems of the related art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a low pressure superheated steam generating device of subsidiary waste heat collection function, including combustion assembly, the steam generation subassembly, the waste heat recovery subassembly, outer frame includes a plywood, two plywoods, the three-layer board, the bottom plate, connect through the support column between a plywood and the two plywoods, be provided with annular cylinder wall between two plywoods and the three-layer board, the inside packing of annular cylinder wall has thermal insulation material, a plywood bottom and bottom plate top fastening connection, the steam generation subassembly lower extreme is installed at two plywoods, between the three-layer board, the steam generation subassembly upper end is installed at three-layer board upper surface, the combustion assembly lower extreme is installed at the bottom plate upper surface, the combustion assembly upper end penetrates near two plywoods position department from annular cylinder wall lateral wall, waste heat recovery subassembly upside and annular cylinder lateral wall link to each other, waste heat recovery subassembly downside and bottom plate upper surface fastening connection. According to the invention, the combustion assembly fully mixes the coal gas and the air through the mixing block and then quickly sprays the mixture into the heating pipe, the coal gas is combusted in the heating pipe, the flame is in a spraying shape, the heat generated by combustion is transferred to the steam generation assembly to heat water to generate primary heating steam, the primary heating steam exchanges heat through the coil pipe and the heating pipe to generate low-pressure superheated steam, and the overall heat conversion efficiency of the device is greatly improved. The high-temperature flue gas that the burning subassembly produced carries out heat through waste heat recovery subassembly and recycles, and the heat of high-temperature flue gas preheats the water of treating the evaporation, has both reduced the heat that the evaporation needs to consume, has also reduced the temperature of high-temperature flue gas, has reduced the flue gas treatment cost.
Furthermore, the combustion assembly comprises a heating pipe, an air inlet component and an air passing bent pipe, the heating pipe penetrates through a through hole in the center of the two-layer plate, the heating pipe is fixedly connected with the side wall of the through hole of the two-layer plate, the bottom of the heating pipe is fixedly connected with the air passing bent pipe, one end, far away from the heating pipe, of the air passing bent pipe penetrates through the side wall of the annular cylinder wall, one end, far away from the heating pipe, of the air passing bent pipe is fixedly connected with the air inlet component, and the air inlet component is installed on the upper surface of the bottom plate. The gas inlet component inputs the uniformly mixed gas and air into the gas passing elbow, and the gas passing elbow conveys the mixed gas into the heating pipe for combustion. The invention is provided with the ignition mechanism and the flame sensor at the joint of the air passing bent pipe and the heating pipe, thereby realizing the automatic control of the ignition work. The heating pipe is made of heat-resistant materials, the surface of the pipeline is densely provided with meshes, flame can be combusted on the surface of the heating pipe, and combusted smoke is conveyed to the interior of the annular cylinder wall through the heating pipe.
Further, the part of admitting air includes the pump of admitting air, the return bend of giving vent to anger, mixes the piece, the dish of admitting air, dish one end of admitting air and the return bend fastening connection of passing the gas, the dish other end of admitting air and the return bend fastening connection of giving vent to anger, the pump of admitting air and bottom plate upper surface fastening connection, the air inlet of the pump of admitting air and the return bend fastening connection of admitting air, the one end fastening connection of the dish of admitting air is kept away from with the return bend of giving vent to anger in the gas outlet of the pump of admitting air, the one end and the mixed piece fastening connection of the pump of admitting air are kept away from to the return bend of admitting air. Air and coal gas enter the air inlet bent pipe after being uniformly mixed at the mixing block, and then are conveyed into the air outlet bent pipe at a very high speed by the air inlet pump, the air outlet bent pipe with different calibers is connected with the heating pipe by the air inlet disc, the calibers of the heating pipe are larger than those of the air outlet bent pipe, an automatic ignition device is arranged in the heating pipe, and the coal gas mixed air is fully combusted in the heating pipe.
Further, mix the piece and include the inlayer sleeve, outer sleeve, inlayer sleeve, outer sleeve one side is provided with the terminal surface, the inlayer sleeve, outer sleeve opposite side sets up to uncovered, the inlayer sleeve is located inside outer sleeve, be provided with the annular mounting hole on the outer sleeve terminal surface, the uncovered one end lateral wall of inlayer sleeve is installed in the annular mounting hole, the uncovered one end of inlayer sleeve is connected through pipeline and gas conveying pipeline, the one end fastening connection of admitting air pump is kept away from to the uncovered one end of outer sleeve and the return bend that admits air, the inlayer sleeve, be provided with a plurality of mixing hole in the outer sleeve inner wall, the inlayer sleeve, mixing hole in the outer sleeve all inclines with same deflection angle. Coal gas is input from an opening of the inner sleeve and then discharged from a mixing hole in the inner sleeve, air is input from the mixing hole in the outer sleeve, the air and the coal gas are dispersed into a plurality of strands of fine air columns, the coal gas is conveyed from the inner layer to the outer layer of the inner sleeve, the air is conveyed from the outer layer to the inner layer of the outer sleeve, and the fine coal gas flow and the air flow can generate opposite air flow impact under the condition that the mixing hole is positioned at the same deflection angle.
Further, the steam generating component comprises a plurality of water containing barrels, a first jacket, a coil pipe, steam holes, water supplementing holes, heat conducting fins and a second jacket, wherein the plurality of water containing barrels are uniformly provided with the plurality of heat conducting fins on the outer wall of the water containing barrels, the upper end of each water containing barrel is fixedly connected with the bottom of a three-layer plate, the plurality of steam holes are arranged inside the connecting position of the three-layer plates and the water containing barrels, the steam holes are communicated with the upper surface and the lower surface of the three-layer plates, the lower end of each water containing barrel is fixedly connected with the top of the second jacket, the second jacket is fixedly connected with the inner wall of the annular barrel wall, the water supplementing holes are arranged inside the connecting position of the second jacket and the water containing barrels, the water supplementing holes are communicated with the inner cavity of the second jacket and the inner cavity of the water containing barrels, the side wall of the second jacket is provided with water supplementing holes, the water supplementing holes are connected with the waste heat recovery component through pipelines, the first jacket is arranged above the three-layer plates, the upper surfaces of the first jacket and the three-layer plates are fixedly connected, the three-layer plate is also provided with a steam outlet which is funnel-shaped, one end of the coil pipe is connected with the steam outlet, the coil pipe is spirally wound on the outer wall of the heating pipe, one end of the coil pipe, which is far away from the steam outlet, penetrates out of the annular cylinder wall, and one end of the coil pipe, which extends out of the annular cylinder wall, is connected with a pipeline for conveying superheated steam. The water in the flourishing water section of thick bamboo has steam to escape after being heated, steam enters into first clamp cover through the steam hole inside, along with the continuous entering of steam, steam can be extruded from the steam discharge port, steam enters into among the coil pipe through the steam discharge port, the coil pipe direct winding is at the heating pipe outer wall, steam can carry out the secondary heating when the coil pipe, can obtain superheated steam under the lower prerequisite of assurance steam pressure through this kind of mode, superheated steam has comparatively extensive application in the industry, and lower pressure also can guarantee transportation process's security. The invention produces low-pressure hot steam by the arrangement, thereby not only improving the thermal conversion efficiency, but also ensuring the safety of the product.
Furthermore, the heat conduction fin is circular, and the upper surface of the heat conduction fin is provided with a protruding radian. The heat-conducting fin is made of copper which has excellent heat conductivity and ductility, and the laminated densely-distributed annular copper sheets can enlarge the contact area between the water containing barrel and the flue gas, so that the water containing barrel can absorb more heat.
Further, the waste heat recovery subassembly is including the connecting bend, the inlet winding pipe, water supply parts, the flue gas case, connecting bend one end and the inside looks UNICOM of annular section of thick bamboo wall, the connecting bend other end and the inside looks UNICOM of flue gas incasement, flue gas case and the outside wall fastening connection of annular section of thick bamboo, flue gas case lateral wall bottom is provided with the exhanst gas outlet, exhanst gas outlet and outside flue gas recovery pipeline looks UNICOM, the inlet winding pipe is the heliciform, the inlet winding pipe is installed inside the flue gas incasement, inlet winding pipe bottom and water supply parts link to each other, water supply parts and bottom plate upper surface fastening connection, the inlet winding pipe upper end stretches out from flue gas case top, the inlet winding pipe upper end is through pipeline and moisturizing mouth looks UNICOM, the inlet winding pipe outside is provided with a plurality of heat absorption fin, a plurality of heat absorption fin is around the inlet winding pipe evenly distributed. Inside the inside high temperature flue gas of annular section of thick bamboo wall carried the flue gas case through connecting the return bend, the heat in the flue gas heats the moisture of intaking in the pipe, and the water supply direction and the flue gas discharge direction of water supply unit are relative, and flue gas and rivers produce the convection current, the promotion of very big degree heat conversion rate. The invention improves the water supply temperature and reduces the flue gas treatment cost through the arrangement.
Further, the water supply part comprises a water supply pump and a transmission pipe, one end of the water supply pump is connected with the water supply pipeline, the other end of the water supply pump is connected with the transmission pipe, and one end, far away from the water supply pump, of the transmission pipe is connected with the bottom of the water inlet winding pipe. Install check valve and pressure sensors in the moisturizing hole, when pressure sensors sense the flourishing water drum in the water yield not enough, can control the working shaft to supply water to the transmission pipe in, the working shaft can fill up the water yield in the flourishing water drum, and pressure sensors signals once more after filling up, and the working shaft stop work. The water passing through the water inlet winding pipe is preheated by the flue gas, so that the utilization rate of heat is improved, and the cost of cooling the flue gas is saved.
Compared with the prior art, the invention has the following beneficial effects: according to the combustion assembly, the coal gas and the air are fully mixed through the mixing block and then are rapidly injected into the heating pipe, so that the coal gas can be fully combusted. The heat generated by combustion is transferred to the inside of the water containing barrel through the heat conducting fins to heat water and generate primary heating steam. The primary heating steam exchanges heat through the coil pipe and the heating pipe to generate low-pressure superheated steam, and the overall thermal conversion efficiency of the device is greatly improved by the arrangement. The high-temperature flue gas that the burning subassembly produced carries out heat through waste heat recovery subassembly and recycles, and the heat of high-temperature flue gas preheats the water of treating the evaporation, has both reduced the heat that the evaporation needs to consume, has also reduced the temperature of high-temperature flue gas, has reduced the flue gas treatment cost.
Drawings
The accompanying drawings, which 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 principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a right side view of the overall structure of the present invention;
FIG. 3 is a side sectional view A-A of the present invention;
FIG. 4 is a perspective view showing the internal structure of the outer frame of the present invention;
FIG. 5 is a view of the coil and tube installation of the present invention;
FIG. 6 is a schematic diagram of the overall structure of the mixing block of the present invention;
FIG. 7 is a mixing hole distribution and airflow walk diagram of the present invention;
FIG. 8 is a schematic view of the overall structure of the heat-conducting fin of the present invention;
in the figure: 1-combustion component, 11-heating pipe, 12-air inlet component, 121-air inlet pump, 122-air inlet bent pipe, 123-air outlet bent pipe, 124-mixing block, 1241-inner layer sleeve, 1242-outer layer sleeve, 1243-mixing hole, 125-air inlet disc, 13-air passing bent pipe, 2-steam generating component, 21-water containing cylinder, 22-first jacket, 23-coil pipe, 24-steam hole, 25-water supplementing hole, 26-heat conducting fin, 27-second jacket, 3-waste heat recovering component, 31-connecting bent pipe, 32-water inlet winding pipe, 33-water supply component, 331-water supply pump, 332-transmission pipe, 34-smoke box, 4-outer frame, 41-first laminate, 42-second laminate, 43-three-layer plate, 44-bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions:
as shown in figures 1 and 2, the low-pressure superheated steam generator with the function of waste heat collection comprises a combustion assembly 1, a steam generation assembly 2, a waste heat recovery assembly 3 and an outer frame 4, wherein the outer frame 4 comprises a first layer plate 41, a second layer plate 42, a third layer plate 43 and a bottom plate 44, the first layer plate 41 is connected with the second layer plate 42 through a support column, an annular cylinder wall is arranged between the second layer plate 42 and the third layer plate 43, a heat insulation material is filled in the annular cylinder wall, the bottom of the first layer plate 41 is fixedly connected with the top of the bottom plate 44, the lower end of the steam generation assembly 2 is arranged between the second layer plate 42 and the third layer plate 43, the upper end of the steam generation assembly 2 is arranged on the upper surface of the third layer plate 43, the lower end of the combustion assembly 1 is arranged on the upper surface of the bottom plate 44, the upper end of the combustion assembly 1 penetrates through the position, close to the second layer plate 42, of the side wall of the waste heat recovery assembly 3 is connected with the side wall of the annular cylinder, the lower side of the waste heat recovery component 3 is fixedly connected with the upper surface of the bottom plate 44. According to the invention, the combustion assembly 1 fully mixes the coal gas and the air through the mixing block 124 and then rapidly sprays the mixture into the heating pipe 11, the coal gas is combusted in the heating pipe 11, the flame is in a spraying shape, the heat generated by combustion is transferred to the steam generation assembly 2 to heat water to generate primary heating steam, the primary heating steam exchanges heat with the heating pipe 11 through the coil pipe 23 to generate low-pressure superheated steam, and the arrangement greatly improves the overall heat conversion efficiency of the device. The high-temperature flue gas that combustion assembly 1 produced carries out heat through waste heat recovery subassembly 3 and recycles, and the heat of high-temperature flue gas preheats the water of treating the evaporation, has both reduced the heat that the evaporation needs to consume, has also reduced the temperature of high-temperature flue gas, has reduced flue gas treatment cost.
As shown in fig. 3 and 5, the combustion assembly 1 includes a heating pipe 11, an air inlet component 12, and a gas passing elbow 13, the heating pipe passes through a through hole at the center of the two-layer plate 42, the heating pipe 11 is fastened to the side wall of the through hole of the two-layer plate 42, the bottom of the heating pipe 11 is fastened to the gas passing elbow 13, one end of the gas passing elbow 13 far away from the heating pipe 11 passes through the side wall of the annular cylinder wall, one end of the gas passing elbow 13 far away from the heating pipe 11 is fastened to the air inlet component 12, and the air inlet component 12 is mounted on the upper surface of the bottom plate 44. The gas inlet component 12 inputs the uniformly mixed gas and air into the gas passing elbow 13, and the gas passing elbow 13 conveys the mixed gas into the heating pipe 11 for combustion. The invention is provided with an ignition mechanism and a flame sensor at the joint of the air passing bent pipe 13 and the heating pipe 11, thereby realizing the automatic control of the ignition work. The heating pipe 11 is made of heat-resistant materials, the surface of the pipeline is densely provided with meshes, flame can be combusted on the surface of the heating pipe, and combusted smoke is conveyed to the inner part of the annular cylinder wall through the heating pipe 11.
As shown in fig. 4, the air inlet component 12 includes an air inlet pump 121, an air inlet elbow 122, an air outlet elbow 123, a mixing block 124, an air inlet disc 125, one end of the air inlet disc 125 is fastened to the air passing elbow 13, the other end of the air inlet disc 125 is fastened to the air outlet elbow 123, the air inlet pump 121 is fastened to the upper surface of the base plate 44, an air inlet of the air inlet pump 121 is fastened to the air inlet elbow 122, an air outlet of the air inlet pump 121 is fastened to one end of the air outlet elbow 123 far away from the air inlet disc 125, and one end of the air inlet elbow 122 far away from the air inlet pump 121 is fastened to the mixing block 124. Air and coal gas are uniformly mixed at the mixing block 124 and then enter the air inlet elbow 122, and then are conveyed into the air outlet elbow 123 at a very fast speed by the air inlet pump 121, the air outlet elbow 123 with different calibers is connected with the heating pipe 11 by the air inlet disc 125, the calibers of the heating pipe 11 are larger than that of the air outlet elbow 123, an automatic ignition device is arranged in the heating pipe 11, and the coal gas mixed air is fully combusted in the heating pipe 11.
As shown in fig. 6 and 7, the mixing block 124 includes an inner sleeve 1241, an outer sleeve 1242, the inner sleeve 1241, an end face is provided on one side of the outer sleeve 1242, the inner sleeve 1241, the other side of the outer sleeve 1242 is provided with an opening, the inner sleeve 1241 is located inside the outer sleeve 1242, an annular mounting hole is provided on the end face of the outer sleeve 1242, an outer side wall of an open end of the inner sleeve 1241 is installed in the annular mounting hole, an open end of the inner sleeve 1241 is connected with a gas conveying pipeline through a pipeline, an open end of the outer sleeve 1242 and an end of the intake elbow 122 far away from the intake pump 121 are fastened and connected, the inner sleeve 1241, a plurality of mixing holes 1243 are provided in an inner wall of the outer sleeve 1242, the mixing holes 1243 in the inner sleeve 1241 and the outer sleeve 1242 are all inclined at the same deflection angle. Coal gas is input from an opening of the inner sleeve 1241 and then is discharged from a mixing hole 1243 on the inner sleeve 1241, air is input from the mixing hole 1243 of the outer sleeve 1242, the air and the coal gas are dispersed into a plurality of strands of fine air columns, the coal gas is conveyed from the inner layer of the inner sleeve 1241 to the outer layer, the air is conveyed from the outer layer of the outer sleeve 1242 to the inner layer, and under the condition that the mixing holes are positioned at the same deflection angle, fine coal gas airflow and air airflow can generate airflow hedging, through the hedging, the coal gas and the air can be fully mixed, and the uniform mixing is favorable for better combustion of the coal gas.
As shown in fig. 3 and 4, the steam generating component 2 includes a water containing barrel 21, a first jacket 22, a coil 23, steam holes 24, water replenishing holes 25, heat conducting fins 26 and a second jacket 27, the water containing barrel 21 has a plurality of heat conducting fins 26, the outer wall of the water containing barrel 21 is uniformly provided with a plurality of heat conducting fins 26, the upper end of the water containing barrel 21 is tightly connected with the bottom of a three-layer plate 43, the inside of the connecting position of the three-layer plate 43 and the water containing barrel 21 is provided with a plurality of steam holes 24, the steam holes 24 are communicated with the upper and lower surfaces of the three-layer plate 43, the lower end of the water containing barrel 21 is tightly connected with the top of the second jacket 27, the second jacket 27 is tightly connected with the inner wall of the annular barrel wall, the inside of the connecting position of the second jacket 27 and the water containing barrel 21 is provided with the water replenishing holes 25, the water replenishing holes 25 are communicated with the inner cavity of the second jacket 27 and the inner cavity of the water containing barrel 21, the side wall of the second jacket 27 is provided with a water replenishing port, the water replenishing port is connected with the waste heat recovering component 3 through a pipeline, first cover 22 is installed in three-layer board 43 top, and first cover 22 and three-layer board 43 upper surface fastening connect, still is provided with the steam outlet on the three-layer board 43, and the steam outlet is the infundibulate, and 23 one end of coil pipe are connected with the steam outlet, and the coil pipe 23 is the heliciform winding on 11 outer walls of heating pipe, and the one end that the steam outlet was kept away from to coil pipe 23 is worn out from the annular section of thick bamboo wall, and the one end that the coil pipe 23 stretches out the annular section of thick bamboo wall links to each other with the pipeline of carrying superheated steam. The water in the flourishing water drum 21 has steam to escape after being heated, steam enters into inside first jacket 22 through steam hole 24, along with the continuous entering of steam, steam can be extruded from the steam discharge port, steam enters into among coil pipe 23 through the steam discharge port, coil pipe 23 direct winding is at 11 outer walls of heating pipe, steam can carry out the secondary heating when passing through coil pipe 23, can obtain superheated steam under the lower prerequisite of assurance steam pressure through this kind of mode, superheated steam has comparatively extensive application in the industry, and lower pressure also can guarantee transportation process's security. The invention produces low-pressure hot steam by the arrangement, thereby not only improving the thermal conversion efficiency, but also ensuring the safety of the product.
As shown in fig. 8, the heat transfer fins 26 are annular, and the upper surfaces of the heat transfer fins 26 are provided with a convex curvature. The heat-conducting fin is made of copper which has excellent heat conductivity and ductility, and the laminated densely-distributed annular copper sheets can enlarge the contact area between the water containing cylinder 21 and the flue gas, so that the water containing cylinder 21 can absorb more heat.
As shown in fig. 3, the waste heat recovery assembly 3 includes a connection elbow 31, a water inlet winding pipe 32, a water supply component 33, a smoke box 34, one end of the connection elbow 31 is communicated with the inside of the annular cylinder wall, the other end of the connection elbow 31 is communicated with the inside of the smoke box 34, the smoke box 34 is fixedly connected with the outer side wall of the annular cylinder wall, a smoke outlet is arranged at the bottom of the side wall of the smoke box, the smoke outlet is communicated with an external smoke recovery pipeline, the water inlet winding pipe 32 is in a spiral shape, the water inlet winding pipe 32 is arranged inside the smoke box 34, the bottom end of the water inlet winding pipe 32 is connected with the water supply component 33, the upper surface of the water supply component is fixedly connected with the upper surface of the bottom plate 44, the upper end of the water inlet winding pipe 32 extends out of the smoke box 34, the upper end of the water inlet winding pipe 32 is communicated with a water replenishing port through a pipeline, a plurality of heat absorption fins are arranged outside the water inlet winding pipe, and the plurality of heat absorption fins are uniformly distributed around the water inlet winding pipe 32. Inside the inside high temperature flue gas of annular section of thick bamboo wall carried flue gas case 34 through connecting the return bend, the heat in the flue gas heats the moisture of intaking in the pipe 32, and water supply part 33's water supply direction and flue gas discharge direction are relative, and flue gas and rivers produce the convection current, the promotion of very big degree heat conversion. The invention improves the water supply temperature and reduces the flue gas treatment cost through the arrangement.
As shown in fig. 3, the water supply unit 33 includes a water supply pump 331, a transfer pipe 332, one end of the water supply pump 331 is connected to the water supply line, the other end of the water supply pump 331 is connected to the transfer pipe 332, and one end of the transfer pipe 332, which is far from the water supply pump 331, is connected to the bottom of the water inlet winding pipe 32. The water replenishing hole 25 is internally provided with a check valve and a pressure sensor, when the pressure sensor senses that the water amount in the water containing barrel 21 is insufficient, the water supply pump is controlled to supply water into the transmission pipe, the water supply pump replenishes the water amount in the water containing barrel 21, the pressure sensor sends out a signal again after the water supply pump is replenished, and the water supply pump 331 stops working. The water passing through the water inlet winding pipe 32 is preheated by the flue gas, so that the utilization rate of heat is improved, and the cost of cooling the flue gas is saved.
The working principle of the invention is as follows: the water supply pump 331 supplies water to the second jacket 27, and the second jacket 27 supplies water to the respective water holding cylinders 21. The air inlet pump 121 pumps air and gas into the heating pipe 11 through the mixing block 124, the gas is input from an opening of the inner sleeve 1241 and then discharged from a mixing hole 1243 on the inner sleeve 1241, the air is input from the mixing hole 1243 of the outer sleeve 1242, the air and the gas are dispersed into a plurality of strands of fine gas columns, the gas is conveyed from the inner layer to the outer layer of the inner sleeve 1241, the air is conveyed from the outer layer to the inner layer of the outer sleeve 1242, and under the condition that the mixing holes are at the same deflection angle, the fine gas flow and the air flow can generate air flow opposite impact, and the gas and the air are fully mixed through the opposite impact. Coal gas is combusted in the heating pipe 11, heat generated by combustion is transferred to a sealed space inside the annular cylinder wall, the water containing cylinder 21 is heated inside the annular cylinder wall, the heat is transferred to a water body in the water containing cylinder 21, the water body is heated to generate steam, the steam enters the first jacket 22 through the steam hole 24, enters the coil pipe 23 through the steam outlet to be secondarily heated, and superheated steam after secondary heating is conveyed to the steam pipeline to be used for industrial production. High-temperature flue gas generated by combustion in the heating pipe is conveyed into the flue gas tank 34 through the connecting bent pipe 31, and heat in the flue gas preheats the water body in the water inlet winding pipe 32.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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 (8)
1. The utility model provides a low pressure superheated steam generating device of function is collected to subsidiary waste heat which characterized in that: the device comprises a combustion assembly (1), a steam generation assembly (2), a waste heat recovery assembly (3) and an outer frame (4), wherein the outer frame (4) comprises a first layer plate (41), a second layer plate (42), a third layer plate (43) and a bottom plate (44), the first layer plate (41) and the second layer plate (42) are connected through a support column, an annular cylinder wall is arranged between the second layer plate (42) and the third layer plate (43), heat insulation materials are filled in the annular cylinder wall, the bottom of the first layer plate (41) is fixedly connected with the top of the bottom plate (44), the lower end of the steam generation assembly (2) is arranged between the second layer plate (42) and the third layer plate (43), the upper end of the steam generation assembly (2) is arranged on the upper surface of the third layer plate (43), the lower end of the combustion assembly (1) is arranged on the upper surface of the bottom plate (44), and the upper end of the combustion assembly (1) penetrates through the position, close to the second layer plate (42), from the side wall of the annular cylinder wall, the upper side of the waste heat recovery component (3) is connected with the side wall of the annular cylinder, and the lower side of the waste heat recovery component (3) is fixedly connected with the upper surface of the bottom plate (44).
2. The low-pressure superheated steam generator with a residual heat collecting function according to claim 1, further comprising: the combustion assembly (1) comprises a heating pipe (11), an air inlet component (12) and an air passing bent pipe (13), the heating pipe penetrates through a through hole in the center of a two-layer plate (42), the heating pipe (11) is fixedly connected with the side wall of the through hole of the two-layer plate (42), the bottom of the heating pipe (11) is fixedly connected with the air passing bent pipe (13), one end, far away from the heating pipe (11), of the air passing bent pipe (13) penetrates through the side wall of the annular cylinder wall, one end, far away from the heating pipe (11), of the air passing bent pipe (13) is fixedly connected with the air inlet component (12), and the air inlet component (12) is installed on the upper surface of a bottom plate (44).
3. The low-pressure superheated steam generator with a residual heat collecting function according to claim 2, wherein: the air inlet component (12) comprises an air inlet pump (121), an air inlet bent pipe (122), an air outlet bent pipe (123), a mixing block (124) and an air inlet disc (125), one end of the air inlet disc (125) is fixedly connected with the air inlet bent pipe (13), the other end of the air inlet disc (125) is fixedly connected with the air outlet bent pipe (123), the upper surfaces of the air inlet pump (121) and the base plate (44) are fixedly connected, an air inlet of the air inlet pump (121) is fixedly connected with the air inlet bent pipe (122), an air outlet of the air inlet pump (121) is fixedly connected with one end of the air outlet bent pipe (123) far away from the air inlet disc (125), and one end of the air inlet bent pipe (122) far away from the air inlet pump (121) is fixedly connected with the mixing block (124).
4. The low-pressure superheated steam generator with a residual heat collecting function according to claim 3, wherein: the mixing block (124) comprises an inner sleeve (1241) and an outer sleeve (1242), one side of the inner sleeve (1241) and the outer sleeve (1242) is provided with an end face, the other side of the inner sleeve (1241) and the outer sleeve (1242) is provided with an opening, the inner sleeve (1241) is positioned inside the outer sleeve (1242), an annular mounting hole is arranged on the end surface of the outer sleeve (1242), the outer side wall of the open end of the inner sleeve (1241) is arranged in the annular mounting hole, the open end of the inner sleeve (1241) is connected with a gas conveying pipeline through a pipeline, the open end of the outer sleeve (1242) is fixedly connected with one end of the air inlet bent pipe (122) far away from the air inlet pump (121), a plurality of mixing holes (1243) are arranged in the inner walls of the inner sleeve (1241) and the outer sleeve (1242), the mixing holes (1243) in the inner sleeve (1241) and the outer sleeve (1242) are all inclined at the same deflection angle.
5. The low-pressure superheated steam generator with a residual heat collecting function according to claim 4, wherein: the steam generation assembly (2) comprises a water containing barrel (21), a first jacket (22), a coil pipe (23), steam holes (24), water supplementing holes (25), heat conducting fins (26) and a second jacket (27), wherein the water containing barrel (21) is provided with a plurality of heat conducting fins (26), the outer wall of the water containing barrel (21) is uniformly provided with the plurality of heat conducting fins (26), the upper end of the water containing barrel (21) is fixedly connected with the bottom of a three-layer plate (43), the inside of the connecting position of the three-layer plate (43) and the water containing barrel (21) is provided with a plurality of steam holes (24), the steam holes (24) are communicated with the upper surface and the lower surface of the three-layer plate (43), the lower end of the water containing barrel (21) is fixedly connected with the top of the second jacket (27), the second jacket (27) is fixedly connected with the inner wall of the annular barrel wall, the water supplementing holes (25) are arranged inside the connecting position of the second jacket (27) and the water containing barrel (21), the water replenishing hole (25) is communicated with an inner cavity of a second jacket (27) and an inner cavity of a water containing barrel (21), a water replenishing hole is formed in the side wall of the second jacket (27), the water replenishing hole is connected with the waste heat recovery assembly (3) through a pipeline, the first jacket (22) is installed above a three-layer plate (43), the upper surfaces of the first jacket (22) and the three-layer plate (43) are fixedly connected, a steam outlet is further formed in the three-layer plate (43), the steam outlet is funnel-shaped, one end of the coil (23) is connected with the steam outlet, the coil (23) is spirally wound on the outer wall of the heating pipe (11), one end, far away from the steam outlet, of the coil (23) penetrates out of the annular barrel wall, and one end, extending out of the annular barrel wall, of the coil (23) is connected with a pipeline for conveying superheated steam.
6. The low-pressure superheated steam generator with a residual heat collecting function according to claim 5, wherein: the heat conduction fins (26) are annular, and the upper surfaces of the heat conduction fins (26) are provided with protruding radians.
7. The low-pressure superheated steam generator with a residual heat collecting function according to claim 6, wherein: the waste heat recovery assembly (3) comprises a connecting bent pipe (31), a water inlet winding pipe (32), a water supply part (33) and a smoke box (34), one end of the connecting bent pipe (31) is communicated with the inside of the annular cylinder wall, the other end of the connecting bent pipe (31) is communicated with the inside of the smoke box (34), the smoke box (34) is fixedly connected with the outer side wall of the annular cylinder wall, a smoke outlet is formed in the bottom of the side wall of the smoke box and is communicated with an external smoke recovery pipeline, the water inlet winding pipe (32) is spiral, the water inlet winding pipe (32) is installed inside the smoke box (34), the bottom end of the water inlet winding pipe (32) is connected with the water supply part (33), the water supply assembly is fixedly connected with the upper surface of the bottom plate (44), the upper end of the water inlet winding pipe (32) extends out of the upper side of the smoke box (34), and the upper end of the water inlet winding pipe (32) is communicated with a water supplementing port through a pipeline, the outside of the water inlet winding pipe (32) is provided with a plurality of heat absorption fins which are uniformly distributed around the water inlet winding pipe (32).
8. The low-pressure superheated steam generator with a residual heat collecting function according to claim 7, wherein: the water supply part (33) comprises a water supply pump (331) and a transmission pipe (332), one end of the water supply pump (331) is connected with a water supply pipeline, the other end of the water supply pump (331) is connected with the transmission pipe (332), and one end, far away from the water supply pump (331), of the transmission pipe (332) is connected with the bottom of the water inlet winding pipe (32).
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| CN202111107609.5A CN113803704A (en) | 2021-09-22 | 2021-09-22 | Low-pressure superheated steam generating device with waste heat collecting function |
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| CN202111107609.5A CN113803704A (en) | 2021-09-22 | 2021-09-22 | Low-pressure superheated steam generating device with waste heat collecting function |
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