CN102155732B - Double-pressure direct-combustion reheating-type heating power output device - Google Patents
Double-pressure direct-combustion reheating-type heating power output device Download PDFInfo
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The invention discloses a double-pressure direct-combustion reheating-type heating power output device which comprises a rapid energy-supplying linkage assembly, an anti-boiling steam-water separation assembly, a target overheating combined supply assembly, a waste heat exchange and recovery assembly, a central intelligent controller and accessories. Through the device, a heat section, an evaporation section, a reheating section and a waste heat recovery section are overlaid, optimized and combined into an integral effectively, and high evapration and reheating capability is revealed; simmultaneously the device has single-group heating and multi-group heating special structrual functions generally, and can be matched with a solar energy heat collecting system or a PV/T (photovoltaic/thermal) composite optimal system; and the configured central intelligent controller can be subjected to intelligent operation and humanization management, the whole process of the heating, evaporation, reheating and recovery of the device is organically integrated, thus people can operate the whole device easily by simply pressing the buttons.
Description
Technical Field
The invention relates to a thermal output device, in particular to an intelligent, array and multistage thermal preparation output efficient composite pressure direct-fired reheating thermal output device which can use various combustible gases or fuel oil as main heat sources and can be matched with a solar heat collector or a solar photovoltaic photo-thermal integrated device for use.
Background
With the enhancement of the environmental awareness of the whole mankind and the rapid development and improvement of national economy, in order to improve the increasingly serious problems of environmental pollution and air quality in large and medium-sized cities, the state adjusts the fuel policy, encourages the rapid updating and development of fuel oil and gas boiler technologies, and advocates the development of modern thermal output devices with high quality, low pollution, high efficiency and intellectualization, so as to meet the daily production and life needs of people. More importantly, the research, development, production and popularization of equipment matched with a solar heat collection system and a solar photovoltaic and photo-thermal integrated device (namely, a PV/T device) composite optimization system are already in daily agenda of governments and professional research institutions of various countries. Although some domestic professional research institutions have already studied and produced fuel gas boilers in the early stage, if a horizontal internal combustion mode is adopted, a boiler pipe adopts a threaded pipe with good heat absorption, and two, three or even four return strokes are adopted in the aspect of flue gas return stroke, the temperature of tail flue gas after the three return strokes is up to 230-260 ℃, and after the temperature is increased to four return strokes, although the exhaust temperature is reduced, along with the increase of resistance, the power of smoke exhaust equipment needs to be increased, and the power consumption is increased. Therefore, it is difficult to play the role of rapid and instant heat energy utilization in modern industry and people's daily production and life.
In order to meet the market needs at home and abroad, the need of accelerating the updating and upgrading of products is a necessary trend. Therefore, there is an urgent need to develop a new thermal output device that can use multiple kinds of gas, fuel oil and renewable energy simultaneously, and has the advantages of rapidness, high efficiency, environmental protection, and instant use.
Disclosure of Invention
The invention aims to provide a recompression direct-combustion reheating type thermal output device aiming at the defects and the needs of domestic and foreign markets, which has the biggest characteristic that a heating section, an evaporation section, a reheating section and an exhaust heat recovery section are reasonably and effectively combined into a whole in an optimized way, so that the strong evaporation reheating capacity is embodied; meanwhile, the solar energy heat collecting system has special structural functions of general single-group heating and combined heating, and can be matched with a solar energy heat collecting system or a PV/T composite optimizing system for use; and the central intelligent controller can be used for more intelligently operating and managing humanization, the whole processes of heating, evaporating, reheating and recycling of the device are organically integrated, and people can easily control the whole device in simple keys.
In order to achieve the aim of the invention, the double-pressure direct-combustion reheating type thermal output device comprises a quick-acting energy compensation linkage component, a boiling-resistant steam-water separation component, a target overheating combined supply component, a tail heat exchange recovery component, a central intelligent controller and accessories.
The quick-acting energy supplementing linkage assembly comprises a combustor A, a fuel main pipe inlet, a fuel distributor, fuel branch pipes, a waste heat recovery inlet, waste heat recovery branch pipes, a waste heat recovery main pipe, a high-temperature working fluid pipe, a working fluid, a heat exchange pipe A, a heat exchange pipe outer barrel A, a working fluid pump, a blow-down valve and a base. One end of the fuel main pipe is in sealed butt joint with the fuel distributor, the other end of the fuel main pipe is in butt joint with external fuel, the combustor A is in sealed fixed connection with the fuel distributor through a connecting pipe, and the fuel branch pipes are connected out of the fuel main pipe and extend upwards into the fuel distribution pipes in the boiling-resistant steam-water separation assembly. The heat exchange tube A is sleeved in the heat exchange tube outer cylinder A to form a cavity, one end of the heat exchange tube A is welded and sealed by the fixing seal head and is provided with a flue gas hole for upward exhaust, and the center of the other end of the heat exchange tube A is provided with a hole with the size equal to that of the burner, so that the burner A is convenient to arrange and is stably installed with the base. One end of the waste heat recovery main pipe is in butt joint with the working fluid pump, the other end of the waste heat recovery main pipe is provided with a four-way flange, and a single group of adjacent waste heat recovery branch pipes are in fixed butt joint with the four-way flange through screws and are connected to a waste heat recovery inlet through connecting pipes. Working fluid is injected into a cavity between the heat exchange tube A and the heat exchange tube outer cylinder A, one end of the blowoff valve is in butt joint with the waste heat recovery header pipe, and the other end of the blowoff valve penetrates through the shell, so that periodic self-inspection and blowdown cleaning are facilitated. The high-temperature working fluid pipe is fixed on the fixed derrick and fixedly connected with the outer barrel A of the heat exchange pipe in a sealing mode through the connecting pipes, the plurality of connecting pipes share one high-temperature working fluid pipe to form a series connection state, and therefore a target customer can conveniently take the high-temperature working fluid at any time.
The boiling-resistant steam-water separation component comprises a steam-water separation baffle plate, a fuel distribution pipe, an expansion joint A and a steam connecting pipe. The steam-water separation baffle is arranged at the upper part of the heat exchange pipe A in a circumferential arrangement and is provided with a plurality of holes. When the steam moves upwards, the steam and the water are separated through the hollow ceramic ring after contacting the baffle plate. The fuel distributing pipe is provided with a plurality of holes, one end of the connecting pipe is butted with the burner B, the connecting pipe is arranged into a C shape along the circumference of the heat exchange pipe outer cylinder A, and the two ends of the connecting pipe are sealed and fixed on the heat exchange pipe outer cylinder A. One end of the steam connecting pipe is connected with the upper end of the heat exchange pipe outer barrel A, and the other end of the steam connecting pipe is welded and fixed on the heat exchange pipe outer barrel B, so that the saturated steam can move upwards orderly. The expansion joint A is welded and sealed and fixed at the upper ends of the heat exchange tube A and the heat exchange tube outer cylinder A.
The target superheated combined supply component comprises a heat exchange tube B, a heat exchange tube outer barrel B, a combustor B, an expansion joint B and a superheated steam main pipe. The heat exchange tube B is sleeved in the heat exchange tube outer cylinder B, a gap is reserved between the two tubes, the two ends of the heat exchange tube B are welded and sealed by seal heads, a hole is formed in the center of each seal head, smoke gas can rise conveniently, and the combustor B is installed on the lower end extension section of the heat exchange tube B with the hole. The top of the heat exchange tube B and the top of the heat exchange tube outer cylinder B are provided with expansion joints B which play a role in eliminating the expansion amount after being heated axially in time.
The tail heat exchange recovery assembly comprises a working fluid pipe inlet, a heat exchange pipe C, a heat exchange pipe outer barrel C, a tail gas pipe, a waste heat recovery pipe outlet, a sealing plate, a top cover, a forced exhauster and a tail gas outlet. The tail smoke tube is welded and fixed with the expansion joint B, the top of the tail smoke tube is sealed and welded by a seal head, one end of the heat exchange tube C is welded with a smoke vent which is arranged on the periphery of the tail smoke tube, and the other end of the heat exchange tube C extends out of a sealing plate body which is provided with a hole. The outer cylinder C of the heat exchange tube is welded with the expansion joint B in a sealing mode, working fluid is injected between the outer cylinder C of the heat exchange tube and the tail smoke tube, and the inlet of the working fluid tube is fixed on the inward side of the outer cylinder of the heat exchange tube in a sealing mode through a connecting pipe fitting. The outlet of the waste heat recovery pipe is sealed and fixed at the inward side of the upper part of the outer cylinder of the heat exchange pipe. The sealing plate is provided with a hole with the size of a tail smoke pipe. The closing plate and the top cover are fixed on the shell through screws. The forced exhauster and the tail smoke outlet are arranged on the top cover.
The central intelligent controller and the accessories comprise a central intelligent controller, a shell, a heat preservation element and a fixed derrick. The central intelligent controller is fixed on the right position of the front surface of the shell, and various components of the intelligent control system are arranged in the central controller, including a temperature sensor, a pressure sensor, a smoke gas flow sensor, a water cut-off compensator, an alarm sensor, a fuel flow controller, a single-group/combined ignition controller, a forced exhauster and an overpressure emptying sensor. The temperature sensors are arranged in a flue gas channel naturally formed by the heat exchange tubes A, B and C and on the high-temperature working fluid tube, the superheated steam main pipe, the waste heat recovery tube outlet, the working fluid tube inlet and the steam-water separation resistance plate section. The heat preservation element is fixed on the inner side of the shell, and the shell is fixed on the bottom plate. The fixed derrick is arranged at the corresponding centers of the two groups of heat exchange tube outer cylinders A and B and is fixed on the bottom plate. Other fittings are provided at necessary positions as required. Pressure sensors are arranged in cavities among the fuel main pipe, the heat exchange pipe A, the heat exchange pipe B, the tail smoke pipe, the heat exchange pipe outer barrel A, the heat exchange pipe outer barrel B and the heat exchange pipe outer barrel C, and in the high-temperature working fluid pipe, the superheated steam main pipe and the steam-water separation resistance plate section. The flue gas flow sensor is mainly arranged in the cavity of the tail gas pipe and the top cover. The inlet of the working fluid pipe is provided with a water-break compensator, and the alarm sensor is arranged on the heat exchange pipe C. The fuel flow controller and the single-group/combined-group ignition controller are arranged on the fuel manifold and the burners A and B. The forced-exhaust and overpressure emptying sensors are arranged on the top cover and the superheated steam header pipe.
Preferably, the other features of the double-pressure direct-combustion reheat type heat output apparatus of the present invention include:
the heat exchange tubes A, B and C are circumferentially provided with radiating fins and are fixed by welding, so that the purpose of rapid heat exchange is achieved.
The heat exchange tube A, the heat exchange tube B, the heat exchange tube C, the heat exchange tube outer cylinder A, the heat exchange tube outer cylinder B, the heat exchange tube outer cylinder C and the tail smoke tube are three sections of components which are separately arranged, closely connected and fixed into a whole. When the system is applied, a single group can be used, and a plurality of groups can be used in series or in parallel according to the requirements of target customers.
The steam-water separation baffle is composed of a group of two to six punched annular metal plates and is fixed with the heat exchange tube A through welding. The metal plates are hollowed out, and hollow ceramic elements or other tubular objects made of high-temperature-resistant hollowed-out materials are placed at the hollowed-out positions between the metal plates, so that water drops can flow back and steam can rise after gas is blocked.
The heat exchange tube A, the heat exchange tube B, the heat exchange tube C, the heat exchange tube outer cylinder A, the heat exchange tube outer cylinder B, the heat exchange tube outer cylinder C and the tail smoke tube can be made into round tubes by titanium-containing high-quality carbon structural steel, alloy structural steel, stainless steel or other metal materials with high temperature resistance, small expansion coefficient and high heat conduction. The top of the tail smoke tube is sealed and welded by an end socket, a plurality of holes are formed in the circumferential direction of the tube, and each hole is welded with a heat exchange tube C, so that the tail smoke is discharged from each heat exchange tube C after being blocked in top punching.
The superheated steam main pipe, the expansion joint A, the expansion joint B, the working fluid pipe and the high-temperature working fluid pipe can be made of titanium-containing high-quality carbon structural steel, alloy structural steel, stainless steel or other metal round pipes with high temperature resistance, high pressure resistance and high expansion resistance. A plurality of holes are formed in the two sides of the superheated steam main pipe according to the target task requirement, so that superheated steam generated by the monomer multi-combination heat exchange pipes can be collected on one main pipe conveniently.
The device can fully utilize the heat collected by the solar heat collector and the recovered hot water cooled by the photovoltaic cell panel, can reach the target temperature only by further heating, fully embodies the concepts of energy conservation and environmental protection, and realizes the purpose of emission reduction. Finally, the effect of replenishing heat at any time can be ensured no matter in rainy days or in weak sunshine or at night. The invention is shown in the world with a brand-new thought and a strict structure, and is bound to become a new generation of staple products incomparable with the field.
The invention can be widely applied to the fields of industry and agriculture, such as power generation, lithium bromide air conditioning refrigeration, heating, drying, spinning, printing and dyeing, papermaking, rubber, seawater desalination and the like, which need saturated steam, superheated steam and boiled water.
The invention is a special device which can be matched with a solar heat collection system and a PV/T composite optimization system for use, and can be certainly used as a lead product in future fuel oil, gas-fired boilers, steam furnaces and superheater integrated markets.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings. Wherein:
FIG. 1 is a schematic structural diagram of a double-pressure direct-combustion reheat type thermal output apparatus according to the present invention;
fig. 2 is a schematic diagram of a central intelligent controller of a double-pressure direct-combustion reheating type thermal output device according to the invention.
Detailed Description
As shown in fig. 1, a double-pressure direct-combustion reheating thermal output device according to an embodiment of the present invention includes a quick-acting energy-supplementing linkage component, a boil-blocking steam-water separation component, a target superheat co-generation component, a tail heat exchange recovery component, a central intelligent controller, and accessories.
Wherein, quick-acting complementary energy linkage subassembly include: burner a14, fuel header inlet 17, fuel distributor 16, fuel branch 12, waste heat recovery inlet 13, waste heat recovery branch 22, waste heat recovery header 21, high temperature working fluid pipe 26, working fluid 11, heat exchange pipe a9, heat exchange pipe outer barrel Ai0, working fluid pump 18, blowoff valve 15, and base 19. One end of the fuel main pipe is in sealed butt joint with the fuel distributor 16, the other end of the fuel main pipe is in butt joint with external fuel, the burner A14 is in sealed fixed connection with the fuel distributor 16 through a connecting pipe, and the fuel branch pipe 12 is connected out of the fuel main pipe and extends upwards into the fuel distribution pipe 25 in the anti-boiling water-steam separation assembly. The heat exchange tube A9 is sleeved in the heat exchange tube outer cylinder A10 to form a cavity, one end of the heat exchange tube A9 is welded and sealed by a fixed seal head, a flue gas hole is formed for upward exhaust, a hole with the size equal to that of the burner is formed in the center of the other end of the heat exchange tube A9 for conveniently arranging the burner A14, and the burner A14 is stably installed on the base 19. One end of the waste heat recovery main pipe 21 is in butt joint with the working fluid pump 18, the other end of the waste heat recovery main pipe is provided with a four-way flange, and a single group of adjacent waste heat recovery branch pipes 22 are in fixed butt joint with the four-way flange through screws and are connected into the waste heat recovery inlet 13 through connecting pipes. Working fluid 11 is injected into a cavity between the heat exchange tube A9 and the heat exchange tube outer cylinder A10, one end of a blowdown valve 15 is in butt joint with the waste heat recovery header pipe 21, and the other end of the blowdown valve penetrates through the shell 23, so that periodic self-checking, blowdown and cleaning are facilitated. The high-temperature working fluid pipe 26 is fixed on the fixed derrick 4 and is fixedly connected with the heat exchange pipe outer barrel A10 in a sealing mode through a connecting pipe, and a plurality of connecting pipes share one high-temperature working fluid pipe 26 to form a serial connection state, so that a target customer can conveniently take the high-temperature working fluid at any time.
The boiling water-vapor-water separation preventing assembly comprises a water-vapor separation preventing plate 8, a fuel distributing pipe 25, an expansion joint A7 and a steam connecting pipe 27. The steam-water separation baffle 8 is arranged at the upper part of the heat exchange pipe A9, is arranged in a circumferential direction and is provided with a plurality of holes. When the steam moves upwards, the steam and the water are separated through the hollow ceramic ring after contacting the baffle plate. The fuel distribution pipe 25 is provided with a plurality of holes and butted with a burner B6 at one end by a connecting pipe, arranged in a C shape along the circumference of the heat exchange tube outer cylinder A10, sealed at both ends and fixed on the heat exchange tube outer cylinder A10. One end of the steam connecting pipe 27 is connected with the upper end of the heat exchange pipe outer cylinder A10, and the other end is welded and fixed on the heat exchange pipe outer cylinder B5, so that the saturated steam can move upwards orderly. The expansion joint A7 is welded, sealed and fixed on the upper ends of the heat exchange tube A9 and the heat exchange tube outer cylinder A10.
The target superheated cogeneration assembly comprises heat exchange tube B28, heat exchange tube outer drum B5, burner B6, expansion joint B3 and superheated steam header 29. The heat exchange tube B28 is sleeved in the heat exchange tube B5, a gap is left between the two tubes, the two ends are welded and sealed by end sockets, the center of each end socket is provided with a hole, so that the smoke can rise conveniently, and the burner B6 is arranged on the lower end extension section of the heat exchange tube B28 with the hole. The top parts of the heat exchange tube B28 and the heat exchange tube outer barrel B5 are provided with expansion joints B3, and the expansion amount after axial heating is eliminated in time.
The tail heat exchange recovery assembly comprises a working fluid pipe inlet 35, a heat exchange pipe C1, a heat exchange pipe outer barrel C2, a tail smoke pipe 36, a waste heat recovery pipe outlet 31, a sealing plate 30, a top cover 32, a forced exhauster 33 and a tail smoke outlet 34. The tail smoke pipe 36 is welded and fixed with the expansion joint B3, the top is sealed and welded by a seal head, one end of the heat exchange pipe C1 is welded with a smoke vent which is arranged on the periphery of the tail smoke pipe 36, and the other end of the heat exchange pipe C1 extends out of a sealing plate body 30 which is provided with a hole. The heat exchange tube outer cylinder C2 is welded with the expansion joint B3 in a sealing mode, working fluid 11 is injected between the heat exchange tube outer cylinder C2 and the tail smoke tube 36, and the inlet 35 of the working fluid tube is fixed on the inward side of the heat exchange tube outer cylinder in a sealing mode through a connecting pipe fitting. The outlet 31 of the waste heat recovery tube is hermetically fixed on the inward side of the upper part of the outer tube of the heat exchange tube. The sealing plate 30 is provided with a hole with the size of a tail smoke pipe 36. The cover plate 30 and the top cover 32 are fixed to the housing 23 by screws. The forced exhauster 33 and the tail smoke outlet 34 are arranged on the top cover 32.
As shown in fig. 2, the central intelligent controller and the accessories comprise the central intelligent controller, a shell 23, a heat preservation element 24, a fixed derrick 4 and other components. The central intelligent controller is fixed on the right position of the front surface of the shell 23, and various components of an intelligent control system are arranged in the central controller, wherein the components comprise a temperature sensor, a pressure sensor, a smoke gas flow sensor, a water-break compensation and alarm sensor, a fuel flow controller, a single-group/combined ignition controller, a forced exhaust device 33 and an overpressure emptying sensor. The temperature sensors are arranged in a flue gas channel naturally formed by the heat exchange tube A9, the heat exchange tube B28 and the heat exchange tube C1 and on the sections of the high-temperature working fluid tube 26, the superheated steam header pipe 29, the waste heat recovery tube outlet 31, the working fluid tube inlet 35 and the steam-water separation baffle 8. The heat-insulating element 24 is fixed inside the housing 23, and the housing 23 is fixed on the bottom plate 20. The fixed derrick 4 is arranged at the corresponding center of the two sets of heat exchange tube outer cylinders A10 and B5 and fixed on the bottom plate 20. Other fittings are provided at necessary positions as required. Pressure sensors are arranged in cavities among the fuel header pipe, the heat exchange pipe A9, the heat exchange pipe B28, the tail smoke pipe 36, the heat exchange pipe outer cylinder A10, the heat exchange pipe outer cylinder B5 and the heat exchange pipe outer cylinder C2, and sections of the high-temperature working fluid pipe 26, the superheated steam header pipe 29 and the steam-water separation baffle 8. The flue gas flow sensor is mainly arranged in the cavity of the tail flue pipe 36 and the top cover 32. The working fluid pipe inlet 35 is provided with a water cut-off compensator and the alarm sensor is provided on heat exchange pipe C1. The fuel flow controller and the single/combined ignition controller are arranged on a fuel manifold and a burner A14 and a burner B6. Forced-draft and overpressure vent sensors are arranged on the top cover 32 and the superheated steam header 29.
In an embodiment of the present invention, preferably, heat dissipating fins are circumferentially arranged on the heat exchanging tube a9, the heat exchanging tube B28, and the heat exchanging tube C1, and the heat dissipating fins may be spiral heat exchanging fins, and are fixed by welding to achieve the purpose of rapid heat exchange.
The heat exchange tube A9, the heat exchange tube B28, the heat exchange tube C1, the heat exchange tube outer cylinder A10, the heat exchange tube outer cylinder B5, the heat exchange tube outer cylinder C2 and the tail smoke tube 36 are components which are arranged in a split way, closely connected and fixed into a whole in a superposition mode. When the system is applied, a single group can be used, and a plurality of groups can be used in series or in parallel according to the requirements of target customers.
The steam-water separation baffle 8 is formed by welding and fixing a group of two to six punched annular metal plates and a heat exchange tube A9. The metal plates are hollowed out, and hollow ceramic elements or other tubular objects made of high-temperature-resistant hollowed-out materials are placed at the hollowed-out positions, so that water drops can flow back and steam can rise after gas is blocked.
The heat exchange tube A9, the heat exchange tube B28, the heat exchange tube C1, the heat exchange tube outer cylinder A10, the heat exchange tube outer cylinder B5, the heat exchange tube outer cylinder C2 and the tail smoke tube 36 can be round tubes made of titanium-containing high-quality carbon structural steel, alloy structural steel, stainless steel or other high-temperature-resistant metal materials with small expansion coefficient and quick heat conduction. The top of the tail smoke tube 36 is sealed and welded by a seal head, a plurality of holes are formed in the circumferential direction of the tube, and each hole is welded with a heat exchange tube C1, so that the tail smoke is blocked from being ejected and then is discharged from each heat exchange tube C1.
The superheated steam main pipe 29, the expansion joint A7, the expansion joint B3, the working fluid pipe 35 and the high-temperature working fluid pipe 26 can be titanium-containing high-quality carbon structural steel, alloy structural steel, stainless steel or other metal round pipes with high temperature resistance, high pressure resistance and high expansion resistance. The two sides of the superheated steam main pipe 29 are provided with a plurality of holes according to the requirement of a target task, so that superheated steam generated by the monomer multi-combination heat exchange pipes can be conveniently collected on one main pipe.
The working principle of the invention is as follows:
working fluid enters a cavity between the tail smoke pipe and the heat exchange pipe outer cylinder C from an inlet of the working fluid pipe through a connecting pipe, enters the waste heat recovery branch pipe through an outlet of the waste heat recovery pipe, is pressurized and injected into the cavity between the heat exchange pipe A and the heat exchange pipe outer cylinder A through a working fluid pump after being temporarily stored by a waste heat recovery main pipe, and rapidly absorbs heat from the inner wall of the heat exchange pipe A and radiates the heat into the cavity through radiating fins or spiral heating fins arranged on the whole body under the action of high temperature generated by ignition and combustion of the combustor A, so that the working fluid in the cavity is rapidly heated, the molecular state of the working fluid is drastically changed after the working fluid is heated, the volume is increased and lightened, and the working. When high-temperature liquid and high-temperature high-pressure gas move to the steam-water separation baffle, the liquid is blocked and falls, the high-temperature high-pressure gas continues to rise by utilizing the advantages of light volume and high impulsive force, when the high-temperature high-pressure gas rushes to the upper part, the high-temperature high-pressure gas is blocked when meeting the sealing plate, the forced diversion is carried into a cavity between the heat exchange tube B and the heat exchange tube outer barrel B through a steam connecting tube, the high-temperature high-pressure gas is further reheated under the high-temperature reheating effect of the combustor B, the target temperature and pressure are quickly realized through the steam temperature and pressure, the realized superheated steam enters a superheated steam main pipe through the connecting tube, and. Thereby entering the next ordered flow.
When the tail smoke after combustion moves upwards all the way, the tail smoke reaches the top of the tail smoke pipe and is blocked when meeting the sealing end socket. When the tail smoke is forcedly shunted and passes through the heat exchange tubes C arranged on the periphery of the tail smoke tube, the heat dissipation fins or the spiral heat fins arranged on the periphery of the heat exchange tubes C rapidly conduct heat and heat working fluid in a cavity between the tail smoke tube and the heat exchange tube outer cylinder C. And the cooled tail smoke naturally enters the top cover from the outlet of the heat exchange pipe C and is discharged from the outlet of the tail smoke. And the working fluid with certain temperature heated by the tail smoke enters the waste heat recovery pipe from the outlet for recycling, so that the next procedure is carried out.
The central intelligent controller controls the subsection, grouping or integral ignition and fuel supply of the whole device so as to ensure the safe and orderly operation of the device. And the sensors distributed at each section are used for displaying important information of temperature, pressure, flow velocity and the like of the working fluid in the tail smoke exchange recovery section, the target overheating combined supply section, the boil-resistant steam-water separation section and the quick-acting energy supplementing linkage section, and when the tail gas is detected to be discharged smoothly, the tail gas forced exhauster is automatically opened within seconds, so that the normal work of the combustor and the flue is ensured. When the phenomena of insufficient water, water cut-off, overheating, overhigh pressure and insecurity are detected, the intelligent controller can take corresponding remedial and automatic protective measures, including controlling the gaseous fuel to enter, relieving pressure and emptying. When the target task requires excessive and excessive gas consumption and hot water consumption, multiple groups of or all heat exchange tubes can be started by self until the designed maximum power is reached. If the target task requires only a proper amount of supplementary heat sources, the intelligent controller can temporarily close the redundant heat exchange tubes, so that the energy-saving purpose is achieved.
The invention has obvious technical and economic advantages, and is described in detail as follows:
1. the quick-acting energy-supplementing linkage matching technology has the advantages of high heating speed and large heat production quantity.
The special heat exchange structure, namely the sleeve and the radiating fins, is adopted, so that the heat exchange tube has a large heat exchange area, and the target working medium to be heated is stored in a limited tube cavity formed between the heat exchange tube A and the heat exchange tube outer cylinder A, between the heat exchange tube B and the heat exchange tube outer cylinder B and between the tail smoke tube and the heat exchange tube outer cylinder C, so that the heating speed is increased, and the heat production capacity is large. And the working medium in the cavity is divided and heated by the radiating fins or the spiral heat fins arranged on the heat exchange tube A, and the conduction speed (also called heat flow rate) in the object is proportional to the temperature gradient and the cross section area through which the heat flow passes according to Fourier heat conduction law.
Therefore, the large-caliber inner and outer sleeve assembly (with the radiating fins or the spiral heating fins) has the characteristics of less heating working fluid and easiness in gasification and evaporation of the working fluid, and can be used for wearing a single-group outer sleeve as a heat-insulation element if necessary, so that the heating effect is improved. The solar energy heat collector is particularly matched with a solar energy heat collector and a PV/T electric heat cogeneration device for use, so that the energy can be saved, the carbon dioxide emission can be reduced, and the quick heating advantage of the solar energy heat collector can be embodied.
2. The boiling-resistant steam-water separation effect is obvious, and the quality of steam is excellent.
Due to the adoption of a special mechanical structure principle, the defects that a common steam furnace and a reheating boiler are not provided with a steam-water separation device or a steam-water separation part is completed by additionally arranging steam-water separation equipment are overcome. The invention arranges the steam-water separation structure in the cavity between the heat exchange tube A and the heat exchange tube outer cylinder A, adopts the multilayer annular punching baffle plate and hollow ceramic ring continuous boiling water resisting technology, reduces the water molecules in the saturated steam to the minimum value, and provides high-quality steam for a superheat section or a target customer.
3. The target overheating combined supply and pressure recovery dual-high optimization technology has the advantages of large gas forming amount and wide application range.
The distinctive effect of the special heat exchange concept and the special mechanical structure layout determines the distinctive effect. The ordinary superheater adopts fuel with high heat value to reheat so as to meet the requirements of target tasks, and the invention uses the waste heat of tail smoke and supplements partial heat source to convert saturated steam into superheated steam, thereby achieving the purpose of high temperature and high pressure. The fin or the spiral fin provided around the heat exchanging tube B plays a role, and therefore, the amount of generated air is large. If the target task does not require too high a quality of superheated steam, this can be done by automatically adjusting the burner B off. The target client can obtain saturated steam or superheated steam according to the desired requirements to meet the production and living needs of the client, so that energy is reasonably utilized better, the expenditure is saved, and the cost is reduced.
4. The tail heat exchange recovery is thorough, the structure is tight, and the waste heat recovery rate is high.
The tail smoke enters a tube body of a heat exchange tube C arranged on the circumferential direction of the tail smoke tube after the top of the tail smoke is blocked, working fluid in a cavity between an outer tube C of the heat exchange tube C and the heat exchange tube C is heated through radiating fins or spiral heat fins distributed on the whole body of the heat exchange tube C, the heat of the rising tail smoke is fully utilized and intercepted for recycling, the waste heat recovery rate reaches over 75 percent, the thermal resistance is small, and the problem of difficult smoke emission cannot be generated. The design and the manufacturing process completely accord with three laws of thermodynamic heat conduction, convection heat transfer and radiation heat transfer, so the waste heat recovery device is bound to be a preferred product of the waste heat recovery device in the industries of steam furnaces and direct-fired boilers in the future.
5. The central intelligent controller is operated intelligently and managed in a humanized mode.
If the four major components of the quick-acting energy supplementing linkage component, the boiling-stopping steam-water separation component, the target overheating combined supply component and the tail heat exchange recovery component are four limbs of one person, the central intelligent controller is the brain of the whole device. The invention is controlled in full intelligence, generally has employment personnel with more than Chinese scholars, and can be operated on duty after a period of professional training. Whether single-group ignition or combined ignition is adopted, as long as the task target is clear, the ignition can be finished in a few seconds by easily pressing a key. The recovery of working fluid, heating evaporation to the generation and collection of reheated steam, and the control of flow and flow rate of various gaseous fuels to the possible unsafe factors such as water cut-off, compensation, overpressure, emptying, negative pressure exhaust and the like all realize early warning and humanized management.
The present invention is not limited to the embodiments described above, and those skilled in the art may make modifications or changes within the scope of the disclosure without departing from the spirit of the present invention, so that the scope of the present invention is defined by the appended claims.
Claims (6)
1. A kind of recompression direct combustion reheat type heat power take-off, wherein the said apparatus includes the quick-acting complementary energy linkage assembly, blocks the boiling steam-water separation assembly, the goal and overheats and unites the component, tail heat exchange recovery assembly and central intelligent controller and fittings; wherein,
the quick-acting energy supplementing linkage assembly comprises a combustor A, a fuel main pipe inlet, a fuel distributor, fuel branch pipes, a waste heat recovery inlet, waste heat recovery branch pipes, a waste heat recovery main pipe, a high-temperature working fluid pipe, a working fluid, a heat exchange pipe A, a heat exchange pipe outer cylinder A, a working fluid pump, a blow-down valve and a base; one end of the fuel main pipe is in sealed butt joint with the fuel distributor, the other end of the fuel main pipe is in butt joint with external fuel, the combustor A is in sealed fixed connection with the fuel distributor through a connecting pipe, and the fuel branch pipe is connected out of the fuel main pipe and extends upwards to enter the fuel distribution pipe in the anti-boiling steam-water separation assembly; the heat exchange pipe A is sleeved in the heat exchange pipe outer barrel A to form a cavity, one end of the heat exchange pipe A is welded and sealed by a fixed end socket and is provided with a flue gas hole for upward exhaust, the center of the other end of the heat exchange pipe A is provided with a hole with the size equal to that of a burner for conveniently arranging the burner A and stably installing the burner A and a base, one end of the waste heat recovery main pipe is butted with a working fluid pump, the other end of the waste heat recovery main pipe is provided with a four-way flange, and a single group of adjacent waste heat recovery branch pipes are fixedly butted with the four-; working fluid is injected into a cavity between the heat exchange tube A and the heat exchange tube outer cylinder A, one end of the blowoff valve is butted on the waste heat recovery header pipe, and the other end of the blowoff valve penetrates through the shell; the high-temperature working fluid pipe is fixed on the fixed derrick and is fixedly connected with the outer tube A of the heat exchange tube in a sealing way through a connecting pipe, and a plurality of connecting pipes share one high-temperature working fluid pipe to form a serial connection state;
the boiling-resistant steam-water separation component comprises a steam-water separation baffle plate, a fuel distribution pipe, an expansion joint A and a steam connecting pipe; the steam-water separation baffle is arranged at the upper part of the heat exchange tube A, is circumferentially arranged and is provided with a plurality of holes, and when steam moves upwards, the steam-water separation baffle is contacted with the steam-water separation baffle and then carries out steam-water separation through the hollow ceramic ring; the fuel distribution pipe is provided with a plurality of holes, one end of the fuel distribution pipe is butted with a burner B of the target overheating combined supply assembly by using a connecting pipe, the fuel distribution pipe is arranged into a C shape along the circumferential direction of the heat exchange pipe outer cylinder A, and two ends of the heat exchange pipe outer cylinder A are sealed and fixed on the heat exchange pipe outer cylinder A; one end of the steam connecting pipe is connected to the upper end of the heat exchange pipe outer barrel A, and the other end of the steam connecting pipe is welded and fixed on the heat exchange pipe outer barrel B of the target overheating combined supply component; the expansion joint A is welded, sealed and fixed at the upper ends of the heat exchange tube A and the heat exchange tube outer cylinder A;
the target overheating combined supply component comprises a heat exchange tube B, a heat exchange tube outer barrel B, a combustor B, an expansion joint B and an overheated steam main pipe; the heat exchange tube B is sleeved in the heat exchange tube outer cylinder B, a gap is reserved between the two tubes, the two ends of the heat exchange tube B are welded and sealed by end sockets, a hole facilitating the rising of flue gas is formed in the center of each end socket, the combustor B is installed on the lower end extension section of the heat exchange tube B with the hole, and the top of each heat exchange tube B and the top of the heat exchange tube outer cylinder B are provided with expansion joints B;
the tail heat exchange recovery assembly comprises a working fluid pipe inlet, a heat exchange pipe C, a heat exchange pipe outer barrel C, a tail gas pipe, a waste heat recovery pipe outlet, a sealing plate, a top cover, a forced exhauster and a tail gas outlet; the tail smoke tube is welded and fixed with the expansion joint B, the top of the tail smoke tube is sealed and welded by a seal head, one end of the heat exchange tube C is welded with a smoke exhaust hole formed in the circumferential direction of the tail smoke tube, and the other end of the heat exchange tube C extends out of a sealing plate body with a hole; the heat exchange tube outer cylinder C is welded with the expansion joint B in a sealing mode, working fluid is injected between the heat exchange tube outer cylinder C and the tail smoke tube, and an inlet of the working fluid tube is fixed on the inward side of the heat exchange tube outer cylinder C in a sealing mode through a connecting pipe fitting; the outlet of the waste heat recovery pipe is hermetically fixed on the inward side of the upper part of the heat exchange pipe outer barrel C; the sealing plate is provided with a hole with the size of a tail smoke pipe, the sealing plate and the top cover are fixed on the shell through screws, and the forced exhauster and the tail smoke outlet are arranged on the top cover; and the number of the first and second groups,
the central intelligent controller and the accessories comprise a central intelligent controller, a shell, a heat preservation element and a fixed derrick; the central intelligent controller is fixed on the front side of the shell, and various components of an intelligent control system are arranged in the central intelligent controller, wherein the components comprise a temperature sensor, a pressure sensor, a flue gas flow sensor, a water cut-off compensator, an alarm sensor, a fuel flow controller, a single-group/combined-group ignition controller, a forced exhauster and an overpressure emptying sensor; wherein the temperature sensors are arranged in a flue gas channel naturally formed by the heat exchange tubes A, B and C, and on the high-temperature working fluid tube, the superheated steam main pipe, the waste heat recovery tube outlet, the working fluid tube inlet and the steam-water separation resistance plate section; the fixed derrick is arranged at the corresponding centers of the two groups of heat exchange tube outer cylinders A and B and is fixed on the bottom plate; the pressure sensors are arranged in cavities among the fuel main pipe, the heat exchange pipe A, the heat exchange pipe B, the tail smoke pipe, the heat exchange pipe outer cylinder A, the heat exchange pipe outer cylinder B and the heat exchange pipe outer cylinder C, and in the high-temperature working fluid pipe, the superheated steam main pipe and the steam-water separation resistance plate section; the flue gas flow sensor is arranged in the cavity of the tail gas pipe and the top cover; the water-break compensator is arranged on an inlet of the working fluid pipe; the alarm sensor is arranged on the heat exchange pipe C; the fuel flow controller and the single-group/combined-group ignition controller are arranged on the fuel main pipe, the combustor A and the combustor B; and the forced-ventilated and overpressure emptying sensors are arranged on the top cover and the superheated steam header pipe.
2. A double-pressure direct-combustion reheat type thermal output device as claimed in claim 1, wherein the heat exchange tubes a, B and C are circumferentially provided with fins, and are fixed by welding.
3. The re-pressure direct-combustion reheating thermal output device as claimed in claim 1, wherein the heat exchange tubes a, the heat exchange tubes B, the heat exchange tubes C, the heat exchange tube outer cylinder a, the heat exchange tube outer cylinder B, the heat exchange tube outer cylinder C and the tail smoke tube are three sections of components which are separately arranged, closely connected and fixed into a whole in a superposition mode, and the components fixed into a whole are in one group or multiple groups which are connected in series or in parallel.
4. The combined-pressure direct-combustion reheating type thermal output device as claimed in claim 1, wherein the steam-water separation baffle is formed by a group of two to six punched annular metal plates, the steam-water separation baffle is fixed with the heat exchange tubes A by welding, hollow parts are arranged among the metal plates, and hollow ceramic elements or tubular objects made of other high-temperature-resistant hollow materials are placed at the hollow parts among the plates.
5. The double-pressure direct-combustion reheating thermal output device as claimed in claim 1, wherein the heat exchange tubes a, B, C, a C and a tail smoke tube are round tubes made of titanium-containing high-quality carbon structural steel, alloy structural steel, stainless steel or other high-temperature-resistant, small-expansion-coefficient and fast-heat-conduction metal materials; the top of the tail smoke tube is sealed and welded by an end socket, a plurality of holes are formed in the circumferential direction of the tube, and each hole is welded with a heat exchange tube C.
6. The combined-pressure direct-combustion reheating thermal output device as claimed in claim 1, wherein the superheated steam main pipe, the expansion joint A, the expansion joint B, the working fluid pipe and the high-temperature working fluid pipe are circular pipes made of titanium-containing high-quality carbon structural steel, alloy structural steel, stainless steel or other high-temperature-resistant, high-pressure-resistant and expansion-resistant metal; and a plurality of holes are formed in the two sides of the superheated steam main pipe according to the requirement of a target task.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010570072 CN102155732B (en) | 2010-12-02 | 2010-12-02 | Double-pressure direct-combustion reheating-type heating power output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010570072 CN102155732B (en) | 2010-12-02 | 2010-12-02 | Double-pressure direct-combustion reheating-type heating power output device |
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| CN102155732A CN102155732A (en) | 2011-08-17 |
| CN102155732B true CN102155732B (en) | 2013-04-03 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08110095A (en) * | 1994-10-07 | 1996-04-30 | Harman Co Ltd | Hot water supplying apparatus |
| JP2002061961A (en) * | 2000-08-21 | 2002-02-28 | Takao Ishihara | Solar cogeneration integrated system |
| JP2002089994A (en) * | 2000-09-19 | 2002-03-27 | Kawasaki Thermal Engineering Co Ltd | Absorption type water cooling and heating device utilizing waste heat |
| CN101280912B (en) * | 2008-05-09 | 2010-12-08 | 包头博特科技有限责任公司 | Heat tube bundle concentric casing tube waste heat recovery boiler |
| CN101354152B (en) * | 2008-08-29 | 2010-06-16 | 云南天际旭能新能源科技有限公司 | Solar duplex energy-saving steam heating system |
| CN201568948U (en) * | 2009-11-23 | 2010-09-01 | 聂国栋 | Hot water circulating device |
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