CN115264475A - Multi-loop water circulation type steam boiler capable of preventing local overheating deformation - Google Patents
Multi-loop water circulation type steam boiler capable of preventing local overheating deformation Download PDFInfo
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- CN115264475A CN115264475A CN202210867869.0A CN202210867869A CN115264475A CN 115264475 A CN115264475 A CN 115264475A CN 202210867869 A CN202210867869 A CN 202210867869A CN 115264475 A CN115264475 A CN 115264475A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/38—Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes
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Abstract
The invention discloses a multi-loop water circulation type steam boiler capable of preventing local overheating deformation, which comprises a boiler body, a circulating device, a heating device and a water inlet pipe, wherein the boiler body is communicated with the circulating device through a pipeline, the heating device is connected with the boiler body, the water inlet pipe is communicated with the boiler body through a pipeline, a heating chamber is arranged on the boiler body, the heating device comprises a plurality of electric heating pipes, heating ends of the plurality of electric heating pipes are sequentially inserted into the heating chamber, and the water inlet pipe is communicated with the heating chamber through a pipeline. The furnace body is main support basis, installs each other device through the furnace body, carries out the water circulation through circulating device, carries out raw materials water heating through the rising temperature device, makes raw materials water thermal evaporation form vapor to supply with through the pipeline, carry out raw materials water supply through the inlet tube, the rising temperature room is main heating workpiece, carries out the steam evaporation, and the inlet tube heats, evaporates after carrying the rising temperature room with raw materials water.
Description
Technical Field
The invention relates to the technical field of steam boilers, in particular to a multi-loop water circulation type steam boiler capable of preventing local overheating deformation.
Background
In recent years, although various equipments are upgraded and replaced, steam boilers still have a relatively large usage amount, and as a relatively practical energy conversion device, the steam boilers convert input chemical energy, electric energy and heat energy of high-temperature flue gas into high-temperature steam through energy input, and the high-temperature steam has a relatively large proportion in daily life and industrial production.
However, the existing steam boiler has low energy utilization rate and low steam conversion efficiency, and can only meet the requirement of low-power steam supply. In the process of converting raw material water into steam, the raw material water is heated unevenly, so that heating and evaporation are uneven easily, and evaporation efficiency is affected.
In the heating engineering, because be heated unevenly, lead to local too big being heated easily, when serious, can cause overheated deformation even, influence the whole life of device, under high temperature high pressure state, local impaired even probably cause harm to operating personnel safety on every side. In addition, in the heating process, partial water mist is easily doped in the steam to form mixed gas-liquid, the existing requirements cannot be met easily, after the heating is completed, once the water mist content in the steam is too much, gas-liquid separation needs to be carried out through a separator, large heat loss is easily caused, and the steam conversion efficiency is influenced.
Disclosure of Invention
The present invention is directed to a multi-loop water-circulating steam boiler for preventing local overheating and deformation, so as to solve the above problems.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a prevent local overheat deformation's multiloop hydrologic cycle formula steam boiler, includes furnace body, circulating device, rising temperature device and inlet tube, furnace body and circulating device pipeline intercommunication, rising temperature device and furnace body connection, inlet tube and furnace body pipeline intercommunication are equipped with the heating chamber on the furnace body, and rising temperature device includes a plurality of electrothermal tubes, and a plurality of electrothermal tube heating ends insert in proper order in the heating chamber, inlet tube and heating chamber pipeline intercommunication.
The furnace body is main support basis, installs each other device through the furnace body, carries out the water circulation through circulating device, carries out raw materials water heating through rising temperature device, makes raw materials water thermal evaporation form vapor to supply with through the pipeline, carry out raw materials water supply through the inlet tube, rise the greenhouse and be main heating workpiece, carry out the steam evaporation, the inlet tube heats, evaporates after carrying the room that heaies up with raw materials water.
Further, be equipped with the evaporating chamber on the furnace body, communicate through the water conservancy diversion passageway between warming room and the evaporating chamber, the water conservancy diversion passageway is equipped with the shrinkage cavity in proper order along the rivers direction, throat and reaming, the shrinkage cavity diameter is followed the direction of shifting up and is steadilyd decrease the setting, the reaming diameter is followed the direction of shifting up and is increased progressively the setting, throat one side is equipped with the air flue, throat and air flue intercommunication, air flue one end and evaporating chamber upper strata intercommunication are kept away from to the throat, circulating device includes circulating water tank, circulating water tank and furnace body pipeline intercommunication, circulating water tank goes out the water end and is equipped with the moisturizing pipe, moisturizing pipe and warming chamber pipeline intercommunication, the warming device still includes a plurality of adjusting part, adjusting part number and electrothermal tube number adaptation, adjusting part arranges in the floating seat in, warming chamber bottom is equipped with a plurality of floating grooves, floating seat and floating groove sliding connection, be equipped with the inflation chamber on the floating seat, inflation chamber and floating groove intercommunication, the adjusting part includes the magnetic column, induction coil and roof upside are equipped with the thermal expansion gasbag, the upward extends outward and is equipped with the heat transfer board, induction coil and magnetic column and magnetic circuit are connected in the adjacent line, the adjacent induction circuit.
The evaporation chamber is separated from the warming chamber through the cavity-divided arrangement of the furnace body, the warming chamber is a main stress concentration area through the cavity-divided arrangement, the pressure control is convenient to carry out, the pressure is prevented from being overlarge, when the pressure is overlarge, partial pressure is conveyed into the evaporation chamber through the flow guide channel, the pressure maintaining balance is carried out, raw material water in the warming chamber is heated through the electric heating pipe, partial raw material water is evaporated after the heating and is accumulated above the warming chamber, the pressure in the warming chamber is increased, water in the warming chamber is jetted to the evaporation chamber along the flow guide channel along with the increase of the pressure in the warming chamber, the diameter of a shrinkage hole is gradually reduced, the flow speed is maximum along with the reduction of the diameter, the flow speed is maximum when the throat part is reached, the pressure is minimum, the gas in the gas passage is sucked, the gas passage is communicated with the upper layer of the evaporation chamber, so that the gas enters the raw material water in the throat part through the gas passage and forms a gas core, when raw material water enters the evaporation chamber through the chambering, the pressure of peripheral water is reduced along with the upward movement of the gas core, the gas core gradually expands to form bubbles, when the gas core moves to a gas-liquid interface, the pressure is minimum, the bubbles are crushed, the bubbles vibrate the peripheral water when being crushed, part of the bubbles are crushed to form water mist under the action of the vibration crushing, the water mist is dispersed in water vapor, water mist particles are gasified into water vapor along with the continuous upward floating and accumulation of heat, the water vapor conversion efficiency is improved, the power of adjacent electric heating tubes is adjusted through an adjusting assembly to prevent local deformation caused by overhigh temperature and influence on the service life of the whole device, the floating seat is installed through the floating groove, the floating seat can move upwards to slide along the floating groove under the action of the thermal expansion air bag, the heat exchange plate exchanges heat with the inner cavity and the outer cavity of the thermal expansion air bag, and the thermal expansion air bag is filled with compressed gas, the temperature of the raw material water is continuously raised along with the electric heating tubes, the compressed gas in the thermal expansion air bag is heated and expanded through the heat exchange of the return heat exchange plates, the magnetic columns are driven to move downwards through the top plate, the water body is heated through the plurality of electric heating tubes, the temperature of the water body is uniformly raised, the temperature rise of each adjusting circuit is kept consistent, when the local temperature rise is too high, the downward moving distance of the magnetic columns is increased, so that the current of the adjusting circuits is increased, the over-limit current is formed, the instantaneous current is positively correlated with the local temperature rise, and the heating power is reduced by controlling the adjacent electric heating tubes through the over-limit current; when the instantaneous current is smaller than the rated value, a low limit current is formed, and the adjacent electric heating tubes are controlled by the low limit current limit value to improve the heating power, so that the integral heating power is kept consistent, and the local temperature rise is avoided from being overhigh.
Furthermore, the shrinkage cavity inlet is positioned below the liquid level in the heating chamber, and a slope surface is arranged at the bottom of the heating chamber.
The shrinkage cavity inlet is communicated with the heating chamber to conduct liquid level diversion, the shrinkage cavity inlet is located below the liquid level to facilitate continuous diversion, raw material water is divided into hot areas through the slope surface of the bottom of the heating chamber, therefore, the raw material water is heated in a partition mode, when water is supplemented, the outlet of the water inlet pipe is located at the upper end of the slope surface, and the slope surface is automatically cleaned.
Furthermore, the adjusting assembly also comprises a guide rod and a stop coil, the top plate is in transmission connection with the magnetic column through the guide rod, the stop coil is positioned at the lower end of the adjusting groove, the upper end of the thermal expansion air bag is provided with a pressing seat, the pressing seat is in sliding connection with the expansion cavity, the expansion cavity is arranged in a step shape, the stop coil and the magnetic column form a stop circuit, and the stop circuit is intermittently communicated with the electric heating tube;
at the beginning: the pressing seat is positioned at the lower layer of the upper section of the expansion cavity;
after liquid injection: the pressing seat is positioned on the upper layer of the upper section of the expansion cavity.
After water injection is finished, compressed gas is contained in the thermal expansion air bag, under the action of buoyancy, the dead weight of the pressure seat is overcome, the pressure seat is driven to move upwards until the topmost end of the pressure seat moves upwards, the thermal expansion air bag expands along with heating, displacement is output downwards through the top plate due to the fact that the upper end of the pressure seat is limited, the top plate drives the magnetic columns to move downwards through the guide rods, the induction coils do cutting magnetic induction line movement, heating quality of the electric heating tubes is detected, raw material water in the heating chamber is heated in a partition mode through the slope, due to the fact that the height of the pressure seat is different, the electric heating tubes at the topmost end of the slope are evaporated firstly, and therefore the instantaneous expansion amount of the adjacent thermal expansion air bags is increased.
Furthermore, the outer ring of the guide rod is hermetically connected with a communicating inlet of the expansion cavity and the adjusting groove, and the stop coil is positioned on the lower side of the induction coil;
during adjustment: the magnetic column sliding stroke is within the length range of the induction coil;
when the time is cut off: the magnetic column sliding stroke is positioned in the length range of the cut-off coil.
When the heating efficiency of the electric heating tube is adjusted, the magnetic column moves in the induction coil, and when the instantaneous expansion amount of the thermal expansion air bag is too large, the magnetic column crosses the induction coil and enters the inner ring of the stop coil, so that the current generated on the stop coil is controlled, and the heating of the electric heating tube is stopped.
Further, the circulating device further comprises a detection assembly, an electromagnet and an adjusting magnet, a water outlet channel is arranged on one side of the evaporation chamber and comprises a positive flow port and a lateral flow port, the tail ends of the positive flow port and the lateral flow port are communicated with the evaporation chamber in an intersection mode, a detection cavity is arranged on the furnace body and is located at the intersection of the positive flow port and the lateral flow port, the detection assembly is located in the detection cavity and comprises a discharge needle and a polar plate, the discharge needle and the polar plate are respectively electrically connected with the positive electrode and the negative electrode of a power supply, the discharge needle and the polar plate are symmetrically arranged, the discharge needle, the polar plate and the power supply form a detection circuit, the adjusting magnet is rotationally connected with the inlet end of the positive flow port, a switching groove is arranged at the inlet end of the lateral flow port, and the electromagnet is arranged in the switching groove.
The water content of the water vapor at the water outlet channel is detected in real time through the detection assembly, the water vapor with the overhigh water content is prevented from entering a subsequent use environment to influence the transduction efficiency, the water outlet channel is arranged in a shunting manner, the discharge needle, the polar plate and the power supply form a detection circuit, the discharge needle and the polar plate are respectively arranged in the detection cavity, the discharge needle faces the polar plate, and when the water content of the water vapor is lower than a rated value, the air flow is discharged through the positive flow port and enters a subsequent stroke for transduction; when the water content in the water vapor is too large, the conductivity is increased, the instantaneous current value of the detection circuit is increased, and when the instantaneous current value is larger than a rated value, the adjusting magnet is rotated to plug the positive flow port, so that the air flow with the too large water content is discharged through the side flow port, and the gas-liquid separation is required when the air flow with the too large water content is prevented from being discharged.
Furthermore, the electromagnet is electrically connected with the detection circuit, the switching groove is arranged in an arc shape, the end part of the adjusting magnet is arranged in an arc shape, the adjusting magnet is connected with the switching groove in a sliding mode, and the opposite ends of the adjusting magnet and the electromagnet are magnetic poles with the same name. The regulating magnet is guided through the arc-shaped switching groove, when the current of the detection circuit is smaller than the rated value, the regulating magnet swings in the switching groove, and when the instantaneous current is larger than the rated value, the regulating magnet rotates upwards under the action of magnetic pole repulsion force, and the positive current port is blocked.
Preferably, the outlet end of the side flow port is provided with a circulating water pipe, and the circulating water pipe is communicated with a circulating water tank pipeline. The air flow with larger water content is discharged through the circulating water pipe through the side flow port and conveyed into the circulating water tank, so that water circulation is facilitated.
As optimization, the outlet end of the circulating water pipe is arranged below the liquid level of the circulating water tank. The outlet of the circulating water pipe is buried under the liquid level, so that high-temperature water-containing airflow enters the circulating water tank to preheat circulating water in the circulating water tank, and when water needs to be supplemented, the preheated circulating water is directly sent into the heating chamber through the water supplementing pipe to be heated and evaporated, so that the evaporation efficiency of raw material water is improved.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, raw material water in a heating chamber is heated through an electric heating pipe, part of the heated raw material water is evaporated, as the pressure in the heating chamber is increased, water in the heating chamber is jetted to the evaporation chamber along a flow guide channel, the flow rate is maximum when the water reaches the throat part, the pressure is minimum, gas enters the raw material water in the throat part through an air passage and forms a gas core, the gas core moves upwards to form bubbles, when the gas core moves to a gas-liquid junction surface, the pressure is minimum, the bubbles are crushed, the bubbles vibrate peripheral water body when being crushed, under the action of vibration and crushing, part of the bubbles are crushed to form water mist which is dispersed in water vapor, and as heat continuously floats upwards and accumulates, water mist particles are gasified into water vapor, and the water vapor conversion efficiency is improved; the water body is heated through the plurality of electric heating tubes, so that the temperature of the water body is uniformly raised, the temperature rise of each adjusting circuit is kept consistent, and the heating power is reduced by controlling the adjacent electric heating tubes through the over-limit current; after water injection is finished, the thermal expansion air bag expands along with heating, because the upper end of the thermal expansion air bag is limited, the thermal expansion air bag outputs displacement downwards through the top plate, the heating quality of the electric heating tubes is detected in real time, and when the instantaneous expansion amount is overlarge, the adjacent electric heating tubes are controlled to stop heating through cut-off current, so that overheating deformation is prevented; when the water content in the water vapor is lower than a rated value, the airflow is discharged through the positive flow port and enters a subsequent stroke for transduction; when the water content in the water vapor is too large, the conductivity is increased, the instantaneous current value of the detection circuit is increased, and when the instantaneous current value is larger than a rated value, the adjusting magnet is rotated to plug the positive flow port, so that the air flow with the too large water content is discharged through the side flow port, and gas-liquid separation is needed when the air flow with the too large water content is prevented from being discharged.
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 diagram of the general structure of the present invention;
FIG. 2 is a partial cross-sectional view of the circulation device of the present invention;
FIG. 3 is a schematic structural view of the furnace body of the present invention;
FIG. 4 is an enlarged view of portion A of the view of FIG. 3;
FIG. 5 is a sectional view taken along line H-H of the view of FIG. 4;
FIG. 6 is a schematic diagram of the floating state structure of the pressing base according to the present invention;
FIG. 7 is an enlarged view of portion B of the view of FIG. 3;
in the figure: 1-furnace body, 11-heating chamber, 111-slope surface, 112-floating groove, 12-evaporation chamber, 13-guide channel, 131-shrinkage hole, 132-throat part, 133-reaming hole, 134-air channel, 14-water outlet channel, 141-positive flow port, 142-side flow port, 15-detection cavity, 16-switching groove, 2-circulating device, 21-circulating water tank, 22-detection component, 221-pole plate, 222-discharge needle, 23-electromagnet, 24-adjusting magnet, 25-circulating water pipe, 26-water supplementing pipe, 3-heating device, 31-floating seat, 311-expansion cavity, 312-adjusting groove, 32-adjusting component, 321-magnetic column, 322-induction coil, 323-top plate, 324-guide rod, 325-stop coil, 33-thermal expansion air bag, 34-electric heating pipe, 35-pressure seat and 4-water inlet pipe.
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.
The invention provides the technical scheme that:
as shown in fig. 1 to 7, the multi-loop water circulation type steam boiler capable of preventing local overheating deformation comprises a boiler body 1, a circulating device 2, a heating device 3 and a water inlet pipe 4, wherein the boiler body 1 is communicated with the circulating device 2 through a pipeline, the heating device 3 is connected with the boiler body 1, the water inlet pipe 4 is communicated with the boiler body 1 through a pipeline, a heating chamber 11 is arranged on the boiler body 1, the heating device 3 comprises a plurality of electric heating pipes 34, heating ends of the electric heating pipes 34 are sequentially inserted into the heating chamber 11, and the water inlet pipe 4 is communicated with the heating chamber 11 through a pipeline.
Furthermore, the furnace body 1 is provided with an evaporation chamber 12, the heating chamber 11 is communicated with the evaporation chamber 12 through a flow guide channel 13, the flow guide channel 13 is sequentially provided with a shrinkage hole 131, a throat 132 and a reaming hole 133 along the water flow direction, the diameter of the shrinkage hole 131 is gradually decreased along the upward moving direction, the diameter of the reaming hole 133 is gradually increased along the upward moving direction, one side of the throat 132 is provided with an air channel 134, the throat 132 is communicated with the air channel 134, one end of the throat 132, far away from the air channel 134, is communicated with the upper layer of the evaporation chamber 12, the circulating device 2 comprises a circulating water tank 21, the circulating water tank 21 is communicated with the pipeline of the furnace body 1, the water outlet end of the circulating water tank 21 is provided with a water replenishing pipe 26, the water replenishing pipe 26 is communicated with the pipeline of the heating chamber 11, the heating device 3 further comprises a plurality of adjusting components 32, the number of the adjusting components 32 is matched with the number of the electric heating pipes 34, the adjusting components 32 are arranged in the floating seat 31, the bottom of the warming chamber 11 is provided with a plurality of floating grooves 112, the floating seat 31 is connected with the floating grooves 112 in a sliding manner, the floating seat 31 is provided with an expansion cavity 311, the expansion cavity 311 is communicated with the floating grooves 112, the lower side of the expansion cavity 311 is provided with an adjusting groove 312, the adjusting component 32 comprises a magnetic column 321, an induction coil 322 and a top plate 323, the upper side of the top plate 323 is provided with a heat expansion air bag 33, the heat expansion air bag 33 is provided with a heat exchange plate in an outward extending manner, the heat exchange plate is inserted into liquid in the adjusting groove 312, the induction coil 322 is arranged in the adjusting groove 312, the expansion cavity 311 is communicated with the adjusting groove 312, the heat expansion air bag 33 is in transmission connection with the magnetic column 321 through the top plate 323, the central line of the magnetic column 321 and the central line of the induction coil 322 are arranged in a collinear manner, the magnetic column 321 and the induction coil 322 form an adjusting circuit, and the electric heating tube 34 is electrically connected with an adjacent adjusting circuit.
The evaporation chamber 12 is separated from the warming chamber 11 through the cavity division of the furnace body 1, the warming chamber 11 is a main stress concentration area through the cavity division, the pressure control is convenient to be carried out, the pressure is prevented from being overlarge, when the pressure is overlarge, partial pressure is conveyed into the evaporation chamber 12 through the flow guide channel 13, the pressure maintaining balance is carried out, raw material water in the warming chamber 11 is heated through the electric heating pipe 34, the heated raw material water is evaporated and accumulated above the warming chamber 11, the pressure in the warming chamber 11 is increased, the water in the warming chamber 11 is jetted to the evaporation chamber 12 along the flow guide channel 13 along with the increase of the pressure in the warming chamber 11, the diameter of the shrinkage hole 131 is gradually reduced, the flow rate is maximum along with the reduction of the diameter, the flow rate is maximum when the water reaches the throat part 132, the pressure is minimum, the gas in the gas passage 134 is sucked, and the gas passage 134 is communicated with the upper layer of the evaporation chamber 12, therefore, gas enters raw material water in the throat 132 through the air passage 134 to form a gas core, when the raw material water enters the evaporation chamber 12 through the reaming hole 133, the pressure of peripheral water is reduced along with the upward movement of the gas core, the gas core gradually expands to form bubbles, when the gas core moves to a gas-liquid interface, the pressure is minimum, the bubbles are crushed, the bubbles vibrate to the peripheral water when being crushed, under the action of vibration and crushing, partial bubbles are crushed to form water mist which is dispersed in the water vapor, along with the continuous upward floating and accumulation of heat, water mist particles are gasified into the water vapor, the water vapor conversion efficiency is improved, the power of adjacent electric heating tubes 34 is adjusted through the adjusting assembly 32, the local deformation caused by overhigh temperature is prevented, the service life of the whole device is influenced, the floating seat 31 is installed through the floating groove 112, the floating seat 31 can move upwards and slide along the floating groove 112 under the buoyancy action of the thermal expansion air bag 33, the heat exchange plate is used for exchanging heat between the inner cavity and the outer cavity of the heat expansion air bag 33, the heat expansion air bag 33 is filled with compressed gas, the temperature of raw material water is continuously increased along with the heating of the electric heating tubes 34, the compressed gas in the heat expansion air bag 33 is heated and expanded through the heat exchange plate, the magnetic columns 321 are driven to move downwards through the top plate 323, the water body is heated through the plurality of electric heating tubes 34, the water body is uniformly heated, the temperature rise of each adjusting circuit is kept consistent, when the local temperature rise is overhigh, the downward moving distance of the magnetic columns 321 is increased, so that the current of the adjusting circuits is increased, the over-limit current is formed, the instantaneous current is positively correlated with the local temperature rise, and the adjacent electric heating tubes 34 are controlled to reduce the heating power through the over-limit current; when the instantaneous current is smaller than the rated value, a low-limit current is formed, and the low-limit current-limiting value is used for controlling the adjacent electric heating tubes 34 to improve the heating power, so that the consistency of the whole heating power is ensured, and the local overhigh temperature rise is avoided.
Further, the inlet of the shrinkage cavity 131 is positioned below the liquid level in the warming chamber 11, and the bottom of the warming chamber 11 is provided with a slope 111.
The inlet of the shrinkage cavity 131 is communicated with the warming chamber 11 for liquid level diversion, is positioned below the liquid level and is convenient for continuous diversion, raw material water is divided into various hot areas through the slope 111 at the bottom of the warming chamber 11 so as to be heated in a subarea mode, and when water is supplemented, the outlet of the water inlet pipe 4 is positioned at the upper end of the slope 111 to automatically clean the slope 111.
Further, the adjusting assembly 32 further comprises a guide rod 324 and a stop coil 325, the top plate 323 is in transmission connection with the magnetic column 321 through the guide rod 324, the stop coil 325 is located at the lower end of the adjusting groove 312, the upper end of the thermal expansion air bag 33 is provided with a pressure seat 35, the pressure seat 35 is in sliding connection with the expansion cavity 311, the expansion cavity 311 is in ladder-shaped arrangement, the stop coil 325 and the magnetic column 321 form a stop circuit, and the stop circuit is intermittently communicated with the electric heating tube 34;
at the beginning: the pressure seat 35 is positioned at the lower layer of the upper section of the expansion cavity 311;
after liquid injection: the pressure seat 35 is located at an upper layer of the upper section of the expansion chamber 311.
After water injection is finished, compressed gas is contained in the thermal expansion air bag 33, under the action of buoyancy, the dead weight of the pressure seat 35 is overcome, the pressure seat 35 is driven to move upwards until the topmost end of the pressure seat moves upwards, the thermal expansion air bag 33 expands along with heating, because the upper end of the pressure seat is limited, the pressure plate 323 outputs displacement downwards, the top plate 323 drives the magnetic column 321 to move downwards through the guide rod 324, the induction coil 322 performs cutting magnetic induction line movement, the heating quality of the electric heating tube 34 is detected, raw material water in the warming chamber 11 is heated in a partition mode through the slope surface 111, due to different heights, the electric heating tube 34 at the topmost end of the slope surface 111 is evaporated firstly, the instantaneous expansion amount of the adjacent thermal expansion air bag 33 is increased, when the instantaneous expansion amount is overlarge, the cutoff coil 325 performs cutting magnetic induction line movement in the outer magnetic field of the magnetic column 321, cutoff current is generated on the cutoff coil 325, and the cutoff current controls the adjacent electric heating tube 34 to stop heating, so that overheating deformation is prevented.
Further, the outer ring of the guide rod 324 is hermetically connected with the communicating inlet of the expansion cavity 311 and the regulating groove 312, and the stop coil 325 is positioned on the lower side of the induction coil 322;
during adjustment: the sliding stroke of the magnetic pole 321 is within the length range of the induction coil 322;
when the time is cut off: the sliding stroke of the magnetic pole 321 is within the length range of the stop coil 325.
When the heating efficiency of the electric heating tube 34 is adjusted, the magnetic pillar 321 moves in the induction coil 322, and when the instantaneous expansion amount of the thermal expansion air bag 33 is too large, the magnetic pillar 321 goes over the induction coil 322 and enters the inner ring of the stop coil 325, and the current is generated on the stop coil 325 to control the electric heating tube 34 to stop heating.
Further, the circulating device 2 further comprises a detection assembly 22, an electromagnet 23 and an adjusting magnet 24, a water outlet channel 14 is arranged on one side of the evaporation chamber 12, the water outlet channel 14 comprises a positive flow port 141 and a lateral flow port 142, the tail ends of the positive flow port 141 and the lateral flow port 142 are intersected and communicated with the evaporation chamber 12, a detection cavity 15 is arranged on the furnace body 1, the detection cavity 15 is located at the intersection of the positive flow port 141 and the lateral flow port 142, the detection assembly 22 is located in the detection cavity 15, the detection assembly 22 comprises a discharge needle 222 and a polar plate 221, the discharge needle 222 and the polar plate 221 are respectively electrically connected with the positive electrode and the negative electrode of a power supply, the discharge needle 222 and the polar plate 221 are symmetrically arranged, the discharge needle 222, the polar plate 221 and the power supply form a detection circuit, the adjusting magnet 24 is rotatably connected with the inlet end of the positive flow port 141, the lateral flow port 142 is provided with a switching groove 16, and the electromagnet 23 is arranged in the switching groove 16.
The water content of the water vapor at the water outlet channel 14 is detected in real time through the detection assembly 22, the water vapor with the too high water content is prevented from entering a subsequent use environment and affecting the energy conversion efficiency, the water outlet channel 14 is arranged in a shunting manner, the discharge needle 222, the pole plate 221 and a power supply form a detection circuit, the discharge needle 222 and the pole plate 221 are respectively arranged in the detection cavity 15, the discharge needle 222 faces the pole plate 221, and when the water content of the water vapor is lower than a rated value, the air flow is discharged through the positive flow port 141 and enters a subsequent stroke for energy conversion; when the water content in the water vapor is overlarge, the conductivity is increased, the instantaneous current value of the detection circuit is increased, and when the instantaneous current value is larger than a rated value, the adjusting magnet 24 is rotated to enable the adjusting magnet 24 to plug the positive flow port 141, the air flow with overlarge water content is discharged through the side flow port 142, and gas-liquid separation is needed when the air flow with overlarge water content is prevented from being discharged.
Furthermore, the electromagnet 23 is electrically connected with the detection circuit, the switching groove 16 is arranged in an arc shape, the end part of the adjusting magnet 24 is arranged in an arc shape, the adjusting magnet 24 is in sliding connection with the switching groove 16, and the opposite ends of the adjusting magnet 24 and the electromagnet 23 are magnetic poles with the same name. The regulating magnet 24 is guided by the arc-shaped arrangement of the switching groove 16, when the current of the detection circuit is smaller than the rated value, the regulating magnet 24 swings in the switching groove 16, and when the instantaneous current is larger than the rated value, under the action of the magnetic pole repulsive force, the regulating magnet 24 rotates upwards, and the positive current port 141 is blocked.
Preferably, the outlet end of the side flow port 142 is provided with a circulating water pipe 25, and the circulating water pipe 25 is in pipeline communication with the circulating water tank 21. The air flow having a large water content is discharged through the circulation water pipe 25 through the side flow port 142, and is conveyed into the circulation water tank 21, thereby facilitating water circulation.
Preferably, the outlet end of the circulating water pipe 25 is arranged below the liquid level of the circulating water tank 21. The outlet of the circulating water pipe 25 is buried under the liquid level, so that high-temperature water-containing airflow enters the circulating water tank 21 to preheat circulating water in the circulating water tank 21, and when water needs to be supplemented, the preheated circulating water is directly sent into the heating chamber 11 through the water supplementing pipe 26 to be heated and evaporated, and the evaporation efficiency of raw material water is improved.
The working principle of the invention is as follows: the raw material water in the warming chamber 11 is heated through the electric heating pipe 34, part of the heated raw material water is evaporated and accumulated above the warming chamber 11, the pressure in the warming chamber 11 is increased, water in the warming chamber 11 is jetted to the evaporation chamber 12 along the flow guide channel 13 along with the increase of the pressure in the warming chamber 11, the diameter of the shrinkage hole 131 is gradually reduced, the flow speed is maximum along with the reduction of the diameter, the flow speed is maximum when the gas reaches the throat part 132, the pressure is minimum, the gas enters the raw material water in the throat part 132 through the air channel 134 to form a gas core, the pressure of the peripheral water body is reduced along with the upward movement of the gas core, the gas core is gradually expanded to form bubbles, when the gas core moves to a gas-liquid interface, the pressure is minimum, the bubbles are crushed, the bubbles vibrate to the peripheral water body when the bubbles are crushed, under the action of vibration and crushing, part of the bubbles are crushed to form water mist which are dispersed in the water vapor, and the water mist particles are gasified into the water vapor along with the continuous upward floating and accumulation of heat, so that the water vapor is converted into the water vapor, and the efficiency is improved; the water body is heated by the electric heating tubes 34, so that the temperature of the water body is uniformly raised, the temperature rise of each regulating circuit is kept consistent, and the heating power is reduced by controlling the adjacent electric heating tubes 34 through the overrun current; after the water injection is finished, the thermal expansion air bag 33 expands along with the heating, because the upper end is limited, the displacement is output downwards through the top plate 323, the heating quality of the electric heating tubes 34 is detected, raw material water in the warming chamber 11 is heated in a subarea mode through the slope 111, because of different heights, the uppermost electric heating tube 34 of the slope 111 is evaporated firstly, and when the instantaneous expansion amount is overlarge, the adjacent electric heating tubes 34 are controlled to stop heating through stopping current, so that the overheating deformation is prevented; when the water content in the water vapor is lower than a rated value, the airflow is discharged through the positive flow port 141 and enters a subsequent stroke for transduction; when the water content in the water vapor is too large, the conductivity is increased, the instantaneous current value of the detection circuit is increased, and when the instantaneous current value is larger than a rated value, the adjusting magnet 24 is rotated to plug the positive flow port 141 by the adjusting magnet 24, so that the air flow with the too large water content is discharged through the side flow port 142, and gas-liquid separation is needed when the air flow with the too large water content is prevented from being discharged.
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.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. 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 (9)
1. A prevent multiloop water circulating steam boiler of local overheat deformation which characterized in that: water circulating steam boiler includes furnace body (1), circulating device (2), rising temperature device (3) and inlet tube (4), furnace body (1) and circulating device (2) pipeline intercommunication, rising temperature device (3) and furnace body (1) are connected, inlet tube (4) and furnace body (1) pipeline intercommunication, be equipped with heating chamber (11) on furnace body (1), rising temperature device (3) include a plurality of electrothermal tube (34), and are a plurality of electrothermal tube (34) heating end inserts in heating chamber (11) in proper order, inlet tube (4) and heating chamber (11) pipeline intercommunication.
2. A local thermal deformation prevention multiple-circuit water-circulating steam boiler in accordance with claim 1, wherein: the heating furnace is characterized in that an evaporation chamber (12) is arranged on the furnace body (1), the heating chamber (11) and the evaporation chamber (12) are communicated through a flow guide channel (13), the flow guide channel (13) is sequentially provided with a shrinkage cavity (131), a throat part (132) and a hole expansion (133) along the water flow direction, the diameter of the shrinkage cavity (131) is progressively reduced along the upward moving direction, the diameter of the hole expansion (133) is progressively increased along the upward moving direction, an air passage (134) is arranged on one side of the throat part (132), the throat part (132) is communicated with the air passage (134), one end of the throat part (132), which is far away from the air passage (134), is communicated with the upper layer of the evaporation chamber (12), the circulating device (2) comprises a circulating water tank (21), the circulating water tank (21) is communicated with pipelines of the furnace body (1), a water replenishing pipe (26) is arranged at the water outlet end of the circulating water tank (21), the water replenishing pipe (26) is communicated with the heating chamber (11) through a pipeline, the heating device (3) further comprises a plurality of adjusting components (32), the number of the adjusting components (32) and the floating seats (31) which are arranged in the adaptive seats (31), and the floating seats (112) are connected with the floating seats (31) and floating seats (31) which are arranged on the floating seats (311), inflation chamber (311) and floating groove (112) intercommunication, inflation chamber (311) downside is equipped with adjustment tank (312), adjusting part (32) are including magnetic column (321), induction coil (322) and roof (323), roof (323) upside is equipped with thermal expansion gasbag (33), outward extension is equipped with the heat transfer board on thermal expansion gasbag (33), the heat transfer board inserts in the liquid in adjustment tank (312), induction coil (322) are arranged in adjustment tank (312), inflation chamber (311) and adjustment tank (312) intercommunication, thermal expansion gasbag (33) are connected through roof (323) and magnetic column (321) transmission, magnetic column (321) central line and induction coil (322) central line collineation arrange, magnetic column (321) and induction coil (322) constitute regulating circuit, electrothermal tube (34) and adjacent regulating circuit electricity link.
3. A local thermal deformation prevention multiple-circuit water-circulating steam boiler in accordance with claim 2, wherein: the inlet of the shrinkage cavity (131) is positioned below the liquid level in the temperature rising chamber (11), and a slope surface (111) is arranged at the bottom of the temperature rising chamber (11).
4. A local overheating deformation prevention multiple circuit water circulation type steam boiler according to claim 3, wherein: the adjusting assembly (32) further comprises a guide rod (324) and a stop coil (325), the top plate (323) is in transmission connection with the magnetic column (321) through the guide rod (324), the stop coil (325) is located at the lower end of the adjusting groove (312), a pressing seat (35) is arranged at the upper end of the thermal expansion air bag (33), the pressing seat (35) is in sliding connection with the expansion cavity (311), the expansion cavity (311) is in stepped arrangement, the stop coil (325) and the magnetic column (321) form a stop circuit, and the stop circuit is intermittently communicated with the electric heating tube (34);
at the beginning: the pressure seat (35) is positioned at the lower layer of the upper section of the expansion cavity (311);
after liquid injection: the pressure seat (35) is positioned on the upper layer of the upper section of the expansion cavity (311).
5. A local overheating deformation prevention multi-loop water circulation type steam boiler according to claim 4, wherein: the outer ring of the guide rod (324) is hermetically connected with a communicating inlet of the expansion cavity (311) and the regulating groove (312), and the stop coil (325) is positioned at the lower side of the induction coil (322);
during adjustment: the sliding stroke of the magnetic column (321) is within the length range of the induction coil (322);
at the time of cutoff: the sliding stroke of the magnetic column (321) is positioned in the length range of the stop coil (325).
6. A local overheating deformation prevention multiple circuit water circulation type steam boiler according to claim 5, wherein: circulating device (2) still includes detection module (22), electro-magnet (23) and adjusting magnet (24), evaporation chamber (12) one side is equipped with water outlet channel (14), water outlet channel (14) are including positive flow mouth (141) and side flow mouth (142), positive flow mouth (141) and side flow mouth (142) end intersection communicate with evaporation chamber (12), be equipped with on furnace body (1) and detect chamber (15), it is located the intersection of positive flow mouth (141) and side flow mouth (142) to detect chamber (15), detection module (22) are located and detect chamber (15), and detection module (22) are including discharge needle (222) and polar plate (221), discharge needle (222) and polar plate (221) are connected with the positive negative pole electricity of power respectively, and discharge needle (222) and polar plate (221) symmetrical arrangement, and discharge needle (222), polar plate (221) and power constitute detection circuitry, adjusting magnet (24) and the rotation of positive flow mouth (141) are connected, side flow mouth (142) are equipped with and switch over entrance point (16), switch over in the interior electro-magnet (16).
7. A local thermal deformation prevention multiple-circuit water-circulating steam boiler according to claim 6, wherein: electro-magnet (23) and detection circuitry electricity link, switching groove (16) arc sets up, regulation magnet (24) tip arc sets up, adjusts magnet (24) and switching groove (16) sliding connection, and regulation magnet (24) and electro-magnet (23) are the same name magnetic pole in opposite directions.
8. A local overheating deformation prevention multiple circuit water circulation type steam boiler according to claim 7, wherein: the outlet end of the side flow port (142) is provided with a circulating water pipe (25), and the circulating water pipe (25) is communicated with a circulating water tank (21) through a pipeline.
9. A local thermal deformation prevention multiple-circuit water-circulating steam boiler in accordance with claim 8, wherein: the outlet end of the circulating water pipe (25) is arranged below the liquid level of the circulating water tank (21).
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| CN115264475B (en) | 2023-05-16 |
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