Steam generator heating system
Technical Field
The invention relates to the related field of steam generators, in particular to a heating system of a steam generator.
Background
Steam generators are mechanical devices that utilize the thermal energy of fuel or other energy sources to heat water into hot water or steam. The existing steam generator utilizes fuel combustion to provide heating, so that water in the steam generator is heated and boiled to form steam, the steam is heated at the bottom of the water cavity, heat generated by combustion is in contact with the bottom of the water cavity to perform heat exchange, and the heat is transferred into the water cavity. The heat inside the water cavity is gradually diffused upwards from the bottom after being heated, especially in the process of heating cold water, the heat absorption of combustion is gradually reduced, the heat absorption is unfavorable, and the rapid generation of water vapor is also unfavorable, so that the existing heating system needs to be improved.
Disclosure of Invention
The present invention is directed to a steam generator heating system, which solves the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The steam generator heating system comprises a combustion bin which is arranged at the lower part in a water cavity, wherein the combustion bin is horizontally arranged and penetrates through two ends of the water cavity, the combustion bin is not communicated with the inside of the water cavity, fuel is filled in the combustion bin, generated heat is combusted in the combustion bin and is diffused into water in the water cavity through the side wall of the combustion bin, and the combustion bin is submerged in the water cavity, so that heat generated in the combustion bin exchanges heat in the water, and the contact with cold water is greatly improved; the water cavity is communicated with the water inlet pipe, cold water is introduced into the water cavity, the top of the water cavity is communicated with the steam exhaust cylinder, and generated steam is exhausted from the steam exhaust cylinder; the top of the combustion bin is fixedly provided with a plurality of vertical heating cavities, the lower ends of the heating cavities are connected with the combustion bin, flames generated by combustion can enter the heating cavities, the upper ends of the heating cavities are arranged in a sealing manner, a plurality of vertical upward spray pipes penetrate out from the top ends of the heating cavities, the top ends of the spray pipes are higher than the liquid level in the heating cavities, water is sprayed out from the upper part of the water surface and falls down, the lower ends of the spray pipes in each heating cavity are communicated in the same shunt pipe, water in the shunt pipe simultaneously enters different spray pipes, and the water in the spray pipes is sprayed out from the top ends; the water in the main circulating pipe is sent into all the branch pipes, the main circulating pipe extends out from the water cavity, the outer end of the main circulating pipe is communicated with the discharge pipe, the discharge pipe is communicated with the circulating pump, and the water discharged by the circulating pump is sent into the branch pipes after passing through the discharge pipe and the main circulating pipe in sequence; the water inlet of the circulating pump is communicated with the communicating pipe, the communicating pipe extends into the bottom of the water cavity, the end part of the communicating pipe is communicated with the liquid suction pipe at the bottom of the water cavity, the liquid suction pipe is communicated with the water cavity, the circulating pump sucks water in the water cavity into the liquid suction pipe, the circulating pump drives water in the water cavity to circularly flow, the heated water at the bottom is pumped and fed to the upper part, and the heated water is sprayed upwards through the spraying pipe to be in contact with the upper part of the liquid level, water mist can be formed, water mist generation is facilitated, water around the combustion bin flows quickly, heat on the combustion bin is conveniently absorbed, and the water heater is suitable for quick heating during heating.
Further: the heating cavity and the combustion bin are of an integrated structure.
Further: a plurality of expansion structures are arranged on the inner side wall of the water cavity, branch pipes are communicated with the discharge pipes in the expansion structures, and the volume of internal water flow is changed through expansion and contraction of the expansion structures, so that water flows, heat absorbed by contact with the combustion bin is diffused outwards, and the heat absorbing effect is improved.
Further: the expansion structure comprises a telescopic air bag body, wherein the air bag body is internally communicated with a branch pipe, one end of the air bag body is fixed on the inner wall of a water cavity, a connecting plate is fixedly installed on the other end of the air bag body, a plurality of return springs are fixedly installed on the edge of the connecting plate, the return springs are fixedly connected with the inner wall of the water cavity, the air bag body is kept in a contracted state through the return springs, the return springs are stretched after the air bag body is inflated by introducing water into the air bag body, the air bag body is contracted under the action of the return springs after internal water pressure is reduced, the internal water is discharged, the expansion of the air bag body is realized, and the size of the inside of the whole expansion structure is changed.
Further: the main circulation pipe is provided with an electromagnetic valve which is electrically connected with the controller, and the electromagnetic valve is controlled to be opened and closed by the controller to control the water to be discharged.
Further: the outer side wall of the steam exhaust cylinder is covered with a circle of heat preservation cover, so that the temperature in the steam exhaust cylinder is kept high, water vapor is prevented from being discharged into the steam exhaust cylinder and condensed into water drops when meeting condensation, and the conveying of the water vapor is ensured.
Further: a heat-preserving heating pipe is coiled in the heat-preserving cover, the lower end of the heat-preserving heating pipe is communicated with a flue gas pipe, hot flue gas is introduced into the heat-preserving heating pipe, and heat is diffused into the steam exhaust cylinder; the lower extreme intercommunication of flue gas pipe is fixed in the flue gas incasement on the water cavity, communicates the flue gas runner in the flue gas incasement, and the flue gas runner downwardly extending to the lower part of water cavity communicates with the combustion chamber in, and in the flue gas that produces in the combustion chamber enters into the flue gas runner, upwards along the flue gas runner and enters into the flue gas case.
Further: the top end of the heat preservation heating pipe is communicated with the smoke exhaust pipe, and smoke is exhausted from the smoke exhaust pipe for subsequent smoke treatment.
Further: a filter screen can be arranged in the flue gas box to filter soot in the flue gas box, so that the discharge of pollutants is reduced.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the heating bin is arranged in the middle of the water cavity, heat generated by combustion is diffused into the water cavity through the combustion bin, the heat exchange area is increased, and the heat absorption effect is improved; the circulating water arranged in the heating cavity is used for pumping water with heat absorbed by the bottom, heating the water in the heating cavity and then spraying the water upwards, so that the heat is quickly diffused into the water surface above the water when the temperature is raised, and on the other hand, the sprayed water is convenient for forming water vapor, so that the water vapor is quickly generated, and the efficiency is improved; the expansion structure can be intermittently opened and closed, so that on one hand, water in the water cavity flows and exchanges heat with the combustion bin, and on the other hand, the expansion structure increases the water flow height sprayed by the spray pipe when internal water is discharged, the formation of water vapor is further enhanced, the heating system improves the generation of the water vapor, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic perspective view of a heating system of a steam generator.
Fig. 2 is a schematic view of an internal structure of a heating system of a steam generator.
Fig. 3 is an enlarged schematic view of the structure of fig. 2 a.
Fig. 4 is a schematic diagram of an expansion structure in a heating system of a steam generator.
In the figure: the device comprises a water cavity, a 2-combustion bin, a 3-exhaust drum, a 4-flue gas flow channel, a 5-exhaust pipe, a 6-flue gas box, a 7-heating cavity, an 8-spray pipe, a 9-circulating pump, a 10-liquid suction pipe, an 11-communicating pipe, a 12-discharge pipe, a 13-main circulating pipe, a 14-shunt pipe, a 15-electromagnetic valve, a 16-controller, a 17-branch pipe, an 18-expansion structure, a 19-air bag body, a 20-connecting plate, a 21-reset spring, a 22-flue gas pipe, a 23-heat preservation cover, a 24-heat preservation heating pipe and a 25-water inlet pipe.
Detailed Description
Referring to the figure, in the embodiment of the invention, a heating system of a steam generator comprises a combustion chamber 2 arranged at the lower part in a water cavity 1, wherein the combustion chamber 2 is horizontally arranged and penetrates through two ends of the water cavity 1, the combustion chamber 2 is not communicated with the inside of the water cavity 1, fuel is filled in the combustion chamber 2, generated heat is combusted in the combustion chamber 2 and is diffused into water in the water cavity 1 through the side wall of the combustion chamber 2, and the combustion chamber 2 is submerged by water in the water cavity 1, so that heat generated in the combustion chamber 2 exchanges heat in the water, and the contact with cold water is greatly improved; the water cavity 1 is communicated with the water inlet pipe 25, cold water is introduced into the water cavity 1, the top of the water cavity 1 is communicated with the steam exhaust cylinder 3, and generated steam is discharged from the steam exhaust cylinder 3.
A plurality of vertical heating cavities 7 are fixedly arranged on the top of the combustion bin 2, the heating cavities 7 and the combustion bin 2 are of an integrated structure, the lower ends of the heating cavities 7 are communicated with the combustion bin 2, flames generated by combustion can enter the heating cavities 7, the upper ends of the heating cavities are in sealed arrangement, a plurality of vertical upward spray pipes 8 are fixedly arranged in each heating cavity 7, the spray pipes 8 penetrate out from the top ends of the heating cavities 7 upwards, the top ends of the spray pipes 8 are higher, the height of the spray pipes is higher than the liquid level in the interior, water falls after being sprayed out from the upper part of the water surface, the lower ends of the spray pipes 8 in each heating cavity 7 are communicated in the same shunt pipe 14, the water in the shunt pipe 14 enters different spray pipes 8 at the same time, and the water in the spray pipes 8 is sprayed out from the top ends; the plurality of the shunt tubes 14 are communicated in the same main circulation tube 13, water in the main circulation tube 13 is fed into all the shunt tubes 14, the main circulation tube 13 extends out of the water cavity 1, the outer end of the main circulation tube 13 is communicated with the discharge tube 12, the discharge tube 12 is communicated with the circulating pump 9, and water discharged by the circulating pump 9 is fed into the shunt tubes 14 after passing through the discharge tube 12 and the main circulation tube 13 in sequence; the water inlet of the circulating pump 9 is communicated with the communicating pipe 11, the communicating pipe 11 stretches into the bottom of the water cavity 1, and the end part of the communicating pipe 11 is communicated with the liquid suction pipe 10 positioned at the bottom of the water cavity 1, the liquid suction pipe 10 is communicated with the water cavity 1, the circulating pump 9 sucks water in the water cavity 1 into the liquid suction pipe 10, the circulating pump 9 drives the water inside to circularly flow, the heated water at the bottom is pumped and fed to the upper part, and is sprayed upwards through the spraying pipe 8 to be in contact with the upper part of the liquid level, water mist can be formed, the generation of water mist is facilitated, the water around the combustion bin 2 flows fast, the heat on the combustion bin 2 is conveniently absorbed, and the water heater is suitable for fast heating during temperature rising.
In order to enable internal water to flow rapidly and diffuse heat, a plurality of expansion structures 18 are arranged on the inner side wall of the water cavity 1, branch pipes 17 are connected in the expansion structures 18, the branch pipes 17 are communicated with the discharge pipes 12, the volume of internal water flow is changed through expansion and contraction of the expansion structures 18, so that the water flows, the heat absorbed by contact with the combustion chamber 2 is diffused outwards, and the heat absorption effect is improved, the expansion structures 18 comprise telescopic air bag bodies 19, the interiors of the air bag bodies 19 are communicated with the branch pipes 17, one ends of the air bag bodies 19 are fixed on the inner wall of the water cavity 1, connecting plates 20 are fixedly arranged at the other ends, a plurality of return springs 21 are fixedly arranged on the edges of the connecting plates 20, the return springs 21 are fixedly connected with the inner wall of the water cavity 1, the air bag bodies 19 are kept in a contracted state through the return springs 21, the return springs 21 are stretched after the interiors are inflated by introducing water, the air bag bodies 19 are contracted under the action of the return springs 21 after the internal water pressure is reduced, the internal water is discharged, the expansion of the air bag bodies 19 are realized, and the volume of the whole expansion structures 18 are changed; the main circulation pipe 13 is provided with a solenoid valve 15, the solenoid valve 15 is electrically connected with a controller 16, and the solenoid valve 15 is controlled to be opened and closed by the controller 16 to control the water discharge.
The outer side wall of the steam exhaust cylinder 3 is covered with a circle of heat preservation cover 23, so that the temperature in the steam exhaust cylinder 3 is kept high, water vapor is prevented from being discharged into the steam exhaust cylinder 3 and condensed into water drops when meeting cold, and the conveying of the water vapor is ensured. A heat-preserving heating pipe 24 is coiled in the heat-preserving cover 23, the lower end of the heat-preserving heating pipe 24 is communicated with a smoke pipe 22, hot smoke is introduced into the heat-preserving heating pipe 24, and heat is diffused into the steam exhaust cylinder 3; the top end of the heat preservation heating pipe 24 is communicated with the smoke exhaust pipe 5, and smoke is exhausted from the smoke exhaust pipe 5 for subsequent smoke treatment; the lower extreme intercommunication of flue gas pipe 22 is fixed in the flue gas case 6 on water cavity 1, and flue gas case 6 in-connection flue gas runner 4, flue gas runner 4 downwardly extending to the lower part of water cavity 1 communicates with combustion chamber 2, and in flue gas that combustion chamber 2 combustion produced enters into flue gas runner 4, upwards enters into flue gas case 6 along flue gas runner 4, can set up the filter screen in flue gas case 6, filters the cigarette ash among them, reduces the discharge of pollutant.
When the water heater is used, water is fed into the water cavity 1 from the water inlet pipe 25, fuel is put into the combustion bin 2, heat generated by combustion of the fuel is in contact with water in the combustion bin 2 for heat exchange, the circulating pump 9 is started during heating and temperature rising, the heated water below the combustion bin 2 is pumped out and is fed into the main circulating pipe 13, and then is sprayed upwards through the shunt pipe 14 and the spray pipe 8, the heated water is sprayed above the water surface and is in contact with water above the water far from the combustion bin 2, heat is quickly transferred, the sprayed water is dispersed, the formation of water vapor is facilitated, and the water flowing upwards in the spray pipe 8 is contacted with the combustion bin 2 again for heating, so that the heating time is prolonged; after the main circulation pipe 13 is disconnected, water sent by the circulation pump 9 enters the expansion structure 18 to expand so as to push internal water to flow, so that heat diffusion is improved, when the main circulation pipe 13 is conducted by the electromagnetic valve 15, the expansion structure 18 contracts so as to discharge internal water from the main circulation pipe 13, and the water pressure of the main circulation pipe 13 can be increased so as to enable the spray pipe 8 to spray higher water columns.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.