ES2396648A1 - Water preheating device in combustión boilers. (Machine-translation by Google Translate, not legally binding) - Google Patents

Water preheating device in combustión boilers. (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES2396648A1
ES2396648A1 ES201100390A ES201100390A ES2396648A1 ES 2396648 A1 ES2396648 A1 ES 2396648A1 ES 201100390 A ES201100390 A ES 201100390A ES 201100390 A ES201100390 A ES 201100390A ES 2396648 A1 ES2396648 A1 ES 2396648A1
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ES
Spain
Prior art keywords
water
preheating device
combustión
heat exchanger
thermal transfer
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES201100390A
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Spanish (es)
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ES2396648B1 (en
Inventor
Rogerio BERNARDO ROSA
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Individual
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Individual
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Priority to ES201100390A priority Critical patent/ES2396648B1/en
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Expired - Fee Related legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/16—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways
    • F22D1/18—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and heated indirectly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1669—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Device for preheating water in combustión boilers. The water preheating device is composed of an airtight container (1) with a central hole (13), a parallel tube heat exchanger (2) or a spiral exchanger (4) and a lid (3). The airtight container (1) has a treatment against corrosión in the central hole (13) and a tube for the exit of the acids (14) resulting from the cooling of the combustión gases. The device carries a thermal transfer fluid in a closed and depressurized circuit (9). The combustión gases coming from the boiler heat the inner tube of the device, which transmits the heat to the thermal transfer fluid where the heat exchanger is submerged (2 or 4). With the heat of the thermal transfer fluid, the water that passes through the interior of the heat exchanger tubes is heated, preheating the water before entering the boiler. (Machine-translation by Google Translate, not legally binding)

Description


DISPOSITIVO DE PRECALENTAMIENTO DE AGUA
WATER PRE-HEATING DEVICE

EN CALDERAS DE COMBUSTiÓN IN COMBUSTION BOILERS

OBJETO DE LA INVENCION OBJECT OF THE INVENTION

La presente invención, según se expresa en el enunciado de esta memoria descriptiva, se refiere a un dispositivo que acoplado en la salida de humos de una caldera de agua o vapor, utiliza el calor del humo para precalentar el
agua, que posteriormente al entrar en la caldera disminuye la rampa térmica, generando el mismo producto, agua caliente o vapor pero gastando menos combustible en consecuencia generando menos polución. The present invention, as expressed in the statement of this specification, refers to a device that, coupled to the flue gas outlet of a water or steam boiler, uses the heat of the smoke to preheat the
water, which subsequently enters the boiler decreases the thermal ramp, generating the same product, hot water or steam but spending less fuel consequently generating less pollution.

El dispositivo funciona a partir de un principio termodinámico al trabajar la caldera, los gases calientes pasan por el orificio central, calentando el fluido de transferencia térmica, que a su vez calienta un intercambiador de calor. The device works from a thermodynamic principle when working the boiler, the hot gases pass through the central hole, heating the thermal transfer fluid, which in turn heats a heat exchanger.

El artefacto está previsto ser totalmente independiente puede ser utilizado por cualquier caldera (convencionales o de condensación) que tenga control automático de temperatura o generadores de vapor automatizado. El circuito con fluido de transferencia térmica no se encuentra bajo presión, el único sistema con presión de trabajo es el circuito de agua. The appliance is intended to be completely independent can be used by any boiler (conventional or condensing) that has automatic temperature control or automated steam generators. The circuit with thermal transfer fluid is not under pressure, the only system with working pressure is the water circuit.

ANTECEDENTES DE LA INVENCION BACKGROUND OF THE INVENTION

Se conocen algunos dispositivos (chimeneas) por los que discurren los gases calientes provenientes de la caldera de combustión y se lanzan a la atmósfera, la utilización se limita a eliminar los gases para evitar intoxicaciones y tener tratamiento para r~sistir la corrosión. En una caldera domestica convencional los gases salen a una temperatura media de 140°, en una caldera de condensación salen a una media de 60° y en una caldera industrial de generación de vapor sale a una media de 250°, es decir gran parte del calor generado no es aprovechado, los sistemas de ahorro energético existentes en cálderas domesticas tienen como principales dificultades la corrosión del circuito de agua por los ácidos resultantes del enfriamiento pues están en contacto directo con el mismo y las dimensiones de la caldera que por contener mas dispositivos es mayor que las antiguas y se torna difícil cambiarlas pues las antiguas ya tiene su lugar apropiado y acoplado en casa. Some devices (chimneys) through which hot gases from the combustion boiler run and are released into the atmosphere are known, the use is limited to eliminating gases to avoid poisoning and having treatment to resist corrosion. In a conventional domestic boiler the gases leave at an average temperature of 140 °, in a condensing boiler they leave at an average of 60 ° and in an industrial steam boiler it leaves at an average of 250 °, that is to say much of the Heat generated is not used, the energy saving systems existing in domestic boilers have as main difficulties the corrosion of the water circuit by the acids resulting from the cooling because they are in direct contact with it and the dimensions of the boiler that contain more devices It is older than the old ones and it becomes difficult to change them because the old ones already have their proper place and docked at home.

DESCRIPCION DE LA INVENCION DESCRIPTION OF THE INVENTION

El dispositivo de la invención presenta un recipiente metálico hermético con un orificio hueco pasante por donde discurren los gases calientes, con una brida de sujeción en uno de los extremos que va sujeto a la salida de humos de la The device of the invention has an airtight metal container with a through hole through which hot gases run, with a flange clamping on one of the ends that is subject to the smoke outlet of the

caldera y un suporte para tubo de escape en el otro. En el interior un intercambiador de calor por donde pasa el agua para ser calentada constituido de colector de entrada, tubo y colector de salida, los tubos en paralelo o una espiral de tubo de acuerdo con las presiones y caudal exigidos, el intercambiador de calor estará sumergido en fluido de transferencia térmica, para amortiguar la subida de temperatura, mantenerla constante y tener un Efecto memoria. El fluido de transferencia térmica se calentaría en el centro del aparato y por convección calentando todo el circuito interno. Para complementar la descripción que seguidamente se va a realizar y con objeto de ayudar a una mejor comprensión de las características del invento, se acompaña a la presente memoria descriptiva de un juego de planos con cuyas figuras se comprenderán más fácilmente las innovaciones y ventajas del dispositivo objeto de la invención, la cual tiene carácter de ejemplo meramente ilustrativo y no limitativo. boiler and a support for exhaust pipe in the other. Inside a heat exchanger through which the water passes to be heated constituted by inlet manifold, tube and outlet manifold, parallel tubes or a spiral tube according to the required pressures and flow, the heat exchanger will be submerged in thermal transfer fluid, to dampen the temperature rise, keep it constant and have a memory effect. The thermal transfer fluid would be heated in the center of the apparatus and by convection by heating the entire internal circuit. In order to complement the description that is going to be carried out below and in order to help a better understanding of the characteristics of the invention, the present descriptive report of a set of drawings is attached, whose figures will more easily understand the innovations and advantages of the device object of the invention, which is merely illustrative and not limiting.

BREVE DESCRIPCION DE LOS DIBUJOS BRIEF DESCRIPTION OF THE DRAWINGS

Figura 1.-Muestra una vista en perspectiva explosionada de las cuatro piezas que constituye el dispositivo de precalentamiento objeto de la invención. Figure 1.- Shows an exploded perspective view of the four parts that constitute the preheating device object of the invention.

Figura 2.-Muestra una sección del dispositivo formado por todas las piezas acopladas entre sí con un corte en diagonal para mejor comprensión Figure 2.- It shows a section of the device formed by all the pieces coupled to each other with a diagonal cut for better understanding

Figura 3.-Muestra las piezas antes del ensamblaje del intercambiador de calor de tubos paralelos (figura 1.2). Figure 3.- Shows the parts before the assembly of the parallel tube heat exchanger (figure 1.2).

Figura 4.-Muestra el recipiente metálico (figura 1.1) con destaque para la cámara de fluido térmico. Figure 4.- Shows the metal container (figure 1.1) with highlight for the thermal fluid chamber.

DESCRIPCION DE UNA FORMA DE REALlZACION PREFERIDA DESCRIPTION OF A PREFERRED FORM OF REALIZATION

A la vista de las comentadas figuras, puede observarse como el dispositivo se constituye mediante cuatro piezas. In view of the aforementioned figures, it can be seen how the device is constituted by four pieces.

En la figura 1 aparece con el número 1 el recipiente metálico hermético con orificio central, lleno del fluido de transferencia térmica. El elemento número 2 es el intercambiador de calor de tubos paralelos compuesto de un conjunto soldado de colector de entrada, tubo y colector de salida y dos tapas cerradas por tornillos. El elemento 4 representa un intercambiador de calor en forma de espiral hecho con tubo. El elemento 3 es la tapa del cilindro hermético que va sujeta por tornillos. El elemento 6 es la entrada de agua fría y el elemento 5 es la salida de agua caliente. In figure 1, the hermetic metal container with a central hole, filled with the thermal transfer fluid, appears with the number 1. Element number 2 is the parallel tube heat exchanger composed of a welded set of inlet manifold, tube and outlet manifold and two screw-closed caps. Element 4 represents a spiral heat exchanger made with a tube. Element 3 is the cover of the sealed cylinder that is fastened by screws. Element 6 is the cold water inlet and element 5 is the hot water outlet.

En la figura 2 tenemos el dispositivo de precalentamiento con un corte lateral, siendo 2 el intercambiador de calor o el circuito de agua, 9 espacio con fluido de transferencia térmica, 7 entrada de gases calientes y 8 salida de gases. In figure 2 we have the preheating device with a lateral cut, 2 being the heat exchanger or the water circuit, 9 space with thermal transfer fluid, 7 hot gas inlet and 8 gas outlet.

En la figura 3 tendremos el intercambiador de tubos paralelos fabricado en In figure 3 we will have the parallel tube exchanger manufactured in

5 acero inoxidable sanitario emergido en fluido de transferencia térmica de modo que se calentaría y no tendría contacto directo con los ácidos resultantes del enfriamiento de los gases, compuesto de colector de entrada figura con el número16 por donde el agua fría entra en el sistema, tubos con el número 11, colector de salida número 10 Y tapa número 3. 5 sanitary stainless steel emerged in thermal transfer fluid so that it would be heated and would not have direct contact with the acids resulting from the cooling of the gases, composed of inlet manifold contained with the number 16 through which cold water enters the system, tubes with number 11, outlet manifold number 10 and lid number 3.

10 En la figura 4 tendremos el sistema con un corte donde se puede observar el orificio central con el número 13, calentando el tubo interior del aparato en consecuencia calentando el fluido de transferencia térmica localizado en el espacio representado por el número 9,calentando de forma gradual los tubos del circuito de agua 11 y tubo para salida de los ácidos resultantes del 10 In Figure 4 we will have the system with a cut where the central hole with the number 13 can be observed, heating the inner tube of the apparatus accordingly heating the thermal transfer fluid located in the space represented by the number 9, heating so Gradually the tubes of the water circuit 11 and tube for the exit of the acids resulting from the

15 enfriamiento de los gases de combustión, elemento número 14. 15 flue gas cooling, item number 14.

Claims (4)

REIVINDICACIONES 1. Dispositivo de precalentamiento de agua, caracterizado por el 1. Water preheating device, characterized by the 5 hecho de estar compuesto de recipiente hermético (1) con orificio central (13), intercambiador de calor de tubo paralelo (2) o intercambiador espiral (4) y tapa (3). 5 made of a sealed container (1) with central hole (13), parallel tube heat exchanger (2) or spiral exchanger (4) and lid (3). 2. Dispositivo de precalentamiento de agua, según la reivindicación 1, caracterizado por el hecho de estar compuesto de recipiente 2. Water preheating device according to claim 1, characterized in that it is composed of a container 10 hermético (1) con tratamiento contra corrosión en el orificio central (13) y tubo para salida de los ácidos resultantes del enfriamiento de los gases de combustión (14). Tightly sealed (1) with corrosion treatment in the central hole (13) and tube for exiting the acids resulting from the cooling of the flue gases (14). 3. Dispositivo de precalentamiento de agua, según la reivindicación 1, caracterizado por el hecho de llevar fluido de transferencia térmica en 3. Water preheating device according to claim 1, characterized in that it carries thermal transfer fluid in 15 un circuito cerrado, despresurizado (9), que funcionan como estabilizador, amortiguador y reserva de calor. 15 a closed, depressurized circuit (9), which functions as a stabilizer, buffer and heat reserve. 4. Dispositivo de precalentamiento de agua, según la reivindicación 1, caracterizado por el hecho de estar compuesto de intercambiador de calor de tubos paralelos (2) o intercambiador espiral (4), hecho en acero 4. Water preheating device according to claim 1, characterized in that it is composed of parallel tube heat exchanger (2) or spiral exchanger (4), made of steel 20 inoxidable sanitario. 20 stainless sanitary. Figura 1  Figure 1   FIGURA 2 FIGURE 2 2 2 FIGURA 3 FIGURE 3 FIGURA 4 FIGURE 4 ~ ~ O OR
ES201100390A 2010-11-12 2010-11-12 WATER PRE-HEATING DEVICE IN COMBUSTION BOILERS. Expired - Fee Related ES2396648B1 (en)

Priority Applications (1)

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ES201100390A ES2396648B1 (en) 2010-11-12 2010-11-12 WATER PRE-HEATING DEVICE IN COMBUSTION BOILERS.

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ES201100390A ES2396648B1 (en) 2010-11-12 2010-11-12 WATER PRE-HEATING DEVICE IN COMBUSTION BOILERS.

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ES2396648B1 ES2396648B1 (en) 2014-01-20

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855903A (en) * 1955-10-25 1958-10-14 Foster Wheeler Corp Fluid heater
JPS58182084A (en) * 1982-04-16 1983-10-24 Matsushita Electric Ind Co Ltd Heat exchanger
US4660632A (en) * 1984-08-30 1987-04-28 Ga Technologies Inc. Heat exchanger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855903A (en) * 1955-10-25 1958-10-14 Foster Wheeler Corp Fluid heater
JPS58182084A (en) * 1982-04-16 1983-10-24 Matsushita Electric Ind Co Ltd Heat exchanger
US4660632A (en) * 1984-08-30 1987-04-28 Ga Technologies Inc. Heat exchanger

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ES2396648B1 (en) 2014-01-20

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