Water-cooling connecting flue used from hearth to body in left and right boilers

Abstract

The utility model discloses a water-cooling connecting flue from a hearth to a boiler body in a left and right two-body boiler, which comprises a flue body arranged between the hearth and the boiler body. The flue body is composed of a circle of surrounding heat preservation layer, a membrane type water cooling wall is correspondingly arranged in the heat preservation layer, flue gas heat in the flue body is correspondingly absorbed through the membrane type water cooling wall, and refractory concrete is correspondingly poured on the membrane type water cooling wall. The flue structure of the device is correspondingly installed at the position between the hearth and the boiler body, after flue gas enters the water-cooling flue, heat exchange is conducted through the water-cooling pipe, and the temperature of the flue gas in the water-cooling flue is effectively reduced; on one hand, the internal temperature of the temperature flue can be reduced, and the thermal insulation layer and the fireproof concrete are effectively protected; in addition, heat is stored in the form of hot water, energy is saved, and double benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas steam boiler technical field, specifically speaking, a water cooling connecting flue from hearth to body in left and right two body boilers. BACKGROUND

[0002] In prior art, with the development of city modernization of our country, city air pollution is getting serious, haze weather is frequent, coal-fired boiler heat efficiency is low, energy consumption is big, SO2, NOx pollutant emission in flue gas is serious, and natural gas fuel can effectively solve the contradiction between boiler coal combustion and environmental pollution as a kind of high-quality, efficient, environmental protection type clean energy fuel;In recent years, the state energy conservation and environmental protection emission reduction policy is successively introduced, also makes gas boiler get unprecedented development, for the whole gas boiler, due to the limitation of transportation conditions, the hearth and the body are made into two modules, and the flue is connected in the middle.

[0003] As Figure 5 Shown, it is the connecting flue structure diagram of hearth and boiler body in prior art, specifically including the steel plate of outside, the heat preservation layer of inside and the casted refractory concrete;The connecting flue is higher in temperature all the year round, since long-term contact in high-temperature flue gas, first, the steel plate of outside flue cannot be effectively protected and cooled, long-term under the radiation of high-temperature flue gas, the running cycle is long, it will inevitably lead to crack of steel plate;In addition, the refractory concrete and heat preservation layer also produce the crack of refractory concrete and the performance reduction of heat preservation layer under the erosion of high-temperature flue gas all the year round, not only cause the loss of energy, but also affect the stable and safe operation of boiler.

[0004] Therefore, in order to solve the above problems, a water cooling connecting flue from hearth to body in left and right two body boilers with reasonable structure needs to be developed. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiency of prior art, provides a kind of water cooling connecting flue from hearth to body in left and right two body boilers;Its technical scheme is as follows:

[0006] A kind of water cooling connecting flue from hearth to boiler body in left and right two body boilers, including flue body, the flue body is arranged between hearth and boiler body;The flue body is formed by a circle of heat preservation layer, and the heat preservation layer is provided with membrane water cooling wall correspondingly, the flue gas heat in the flue body is absorbed by membrane water cooling wall, and the membrane water cooling wall is provided with refractory concrete correspondingly.

[0007] Further, the membrane water cooled wall comprises water cooled pipes vertically installed on the heat preservation layer, the water cooled pipes are vertically and uniformly arranged, the water cooled pipes are correspondingly embedded in the left and right side walls of the heat preservation layer, and the water inlet pipe embedded in the heat preservation layer is arranged at the lower end of the flue body, and the water outlet pipe embedded in the heat preservation layer is arranged at the lower end of the flue body.

[0008] The water inlet pipe and the water outlet pipe are both transversely arranged and connected with the water cooled pipes; the water entering the water inlet pipe enters the water cooled pipes on both sides and then enters the water outlet pipe on the upper side to realize water cooling and heat exchange.

[0009] Further, the outer sides of the water inlet pipe and the water outlet pipe are both cast with fire-resistant concrete, and the arc-shaped reinforcing parts are correspondingly arranged.

[0010] Further, the water cooled pipes are arranged at the left and right side walls of the flue body, and the upper and lower ends of the water cooled pipes are bent and extended to be vertically connected with the water inlet pipe and the water outlet pipe.

[0011] Further, the water cooled pipes on the left side and the water cooled pipes on the right side in the flue body are connected in a whole through the connecting plates correspondingly arranged between the adjacent water cooled pipes on the same side, and the whole is correspondingly embedded in the heat preservation layer and fixed through the fire-resistant concrete casting.

[0012] Further, the heat preservation layer is an aluminum silicate heat preservation layer; the aluminum silicate heat preservation layer is arranged to make the whole flue have a better heat preservation effect.

[0013] Beneficial effects: the utility model has the following beneficial effects:

[0014] 1) the flue structure of the device is correspondingly arranged at the position between the furnace and the boiler body, after the flue gas enters the water cooled flue, the heat exchange is carried out through the water cooled pipes, and the temperature of the internal flue gas is effectively reduced; on the one hand, the temperature of the flue is reduced, and the heat preservation layer and the fire-resistant concrete are effectively protected; in addition, the heat is stored in the form of hot water, and energy is saved, and two advantages are achieved at one time;

[0015] 2) the membrane water cooled wall is arranged in the device and is realized through the water cooled pipes, the water inlet pipe and the water outlet pipe in the upward and downward directions; the cold water entering the water inlet pipe is sent to the vertical water cooled pipes on both sides, the water is dispersed, heat is absorbed, and then the water is discharged through the water outlet pipe on the upper side, and the structure is reasonably arranged;

[0016] 3) whether it is the water cooled pipe or the water inlet pipe and the water outlet pipe in the device, the water cooled pipe, the water inlet pipe and the water outlet pipe are all embedded in the heat preservation layer and are fixed through the fire-resistant concrete casting, the whole structure is stable and reliable, and the safe and economic operation of the boiler is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The utility model discloses structure diagram;

[0018] Figure 2 For Figure 1 The middle A-A section view;

[0019] Figure 3 For Figure 1 The middle B enlarged view;

[0020] Figure 4 The utility model discloses corresponding installation structure diagram;

[0021] Figure 5 The prior art flue structure diagram;

[0022] Among them, flue body 1;Heat preservation layer 2;Membrane water cooling wall 3;Refractory concrete 4;Water cooling pipe 5;Water inlet pipe 6;Water outlet pipe 7. Specific embodiments

[0023] The utility model discloses further illustrate in combination with the drawings and specific embodiments, and this embodiment is implemented under the premise of the utility model technical scheme, and it should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0024] As Figure 1 , Figure 2 And Figure 3 Indicated, a left and right two body boiler for the flue of water cooling connection from hearth to boiler body, including flue body 1, this flue body 1 is set between hearth and boiler body;Flue body 1 is formed by a circle of heat preservation layer 2, and the heat preservation layer 2 is correspondingly provided with membrane water cooling wall 3, and the membrane water cooling wall 3 is correspondingly absorbed flue body 1 in the heat of flue gas, and the membrane water cooling wall 3 is correspondingly casted with refractory concrete 4.

[0025] Membrane water cooling wall 3 includes the water cooling pipe 5 vertically installed on heat preservation layer 2, and the water cooling pipe 5 is vertically and evenly arranged, and the water cooling pipe 5 is correspondingly embedded in the left and right side walls of heat preservation layer 2, and the lower end position of flue body 1 is provided with the water inlet pipe 6 embedded in heat preservation layer 2, and the lower end position of flue body 1 is provided with the water outlet pipe 7 embedded in heat preservation layer 2;

[0026] And the water inlet pipe 6 and water outlet pipe 7 are horizontally arranged and are connected with water cooling pipe 5;The water body from water inlet pipe 6 enters into the water cooling pipe 5 on both sides, and then enters into the water outlet pipe 7 on the upside from water cooling pipe 5 to realize water cooling heat exchange.

[0027] The outer side of water inlet pipe 6 and water outlet pipe 7 is casted with refractory concrete 4, and is correspondingly provided with arc reinforcing portion 8.

[0028] The water cooling pipes 5 are arranged at the left and right side walls of the flue body 1, and the upper and lower ends of the water cooling pipes 5 are bent and extended to be connected to the water inlet pipe 6 and the water outlet pipe 7 vertically.

[0029] The left water cooling pipes 5 and the right water cooling pipes 5 in the flue body 1 are connected to form a whole through the connecting plates 9, and the whole is embedded in the heat preservation layer 2 and fixed through the cast refractory concrete 4.

[0030] As shown in the figure, the flue structure of the device is arranged at the position between the furnace and the boiler body, and after the flue gas enters the water cooling flue, the heat exchange is carried out through the water cooling pipes, so that the temperature of the flue gas inside is effectively reduced. Figure 4 On the one hand, the temperature inside the flue can be reduced, and the heat preservation layer and the fireproof concrete can be effectively protected; on the other hand, the heat is stored in the form of hot water, so that the energy is saved, and two goals are achieved at one time.

[0031] In the device, the membrane water cooling wall is arranged through the water cooling pipes and the water inlet pipe and the water outlet pipe in the upward and downward directions, the water inlet pipe sends the entered cold water into the vertical water cooling pipes on both sides, the water body is dispersed, the heat is absorbed, and then the water is discharged through the water outlet pipe on the upper side, and the structure is reasonable.

[0032] In addition, in the device, the water cooling pipes, the water inlet pipe and the water outlet pipe are embedded in the heat preservation layer, and are fixed through the cast fireproof concrete, so that the whole structure is stable and reliable, and the safe and economic operation of the boiler is facilitated.

[0033] The above specific embodiment is only a preferred embodiment of the present application, and is not used to limit the implementation and the scope of claims of the present application, and any equivalent changes and modifications made according to the content of the patent protection scope of the present application should be included in the patent application scope of the present application.

Claims

1. A water-cooled connection flue from a furnace to a body in a two-body boiler, characterized in that: The flue body (1) is arranged between the hearth and the boiler body, and is composed of a surrounding heat insulation layer (2) with a membrane water cooling wall (3) arranged in the heat insulation layer (2) to absorb the heat of flue gas in the flue body (1), and the membrane water cooling wall (3) is cast with refractory concrete (4).

2. A water cooled connecting flue from the furnace to the body in a two body boiler as claimed in claim 1, characterized in that: The membrane water cooling wall (3) comprises water cooling pipes (5) vertically arranged in the heat insulation layer (2), the water cooling pipes (5) are uniformly arranged vertically and are embedded in the left and right side walls of the heat insulation layer (2), and the lower end of the flue body (1) is provided with a water inlet pipe (6) and a water outlet pipe (7) embedded in the heat insulation layer (2). The water inlet pipe (6) and the water outlet pipe (7) are both horizontally arranged and connected with the water cooling pipes (5), and the water entering the water inlet pipe (6) enters the water cooling pipes (5) on both sides and then enters the water outlet pipe (7) on the upper side to realize water cooling and heat exchange.

3. A water cooled connecting flue from the furnace to the body in a two body boiler as claimed in claim 2, characterized in that: The water inlet pipe (6) and the water outlet pipe (7) are both cast with refractory concrete (4) and are provided with arc-shaped reinforcing parts (8).

4. A water cooled connecting flue from the furnace to the body in a two body boiler as claimed in claim 2, wherein: The water cooling pipes (5) are arranged at the left and right side walls of the flue body (1), and the upper and lower ends of the water cooling pipes (5) are bent to be connected with the water inlet pipe (6) and the water outlet pipe (7) perpendicularly.

5. A water cooled connecting flue from the furnace to the body in a two body boiler as claimed in claim 3, wherein: The water cooling pipes (5) on the left side and the water cooling pipes (5) on the right side in the flue body (1) are connected by connecting plates (9) to form a whole, and the whole is embedded in the heat insulation layer (2) and is fixed by the refractory concrete (4).

6. A water cooled connecting flue from the furnace to the body in a two body boiler as claimed in claim 1, wherein: The heat insulation layer (2) is an aluminum silicate heat insulation layer (2).

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