CN212929976U - Novel fluidized bed boiler water-cooling center section of thick bamboo - Google Patents

Abstract

The utility model discloses a novel fluidized bed boiler water-cooling central cylinder, which comprises an outlet header, wherein the outer side of the outlet header is provided with an inlet header, the outer side of the inlet header is provided with a fire-resistant sleeve, two sides of the inner side of the fire-resistant sleeve are provided with arc-shaped heat-insulating layers, one sides of the arc-shaped heat-insulating layers, which are close to each other, are provided with arc-shaped permeation layers, and the middle position of the arc-shaped heat-insulating layers is provided with a vent; the utility model discloses the device is through evenly setting up many water-cooled tubes at the circumference between the import collection box and the export collection box of coaxial setting, effectively reduces center tube pipe wall temperature, has guaranteed the operation of center tube reliably, simultaneously, sets up the fire-resistant sleeve pipe of being made by refractory material in the water-cooled tube outside to and set up the abrasionproof layer of pouring by plastic material in import collection box, export collection box and the water-cooled tube outside, improved the life of whole center tube greatly; meanwhile, the structure is very simple, and the manufacturing cost is low.

Description

Novel fluidized bed boiler water-cooling center section of thick bamboo

Technical Field

The utility model relates to a fluidized bed technical field specifically is a novel fluidized bed boiler water-cooling center section of thick bamboo.

Background

The circulating fluidized bed boiler is a device for controlling the combustion of fossil fuel in a special fluidized state in a hearth to generate steam, wherein fine solid particles are conveyed through the hearth at a certain speed, most of the particles leaving the hearth are captured by a gas-solid separator and are returned to the hearth at a certain height from an air distribution plate to form sufficient solid material circulation and ensure relatively uniform hearth temperature, and the circulating fluidized bed boiler is developed in China for almost thirty years, but is still imperfect in the aspects of design, equipment manufacturing, maintenance and the like. With the operation of the large-capacity circulating fluidized bed boiler unit, the large-scale circulating fluidized bed boiler equipment exposes some defects in the operation process;

the central cylinder is one of the main components of the circulating fluidized bed boiler, and when the central cylinder is operated, problems such as

1. At present, all central cylinders are made of heat-resistant cast steel or heat-resistant steel plates, but the cost is very high during manufacturing, installation and transportation, the central cylinder is installed at the upper part of a cyclone separator, the temperature is above 900 ℃, and some cast central cylinders have cracks or burning loss due to different material formulas and the content of rare metals or defects in the manufacturing process;

2. when the central cylinder is used for water cooling circulation, the water flow is too fast due to the adopted forced circulation, the stability of the water circulation is not easy to ensure, the fitting degree of the water cooling and the pipe wall is poor, and the effect of the water cooling work is reduced;

3. during the water cooling work period, the gas in the pipeline is not easy to diffuse and discharge, the subsequent cooling work is influenced by concentrating in the pipeline, and meanwhile, the heating surface of the pipeline is increased successively, so that the heat discharge effect of the device in actual use cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel fluidized bed boiler water-cooling center section of thick bamboo to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel fluidized bed boiler water-cooling center section of thick bamboo, includes the export collection case, the outside of export collection case is equipped with the import collection case, the outside of import collection case is equipped with fire-resistant sleeve pipe, the inboard both sides of fire-resistant sleeve pipe are equipped with the arc insulating layer, one side that the arc insulating layer is close to each other is equipped with the arc permeable formation, the intermediate position department of arc insulating layer is equipped with the vent, the inboard of import collection case evenly is equipped with the water-cooled tube, the top that one side was kept away from each other to the water-cooled tube is equipped with the water inlet rather than mutual intercommunication, the inboard of water-cooled tube is equipped with the spiral honeycomb duct, the inside both sides of import collection case are equipped with the cold flow layer that.

Preferably, a sealing cover is arranged on the outer side of the arc-shaped air inlet pipe.

Preferably, the water cooling pipe is attached to the arc-shaped permeation layer.

Preferably, one end of the arc-shaped heat insulation layer, which is close to each other, is provided with a rubber buffer block.

Preferably, the vent is in an arc-shaped through hole structure.

Preferably, the outer sides of the outlet header, the inlet header and the water cooling pipe are all provided with an anti-abrasion layer.

Compared with the prior art, the beneficial effects of the utility model are that: the novel fluidized bed boiler water-cooling central cylinder increases the cooling of water cooling to the pipe wall through the matching of a plurality of groups of water-cooling pipes and the spiral flow guide pipe, guides the gas of a pipeline under the communicated gas injection of the arc-shaped air inlet pipe and the cold flow layer, has simple and reasonable structural design and enhances the practicability of the device;

1. the plurality of water-cooling pipes are uniformly arranged on the circumference between the coaxially arranged inlet header and the coaxially arranged outlet header, so that the temperature of the wall of the central cylinder is effectively reduced, the reliable operation of the central cylinder is ensured, meanwhile, the outer sides of the water-cooling pipes are provided with the fire-resistant sleeves made of fire-resistant materials, and the outer sides of the inlet header, the outlet header and the water-cooling pipes are provided with the anti-abrasion layers poured by plastic materials, so that the service life of the whole central cylinder is greatly prolonged; meanwhile, the structure is very simple, and the manufacturing cost is low;

2. by utilizing the mutual communication of the water inlet and the water cooling pipe and the installation and matching of the spiral flow guide pipe, when the device is in water circulation operation, water flow not only obtains spiral guide movement under the pressure amplitude, but also increases the attaching degree with the pipe wall and strengthens the cooling effect of the central cylinder;

3. the arc air inlet pipe and the cold flow layer are communicated with each other, so that guide gas can be injected into the arc air inlet pipe and the cold flow layer, the guide gas penetrates through the ventilation position of the ventilation opening, the gas discharge of the pipeline is guided, and meanwhile, the heat dissipation and heat insulation effects of the central cylinder are further improved by matching with the cooling of the water cooling pipe on the pipe wall.

Drawings

Fig. 1 is a front sectional view of the present invention;

fig. 2 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention;

FIG. 3 is a top view of the inlet header of the present invention;

FIG. 4 is a top view of the arc-shaped thermal insulation layer of the present invention;

fig. 5 is a front view of the present invention.

In the figure: 1. an outlet header; 2. an inlet header; 3. a water inlet; 4. a water-cooled tube; 5. a refractory casing; 6. an arc-shaped heat insulation layer; 7. a spiral draft tube; 8. a vent; 9. a cold flow layer; 10. an arc air inlet pipe; 11. an arcuate permeable layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment: the utility model provides a novel fluidized bed boiler water-cooling center section of thick bamboo, including export collection case 1, the outside of export collection case 1 is equipped with import collection case 2, the outside of import collection case 2 is equipped with fire-resistant sleeve 5, the inboard both sides of fire-resistant sleeve 5 are equipped with arc insulating layer 6, one side that arc insulating layer 6 is close to each other is equipped with arc permeable formation 11, the intermediate position department of arc insulating layer 6 is equipped with vent 8, the inboard of import collection case 2 evenly is equipped with water-cooled tube 4, the top that one side was kept away from each other to water-cooled tube 4 is equipped with rather than the water inlet 3 that communicates each other, the inboard of water-cooled tube 4 is equipped with spiral honeycomb duct 7, the inside both sides of import collection case 2 are equipped with the cold flow layer 9 that communicates each.

Furthermore, a sealing cover is arranged on the outer side of the arc-shaped air inlet pipe 10 to prevent hot air from overflowing.

Further, water-cooling pipe 4 laminates with arc permeable formation 11 each other, increases the laminating infiltration function of part to the subsequent quick heat dissipation of cooperation.

Furthermore, the rubber buffer block is arranged at one end, close to each other, of the arc-shaped heat insulation layer 6, so that the buffering performance of the part is improved.

Furthermore, the vent 8 is of an arc-shaped through hole structure, so that the guidance of airflow is improved.

Furthermore, the outer sides of the outlet header 1, the inlet header 2 and the water cooling pipe 4 are all provided with an anti-abrasion layer, so that the service life of the parts is prolonged.

The working principle is as follows: when the device is used, the utility model discloses by import collection case 2, water-cooled tube 4, export collection case 1 and fire-resistant sleeve 5 cooperation constitution, beat the pin on collection case and the pipe, after on-the-spot collection case and pipe of having installed, wholly pour the plastic material of a layer 160mm thick and prevent wearing and tearing, break off the pipeline that the economizer advances the boiler barrel from suitable position, insert import collection case 2, for water flow through water-cooled tube 4 after drawing out from export collection case 1, during the period under the cooperation guide of spiral honeycomb duct 7, strengthen the laminating degree and the velocity of flow of rivers to the pipe wall, then insert former economizer pipeline, because the adoption is forced circulation, the velocity of flow is faster, so the utility model discloses a water flow is safer, does benefit to the cooling work to center tube pipeline; 40 root canals are arranged altogether to water-cooled tube 4, can effectively reduce central section of thick bamboo pipe wall temperature, and the operation of having guaranteed a central section of thick bamboo is reliable to accessible arc air-supply line 10 pours into air conditioning into with the intercommunication on cold flow layer 9, leads through vent 8, and cools off water-cooled tube 4's outer wall, and not only steam in the pipeline gives off fast, and the velocity of flow that accompanies water-cooled tube 4 simultaneously carries out the dual cooling effect of inner wall and outer wall, increases the practicality of device, the utility model discloses with low costs, make, the installation simply, the transportation expense is low. The problem of deformation and abrasion of the central cylinder can be simply solved, and the boiler efficiency is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that unless otherwise explicitly specified or limited, the terms connected or connected should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (6)

1. The utility model provides a novel fluidized bed boiler water-cooling center section of thick bamboo, includes export collection case (1), its characterized in that: an inlet header (2) is arranged on the outer side of the outlet header (1), a fire-resistant sleeve (5) is arranged on the outer side of the inlet header (2), arc-shaped heat insulation layers (6) are arranged on two sides of the inner side of the fire-resistant sleeve (5), arc-shaped permeable layers (11) are arranged on the sides, close to each other, of the arc-shaped heat insulation layers (6), a ventilation opening (8) is arranged in the middle of the arc-shaped heat insulation layer (6), water cooling pipes (4) are uniformly arranged on the inner side of the inlet header (2), the top of one side of the water-cooling pipe (4) far away from each other is provided with a water inlet (3) communicated with the water-cooling pipe, the inside of water-cooling pipe (4) is equipped with spiral honeycomb duct (7), the inside both sides of import collection case (2) are equipped with cold flow layer (9) that communicate each other with vent (8), the top of cold flow layer (9) is equipped with arc air-supply line (10).

2. The novel water-cooling central cylinder of the fluidized bed boiler as claimed in claim 1, wherein: and a sealing cover is arranged on the outer side of the arc-shaped air inlet pipe (10).

3. The novel water-cooling central cylinder of the fluidized bed boiler as claimed in claim 1, wherein: the water-cooling pipe (4) is attached to the arc-shaped permeable layer (11).

4. The novel water-cooling central cylinder of the fluidized bed boiler as claimed in claim 1, wherein: and one end of the arc-shaped heat insulation layer (6) close to each other is provided with a rubber buffer block.

5. The novel water-cooling central cylinder of the fluidized bed boiler as claimed in claim 1, wherein: the ventilation opening (8) is of an arc-shaped through hole structure.

6. The novel water-cooling central cylinder of the fluidized bed boiler as claimed in claim 1, wherein: and the outer sides of the outlet header (1), the inlet header (2) and the water cooling pipe (4) are all provided with an anti-abrasion layer.

Images