Arrangement structure of water cooling wall in incinerator grate area of garbage incinerator

Abstract

The utility model discloses an arrangement structure of a water-cooled wall of an incinerator grate area of a garbage incinerator, which relates to the technical field of cooling of the incinerator grate area and comprises the incinerator grate area and a water-cooled wall tube used for cooling the incinerator grate, and the water-cooled wall tube comprises a water-cooled wall tube front arch, a water-cooled wall tube rear arch and water-cooled wall tubes on two sides of the incinerator grate area. And the air inlet pipes are respectively arranged on a front arch, a rear arch and two sides of an incinerator grate area. According to the utility model, the service life of the castable is effectively prolonged, the service power consumption is saved, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling of an incineration grate area, in particular to an arrangement structure of a water-cooled wall in an incineration grate area of ​​a garbage furnace. Background Art

[0002] When the garbage incinerator burns garbage, it usually adopts the grate layer burning method. The garbage is piled on the grate for burning. Therefore, the smoke temperature in the grate area is the highest part of the entire garbage incinerator. According to the traditional layout method, the front and rear arches and the two side walls of the grate area usually adopt the layout method of the guard plate furnace wall, and the guard plates on both sides are guard plate air cooling walls. The outer side of the guard plate furnace wall is a guard plate, and the fire side is a castable. Since the castable is not well cooled, after the garbage incinerator has been running for a period of time, due to the high calorific value of the fuel and the high smoke temperature, the castable will be burned, affecting the service life of the boiler and causing the boiler to fail to operate normally. In order to solve the above problems, the water-cooled wall layout structure of the incineration grate area is optimized, and the air-cooled wall and cooling fan are cancelled. Not only can the castable on the fire side be cooled by the water-cooled wall, but it can also effectively increase the service life of the castable, save factory electricity consumption, and reduce operating costs. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a layout structure of the water-cooled wall in the incineration grate area of ​​a garbage furnace, which can not only cool the castable on the fire side through the water-cooled wall, but also effectively improve the service life of the castable, save plant electricity consumption, and reduce operating costs.

[0004] The purpose of the utility model is achieved through the following technical solutions: a layout structure of a water-cooled wall in the incineration grate area of ​​a garbage furnace, including an incineration grate area and water-cooled wall tubes for cooling the incineration grate, the water-cooled wall tubes including a front arch of the water-cooled wall tube, a rear arch of the water-cooled wall tube and water-cooled wall tubes on both sides of the grate area, and they are respectively arranged at the front arch, the rear arch and both sides of the incineration grate area.

[0005] It also includes a water-cooled wall tube header, which includes an upper header for a front arch of the water-cooled wall tube, upper headers for the water-cooled wall tubes on both sides of the grate area, an upper header for the rear arch of the water-cooled wall tube, a lower header for the front arch of the water-cooled wall tube, a lower header for the rear arch of the water-cooled wall tube, and lower headers for the water-cooled wall tubes on both sides of the grate area. One end of the front arch of the water-cooled wall tube is connected to the upper header for the front arch of the water-cooled wall tube, one end of the rear arch of the water-cooled wall tube is connected to the upper header for the rear arch of the water-cooled wall tube, one end of the water-cooled wall tubes on both sides of the grate area is connected to the upper header for the water-cooled wall tubes on both sides of the grate area, the other end of the front arch of the water-cooled wall tube is connected to the lower header for the front arch of the water-cooled wall tube, the other end of the rear arch of the water-cooled wall tube is connected to the lower header for the rear arch of the water-cooled wall tube, and the other end of the water-cooled wall tubes on both sides of the grate area are connected to the lower header for the water-cooled wall tubes on both sides of the grate area.

[0006] Furthermore, the water-cooled wall tube front arch upper header is arranged on the left side of the water-cooled wall tube upper header on both sides of the grate area, and the water-cooled wall tube rear arch upper header is arranged on the right side of the water-cooled wall tube upper header on both sides of the grate area.

[0007] Furthermore, the upper header and the lower header of the water-cooled wall tube header are respectively connected to the water space of the boiler drum to form a water circulation system of the water-cooled wall.

[0008] Furthermore, the water-cooled wall tube header is provided with a hand hole for use in removing scale.

[0009] Preferably, the water-cooled wall tube is made of seamless steel pipe.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model designs a water-cooled wall arrangement structure in the incineration grate area. Compared with the prior art, the air-cooled wall and the cooling fan are cancelled and replaced with a water-cooled wall. Not only can the castable on the fire side be cooled by the water-cooled wall, but the service life of the castable can also be effectively improved, the factory electricity consumption is saved, and the operation cost is reduced.

[0012] 2. The utility model forms a water circulation system of the water-cooled wall by arranging an upper header and a lower header of the water-cooled wall tube header, which are respectively connected to the water space of the boiler drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] In the figure: 1-front arch of water-cooled wall tube, 2-rear arch of water-cooled wall tube, 3-water-cooled wall tubes on both sides of grate area, 4-upper header of water-cooled wall tube front arch, 5-incineration grate area, 6-lower header of water-cooled wall tube front arch, 7-lower header of water-cooled wall tube rear arch, 8-lower header of water-cooled wall tube on both sides of grate area, 10-upper header of water-cooled wall tube rear arch, 11-upper header of water-cooled wall tube on both sides of grate area. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Embodiment 1:

[0018] like Figure 1 As shown, a layout structure of the water-cooled wall of the incineration grate area of ​​a garbage furnace includes an incineration grate area 5 and water-cooled wall tubes for cooling the incineration grate, and the water-cooled wall tubes include a front arch 1 of the water-cooled wall tube, a rear arch 2 of the water-cooled wall tube, and water-cooled wall tubes 3 on both sides of the grate area, and they are respectively arranged in the front arch, rear arch and both sides of the incineration grate area 5. The castable on the fire side (that is, the incineration grate area 5) is cooled by the water-cooled wall tubes (referred to as water-cooled wall, whose main function is to absorb a large amount of radiant heat from high-temperature flue gas, and at the same time can reduce the damage of slag and high-temperature flue gas to the furnace wall and protect the furnace wall), thereby reducing the operating temperature of the castable and effectively improving the service life of the castable. The upper part of the water-cooled wall in the incineration grate area can also be provided with a water-cooled wall of the first flue area for cooling the first flue.

[0019] Embodiment 2:

[0020] On the basis of Example 1, a layout structure of the water-cooled wall in the grate area of ​​a garbage incinerator also includes a water-cooled wall tube header, the water-cooled wall tube header includes a water-cooled wall tube front arch upper header 4, water-cooled wall tube upper headers 11 on both sides of the grate area, water-cooled wall tube rear arch upper header 10, water-cooled wall tube front arch lower header 6, water-cooled wall tube rear arch lower header 7 and water-cooled wall tube lower headers 8 on both sides of the grate area, one end of the water-cooled wall tube front arch 1 is connected to the water-cooled wall tube front arch upper header 4, one end of the water-cooled wall tube rear arch 2 is connected to the water-cooled wall tube rear arch upper header 10, one end of the water-cooled wall tubes 3 on both sides of the grate area are connected to the water-cooled wall tube upper headers 11 on both sides of the grate area, the other end of the water-cooled wall tube front arch 1 is connected to the water-cooled wall tube front arch lower header 6, the other end of the water-cooled wall tube rear arch 2 is connected to the water-cooled wall tube rear arch lower header 7, and the other end of the water-cooled wall tubes 3 on both sides of the grate area are connected to the water-cooled wall tube lower headers 8 on both sides of the grate area.

[0021] Embodiment 3:

[0022] Based on Example 2, the front arch upper header 4 of the water-cooled wall tube is arranged on the left side of the water-cooled wall tube upper header 11 on both sides of the grate area, and the rear arch upper header 10 of the water-cooled wall tube is arranged on the right side of the water-cooled wall tube upper header 11 on both sides of the grate area.

[0023] Embodiment 4:

[0024] On the basis of Example 2, this example makes an improvement on the water-cooled wall tube header, and the upper header and the lower header of the water-cooled wall tube header are respectively connected to the water space of the boiler drum to form a water circulation system of the water-cooled wall.

[0025] Embodiment 5:

[0026] On the basis of Example 2, this example makes an improvement on the water-cooled wall tube header, and the water-cooled wall tube header is provided with a hand hole for use in removing scale.

[0027] Embodiment 6:

[0028] Based on Examples 1-5, this example improves the water-cooled wall tubes. The water-cooled wall tubes are made of No. 10 or No. 20 seamless steel tubes with an outer diameter of 51 to 76 mm and a wall thickness of 3.5 to 6.0 mm. The tube center distance is 1.25 to 2 times the outer diameter of the tube.

[0029] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An arrangement structure of a water-cooled wall in the incineration grate area of ​​a garbage furnace, characterized in that: It comprises an incineration grate area (5) and water-cooled wall tubes for cooling the incineration grate, wherein the water-cooled wall tubes comprise a front arch (1) of the water-cooled wall tubes, a rear arch (2) of the water-cooled wall tubes and water-cooled wall tubes (3) on both sides of the grate area, and the water-cooled wall tubes are respectively arranged on the front arch, the rear arch and both sides of the incineration grate area (5).

2. The arrangement structure of the water-cooled wall in the incineration grate area of ​​a garbage furnace according to claim 1, characterized in that: The water-cooled wall tube header also includes a water-cooled wall tube front arch upper header (4), water-cooled wall tube upper headers (11) on both sides of the grate area, water-cooled wall tube rear arch upper headers (10), water-cooled wall tube front arch lower headers (6), water-cooled wall tube rear arch lower headers (7) and water-cooled wall tube lower headers (8) on both sides of the grate area, one end of the water-cooled wall tube front arch (1) is connected to the water-cooled wall tube front arch upper header (4), one end of the water-cooled wall tube rear arch (2) is connected to the water-cooled wall tube The water-cooled wall tube rear arch is connected to an upper header (10), one end of the water-cooled wall tubes (3) on both sides of the grate area is connected to an upper header (11) of the water-cooled wall tubes on both sides of the grate area, the other end of the water-cooled wall tube front arch (1) is connected to a lower header (6) of the water-cooled wall tube front arch, the other end of the water-cooled wall tube rear arch (2) is connected to a lower header (7) of the water-cooled wall tube rear arch, and the other end of the water-cooled wall tubes (3) on both sides of the grate area is connected to a lower header (8) of the water-cooled wall tubes on both sides of the grate area.

3. The arrangement structure of the water-cooled wall in the incineration grate area of ​​a garbage furnace according to claim 2, characterized in that: The water-cooled wall tube front arch upper header (4) is arranged on the left side of the water-cooled wall tube upper headers (11) on both sides of the grate area, and the water-cooled wall tube rear arch upper header (10) is arranged on the right side of the water-cooled wall tube upper headers (11) on both sides of the grate area.

4. The arrangement structure of the water-cooled wall in the incineration grate area of ​​a garbage furnace according to claim 2, characterized in that: The upper header and the lower header of the water-cooled wall tube header are respectively connected to the water space of the boiler drum to form a water circulation system of the water-cooled wall.

5. The arrangement structure of the water-cooled wall in the incineration grate area of ​​a garbage furnace according to claim 2, characterized in that: The water-cooled wall tube header is provided with a hand hole.

6. The arrangement structure of the water-cooled wall in the incineration grate area of ​​a garbage furnace according to claim 1, characterized in that: The water-cooled wall tube is made of seamless steel tube.

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