Hearth anti-abrasion device for circulating fluidized bed boiler

Abstract

The utility model relates to the technical field of circulating fluidized bed boilers, and discloses a hearth anti-abrasion device for a circulating fluidized bed boiler, which comprises a boiler body, and an inner sleeve is fixedly mounted on the inner side of the boiler body. When the hearth anti-abrasion device for the circulating fluidized bed boiler is used, the arranged boiler body, the first anti-abrasion plate, the second anti-abrasion plate, the third anti-abrasion plate and the fourth anti-abrasion plate can form a double-side protection structure in the boiler body, multi-layer anti-abrasion protection is carried out on the interior of the hearth of the circulating fluidized bed boiler, and when the inner side anti-abrasion assembly is damaged, the inner side anti-abrasion assembly is not damaged. After the damaged area is positioned, the damaged boiler body, the second abrasion-proof plate, the third abrasion-proof plate or the fourth abrasion-proof plate can be correspondingly and independently pulled out forwards from the inner side of the inner sleeve and independently replaced, meanwhile, the maintenance economy of the device can be improved, and the problem that abrasion-proof protection cannot be conveniently conducted on the interior of a hearth of the circulating fluidized bed boiler is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circulating fluidized bed boiler technical field, concretely is a hearth anti -wear device for circulating fluidized bed boiler. BACKGROUND

[0002] Circulating fluidized bed boiler is a kind of boiler using fluidized combustion technology, mainly applied to some power station boiler and industrial boiler field. When running, solid fuel and combustion products are suspended in the bed layer by high-speed airflow to form a circulating flow state, so as to realize efficient and clean combustion process. During the operation of the circulating fluidized bed boiler, the high-speed moving hard material particles in the furnace, the high concentration of flue gas and the high flow rate will cause serious wear to the internal water-cooled tube wall of the furnace. In order to reduce and avoid the damage to the internal wall of the furnace, a hearth anti-wear device for circulating fluidized bed boiler is needed to protect the internal wall of the furnace from wear.

[0003] However, the anti-wear assembly installed on the inside of the furnace is generally of an integrated structure. When the single position inside the anti-wear assembly is damaged and needs to be replaced, the entire anti-wear assembly must be replaced, which is not only time-consuming and labor-intensive but also inconvenient for anti-wear protection of the internal furnace of the circulating fluidized bed boiler.

[0004] Now, a new hearth anti-wear device for circulating fluidized bed boiler is proposed to solve the above problems. SUMMARY

[0005] The utility model aims at providing a hearth anti-wear device for circulating fluidized bed boiler to solve the problem of inconvenient anti-wear protection of the internal furnace of the circulating fluidized bed boiler as mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hearth anti-wear device for circulating fluidized bed boiler, comprising a boiler body, an inner sleeve is fixedly installed on the inside of the boiler body, a first wear plate is arranged on the left side inside the inner sleeve, a second wear plate is arranged on the top end inside the inner sleeve, a third wear plate is arranged on the right side inside the inner sleeve, a fourth wear plate is arranged on the bottom end inside the inner sleeve, a second insertion block is fixedly arranged on the left side of the first wear plate and the right side of the third wear plate, second insertion grooves are arranged on both sides inside the inner sleeve, a first insertion block is fixedly arranged on the top end of the second wear plate and the bottom end of the fourth wear plate, and first insertion grooves are arranged on the top end and the bottom end inside the inner sleeve.

[0007] As a further technical scheme of the utility model, the second insertion block penetrates the inside of the second insertion groove, and the first insertion block penetrates the inside of the first insertion groove.

[0008] As a further technical scheme of the utility model, the anti-abrasion plate one, the anti-abrasion plate two, the anti-abrasion plate three and the anti-abrasion plate four are arranged on the inner side of the inner sleeve in a circle.

[0009] As a further technical scheme of the utility model, the right side of the anti-abrasion plate one and the left side of the anti-abrasion plate three are vertically and equidistantly provided with a plurality of support plates, and the support plates are symmetrically arranged about the vertical center line of the inner sleeve, the top end and the bottom end of one side of the support plate are respectively provided with a mounting bolt one, and the top end and the bottom end of the right side of the anti-abrasion plate one and the top end and the bottom end of the left side of the anti-abrasion plate three are respectively equidistantly provided with a plurality of mounting holes one.

[0010] As a further technical scheme of the utility model, the mounting bolt one penetrates the inside of the support plate and is threadedly connected in the mounting hole one.

[0011] As a further technical scheme of the utility model, the bottom end of the inside of the anti-abrasion plate four is provided with a fixing foot, the inside of both sides of the top end of the fixing foot is respectively provided with a mounting bolt two, and both sides of the inside bottom end of the mounting bolt two is respectively provided with a mounting hole two.

[0012] As a further technical scheme of the utility model, the fixing foot is equidistantly provided with a plurality of groups on the mounting bolt two.

[0013] As a further technical scheme of the utility model, the bottom end of the mounting bolt two penetrates the inside of the fixing foot and is threadedly connected in the mounting hole two.

[0014] Compared with the prior art, the utility model has the beneficial effects that: the furnace anti-abrasion device for the circulating fluidized bed boiler not only realizes the anti-abrasion protection of the inside of the furnace of the circulating fluidized bed boiler, realizes the auxiliary support of the inside of the anti-abrasion device, and realizes the auxiliary anti-skid positioning of the personnel entering the inside of the furnace for cleaning;

[0015] (1) through the boiler furnace body, the inner sleeve, the anti-abrasion plate one, the support plate, the anti-abrasion plate two, the slot one, the insert block one, the anti-abrasion plate three, the slot two, the insert block two and the anti-abrasion plate four, the device is installed on the inner side of the boiler furnace body, when using, through the boiler furnace body and the anti-abrasion plate one, the anti-abrasion plate two, the anti-abrasion plate three and the anti-abrasion plate four, a double-side protection structure can be formed in the inside of the boiler furnace body, the inside of the circulating fluidized bed boiler furnace is protected by multiple layers, when the inside anti-abrasion assembly is damaged, after positioning the damaged area, the damaged boiler furnace body, anti-abrasion plate two, anti-abrasion plate three or anti-abrasion plate four can be extracted from the inside of the inner sleeve, and the damaged part can be replaced and treated, so that the inside of the circulating fluidized bed boiler furnace is used for anti-abrasion, and the device maintenance economy can be improved;

[0016] (2) by being provided with the inner cover, the boiler body, the first wear plate, the support plate, the second wear plate, the third wear plate, the fourth wear plate, the first mounting bolt and the first mounting hole, the wear-resistant device is used, the support plate is fixed by the first mounting bolt on both sides in the device, and the internal structure of the wear-resistant device is assisted and supported by the two groups of support plates;

[0017] (3) by being provided with the boiler body, the inner cover, the fourth wear plate, the fixing foot, the second mounting bolt and the second mounting hole, the wear-resistant device is installed in the furnace during use, a plurality of fixing feet are fixed in the fourth wear plate during the ash removal and maintenance of the furnace, and the fixing feet are stepped on during the ash removal and cleaning in the furnace, so that the standing and operation of personnel are assisted and anti-skid positioning. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 it is a front view sectional structure schematic view of the utility model;

[0019] Figure 2 it is an inner cover front view structure schematic view of the utility model;

[0020] Figure 3 it is a support plate side view partial sectional enlarged structure schematic view of the utility model;

[0021] Figure 4 it is an A place enlarged structure schematic view in the utility model Figure 1 .

[0022] In the drawing: 1, boiler body; 2, inner cover; 3, first wear plate; 4, support plate; 5, second wear plate; 6, first slot; 7, first block; 8, third wear plate; 9, second slot; 10, second block; 11, fixing foot; 12, fourth wear plate; 13, first mounting bolt; 14, first mounting hole; 15, second mounting bolt; 16, second mounting hole. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] Please refer to Figures 1-4The utility model provides a kind of embodiment: a hearth anti-abrasion device for circulating fluidized bed boiler, including boiler furnace body 1, the inside of boiler furnace body 1 is fixed with inner sleeve 2, the left side of inner sleeve 2 inside is provided with anti-abrasion plate one 3, the top of inner sleeve 2 inside is provided with anti-abrasion plate two 5, the right side of inner sleeve 2 inside is provided with anti-abrasion plate three 8, the bottom of inner sleeve 2 inside is provided with anti-abrasion plate four 12, the left side of anti-abrasion plate one 3 and the right side of anti-abrasion plate three 8 are respectively fixed with plug block two 10, the two sides of inner sleeve 2 inside are respectively provided with slot two 9, the top of anti-abrasion plate two 5 and the bottom of anti-abrasion plate four 12 are respectively fixed with plug block one 7, the top and bottom of inner sleeve 2 inside are respectively provided with slot one 6;

[0025] Plug block two 10 penetrates the inside of slot two 9, plug block one 7 penetrates the inside of slot one 6, anti-abrasion plate one 3, anti-abrasion plate two 5, anti-abrasion plate three 8 and anti-abrasion plate four 12 are arranged in circumference on the inside of inner sleeve 2;

[0026] Specifically, as shown in Figure 1 And Figure 2 , by setting the boiler furnace body 1 and anti-abrasion plate one 3, anti-abrasion plate two 5, anti-abrasion plate three 8 and anti-abrasion plate four 12 can form double-sided protection structure inside the boiler furnace body 1, the inside of circulating fluidized bed boiler hearth is protected from abrasion in multiple layers, when the inside anti-abrasion assembly is damaged, the damaged area can be positioned, and the damaged boiler furnace body 1, anti-abrasion plate two 5, anti-abrasion plate three 8 or anti-abrasion plate four 12 can be extracted from the inside of inner sleeve 2, and the device maintenance economy is improved.

[0027] The right side of anti-abrasion plate one 3 and the left side of anti-abrasion plate three 8 are respectively vertically and equally spaced multiple groups of support plates 4, and the support plates 4 are symmetrically arranged about the vertical center line of the inner sleeve 2, the top and bottom of one side of the support plate 4 are respectively provided with mounting bolts one 13, the top and bottom of the right side of the anti-abrasion plate one 3 and the top and bottom of the left side of the anti-abrasion plate three 8 are respectively equally spaced multiple groups of mounting holes one 14, and the mounting bolts one 13 penetrate the inside of the support plate 4 and are threadedly connected in the mounting hole one 14;

[0028] Specifically, as shown in Figure 1 And Figure 3 , the support plates 4 are respectively fixed on the two sides of the device by the mounting bolts one 13, and the two symmetrically arranged support plates 4 can assist in supporting and strengthening the internal structure of the anti-abrasion device.

[0029] The bottom of the anti-abrasion plate four 12 is provided with a fixing foot 11, the inside of the top of the fixing foot 11 is provided with a mounting bolt two 15, the inside of the bottom of the mounting bolt two 15 is provided with a mounting hole two 16, and the fixing foot 11 is equally spaced multiple groups on the mounting bolt two 15, and the bottom of the mounting bolt two 15 penetrates the inside of the fixing foot 11 and is threadedly connected in the mounting hole two 16.

[0030] Specifically, as shown in Figure 1 and Figure 4 shown, when the inside of the furnace is cleaned and maintained, a plurality of fixed feet 11 are fixedly installed inside the fourth wear-resistant plate 12, and when personnel enter the inside of the furnace for cleaning and cleaning operation, stepping on the fixed feet 11 can assist in anti-skid positioning when personnel stand and operate.

[0031] Working principle: when the device is installed on the inner side of the boiler furnace body 1, the double-sided protection structure can be formed inside the boiler furnace body 1 by the boiler furnace body 1 and the first wear-resistant plate 3, the second wear-resistant plate 5, the third wear-resistant plate 8 and the fourth wear-resistant plate 12, and the inside of the circulating fluidized bed boiler furnace is protected from wear and tear. When the inside wear-resistant assembly is damaged, the damaged area can be positioned, and the damaged boiler furnace body 1, the second wear-resistant plate 5, the third wear-resistant plate 8 or the fourth wear-resistant plate 12 can be correspondingly extracted from the inside of the inner sleeve 2, and the damaged part can be replaced and treated. At the same time, when the wear-resistant device is used, the supporting plates 4 are fixedly installed on both sides of the device, and the symmetrical two groups of supporting plates 4 can assist in supporting and strengthening the internal structure of the wear-resistant device. And during the use of the wear-resistant device installed in the inside of the furnace, when the inside of the furnace is cleaned and maintained, a plurality of fixed feet 11 are fixedly installed inside the fourth wear-resistant plate 12, and when personnel enter the inside of the furnace for cleaning and cleaning operation, stepping on the fixed feet 11 can assist in anti-skid positioning when personnel stand and operate.

[0032] It is apparent for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A furnace wear protection device for a circulating fluidized bed boiler, comprising a boiler furnace (1), characterized in that: The inner side of the boiler furnace (1) is fixedly provided with an inner sleeve (2), the left side of the inner sleeve (2) is provided with an anti-abrasion plate one (3), the top end of the inner sleeve (2) is provided with an anti-abrasion plate two (5), the right side of the inner sleeve (2) is provided with an anti-abrasion plate three (8), the bottom end of the inner sleeve (2) is provided with an anti-abrasion plate four (12), the left side of the anti-abrasion plate one (3) and the right side of the anti-abrasion plate three (8) are respectively fixedly provided with an insertion block two (10), both sides of the inner sleeve (2) are respectively provided with an insertion slot two (9), the top end of the anti-abrasion plate two (5) and the bottom end of the anti-abrasion plate four (12) are respectively fixedly provided with an insertion block one (7), and the top end and the bottom end of the inner sleeve (2) are respectively provided with an insertion slot one (6).

2. A furnace wear protection device for a circulating fluidized bed boiler according to claim 1, characterized in that: The insertion block two (10) penetrates the inside of the insertion slot two (9), and the insertion block one (7) penetrates the inside of the insertion slot one (6).

3. A furnace wear protection device for a circulating fluidized bed boiler according to claim 1, characterized in that: The anti-abrasion plate one (3), the anti-abrasion plate two (5), the anti-abrasion plate three (8) and the anti-abrasion plate four (12) are circumferentially arranged on the inner side of the inner sleeve (2).

4. A furnace wear protection device for a circulating fluidized bed boiler according to claim 1, characterized in that: A plurality of groups of supporting plates (4) are vertically and equidistantly arranged on the right side of the anti-abrasion plate one (3) and the left side of the anti-abrasion plate three (8), and the supporting plates (4) are symmetrically arranged about the vertical center line of the inner sleeve (2), the top end and the bottom end of one side of the supporting plate (4) are respectively provided with a mounting bolt one (13), and the top end and the bottom end of the right side of the anti-abrasion plate one (3) and the top end and the bottom end of the left side of the anti-abrasion plate three (8) are respectively equidistantly provided with a plurality of groups of mounting holes one (14).

5. A furnace wear protection device for a circulating fluidized bed boiler according to claim 4, characterized in that: The mounting bolt one (13) penetrates the inside of the supporting plate (4) and is threadedly and rotationally connected in the mounting hole one (14).

6. A furnace wear protection device for a circulating fluidized bed boiler according to claim 1, characterized in that: The bottom end of the anti-abrasion plate four (12) is provided with a fixing foot (11), the inner sides of the top ends of both sides of the fixing foot (11) are respectively provided with a mounting bolt two (15), and both sides of the bottom end of the inside of the mounting bolt two (15) are respectively provided with a mounting hole two (16).

7. A furnace wear protection device for a circulating fluidized bed boiler according to claim 6, characterized in that: A plurality of groups of the fixing foot (11) are equidistantly arranged on the mounting bolt two (15).

8. A furnace wear protection device for a circulating fluidized bed boiler according to claim 6, characterized in that: The bottom end of the mounting bolt two (15) penetrates the inside of the fixing foot (11) and is threadedly and rotationally connected in the mounting hole two (16).

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