Sealing and heat preservation device for boiler ceiling of power plant

Abstract

A boiler is arranged between a bottom plate and a ceiling, supporting columns are arranged on the periphery of the boiler, the tops and the bottoms of the supporting columns are connected with the ceiling and the bottom plate, a heat preservation sealing box is arranged on the ceiling, clamping grooves are formed in the box wall of the heat preservation sealing box, and fireproof heat preservation mechanisms are arranged in the clamping grooves in a penetrating mode. Springs are arranged between the side walls of connecting frames of the fireproof heat preservation mechanisms and fireproof heat preservation plates, fixing plates are arranged at one ends of the connecting frames, handles are arranged on the fixing plates, smoke exhaust pipes are arranged between the adjacent fireproof heat preservation mechanisms, the bottom ends of the smoke exhaust pipes penetrate through the ceiling, a smoke exhaust header pipe is arranged at the top ends of the smoke exhaust pipes, and a crawling ladder is arranged between the bottom plate and the ceiling. In winter, the fireproof heat preservation mechanism is inserted into the clamping groove of the heat preservation sealing box for sealing heat preservation, when a fireproof coating layer of the fireproof heat preservation plate is heated to slightly expand, adjustment is conducted through the telescopic spring, the fireproof heat preservation plate is tightly attached to the smoke exhaust pipe and conducts heat preservation on the smoke exhaust pipe, meanwhile, the top of the boiler is prevented from being contaminated by dust, and heat preservation is not needed in summer; the fireproof heat preservation device is pulled out for use in winter.

Description

Technical Field

[0001] The utility model belongs to the technical field of boilers, and in particular relates to a sealing and heat-insulating device for a boiler ceiling in a power plant. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The original meaning of pot refers to a water container heated on fire, and furnace refers to a place where fuel is burned. The boiler consists of two major parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and also has a small number of applications in industrial production. A boiler that generates steam is called a steam boiler, often referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises.

[0003] The ceiling of the boiler needs to be treated with fireproofing and heat insulation. The existing treatment method has a poor sealing effect, and the expansion of the materials used will cause damage to the furnace roof and cause ash leakage. Utility Model Content

[0004] The utility model aims to provide a sealing and heat-insulating device for the ceiling of a boiler in a power plant to solve the above-mentioned problem.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A sealing and heat-insulating device for the ceiling of a power plant boiler comprises a bottom plate and a ceiling, a boiler is arranged between the bottom plate and the ceiling, a plurality of support columns are arranged around the boiler, the top and bottom ends of the support columns are fixedly connected to the ceiling and the bottom plate respectively, a heat-insulating sealing box is arranged on the ceiling, a plurality of slots are evenly arranged on the box wall of the heat-insulating sealing box, a fire-proof heat-insulating mechanism is penetrated in the slots, the fire-proof heat-insulating mechanism comprises a connecting frame and fire-proof heat-insulating plates symmetrically arranged on both sides of the connecting frame, a plurality of springs are evenly arranged between the side wall of the connecting frame and the fire-proof heat-insulating plate, a fixing plate is arranged at one end of the connecting frame, a handle is arranged on the fixing plate, a smoke exhaust pipe is arranged between adjacent fire-proof heat-insulating mechanisms, the bottom end of the smoke exhaust pipe is penetrated in the ceiling and connected with the smoke exhaust port of the boiler, a smoke exhaust main pipe is arranged at the top end of the smoke exhaust pipe for connecting the plurality of smoke exhaust pipes, and a ladder is arranged between the bottom plate and the ceiling.

[0007] In order to further realize the utility model, the card slots are arranged in parallel.

[0008] In order to further realize the utility model, the connecting frame includes a groove plate and a frame arranged around the groove plate, and the fireproof heat-insulating plate is clamped in the frame.

[0009] To further implement the present utility model, the frame is clamped in the card slot.

[0010] To further implement the present utility model, the size of the fixing plate is larger than the size of the card slot.

[0011] To further implement the present utility model, a number of legs are provided on the boiler, and the legs are fixedly connected to the bottom plate.

[0012] To further implement the present utility model, a number of fixed angle irons are provided on the heat preservation and sealing box, and the fixed angle irons are fixedly connected to the ceiling.

[0013] To further implement the present utility model, a guardrail is provided on the ceiling.

[0014] To further implement the present utility model, a number of connecting plates are provided around the bottom plate, and the connecting plates are fixedly connected to the floor.

[0015] To further implement the present utility model, a fireproof coating layer is provided on the outer walls of the fireproof heat preservation board and the smoke exhaust pipe.

[0016] The beneficial effects of the present utility model compared with the prior art are as follows:

[0017] The present utility model designs structures such as a smoke exhaust pipe, a main smoke exhaust pipe, a heat preservation and sealing box, and a fireproof heat preservation mechanism. In winter, the fireproof heat preservation mechanism needs to be inserted into the card slot of the heat preservation and sealing box for sealing and heat preservation. When the fireproof coating layer on the fireproof heat preservation board expands slightly due to heat, it is adjusted by the telescopic spring, so that the fireproof heat preservation board is close to the smoke exhaust pipe and insulates it, and at the same time prevents the top of the boiler from being contaminated with dust. In summer, heat preservation is not required, and the fireproof heat preservation device is taken out for use in winter. Description of the Drawings

[0018] Figure 1 is a structural schematic diagram of the present utility model;

[0019] Figure 2 is a split structural schematic diagram of the present utility model;

[0020] Figure 3 is a sectional structural schematic diagram of the heat preservation and sealing box of the present utility model;

[0021] Figure 4 is a split structural schematic diagram of the fireproof heat preservation mechanism of the present utility model;

[0022] The meanings of the reference numerals are as follows: 1, bottom plate; 2, support column; 3, ceiling; 4, fixed angle iron; 5, heat preservation and sealing box; 6, fireproof and heat preservation mechanism; 7, leg; 8, boiler; 9, ladder; 10, connecting plate; 11, exhaust pipe; 12, main exhaust pipe; 13, guardrail; 15, card slot; 16, exhaust port; 601, groove plate; 602, fixing plate; 603, handle; 604, spring; 605, fireproof and heat preservation board; 606, connecting frame; 607, frame. Detailed implementation mode

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and the detailed implementation mode.

[0024] As Figures 1-4 shown, a sealing and heat preservation device for the ceiling of a power plant boiler includes a bottom plate 1 and a ceiling 3. A plurality of connecting plates 10 are arranged around the bottom plate 1, and the connecting plates 10 are fixedly connected to the floor. A guardrail 13 is arranged on the ceiling 3. The boiler 8 is arranged between the bottom plate 1 and the ceiling 3. A plurality of legs 7 are arranged on the boiler 8, and the legs 7 are fixedly connected to the bottom plate 1. A plurality of support columns 2 are arranged around the boiler 8. The top and bottom ends of the support columns 2 are respectively fixedly connected to the ceiling 3 and the bottom plate 1. A heat preservation and sealing box 5 is arranged on the ceiling 3. A plurality of fixed angle irons 4 are arranged on the heat preservation and sealing box 5, and the fixed angle irons 4 are fixedly connected to the ceiling 3. A plurality of card slots 15 are evenly and parallelly arranged on the box wall of the heat preservation and sealing box 5. A fireproof and heat preservation mechanism 6 is arranged through the card slots 15. The fireproof and heat preservation mechanism 6 includes a connecting frame 606 and fireproof and heat preservation boards 605 symmetrically clamped on both sides of the connecting frame 606. The connecting frame 606 includes a groove plate 601 and a frame 607 arranged around the groove plate 601. The frame 607 is clamped in the card slot 15, and the fireproof and heat preservation board 605 is clamped in the frame 607. A plurality of springs 604 are evenly arranged between the side wall of the connecting frame 606 and the fireproof and heat preservation board 605. One end of the connecting frame 606 is provided with a fixing plate 602. The size of the fixing plate 602 is larger than the size of the card slot 15. A handle 603 is arranged on the fixing plate 602. An exhaust pipe 11 is arranged between adjacent fireproof and heat preservation mechanisms 6. The bottom end of the exhaust pipe 11 passes through the ceiling 3 and is communicated with the exhaust port 16 of the boiler 8. The top end of the exhaust pipe 11 is provided with a main exhaust pipe 12 for communicating a plurality of exhaust pipes 11. Fireproof coating layers are arranged on the outer walls of the fireproof and heat preservation board 605 and the exhaust pipe 11. A ladder 9 is arranged between the bottom plate 1 and the ceiling 3.

[0025] The fireproof coating of the fireproof coating layer is a special type of fireproof protection coating, which is a solvent-based coating composed of chlorinated rubber, paraffin wax and a variety of fireproof additives. It has good fire resistance. When applied to the surface of ordinary electric wires, it expands to produce a 200-mm-thick foam when encountering fire and carbonizes into a protective layer to isolate the fire source. It is suitable for the fireproof protection of indoor and outdoor cable wires in buildings with relatively high grades such as power plants and substations.

[0026] When using the present utility model, when it is necessary to carry out heat preservation and protection on the ceiling 3 of the boiler 8, workers need to climb from the ladder 9 to the ceiling 3 and insert the fireproof heat preservation mechanism 6 into the heat preservation sealing box 5 for sealing and heat preservation. When the fireproof coating layer on the fireproof heat preservation board 605 in the heat preservation sealing box 5 is slightly expanded by heat, it is adjusted by the spring 604, so that the fireproof heat preservation board 605 is closely attached to the smoke exhaust pipe 11 and insulates it. Finally, the smoke is exhausted by the main smoke exhaust pipe 12 to prevent the top of the boiler 8 from being contaminated by dust. When it is not necessary to carry out heat preservation in summer, grasp the handle 603 and pull out the fireproof heat preservation mechanism 6 for winter use.

Claims

1. A sealing and heat preservation device for the ceiling of a power plant boiler, characterized in that: The invention comprises a bottom plate (1) and a ceiling (3), wherein a boiler (8) is arranged between the bottom plate (1) and the ceiling (3), a plurality of support columns (2) are arranged around the boiler (8), the top and bottom ends of the support columns (2) are fixedly connected to the ceiling (3) and the bottom plate (1) respectively, a heat-insulating sealed box (5) is arranged on the ceiling (3), a plurality of slots (15) are evenly arranged on the box wall of the heat-insulating sealed box (5), a fire-proof heat-insulating mechanism (6) is inserted into the slots (15), and the fire-proof heat-insulating mechanism (6) comprises a connecting frame (606) and fire-proof heat-insulating plates (605) symmetrically arranged on both sides of the connecting frame (606), A plurality of springs (604) are evenly arranged between the side wall of the connecting frame (606) and the fireproof heat-insulating plate (605); a fixing plate (602) is arranged at one end of the connecting frame (606); a handle (603) is arranged on the fixing plate (602); a smoke exhaust pipe (11) is arranged between adjacent fireproof heat-insulating mechanisms (6); the bottom end of the smoke exhaust pipe (11) is passed through the ceiling (3) and is connected to the smoke exhaust port (16) of the boiler (8); a smoke exhaust main pipe (12) is arranged at the top end of the smoke exhaust pipe (11) for connecting the plurality of smoke exhaust pipes (11); and a ladder (9) is arranged between the bottom plate (1) and the ceiling (3).

2. The sealing and heat-insulating device for the ceiling of a power plant boiler according to claim 1, characterized in that: The card slots (15) are arranged in parallel.

3. The sealing and heat-insulating device for the ceiling of a power plant boiler according to claim 1 or 2, characterized in that: The connecting frame (606) comprises a slot plate (601) and a frame (607) arranged around the slot plate (601), and the fireproof heat-insulating plate (605) is clamped in the frame (607).

4. The sealing and heat-insulating device for the ceiling of a power plant boiler as claimed in claim 3, characterized in that: The frame (607) is clamped in the clamping slot (15).

5. The sealing and heat-insulating device for the ceiling of a power plant boiler as claimed in claim 4, characterized in that: The size of the fixing plate (602) is larger than the size of the card slot (15).

6. The sealing and heat-insulating device for the ceiling of a power plant boiler as claimed in claim 5, characterized in that: A plurality of legs (7) are provided on the boiler (8), and the legs (7) are fixedly connected to the bottom plate (1).

7. The sealing and heat-insulating device for the ceiling of a power plant boiler as claimed in claim 6, characterized in that: A plurality of fixed angle irons (4) are arranged on the heat-insulating sealed box (5), and the fixed angle irons (4) are fixedly connected to the ceiling (3).

8. The sealing and heat-insulating device for the ceiling of a power plant boiler as claimed in claim 7, characterized in that: A guardrail (13) is provided on the ceiling (3).

9. The sealing and heat-insulating device for the ceiling of a power plant boiler as claimed in claim 8, characterized in that: A plurality of connecting plates (10) are arranged around the base plate (1), and the connecting plates (10) are fixedly connected to the floor.

10. The sealing and heat-insulating device for the ceiling of a power plant boiler according to claim 9, characterized in that: A fireproof coating layer is provided on the outer walls of the fireproof insulation board (605) and the smoke exhaust pipe (11).

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