CN202204143U - Vertical water-fire tube energy-saving environment-friendly boiler - Google Patents

Abstract

The utility model provides a vertical water-fire tube energy-saving and environmentally friendly boiler, the structural features of which are: the curved water pipes in the furnace cylinder are evenly arranged in a circle in the furnace cylinder, the straight end is connected to the convex furnace top, and the curved end is evenly arranged and connected to the lower part of the furnace cylinder along the circumferential wall of the cylinder; the curved smoke pipes are evenly arranged in a circle outside the furnace cylinder, the straight end is connected to the bottom of the U-shaped lower foot ring, and the curved end is connected to the upper wall of the furnace cylinder; the dust removal base is connected to the U-shaped lower foot ring. The advantages of this boiler are: it can increase the furnace temperature, promote the full combustion of fuel in the furnace, the high-temperature flue gas outlet of the combustion is placed at the lowest position of the boiler water temperature, and the arranged heating area is all below the boiler safety water level line, which improves the thermal efficiency and life of the boiler; at the same time, secondary dust removal is set. This boiler design is suitable for fuels: firewood, rice husks, hawthorns and biomass fuels.

Description

Vertical water fire tube energy saving and environmental protection boiler

technical field

The utility model relates to a boiler, in particular to a vertical water-fire tube energy-saving and environment-friendly boiler.

Background technique

At present, the main structural types of existing vertical fast-loading boilers in the society are vertical fire tube boilers and vertical water tube boilers. The structural form of the vertical fire tube boiler is mainly composed of the boiler shell, the furnace liner and the smoke tube welded on the furnace liner head and the pot shell head; the structural form of the vertical water tube boiler is mainly composed of the pot shell, the furnace liner, the cupola And the horizontal water pipe (or curved water pipe) welded on the furnace. The combustion and heat transfer methods of the above two structures are as follows: the fuel is put into combustion from the feeding hole, the high-temperature flame and flue gas exchange heat on the furnace and horizontal water pipes (or curved water pipes), and then flow through the cupola (or smoke pipe) to the atmosphere. Problems existing in the boiler: low furnace temperature, insufficient combustion, high exhaust gas temperature, low thermal efficiency, and large environmental pollution. The cupola or smoke tube of the boiler with this structure is exposed to the water surface for a long time, the temperature is high, and it is prone to cracks and corrosion. Generally, the cupola or smoke pipe will be damaged after less than 2 years of use.

Utility model content

The purpose of the utility model is to provide a vertical water-fire tube energy-saving and environment-friendly boiler with sufficient fuel combustion, which can improve the thermal efficiency and service life of the boiler, and can reduce pollution by secondary dust removal.

The technical scheme that the utility model takes:

A vertical water-fire tube energy-saving and environmentally friendly boiler, mainly composed of a pot shell body, a furnace body, a convex head of the pot shell, a convex furnace top, a curved water pipe, a curved smoke pipe and a base, and its characteristics are:

The curved water pipe 4 in the furnace cylinder 2 is uniformly arranged on the circumference of the furnace cylinder 2, the straight end is connected with the convex furnace roof 5, and the curved end is evenly connected with the lower part of the furnace cylinder 2 along the cylinder wall. arrangement connected;

The curved smoke pipe 3 is evenly arranged on the outside of the furnace cylinder 2, that is, the inside of the pot shell cylinder 6. The straight end is connected to the bottom of the U-shaped foot ring 1, and the curved end is connected to the upper wall of the furnace cylinder 2. ;

The dust removal base 8 is connected with the U-shaped foot ring 1 .

Advantages or positive effects of this application

The main advantages of this energy-saving and environmentally friendly boiler are: to improve the existing deficiencies and shortcomings of the existing vertical fast-installation boilers, to increase the furnace temperature, to promote the fuel to be fully burned in the furnace, and to burn high-temperature flue gas outlets (convection curved smoke pipe smoke) Gas outlet) is placed at the position where the boiler water temperature is the lowest, and the heating area arranged is all below the safe water level line of the boiler to improve the thermal efficiency and life of the boiler; at the same time, a primary dust removal is set on the boiler base, and a secondary dust removal is set at the bottom of the chimney. Due to the full combustion of the fuel, there is no smoke coming out of the chimney outlet when the boiler is working normally, which actively responds to the relevant national laws, regulations, safety technical specifications and corresponding standards for energy conservation and environmental protection.

Applicable fuels for this boiler design: firewood, chaff, succulent and biomass fuel.

Description of drawings

Figure 1 is the front view of the boiler structure.

Fig. 2 is a left side view of Fig. 1 .

Detailed ways

The design of this energy-saving and environment-friendly boiler follows the "Steam Boiler Safety Technical Supervision Regulations", "Hot Water Boiler Safety Technical Supervision Regulations" and the current corresponding national regulations and standards.

The structure of the boiler is a vertical water-fire tube shell boiler. The boiler is mainly composed of a pot shell cylinder, a furnace cylinder body, a convex head of the pot shell, a convex furnace top, a foot ring, a curved water pipe, a curved smoke pipe and a base. constitute. The interconnection relationship is as follows: the inner and outer rings of the U-shaped foot ring 1 are respectively connected with the furnace cylinder 2 and the pot shell cylinder 6 by butt welding; the furnace cylinder 2 and the pot shell cylinder 6 are respectively connected with the convex The furnace top 5 and the convex head 7 of the pot shell are connected by butt welding; the two ends of the curved water pipe 4 are respectively connected with the curved water pipe holes on the furnace cylinder body 2 and the convex furnace top 5 by cutting-in corner joints The two ends of the curved smoke pipe 3 are respectively connected with the furnace tube body 2 and the curved smoke pipe hole set on the U-shaped lower foot ring 1 by cutting-in fillet welding; the inner and outer ends of the feeding hole 10 are respectively connected with the The feeding orifice opened on the furnace cylinder body 2 and the boiler shell cylinder body 6 is connected in the form of skewer fillet welding; The corresponding openings opened on the top are connected in the form of cutting-in fillet welding; It is connected in the form of cutting-in corner welding; the corresponding hole opened on the bottom of the bottom of the U-shaped foot ring 1 is connected with the sewage device socket 23; the inner and outer rings of the dust removal base 8 are respectively connected to the U-shaped The inner and outer rings of the lower foot ring 1 are connected in the form of lap joint welding. The main function of the base is to support the weight of the pot and concentrate the smoke and dust flowing out of the curved smoke pipe 3, and play a role in dust removal. The base is also equipped with air inlet doors, The smoke outlet and ash cleaning hole ensure the oxygen required for fuel combustion and the cleaning of the bent smoke pipe ash and the connection of the flue. The upper part of the inner ring of the base is also equipped with a grate support ring 25 to meet the installation of the fixed grate 26. The two ends of the flue 14 are respectively connected with the smoke outlet on the base 8 and the smoke inlet of the dust removal chamber 15; the chimney 16 is connected with the smoke outlet of the dust removal chamber 15, and the chimney discharges the low-temperature flue gas to the atmosphere. The above connections form a well-sealed pot and furnace, called a boiler. The main function of the remote thermometer 22 is to monitor the flue gas exhaust temperature when the boiler is in normal operation, and the boiler foundation 24 mainly supports the weight of the boiler.

Its brief working process is: water with a certain pressure enters the boiler from the water inlet device (the water inlet device includes a water pump, a flow meter, a water inlet valve, and a check valve). Feeding hole door, fuel is put in from the feeding hole 10 and ignited, and the hole door is closed when the combustion is normal, and the fuel burns on the grate 26 to generate high-temperature flame smoke, which is connected with the furnace cylinder body 2 and the furnace cylinder body 2. After the curved water pipe 4 has fully radiated heat exchange and water supply, the high-temperature flue gas flows from the inlet of the curved smoke pipe 3 through the curved smoke pipe 3 for convective heat exchange water supply, and the flue gas is concentrated from the outlet of the curved smoke pipe to the smoke chamber of the dust removal base 8 of the boiler for the second stage. First gravity sedimentation dust removal, after the first gravity sedimentation dust removal, the low-temperature flue gas flows through the horizontal flue 14 into the dust removal chamber 15 for the second gravity sedimentation dust removal, and then is discharged into the atmosphere through the chimney. When the hot water boiler is working, because the water contained in the boiler continuously absorbs heat, when the water reaches the specified pressure and temperature, the heat supply valve is opened, and the circulation pump on the water inlet device is started to supply heat to the heat users. When the steam boiler is working, because the water contained in the boiler is continuously absorbing heat, when the water saturation temperature is reached, the water in the boiler starts to vaporize and generate high-temperature steam. When the steam reaches the working pressure of the boiler, open the heating valve 20 Steam households supply steam. Therefore, the boiler can be designed as a vertical water-fire tube energy-saving and environment-friendly hot water boiler and a vertical water-fire tube energy-saving and environment-friendly steam boiler. The effect of hand hole 9 and manhole 11 is mainly to make inspection, maintenance and cleaning dirt in the boiler operation process, and the effect of blowdown device 23 is mainly to facilitate the blowdown in the boiler operation process.

Claims (1)

1. A vertical water-fire tube energy-saving and environmentally friendly boiler, mainly composed of a pot shell cylinder (6), a furnace cylinder body (2), a convex head of the pot shell (7), a convex furnace top (5), a curved Water pipe (4), bent smoke pipe (3) and base (8) are formed, and it is characterized in that: The curved water pipes (4) in the furnace cylinder (2) are evenly arranged on the circumference of the furnace cylinder (2), the straight end is connected with the convex furnace roof (5), and the curved end is connected with the furnace cylinder The lower part of the body (2) is evenly arranged and connected along the peripheral wall of the cylinder; The curved smoke pipe (3) is evenly arranged on the outside of the furnace cylinder (2), that is, the inside of the pot shell cylinder (6), the straight end is connected to the bottom of the U-shaped foot ring (1), and the curved end is connected to the furnace cylinder The cylinder (2) upper cylinder wall is connected; The dust removal base (8) is connected with the U-shaped foot ring (1).

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