CN204756872U - A new type of energy-saving and environment-friendly boiler - Google Patents

Abstract

The utility model discloses a novel energy-concerving and environment-protective boiler, including furnace body, inlet tube, outlet pipe and waste heat recovery device, the both ends of furnace body are equipped with feed inlet and high temperature exhaust gas discharge pipe respectively, and the furnace body wall of furnace body is hollow intermediate layer, and the furnace body inner wall has welded the conducting strip, and waste heat recovery device is connected to high temperature exhaust gas discharge pipe one end, and waste heat recovery device includes heat sink, and heat sink's top contact sets up the steam pocket, connects low-temperature water import pipe and high-pressure steam outlet pipe on the steam pocket. The utility model can use coal as fuel, and other combustible biomass raw materials, crop straws, firewood and the like as fuel, and has wide fuel range, low cost and high heat efficiency; the flue gas of boiler gets into from high temperature waste gas import pipe, and the heating device by low temperature department makes the water heating in the one-level zone of heating through the heat exchange, produces steam, and steam gets into and reheats in the second grade zone of heating to the steam pressure that produces is high, and application range becomes wide.

Description

A new type of energy-saving and environment-friendly boiler

technical field

The utility model relates to a boiler, in particular to a novel energy-saving and environment-friendly boiler.

Background technique

At present, firewood and coal are mainly used as combustion medium for heating in rural areas of my country. Most of the traditional boilers use coal as heating fuel. However, with the increase of people's living costs, the price of coal rises, the economic burden increases, and the heating cost increases. Traditional boilers are not suitable for the vast rural areas. However, there is a large amount of firewood in the countryside. Using these firewood for heating can save the cost of purchasing coal and other fuels. At the same time, using coal also has safety problems such as gas poisoning. In addition, the current heating boiler also has the defect of a single heating method. Moreover, the existing flue gas waste heat recovery system mainly includes a heat absorbing device. One end of the heat absorbing device is connected to a high-temperature exhaust gas inlet pipe, and the other end is connected to a low-temperature exhaust gas outlet pipe. The inlet pipe and the high-pressure steam outlet pipe, the low-temperature water inlet pipe and the low-temperature exhaust gas outlet pipe are arranged on the same side, the high-pressure steam outlet pipe and the high-temperature exhaust gas inlet pipe are arranged on the same side, and the high-pressure steam outlet pipe is connected with a check valve. The low-temperature water enters the steam drum from the low-temperature water inlet pipe, and the boiler flue gas enters from the high-temperature exhaust gas inlet pipe. The water in the steam drum is heated by the heating device through heat exchange to generate steam pressure, which enters the lower steam drum from the high-pressure steam outlet pipe. A manufacturing process is used. The steam pressure generated by this system is low, which cannot meet the requirements of some manufacturing processes, so the scope of use is small.

Utility model content

The purpose of this utility model is to provide a new type of energy-saving and environment-friendly boiler to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A new type of energy-saving and environmentally friendly boiler, including a furnace body, water inlet pipe, water outlet pipe and waste heat recovery device. The two ends of the furnace body are respectively equipped with a feed inlet and a high-temperature exhaust gas discharge pipe. The furnace body wall of the furnace body is a hollow interlayer. The wall is welded with heat conducting fins, the furnace body is connected to the water inlet pipe and the water outlet pipe respectively, the bottom of the furnace body has an air inlet, and the upper part of the furnace body has a dust removal cover, which is disassembled and connected to the furnace body. A furnace body and a second furnace body, the cross-sectional area of the first furnace body is larger than that of the second furnace body, one end of the first furnace body is provided with a feed inlet, and one end of the second furnace body is provided with a high-temperature exhaust gas discharge The other end of the high-temperature waste gas discharge pipe is connected to a waste heat recovery device, and the waste heat recovery device includes a heat absorbing device. One end of the heat absorbing device is connected to a high-temperature waste gas discharge pipe, and the other end is connected to a low-temperature waste gas outlet pipe. The steam drum is connected to the low-temperature water inlet pipe and the high-pressure steam outlet pipe. The low-temperature water inlet pipe and the low-temperature exhaust gas outlet pipe are arranged on the same side, the high-pressure steam outlet pipe and the high-temperature exhaust gas outlet pipe are arranged on the same side, and the high-pressure steam outlet pipe is connected to the Check valve, the steam drum is connected with the vertically arranged first partition, the first partition is arranged between the low-temperature water inlet pipe and the high-pressure steam outlet pipe of the steam drum, and the first partition divides the heating area of the steam drum into a The primary heating zone and the secondary heating zone, the primary heating zone is between the first partition and the low-temperature water inlet pipe, and the secondary heating zone is between the first partition and the high-pressure steam outlet pipe.

As a further solution of the utility model: the steam drum is also connected with a vertically arranged second baffle, and the second baffle is arranged between the high-pressure steam outlet pipe of the steam drum and the first baffle.

As a further solution of the utility model: there is a secondary heating zone between the first baffle and the second baffle, and a tertiary heating zone between the second baffle and the high-pressure steam outlet pipe.

Compared with the prior art, the beneficial effect of the utility model is: the utility model can use coal as fuel, and can also use other combustible biomass raw materials, crop straw, firewood, etc. as fuel, with wide range of fuels and low cost , high thermal efficiency, if coal is not used as raw material, it can effectively avoid gas poisoning and improve safety; according to the characteristics of high temperature at the discharge pipe of high temperature exhaust gas and low temperature at the outlet of low temperature exhaust gas, low temperature water enters from the low temperature water inlet pipe In the primary heating area of the steam drum, the boiler flue gas enters from the high-temperature exhaust gas inlet pipe, and the heating device at the low temperature heats the water in the primary heating area through heat exchange to generate steam, which enters the secondary heating area After reheating, the steam pressure generated is high, which meets the requirements of the manufacturing process, and the application range becomes wider.

Description of drawings

Figure 1 is a schematic structural diagram of a new type of energy-saving and environmentally friendly boiler;

Figure 2 is the left view of the new energy-saving and environment-friendly boiler;

Fig. 3 is a schematic cross-sectional view of the furnace body wall in the new energy-saving and environment-friendly boiler;

In the figure: 1-furnace body, 2-feed inlet, 3-water outlet pipe, 4-water inlet pipe, 5-second furnace body, 6-ash cleaning cover, 7-ash cleaning room, 8-air inlet, 9- The first furnace body, 10-high temperature exhaust gas discharge pipe, 11-heat conduction plate, 12-high pressure steam outlet pipe, 13-check valve, 14-tertiary heating zone, 15-second partition, 16-secondary heating zone , 17-steam drum, 18-first partition, 19-first-level heating zone, 20-low temperature water inlet pipe, 21-low temperature waste gas outlet pipe, 22-heat absorbing device, 23-furnace outer wall, 24-water, 25 - Furnace inner wall.

Detailed ways

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Figure 1-3, a new type of energy-saving and environmentally friendly boiler, including a furnace body 1, a water inlet pipe 4, an outlet pipe 3 and a waste heat recovery device. The two ends of the furnace body 1 are respectively equipped with a feed inlet 2 and a high-temperature exhaust gas discharge pipe 10. The furnace body wall of the furnace body 1 is a hollow interlayer, and the inner wall of the furnace body is welded with a heat conducting sheet 11. The furnace body 1 is connected to the water inlet pipe 4 and the water outlet pipe 3 respectively. There is an air inlet 8 at the bottom of the furnace body 1, and a The soot removal cover 6 is disassembled and connected with the furnace body 1 .

When in use, first open the feed port 2, which is installed at one end of the first furnace body 9, and is disassembled and connected with the first furnace body 9. In order to enable the fuel to be smoothly filled into the furnace, the feed port 2 can be designed It is a larger size and is closed by a lock. Then various combustible fuels, such as crop rhizomes such as straw and bean stems, etc., are packed into the first furnace body 9 and ignited, and the fuel is burned in the first furnace body 9, and part of the heat burned in the first furnace body 9 The waste heat recovery device includes a heat absorbing device 22, one end of the heat absorbing device 22 is connected to the high temperature waste gas discharge pipe 10, and the other end is connected to the low temperature waste gas outlet pipe. 21. A steam drum 17 is placed in contact with the upper part of the heat absorbing device 22. The steam drum 17 is connected with a low-temperature water inlet pipe 20 and a high-pressure steam outlet pipe 12. The low-temperature water inlet pipe 20 and the low-temperature waste gas outlet pipe 21 are arranged on the same side, and the high-pressure steam outlet The pipe 12 is arranged on the same side as the high-temperature exhaust gas discharge pipe 10 , and a check valve 13 is connected to the high-pressure steam outlet pipe 12 . The first dividing plate 18 and the second dividing plate 15 that are vertically arranged are connected in the steam drum 17, the first dividing plate 18 is arranged between the low-temperature water inlet pipe 20 and the high-pressure steam outlet pipe 12 of the steam drum, and the second dividing plate 15 Set between the high-pressure steam outlet pipe 12 of the steam drum and the first partition 18, the first partition 18 and the second partition 15 divide the heating zone of the steam drum 17 into a primary heating zone 19, a secondary heating zone 16, Tertiary heating zone 14, between the first dividing plate 18 and the low-temperature water inlet pipe 20 is the primary heating zone 19, between the first dividing plate 18 and the second dividing plate 15 is the secondary heating zone 16, the second dividing plate Between 15 and the high-pressure steam outlet pipe 12 is a tertiary heating zone 14.

The air in the furnace body 1 enters the furnace body 1 through the air inlet 8, and the ash after fuel combustion in the first furnace body 9 falls into the ash cleaning chamber 7 to ensure that there is enough combustion space in the first furnace body 9, while the second furnace body The dust in the body 5 can clean up its dust by the dust removal cover 6 .

The top and both sides of the first furnace body are formed as Fig. 3, and the outermost layer is the furnace outer wall 23, and the innermost layer is the heat conduction sheet 11, which is welded on the furnace inner wall 25, and is water 24 in the interlayer. The thickness of the furnace outer wall 23 is preferably 0.2 cm, the thickness of the furnace inner wall 25 is preferably 0.2 cm, and the intermediate interlayer is preferably 0.6 cm.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation, and within the knowledge of those of ordinary skill in the art, it can also be made without departing from the purpose of this patent. Variations.

Claims (3)

1. A new type of energy-saving and environmentally friendly boiler, including a furnace body, water inlet pipe, water outlet pipe and waste heat recovery device, is characterized in that, the two ends of the furnace body are respectively provided with a feed inlet and a high-temperature exhaust gas discharge pipe, and the furnace body wall of the furnace body It is a hollow interlayer, and the inner wall of the furnace is welded with heat-conducting fins. The furnace body is connected to the water inlet pipe and the water outlet pipe respectively. There is an air inlet at the bottom of the furnace body. The first furnace body and the second furnace body connected through the two parts, the cross-sectional area of the first furnace body is larger than the cross-sectional area of the second furnace body, one end of the first furnace body is provided with a feed port, and the second furnace body One end is provided with a high-temperature exhaust gas discharge pipe, and the other end of the high-temperature exhaust gas discharge pipe is connected to a waste heat recovery device. The waste heat recovery device includes a heat absorbing device. A steam drum is placed in contact with the upper part of the device, and the steam drum is connected with a low-temperature water inlet pipe and a high-pressure steam outlet pipe. The high-pressure steam outlet pipe is connected with a check valve, and the steam drum is connected with a vertically arranged first baffle, and the first baffle is arranged between the low-temperature water inlet pipe of the steam drum and the high-pressure steam outlet pipe, and the first baffle keeps the steam The heating area of the bag is divided into a primary heating area and a secondary heating area, and the primary heating area is between the first partition and the low-temperature water inlet pipe. 2. The new energy-saving and environment-friendly boiler according to claim 1, characterized in that, the steam drum is also connected with a vertically arranged second baffle, and the second baffle is arranged between the high-pressure steam outlet pipe of the steam drum and the first baffle. between partitions, 3. The new energy-saving and environment-friendly boiler according to claim 2, characterized in that there is a secondary heating zone between the first partition and the second partition, and a tertiary heating zone between the second partition and the high-pressure steam outlet pipe district.