CN210921793U - Vertical tube heat exchange boiler with inclined hearth - Google Patents

Abstract

The utility model discloses a slope furnace standpipe heat transfer boiler, including heat transfer pipe group, water tank, furnace and feed arrangement, furnace is located the water tank below, and open one side has the feed inlet, and with feed arrangement links to each other, and the opposite side is opened there is the deashing door, heat transfer pipe group is the three return stroke heat transfer pipe group that vertical range is constituteed in many heat transfer standpipes in the water tank, first return stroke lower extreme and furnace intercommunication, third return stroke end intercommunication to exhanst gas outlet, be equipped with the maintenance door on the intercommunication cavity wall between each return stroke of heat transfer pipe group. The maintenance door is arranged, so that two ends of a flue gas channel formed by the three-return heat exchange tube set are convenient to open, and the maintenance door on the upper side and the maintenance door on any side below are opened during cleaning and maintenance, so that the cleaning and maintenance work is simple, convenient and efficient.

Description

Vertical tube heat exchange boiler with inclined hearth

Technical Field

The utility model relates to a boiler field, concretely relates to slope furnace standpipe heat transfer boiler.

Background

The heat exchange parts of the existing boiler comprise a transverse pipe structure, an S-shaped structure, a multi-return vertical pipe structure and the like, for example, as shown in a Chinese patent with the publication number of CN104791998A and the patent name of a vertical three-return hot water boiler, a heat exchange pipe group of the existing boiler is a three-return heat exchange straight pipe. After the boiler of the device operates for a period of time, the smoke side of the heat exchange part is easy to be full of ash, especially the bent part of the heat exchange pipe is easier to deposit ash to form ash scale, the boiler is not easy to clear, the maintenance is inconvenient, the heat transfer effect is poor, the average heat efficiency is reduced during the operation of the boiler, and the safe operation of the boiler is also influenced.

The invention content is as follows:

an object of the utility model is to provide a slope furnace standpipe heat transfer boiler to solve the problem that adnexed ash dirt should not be cleared up on the flue gas flue lateral wall, make the boiler be convenient for clear up the maintenance, improve heat transfer efficiency and security.

The technical scheme adopted by the utility model is as follows: a vertical pipe heat exchange boiler with an inclined hearth comprises a heat exchange pipe set, a water tank, a hearth and a feeding device, wherein the hearth is located below the water tank, a feeding hole is formed in one side of the hearth and connected with the feeding device, an ash removal door is arranged on the other side of the hearth, the heat exchange pipe set is a three-return heat exchange pipe set consisting of a plurality of heat exchange vertical pipes vertically arranged in the water tank, the lower end of a first return is communicated with the hearth, the tail end of a third return is communicated to a flue gas outlet, and a maintenance door is arranged on the wall of a communication cavity between the return of the heat exchange pipe.

The utility model has the advantages that: set up the maintenance door on the intercommunication chamber wall between each return stroke of heat exchange tube group, open the maintenance door during clearance maintenance, can clear up ash content and long-pending charcoal for clearance maintenance work is convenient more simple and direct. The cleanness of the flue gas channel further improves the heat exchange efficiency, saves the energy and improves the safety.

Furthermore, the maintenance door is respectively arranged on the top walls of the two communicating cavities above the heat exchange tube group and the side walls on the two sides of the two communicating cavities below the heat exchange tube group.

Further, the maintenance door is rectangular.

Further, the feeding device is a secondary feeding device.

Furthermore, an air cavity and a water jacket are sequentially arranged on one side, close to the feeding device, of the hearth from outside to inside.

Furthermore, an oxygen supplementing pipe is arranged on the inner wall of the hearth along the direction from the feed inlet to the ash removal door, and the oxygen supplementing pipe is provided with an air blower or/and an oxygen generator.

Furthermore, the bottom of the hearth is obliquely arranged from the feeding hole to the ash removal door from high to low.

Furthermore, a flue gas inlet at the lower end of the first return in the heat exchange tube set is arranged at one side close to the ash removal door.

Furthermore, the upper wall of the water tank is provided with a drain hole.

Furthermore, a pressure relief opening is formed in the ash removal door.

Description of the drawings:

fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic diagram of the back structure of the present invention.

Fig. 3 is a side view of the present invention as seen from the side of the ash removal door.

Fig. 4 is a cross-sectional view taken along a-a of fig. 3 according to the present invention.

In the figure, 1, three-pass heat exchange tube sets, 101, a first pass, 102, a third pass, 103, 104, 105, 106, 107 and 108 are maintenance doors, 109, a flue gas outlet, 110, a flue gas inlet, 2, a water tank, 201, an emptying port, 3, a hearth, 301, an oxygen supplementing tube, 302, a feed inlet, 303, an ash removal door, 304 a pressure relief port, 4, a feeding device, 401, a bin feeding device, 402, a hearth feeding device, 403, a bin, 5, an air cavity, 6 and a water jacket.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings and examples.

In an embodiment, as shown in fig. 1 and fig. 2, a vertical tube heat exchange boiler with an inclined furnace chamber comprises a heat exchange tube group 1, a water tank 2, a furnace chamber 3 and a feeding device 4, wherein the furnace chamber 3 is located below the water tank 2, a feeding hole 302 is formed in one side of the furnace chamber and connected to the feeding device 4, an ash removal door 303 is arranged on the other side of the furnace chamber, the heat exchange tube group 1 is a three-pass heat exchange tube group 1 composed of a plurality of heat exchange vertical tubes vertically arranged in the water tank 2, the lower end of a first pass 101 is communicated with the furnace chamber 3, the tail end of the third pass 102 is communicated to a flue gas outlet 109, and maintenance doors 103, 104, 105, 106, 107, 108 are arranged on the wall of a communication. In this embodiment, a communication cavity is formed at each two return-stroke rotation communication positions of the three-return-stroke heat exchange tube set, the lower end of the first return stroke and the upper end of the third return stroke, and the communication cavity and the heat exchange tube set 1 form a complete flue gas channel. The maintenance doors 103, 104, 105, 106, 107 and 108 are arranged, so that two ends of a flue gas channel formed by the three-return heat exchange tube group 1 are convenient to open, the maintenance door at the upper part and the maintenance door at any side at the lower part can be opened during cleaning and maintenance, and the cleaning and maintenance work is simple, convenient and efficient.

In an embodiment, as shown in fig. 1 and fig. 2, the service doors 103, 104, 105, 106, 107, 108 are respectively disposed on the top wall of the two communicating chambers above the heat exchange tube group and on the two side walls of the two communicating chambers below the heat exchange tube group. In this embodiment, the size of the service doors 103, 104, 105, 106, 107, 108 is adapted to the size of the communicating chambers and is as large as possible for easy cleaning. The maintenance doors 103, 104, 105, 106, 107 and 108 can be rectangular, the rectangular maintenance doors are convenient to process, the cost is low, and dead angles are few; the pressure resistance of the door can be better than that of a rectangular containing door, but the cost is higher. The method can be selected according to the needs in the actual production process, and only needs to be convenient for cleaning.

In an embodiment, as shown in fig. 1 and 2, the feeding device 4 is a secondary feeding device, such as the secondary feeding device described in the patent publication No. CN204678369U entitled "a secondary feeding device of a biomass fuel boiler". The fuel enters the bin feeding device 401 through the bin 403, enters the hearth feeding device 402 and then enters the inclined hearth 3. Adopt second grade feed arrangement 4 can 3 tempering problems of effectual solution furnace.

In the embodiment, as shown in fig. 1-3, the side of the furnace chamber 3 close to the feeding device 4 is provided with an air cavity 5 and a water jacket 6 in sequence from outside to inside, and this arrangement can achieve a good heat insulation effect. An oxygen supplementing pipe 301 is arranged on the inner wall of the hearth 3 along the direction from the feeding hole to the ash removal door, and the oxygen supplementing pipe 301 is provided with an air blower or/and an oxygen generator. The blower sends air into the oxygen supplementing pipe 301 through the air cavity 5 and the water jacket 6, so that fuel in the hearth 3 is more fully combusted.

In the embodiment, as shown in fig. 1 and fig. 2, the bottom of the hearth 3 is inclined from the feed port 302 to the ash removal door 303 from high to low, and the inclined hearth 3 can make the fuel automatically slide forward when reaching a certain stacking height in the combustion process, so that the fuel stacking and combustion impermeability of the conventional horizontal hearth is avoided. And the flue gas inlet 110 at the lower end of the first return stroke 101 in the heat exchange tube group 1 is arranged at one side close to the ash removal door 303, so that the flue gas can conveniently enter from the flue gas inlet 110 at the lower end of the first return stroke 101 in a centralized manner, that is, the flue gas inlet 110 is arranged at the innermost end of the hearth 3, thereby avoiding the formation of a dead angle of flue gas flow in the hearth 3 and facilitating the full combustion of fuel.

In an embodiment, as shown in fig. 1 to 3, a drain 201 is disposed on an upper wall of the water tank 2. When the temperature of the water in the water tank 2 is too high, the gas can be naturally discharged from the evacuation port 201 to release the pressure, so that the safety performance of the boiler is higher.

In the embodiment, as shown in fig. 1 to 3, a pressure relief opening 304 is formed on the soot door 303. When the ash and slag removing operation is performed, the pressure relief opening 304 is opened for pressure relief, and then the ash removing door 303 is opened, so that the damage to operators caused by the emission of high-temperature flue gas when the ash removing door 303 is directly opened can be avoided.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. The utility model provides an inclined hearth standpipe heat exchange boiler, includes heat exchange tube group (1), water tank (2), furnace (3) and feed arrangement (4), furnace (3) are located water tank (2) below, and one side is opened has feed inlet (302), and with feed arrangement (4) link to each other, and the opposite side is equipped with deashing door (303), heat exchange tube group (1) is three return stroke heat exchange tube group (1) that many heat transfer standpipes of vertical range in water tank (2) are constituteed, first return stroke (101) lower extreme and furnace (3) intercommunication, third return stroke (102) terminal intercommunication to exhanst gas outlet (109), its characterized in that be equipped with maintenance door (103, 104, 105, 106, 107, 108) on the chamber wall between each return stroke of heat exchange tube group (1).

2. A tilted hearth vertical tube heat exchange boiler according to claim 1, characterized in that said service doors (103, 104, 105, 106, 107, 108) are provided in the top wall of two communicating chambers above said heat exchange tube bank (1) and in the two side walls of two communicating chambers below said heat exchange tube bank (1), respectively.

3. The inclined hearth riser heat exchange boiler according to claim 2, characterized in that said service doors (103, 104, 105, 106, 107, 108) are rectangular.

4. The inclined hearth standpipe heat exchange boiler according to claim 1, wherein said feed means (4) is a secondary feed means.

5. The inclined hearth vertical tube heat exchange boiler according to claim 1, characterized in that the side of the hearth (3) close to the feeding device (4) is provided with an air chamber (5) and a water jacket (6) in sequence from outside to inside.

6. The vertical tube heat exchange boiler with the inclined hearth according to claim 1, characterized in that an oxygen supply pipe (301) is arranged on the inner wall of the hearth (3) along the direction from the feeding hole to the ash removal door, and the oxygen supply pipe (301) is provided with a blower or/and an oxygen generator.

7. The inclined hearth vertical tube heat exchange boiler according to any one of claims 1 to 6, characterized in that the bottom of the hearth (3) is inclined from high to low from the feed port (302) to the ash removal door (303).

8. The inclined hearth vertical tube heat exchange boiler according to claim 7, characterized in that the flue gas inlet (110) at the lower end of the first return (101) in the heat exchange tube bank (1) is arranged at the side close to the ash removal door (303).

9. The inclined hearth standpipe heat exchange boiler as claimed in claim 1, wherein the upper wall of said water tank (2) is provided with a drain (201).

10. The inclined hearth vertical tube heat exchange boiler according to claim 1, characterized in that said ash removal door (303) is provided with a pressure relief vent (304).

Images