CN216448390U

CN216448390U - Low-nitrogen gas boiler

Info

Publication number: CN216448390U
Application number: CN202122145816.1U
Authority: CN
Inventors: 邓华雄; 关爱章; 李云峰
Original assignee: China Tobacco Hubei Industrial LLC
Current assignee: China Tobacco Hubei Industrial LLC
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-05-06
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a low-nitrogen gas boiler, which comprises a boiler body, wherein the interior of the boiler body is separated by a partition plate, a water level chamber is arranged above the partition plate, a combustion chamber is arranged below the partition plate, a smoke distributing pipe penetrates through the water level chamber, the smoke distributing pipe is communicated with the combustion chamber, a low-nitrogen combustor is arranged on the outer side wall of the combustion chamber, a burner nozzle of the low-nitrogen combustor is inserted into the combustion chamber, when the low-nitrogen gas boiler works, gas and air can be combusted in the combustion chamber through the burner nozzle, and the generated high-temperature smoke heats water in the water level chamber through the smoke pipe. As an improvement, the smoke tube is also provided with the shunt tube and the heat conduction tube, and the heating effect and the heat utilization rate of the gas boiler are improved by increasing the contact area of the smoke tube and water; meanwhile, the furnace body is also provided with the cleaning device, the cleaning device is used for cleaning the combustion nozzle by impacting the combustion nozzle, and compared with a method for disassembling and cleaning, the method is simple to operate, short in downtime and greatly improved in working efficiency.

Description

Low-nitrogen gas boiler

Technical Field

The utility model belongs to the technical field of gas-fired boilers, and particularly relates to a low-nitrogen gas-fired boiler.

Background

The gas boiler is an energy conversion device which heats water in the boiler by burning gas in the boiler and utilizes released heat to vaporize the water into high-temperature and high-pressure steam, and the types of the gas boiler comprise a gas water boiler, a gas hot water boiler, a gas steam boiler and the like, wherein the gas hot water boiler is also called a gas heating boiler and a gas bathing boiler, the gas boiler refers to a boiler with gas as the name implies, and the gas boiler is most economical compared with an oil boiler and an electric boiler, so most people select the gas boiler as boiler equipment for steam heating and bathing, but with further enhancement of environmental policies, the content of nitrogen oxides discharged in tail gas of the common gas boiler does not accord with environmental regulations, and the traditional gas boiler is greatly replaced by a low-nitrogen gas boiler.

Although the low-nitrogen gas boiler has been used in our productive life for many years, the existing low-nitrogen gas boiler still has some technical defects, wherein the gas nozzle of the low-nitrogen gas boiler can agglomerate along with the increase of the service time in the use process, further cleaning the low-nitrogen gas boiler regularly, but the cleaning process needs to be finished by dismounting the device, the operation process is complicated, the downtime is long, the working efficiency of the low-nitrogen gas boiler is seriously influenced, if the caking is not cleaned, the service life of the nitrogen gas boiler is reduced, the potential safety hazard is also increased, in addition, the existing low-nitrogen gas boiler mainly heats water by the heat of smoke circulating in the smoke pipe during the use process, however, the smoke flows and the contact area between the smoke pipe and the water of the existing low-nitrogen gas boiler is limited, so the heat utilization rate of the low-nitrogen gas boiler can be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the technical defects of the conventional low-nitrogen gas boiler, and aims to provide the low-nitrogen gas boiler which is expected to solve the technical problem that a gas nozzle of the conventional low-nitrogen gas boiler is inconvenient to remove, and simultaneously further improve the heat utilization rate of the gas boiler.

The utility model is realized by the following steps:

the utility model provides a low nitrogen gas boiler, includes the furnace body, the furnace body is inside to be separated through the baffle, and the baffle top is the combustion chamber below for the water level chamber, run through in the water level chamber and be provided with the branch tobacco pipe, divide the tobacco pipe with the combustion chamber is linked together, be provided with the low nitrogen combustor on the combustion chamber lateral wall, the burner tip of low nitrogen combustor is pegged graft inside the combustion chamber, and during operation, gas and air can burn in the combustion chamber through the burner tip, and the high temperature flue gas of production then heats the water in the water level chamber through the tobacco pipe. The method is characterized in that: the smoke tube is also provided with a shunt tube, the other end without the shunt tube is communicated with the other end without the shunt tube through a heat conduction tube, and high-temperature smoke can be shunted through the shunt tube and the heat conduction tube, so that the flow of the smoke in the water level chamber is increased, the contact area of the smoke tube and water is larger, and the heating effect and the heat utilization rate of the gas-fired boiler are further improved.

Preferably, the diameter of the shunt tubes is smaller than that of the smoke distributing tube, the shunt tubes are inserted into the smoke distributing tube, high-temperature smoke can flow into the shunt tubes through the smoke distributing tube, the free ends of every two adjacent shunt tubes are communicated through a heat conducting tube, and the shunt tubes and the heat conducting tubes are made of heat conducting materials.

Preferably, the low-nitrogen gas boiler further comprises a cleaning device, a cleaning hole for installing the cleaning device is formed in the outer side wall of the boiler body, and the cleaning device can penetrate into the cleaning hole and impact the burner so as to clean agglomerates on the burner.

Preferably, cleaning device includes connecting rod, striking piece and handle, connecting rod and clean hole clearance fit make the connecting rod can slide in clean hole and strike the nozzle to the caking on the nozzle is cleared up, the striking piece sets up the work end at the connecting rod, and the diameter of striking piece is greater than the diameter of connecting rod, cleaning device is still including the handle, the handle sets up the non-work end at the connecting rod, can conveniently operate the connecting rod and clear up the nozzle, the connecting rod with the striking piece all adopts high temperature resistant material.

Preferably, still be provided with the sealing ring on the clean downthehole wall, the sealing ring is high temperature resistant temperature elastic material, sets up in the draw-in groove of clean downthehole wall, through the sealing ring can guarantee the connecting rod with clean hole complex gas tightness.

The utility model has the beneficial effects that: on one hand, the cleaning device is arranged on the boiler, so that the technical problem that the existing low-nitrogen gas boiler gas nozzle is inconvenient to clean is solved, when the burner nozzle of the low-nitrogen burner needs to be cleaned, the gas nozzle does not need to be disassembled, and only the handle needs to be pushed and pulled, so that the connecting rod slides in the cleaning hole and impacts the burner nozzle, the caking at the gas nozzle can be cleaned, the operation is simple, the downtime is short, and the working efficiency of the low-nitrogen gas boiler is greatly improved; on the other hand, the smoke tube is provided with the shunt tubes and the heat conduction tubes, so that the contact area between the smoke tube and water is increased, and the heating effect and the heat utilization rate of the gas-fired boiler are further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of a low-nitrogen gas boiler according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a low-nitrogen gas boiler according to an embodiment of the present invention;

FIG. 3 is a view showing the internal structure of a furnace body in a low-nitrogen gas boiler according to an embodiment of the present invention;

fig. 4 is a schematic working diagram of a connecting rod in a low-nitrogen gas boiler according to an embodiment of the present invention.

In the figure: 1-furnace body, 2-smoke exhaust pipe, 3-condenser, 4-gas pipeline, 5-low nitrogen burner, 6-heat exchanger, 7-blower, 8-filter box, 9-blower pipeline, 10-smoke guide pipe, 11-cleaning hole, 12-caking, 13-sealing ring, 14-smoke distribution pipe, 15-shunt pipe, 16-heat conduction pipe, 17-water level chamber, 18-combustion chamber, 19-partition board, 20-cleaning door, 21-door hole, 22-handle, 23-connecting rod, 24-impact block, 25-hinge and 26-combustion nozzle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the present embodiment provides a low-nitrogen gas boiler, which includes a furnace body 1, a low-nitrogen burner 5, a gas pipeline 4, a blast pipeline 9, a partition plate 19, a smoke guide pipe 10 and a smoke exhaust pipe 2, wherein the low-nitrogen burner 5 is arranged on a side wall of the furnace body 1, the low-nitrogen burner 5 is connected with the furnace body 1 through a bolt 24, the gas pipeline 4 is inserted into one side wall of the low-nitrogen burner 5, and the gas enters the low-nitrogen burner 5 through the gas pipeline 4; the other side wall of the low-nitrogen burner 5 is inserted with a blast pipe 9, the other end of the blast pipe 9 is provided with a blower 7, a filter box 8 is further arranged at the joint of the blower 7 and the blast pipe 9, the blower 7 can increase the flow rate and the air supply quantity of air in the blast pipe 9, the sent air can filter impurities in the air after passing through the filter box 8, and then the filtered air can enter the low-nitrogen burner 5 through the blast pipe 9, so that the gas and the air are fully mixed in the low-nitrogen burner 5.

As shown in fig. 3, a partition plate 19 is welded inside the furnace body 1, the inside of the furnace body 1 is divided into an upper block and a lower block by the partition plate 19, a water level chamber 17 filled with water is arranged above the water level chamber, a combustion chamber 18 used for combustion is arranged below the water level chamber, a burner 26 is further arranged on the low-nitrogen combustor 5, the burner 26 is communicated with the inside of the combustion chamber 18, under the action of the low-nitrogen combustor 5, a mixture of gas and air is sprayed out through the burner 26 and low-nitrogen combustion is performed in the combustion chamber 18, a smoke distributing pipe 14 is arranged in the water level chamber 17, the smoke distributing pipe 14 is communicated with the combustion chamber 18 and penetrates through the whole water level chamber 17, and during operation, high-temperature smoke generated by combustion of gas and air in the combustion chamber 18 heats water in the water level chamber 17 through the smoke distributing pipe 14.

As shown in fig. 1 and fig. 2, a smoke guiding pipe 10 is arranged outside the furnace body 1, one end of the smoke guiding pipe 10 is connected with the smoke outlet end of the smoke dividing pipe 14, the other end of the smoke guiding pipe 10 is connected with the hot end of the heat exchanger 6, the condenser 3 and the smoke discharging pipe 2 in sequence, the cold end of the heat exchanger 6 is connected with the blast pipe 9, the fresh air entering the furnace body 1 is preheated, and the temperature of the smoke discharged from the smoke guiding pipe 10 is reduced, the smoke in the smoke dividing pipe 1 is heated to the water in the water level chamber 17 and then discharged out of the furnace body 1 through the smoke guiding pipe 10, at this time, the temperature of the smoke in the smoke guiding pipe 10 is still high, the heat in the smoke can be partially exchanged through the heat exchanger 6, so that the air in the blast pipe 9 is preheated, then the temperature of the smoke in the smoke guiding pipe 10 can be further reduced through the condenser 3, and finally the smoke is discharged into the atmosphere through the smoke discharging pipe 2, furnace body 1 has still opened the door opening and is provided with clearance door 20 for on the lateral wall of low nitrogen combustor 5, clearance door 20 passes through hinge 25 with furnace body 1 outer wall and is connected, through clearance door 20 can make things convenient for personnel to clean the ashes in the combustion chamber 18.

Because the gas nozzle of the low-nitrogen combustion engine 5 has the phenomenon of agglomeration 12 along with the increase of the use time in the use process of the low-nitrogen gas boiler, the low-nitrogen gas boiler needs to be cleaned regularly, but the cleaning process needs to be realized by dismounting a device, and the operation process is complicated and inconvenient; and because low nitrogen gas boiler mainly heats water through the heat of the intraductal circulation flue gas of chimney in the use, so gas boiler's heating effect and heat utilization ratio can also further improve.

As shown in fig. 1 and 2, in order to facilitate cleaning of the agglomerates 12 on the burner 26, as an improvement, the low-nitrogen gas boiler further comprises a cleaning device, and a cleaning hole 11 for installing the cleaning device is further opened on the outer side wall of the furnace body 1 close to the burner 26. As shown in fig. 4, the cleaning device includes a handle 22, a connecting rod 23 and an impact block 24, the connecting rod 23 has a main structure of a long cylindrical rod, the connecting rod 23 is in clearance fit with the cleaning hole 11, the working end of the connecting rod 23 is welded with the impact block 24, the diameter of the impact block 24 is larger than that of the connecting rod 23, so as to facilitate impact on the burner 26, the non-working end of the connecting rod 23 is welded with the handle 22, the handle 22 is the operating end of the cleaning device, so as to facilitate operation of a worker, during installation, the working end of the connecting rod 23 is inserted into the cleaning hole 11, the handle 22 is exposed outside the furnace body 1, the connecting rod 23 and the impact block 24 are made of high temperature resistant materials, when the burner 26 of the low-nitrogen burner 5 needs to be cleaned, the connecting rod 23 can slide in the cleaning hole 11 and impact on the burner 26 only by pushing and pulling the handle 22, therefore, the caking 12 on the fuel gas nozzle is cleaned, compared with the way of disassembling and cleaning the combustion nozzle 26, the cleaning method of the utility model for the fuel gas nozzle 26 has the advantages of shorter downtime, simple operation and greatly improved working efficiency of the low-nitrogen gas boiler.

In this embodiment, still open the draw-in groove on the clean hole 11 inner wall, install sealing ring 13 in the draw-in groove, sealing ring 13 is high temperature resistant elastic material, sealing ring 13's internal diameter slightly is less than clean hole 11's internal diameter, through sealing ring 13 connecting rod 23 with clean hole 11 complex gas tightness.

As shown in fig. 3, in order to further improve the heating effect and the heat utilization rate of the gas boiler, as an improvement, a plurality of shunt tubes 15 are inserted on two side walls of the smoke-distributing tube 14, the diameter of the shunt tubes 15 is smaller than that of the smoke-distributing tube 14, the free ends of every two adjacent shunt tubes 15 are communicated through a heat-conducting tube 16, the design can lead the high-temperature flue gas generated in the combustion chamber 18 to flow into the shunt pipe 16 through the smoke-distributing pipe 14, flow back into the smoke-distributing pipe 14 through the shunt pipe 15 after passing through the heat-conducting pipe 16, the high-temperature flue gas can be divided by the dividing pipe 15 and the heat conducting pipe 16, the flow of the high-temperature flue gas in the water level chamber is effectively increased, the contact area between the flue pipe and water is larger, meanwhile, the shunt pipe 15 and the heat conduction pipe 16 are made of materials with good heat conductivity, so that the heating effect and the heat utilization rate of the gas-fired boiler are further improved.

The specific implementation process of this embodiment is as follows:

firstly, gas enters a low-nitrogen burner 5 through a gas pipeline 4, simultaneously, a blower 7 sucks air, the air is filtered by a filter box 8 and then is sent to the low-nitrogen burner 5 through a blast pipeline 9, the gas and the air are fully mixed, then the mixture of the gas and the air is enabled to realize low-nitrogen combustion in a combustion chamber 18 through a burner 26 under the action of the low-nitrogen burner 5, high-temperature flue gas generated in the combustion chamber 18 flows into a smoke distributing pipe 14 and heats water in a water level chamber 17, meanwhile, the high-temperature flue gas can be distributed through a distributing pipe 15 and a heat conducting pipe 16, so that the contact area between the smoke distributing pipe 14 and the water is increased, the heating effect and the heat utilization rate of the gas boiler are improved, then the flue gas in the smoke distributing pipe 14 is discharged out of the boiler body 1 through the smoke conducting pipe 10 and the heat in the flue gas is partially exchanged through a heat exchanger 6, and the air in the blast pipeline 9 is preheated, the flue gas will then continue to be led out through the smoke guiding pipe 10, and when passing through the condenser 3, the residual temperature of the flue gas in the smoke guiding pipe 10 can be further reduced, and finally the flue gas will be discharged into the atmosphere via the smoke discharging pipe 2. When the burner 26 of the low-nitrogen burner 5 needs to be cleaned, the caking 12 on the burner can be cleaned only by pushing and pulling the handle 22 to enable the striking block 24 on the working end of the connecting rod 23 to strike the burner 26, and compared with the process of disassembling and cleaning the burner 26, the cleaning method of the utility model for the burner 26 has the advantages of shorter downtime, simple operation and greatly improved working efficiency of the low-nitrogen gas boiler.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A low-nitrogen gas boiler comprises a boiler body, wherein the interior of the boiler body is separated by a partition plate, a water level chamber is arranged above the partition plate, a combustion chamber is arranged below the partition plate, a plurality of smoke distributing pipes penetrate through the water level chamber, one ends of the smoke distributing pipes are communicated with the combustion chamber, the other ends of the smoke distributing pipes are connected with smoke guiding pipes, smoke is discharged through the smoke guiding pipes, a low-nitrogen burner is arranged on the outer side wall of the combustion chamber, a burner nozzle of the low-nitrogen burner is inserted into the combustion chamber, when the low-nitrogen boiler works, gas and air can be combusted in the combustion chamber through the burner nozzle, and generated high-temperature smoke heats water in the water level chamber through the smoke pipes; the method is characterized in that: the water level chamber is also provided with a plurality of shunt tubes, the other ends of the adjacent shunt tubes are communicated through the heat conduction pipes, and high-temperature flue gas can be shunted through the shunt tubes and the heat conduction pipes, so that the flow of the flue gas in the water level chamber is increased, and the contact area between the flue tube and water is larger.

2. A low-nitrogen gas boiler as set forth in claim 1, wherein: the diameter of the shunt tubes is smaller than that of the smoke distributing tube, the shunt tubes are inserted into the smoke distributing tube, and the free ends of every two adjacent shunt tubes are communicated through a heat conducting tube.

3. A low-nitrogen gas boiler as set forth in claim 2, wherein: the shunt tubes and the heat conduction tubes are made of heat conduction materials.

4. A low-nitrogen gas boiler as set forth in claim 1, wherein: the low-nitrogen gas boiler further comprises a cleaning device, a cleaning hole used for installing the cleaning device is formed in the outer side wall of the boiler body, the cleaning device can penetrate into the cleaning hole and impact the burner nozzle, and therefore caking on the burner nozzle is cleaned.

5. A low-nitrogen gas boiler in accordance with claim 4, wherein: cleaning device includes the connecting rod, connecting rod and clean hole clearance fit make the connecting rod can slide and strike the burner in clean hole to lump on the burner is cleared up.

6. A low-nitrogen gas boiler as set forth in claim 5, wherein: the cleaning device further comprises an impact block, the impact block is arranged at the working end of the connecting rod, and the diameter of the impact block is larger than that of the connecting rod.

7. A low-nitrogen gas boiler as claimed in claim 4 or 5, wherein: the cleaning device further comprises a handle, the handle is arranged at the non-working end of the connecting rod, and the connecting rod can be conveniently operated to clean the fuel nozzle.

8. A low-nitrogen gas boiler in accordance with claim 6, wherein: the connecting rod and the impact block are made of high-temperature-resistant materials.

9. A low-nitrogen gas boiler as set forth in claim 5, wherein: still be provided with the sealing ring on the clean downthehole wall, the sealing ring is high temperature resistant temperature elastic material, sets up in the draw-in groove of clean downthehole wall, through the sealing ring can guarantee the connecting rod with clean hole complex gas tightness.