CN-224215308-U - Hydrogen-burning gas backflow stable combustion premixing condensing boiler

CN224215308UCN 224215308 UCN224215308 UCN 224215308UCN-224215308-U

Abstract

The utility model discloses a hydrogen-burning gas backflow stable combustion premixed condensing boiler, which comprises a lower box body and an upper box body, wherein a water cooling wall is communicated between the lower box body and the upper box body, a plurality of water cooling pipes I are arranged in an air inlet, a flow guiding frame body is fixedly connected to the outside of each water cooling pipe I, a plurality of water cooling pipes II are arranged at the downstream of each water cooling pipe I, each water cooling pipe II is positioned at the downstream of a first gas channel, a second gas channel is formed between each water cooling pipe II and an adjacent flow guiding frame body, a third gas channel is formed between each two adjacent water cooling pipes II, a plurality of water cooling pipes III are arranged at the downstream of each water cooling pipe II, a plurality of water cooling pipes IV are arranged at the downstream of each water cooling pipe III, ribs are fixedly connected between each water cooling pipe II and each water cooling pipe III, and a water cooling pipe group I, a water cooling pipe group II and a water cooling smoke blocking wall are sequentially arranged in a tapered hearth from the upstream to the downstream. The utility model ensures that the flame burns more stably, plays a role in reducing the temperature of high-temperature flame, prevents tempering and reduces the generation of nitrogen oxides.

Inventors

SUN YUJIAN
SONG RUIJIAN
SUN DONGGANG
LIU YUNLEI
LIU DAYI

Assignees

哈尔滨四方锅炉安装有限公司

Dates

Publication Date: 20260508
Application Date: 20250613

Claims (3)

1. A hydrogen-fired gas reflux stable combustion premix condensing boiler, comprising: The lower box body (2) and the upper box body (10), a water cooling wall (1) is communicated between the lower box body (2) and the upper box body (10), a tapered hearth is arranged inside the water cooling wall (1), an air inlet and a smoke outlet (4) are arranged on the water cooling wall (1), a plurality of water cooling pipes I (23) are arranged in the air inlet, a diversion frame body is fixedly connected outside the water cooling pipes I (23), A first gas channel is formed between two adjacent diversion frames, and a heat exchange mechanism is arranged in the upper box body (10); A plurality of water cooling pipes II (24) are arranged at the downstream of the water cooling pipes I (23), the water cooling pipes II (24) are positioned at the downstream of the first gas channel, a second gas channel is formed between the water cooling pipes II (24) and the adjacent diversion frame bodies, a third gas channel is formed between the two adjacent water cooling pipes II (24), the first gas channel is communicated with the second gas channel, and the second gas channel is communicated with the third gas channel; A plurality of water cooling pipes III (19) are arranged at the downstream of the water cooling pipes II (24), a plurality of water cooling pipes IV (20) are arranged at the downstream of the water cooling pipes III (19), ribs (13) are fixedly connected between the water cooling pipes II (24) and the water cooling pipes III (19), ribs (13) are fixedly connected between the water cooling pipes III (19) and the water cooling pipes IV (20), independent combustion spaces are formed between the ribs (13) on two adjacent water cooling pipes III (19), and the third gas channel is communicated with the independent combustion spaces; The water-cooling tube group I (15), the water-cooling tube group II (17) and the water-cooling smoke baffle wall (3) are sequentially arranged in the tapered hearth from upstream to downstream, the water-cooling tube group I (15) is positioned at the downstream of the water-cooling tube IV (20), two ends of the water-cooling tube group I (15) are respectively communicated with the upper box body (10) and the lower box body (2), two ends of the water-cooling tube group II (17) are respectively communicated with the upper box body (10) and the lower box body (2), and two ends of the water-cooling smoke baffle wall (3) are respectively communicated with the upper box body (10) and the lower box body (2); The utility model discloses a water supply device, including box (10) and lower box, box (2) on go up box (10) and still communicate left side downcomer (11) and right side downcomer (12) between box (2), left side downcomer (11) both ends respectively with lower box (2) with go up box (10) intercommunication, right side downcomer (12) both ends respectively with lower box (2) with go up box (10) intercommunication, lower box (2) intercommunication has feed pipe (14).
2. The hydrogen-gas backflow stable combustion premixed condensing boiler according to claim 1, wherein the flow guide frame body comprises a sealing plate (21), a V-shaped plate (25) and two flow guide plates (22), the flow guide plates (22) are fixedly connected between the sealing plate (21) and the V-shaped plate (25), the sealing plate (21) is located at the upstream, the sealing plate (21), the V-shaped plate (25) and the flow guide plates (22) are fixedly connected to the water cooling pipe I (23), the first gas channel is formed between two adjacent flow guide plates (22), and the second gas channel is formed between the water cooling pipe II and the V-shaped plate (25).
3. The hydrogen-gas backflow stable combustion premixed condensing boiler according to claim 1, wherein the heat exchange mechanism comprises a plurality of condensing pipes (7), a water collecting chamber (5) and a water outlet chamber (9) are respectively arranged at two ends of the upper box body (10), the water collecting chamber (5) and the water outlet chamber (9) are communicated through the plurality of condensing pipes (7), the water collecting chamber (5) is communicated with a water inlet pipe (6), and the water outlet chamber (9) is communicated with a water outlet pipe (8).

Description

Hydrogen-burning gas backflow stable combustion premixing condensing boiler Technical Field The utility model relates to the technical field of boilers, in particular to a hydrogen-burning gas backflow stable combustion premixing condensing boiler. Background With the global importance of environmental protection and sustainable development and the increasing of the restrictions of traditional fossil energy boilers, hydrogen-fired gas boilers are receiving more and more attention as a clean and low-carbon alternative, and are becoming the focus of product development in the boiler industry. Hydrogen and natural gas are used as important clean energy sources, and the characteristics of green, low carbon, cleaning and the like are achieved. The existing gas-fired boiler has the defects of unstable combustion surface, insufficient combustion, high emission concentration of nitrogen oxides, low hydrogen density, easiness in deposition in a hearth, poor water circulation, low thermal efficiency of the boiler and the like. Therefore, the hydrogen-burning gas backflow stable combustion premixed condensing boiler is provided to solve the problems. Disclosure of utility model The utility model aims to provide a hydrogen-burning gas backflow stable combustion premix condensing boiler, which solves the problems in the prior art, can form a high-speed low-pressure stable combustion surface, ensures full combustion, realizes low-nitrogen combustion, reduces nitrogen oxide emission, and improves the thermal efficiency of the boiler. In order to achieve the purpose, the utility model provides the scheme that the hydrogen-burning gas backflow stable combustion premix condensing boiler comprises: the device comprises a lower box body and an upper box body, wherein a water cooling wall is communicated between the lower box body and the upper box body, a tapered hearth is arranged inside the water cooling wall, an air inlet and a smoke outlet are arranged on the water cooling wall, a plurality of water cooling pipes I are arranged in the air inlet, a diversion frame body is fixedly connected outside the water cooling pipes I, a first gas channel is formed between two adjacent diversion frame bodies, and a heat exchange mechanism is arranged in the upper box body; A plurality of water cooling pipes II are arranged at the downstream of the water cooling pipe I, the water cooling pipes II are positioned at the downstream of the first gas channel, a second gas channel is formed between the water cooling pipes II and the adjacent diversion frame bodies, a third gas channel is formed between the two adjacent water cooling pipes II, the first gas channel is communicated with the second gas channel, and the second gas channel is communicated with the third gas channel; The downstream of the water cooling pipe II is provided with a plurality of water cooling pipes III, the downstream of the water cooling pipe III is provided with a plurality of water cooling pipes IV, ribs are fixedly connected between the water cooling pipe II and the water cooling pipes III, ribs are fixedly connected between the water cooling pipes III and the water cooling pipes IV, independent combustion spaces are formed between the ribs on two adjacent water cooling pipes III, and the third gas channel is communicated with the independent combustion spaces; The water-cooling tube group I, the water-cooling tube group II and the water-cooling smoke blocking wall are sequentially arranged in the tapered hearth from the upstream to the downstream, the water-cooling tube group I is positioned at the downstream of the water-cooling tube IV, two ends of the water-cooling tube group I are respectively communicated with the upper box body and the lower box body, two ends of the water-cooling tube group II are respectively communicated with the upper box body and the lower box body, and two ends of the water-cooling smoke blocking wall are respectively communicated with the upper box body and the lower box body; The lower box body is communicated with the upper box body, a left descending pipe and a right descending pipe are further communicated between the lower box body and the upper box body, two ends of the left descending pipe are respectively communicated with the lower box body and the upper box body, two ends of the right descending pipe are respectively communicated with the lower box body and the upper box body, and a water supply pipe is communicated with the lower box body. Preferably, the water conservancy diversion framework includes closing plate, V template and two guide plates, guide plate fixed connection be in the closing plate with between the V template, the closing plate is located the upper reaches, the closing plate V template with guide plate is all fixed connection be in on the water-cooled tube I, two adjacent form between the guide plate first gas passage, water-cooled tube II with form between the V template second gas passage. Preferably, t