CN209801442U - series low-nitrogen high-heat-efficiency boiler with chamber-combustion water-fire tubes - Google Patents
series low-nitrogen high-heat-efficiency boiler with chamber-combustion water-fire tubes Download PDFInfo
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- CN209801442U CN209801442U CN201920309693.0U CN201920309693U CN209801442U CN 209801442 U CN209801442 U CN 209801442U CN 201920309693 U CN201920309693 U CN 201920309693U CN 209801442 U CN209801442 U CN 209801442U
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Abstract
the utility model relates to a boiler is imitated to room combustion water and fire tube suit polyphone formula low nitrogen height. This boiler adopts the burning furnace to arrange placed in the middle, flows the cavity at its periphery hot medium water, and its inside sets up the heat transfer water pipe to two return strokes smoke guide pipe and three return strokes screw thread tobacco pipe are arranged in the hot medium water flow cavity. By adopting the structure, the radiation heat exchange surface of the hearth can be greatly increased, and the flow speed of the heat medium water is increased; and a heat exchange mode mainly comprising flue gas and heat medium water in a reverse flow manner is formed; the structure can exchange heat in time to reduce the temperature of the hearth. Meanwhile, the secondary cyclone component carries out a secondary combustion mode, so that the requirement on the temperature in the whole combustion hearth can be met under the condition of lower initial ignition temperature, and the problem that a large amount of nitrogen oxides and carbon dioxide are generated due to overhigh initial combustion hearth is solved.
Description
Technical Field
The utility model relates to a steam boiler, concretely relates to room fire water pipe suit polyphone formula low nitrogen high heat efficiency boiler.
background
At present, a civil hot water and steam gas boiler for heating generally selects a product with a chamber combustion furnace chamber provided with two and three return stroke threaded smoke pipes and an external mixing diffusion type combustor.
However, in the existing boiler structure, the boiler furnace is positioned below the central axis of the boiler barrel, and the two-return-stroke and three-return-stroke threaded smoke pipes are positioned above the boiler furnace. The heating medium water flows into the drum from the left upper part of the drum and flows out from the right upper part or the right lower part of the drum. Due to the structural limitation, the efficiency of heat exchange of the heating medium water in the structure is low, and dead points of heat exchange can occur at the lower left corner and the lower right corner of the boiler barrel. Limited by the boiler structure, the heat exchange efficiency is difficult to realize by increasing the volume of the furnace, increasing the heat exchange surface, improving the flow rate of the heat medium water and the like.
therefore, in order to increase the heat exchange efficiency, the combustion temperature of the furnace must be increased, whereas the nitrogen oxides NOxthe nitrogen oxides are generated by chemical reaction with oxygen at high temperature, and the nitrogen oxides are more generated as the temperature of the furnace is higher, and are discharged into the atmosphere as polluting gases, thereby causing environmental pollution.
The existing solution is: the waste gas discharged by the boiler is mixed with fresh air, so that the oxygen content of the air is reduced, the temperature of a hearth is reduced, and the generation of nitrogen oxides is reduced. The premise of the mode is that the volume of a hearth needs to be increased, and the output of a combustor needs to be increased in rated power, so that the cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model discloses a series low-nitrogen high-heat-efficiency boiler with a fire-water tube. This boiler has changed the structural configuration of whole boiler, has promoted heat exchange efficiency greatly through increasing the heat-transfer face and improving the heat medium water velocity of flow to can reduce the temperature in the burning furnace, under the prerequisite of having guaranteed whole heat exchange efficiency, also reach the purpose that reduces nitrogen oxide and generate.
The utility model discloses a concrete technical scheme is:
a series-connected low-nitrogen high-heat-efficiency boiler with fire and water pipes for indoor combustion comprises a boiler barrel, a boiler furnace, a boiler barrel inner ring, a front pipe plate, a rear pipe plate, a burner, a two-return smoke guide pipe, a three-return threaded smoke pipe, a water inlet water separator, a water inlet connecting bent pipe, a water outlet connecting bent pipe, a water inlet collecting box, a water outlet collecting box, a cold water inlet pipe, a hot water outlet pipe, a heat exchange water pipe and a smoke exhaust port;
The furnace pipe and the inner ring of the boiler barrel are sequentially sleeved in the boiler barrel from inside to outside and keep coaxial;
a front tube plate and a rear tube plate are respectively arranged at the two ends of the inner ring of the boiler barrel and the two ends of the furnace pipe, so that a hot medium water flowing chamber is formed among the inner ring of the boiler barrel, the furnace pipe, the front tube plate and the rear tube plate;
A front smoke chamber is formed between the boiler barrel and the front tube plate, and a rear smoke chamber is formed between the boiler barrel and the rear tube plate; the rear smoke chamber is communicated with the external environment through a smoke outlet;
the water inlet collecting box and the water outlet collecting box are respectively arranged at two ends of the furnace pipe, the water outlet collecting box is positioned at one side of the rear smoke chamber, and the water inlet collecting box is positioned at one side of the front smoke chamber, so that the water inlet collecting box, the water outlet collecting box and the furnace pipe form a combustion furnace chamber;
The water inlet header is communicated with the heat medium water flowing chamber through the water outlet connecting bent pipe;
the water outlet header is communicated with the outside through a hot water outlet pipe;
the burner is inserted along the central axis direction of the boiler barrel, and the ignition part of the burner is positioned in the combustion hearth;
the heat exchange water pipes are uniformly distributed in the combustion furnace along the circumferential direction and communicate the water inlet header with the water outlet header;
the water inlet and water separator is positioned in the rear smoke chamber and is arranged between the water outlet header and the boiler barrel, and the water inlet and water separator is communicated with the outside through a cold water inlet pipe and is communicated with the heat medium water flowing chamber through a water inlet connecting bent pipe;
the three-return-stroke threaded smoke pipes are uniformly arranged in the heat medium water flowing cavity along the circumferential direction, one end of each three-return-stroke threaded smoke pipe is communicated with the rear smoke chamber, and the other end of each three-return-stroke threaded smoke pipe is communicated with the front smoke chamber;
Two return strokes lead tobacco pipe be many and along circumferencial direction evenly distributed, two return strokes lead the tobacco pipe including bend the end and the straight section, its through bend the section with combustion furnace intercommunication, straight section be located the heat medium rivers flow the cavity in and with preceding smoke chamber intercommunication.
The lean rich oxygen combustion mode of secondary air who designs simultaneously has reduced burning furnace and combustor central flame temperature again, has further reduced the nitrogen oxide and has generated, and the concrete structure is:
the boiler also comprises a secondary cyclone component arranged in the middle of the boiler barrel in the axial direction, wherein the secondary cyclone component comprises an annular air inlet pipe and a plurality of induced draft pipes; the annular air inlet pipe is sleeved outside the boiler barrel, the plurality of air induction pipes are uniformly distributed along the circumferential direction, one end of each air induction pipe is communicated with the annular air inlet pipe, and the other end of each air induction pipe obliquely penetrates through the boiler barrel, the inner ring of the boiler barrel and the furnace liner in sequence and then enters the combustion furnace chamber, so that external high-pressure fresh air is screwed into the combustion furnace chamber from the annular air inlet pipe and the plurality of air induction pipes.
In order to adapt to the condition of expansion with heat and contraction with cold of the boiler and facilitate maintenance, the outer packing plate is wrapped outside the boiler barrel and is tensioned by a spring.
In order to adapt to the condition of expansion with heat and contraction with cold of the boiler, the pipe wall adopted by the furnace pipe is wavy.
in order to avoid the problem of generating nitrogen oxides due to the overhigh initial flame temperature during ignition, the ignition temperature of the burner is 900-1300 degrees.
Further, in order to prevent potential safety hazards caused by overlarge pressure in the boiler, a pressure release valve is connected and installed on the boiler barrel through a pressure release pipe seat.
further, a sewage draining outlet communicated with the outside and the heat medium water flowing cavity is arranged at the bottom of the boiler barrel.
Furthermore, a condensed water outlet communicated with the outside and the rear smoke chamber is arranged at the bottom of the boiler barrel.
Furthermore, the water inlet connecting bent pipe and the water outlet connecting bent pipe are multiple.
Furthermore, the pipe diameter of the two-return smoke guide pipe is larger than that of the three-return threaded smoke pipe.
The utility model has the advantages that:
1. the utility model discloses a set up two return strokes in the heat medium water flow cavity and lead tobacco pipe and three return strokes screw thread tobacco pipes simultaneously, directly establish the replacement hot-water line in burning furnace, heat transfer water pipe and heat medium water flow cavity concatenate, make the radiation heat transfer surface increase by a wide margin through this design, concatenate the back heat medium water flow rate and improve, can in time the heat transfer reduce furnace temperature, reduce nitrogen oxide and carbon dioxide and generate.
2. The utility model discloses a secondary cyclone subassembly carries out the postcombustion mode, under the lower condition of initial ignition temperature, has guaranteed the demand of whole combustion furnace internal temperature, has reduced nitrogen oxide and carbon dioxide's formation simultaneously.
3. The utility model discloses a flue gas and the flow direction of hot medium water in the hot medium water flow cavity are opposite among the three return stroke threaded smoke pipes, and this kind of heat exchange mode who is given first place against the current has improved the heat exchange efficiency greatly.
4. the utility model discloses a mode that the circumference evenly arranged flue gas passageway, heat medium water passageway for the little material consumption of drum volume is few, and material utilization is high, and material saving reduces product cost.
5. The utility model discloses a mode of the taut fixed outer packing board of spring does benefit to boiler expend with heat and contract with cold, and convenient the maintenance.
drawings
fig. 1 is a schematic structural view of a boiler.
Fig. 2 is a sectional view taken along the line a of fig. 1.
Fig. 3 is a schematic diagram of the flow of flue gas.
Fig. 4 is a sectional view taken along the line a of fig. 3.
fig. 5 is a schematic view showing the circulation of the heating medium water.
fig. 6 is a sectional view taken along the line a in fig. 5.
the numbers in the figures illustrate the following:
1-front tube plate, 2-inner drum ring, 3-two return smoke guide tube, 4-secondary cyclone component, 5-furnace container, 6-pressure relief tube seat, 7-three return threaded smoke tube, 8-rear tube plate, 9-water inlet connecting bent tube, 10-rear smoke chamber, 11-water inlet water separator, 12-smoke outlet, 13-hot water outlet pipe, 14-cold water inlet pipe, 15-water outlet header, 16-condensate outlet, 17-sewage outlet, 18-boiler leg, 19-combustion hearth, 20-heat exchange water pipe, 21-front smoke chamber, 22-water outlet connecting bent tube, 23-asbestos rope, 24-water inlet header, 25-combustor, 26-spring, 27-outer packaging plate, 28-drum, 29-heat medium water flow chamber, 30-induced duct, 31-annular air inlet pipe.
Detailed Description
the present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, a series low-nitrogen high-heat-efficiency boiler with fire and water pipes sleeved in series comprises a boiler barrel 28, a boiler furnace 5, a boiler barrel inner ring 2, a front pipe plate 1, a rear pipe plate 8, a burner 25, a two-return smoke guide pipe 3, a three-return threaded smoke pipe 7, a water inlet water distributor 11, a water inlet connecting bent pipe 9, a water outlet connecting bent pipe 22, a water inlet header 24, a water outlet header 15, a cold water inlet pipe 14, a hot water outlet pipe 13, a heat exchange water pipe 20 and a smoke exhaust port 12;
The furnace pipe 5 and the inner ring 2 of the boiler barrel are sequentially sleeved in the boiler barrel 28 from inside to outside and keep coaxial;
A front tube plate 1 and a rear tube plate 8 are respectively arranged at two ends of the inner circle 2 of the boiler barrel and two ends of the furnace pipe 5 (the furnace pipe 5 is respectively connected with the front tube plate 1 and the rear tube plate 8 and is tightly pressed and sealed by a circle of asbestos rope 23), so that a hot medium water flowing chamber 29 (the hot medium water flowing chamber is in a ring sleeve shape) is formed among the inner circle 2 of the boiler barrel, the furnace pipe 5, the front tube plate 1 and the rear tube plate 8; the drum 28 and the front tube plate 1 form a front smoke chamber 21 (the left end of the drum in fig. 1), and the drum 28 and the rear tube plate 8 form a rear smoke chamber 10 (the right end of the drum in fig. 1); the rear smoke chamber 10 is communicated with the external environment through a smoke outlet 12; the water inlet header 24 and the water outlet header 15 are respectively arranged at two ends of the furnace pipe 5, the water outlet header 15 is positioned at one side of the rear smoke chamber 10, the water inlet header 24 is positioned at one side of the front smoke chamber 21, and thus the water inlet header 24, the water outlet header 15 and the furnace pipe form a combustion furnace 19;
The burner 25 is inserted along the central axis direction of the boiler barrel 28, and the ignition part of the burner is positioned in the combustion hearth 19; the water inlet header 24 is communicated with the heat medium water flowing chamber 29 through the water outlet connecting bent pipe 22 (a plurality of water outlet connecting bent pipes 22 are arranged in the embodiment); the water outlet header 15 is communicated with the outside through a hot water outlet pipe 13;
The inlet water separator 11 is positioned in the rear smoke chamber 10 and is arranged between the outlet water header 15 and the boiler barrel 28, the inlet water separator 11 is communicated with the outside through a cold water inlet pipe 14 and is communicated with the heat medium water flowing chamber 29 through an inlet connecting bent pipe 9 (a plurality of inlet connecting bent pipes 9 are arranged in the embodiment);
The three-return-stroke threaded smoke pipes 7 are uniformly arranged in the heat medium water flowing chamber 29 along the circumferential direction, one end of each three-return-stroke threaded smoke pipe 7 is communicated with the rear smoke chamber 10, and the other end of each three-return-stroke threaded smoke pipe 7 is communicated with the front smoke chamber 21;
The two return smoke guide pipes 3 are uniformly distributed along the circumferential direction and comprise bent ends and straight sections, the bent ends are communicated with the combustion hearth 19 through the bent sections, and the straight sections are located in the heat medium water flow chamber 29 and communicated with the front smoke chamber 21.
The pipe diameter of the two-return smoke guide pipe 3 is larger than that of the three-return threaded smoke pipe 7, and the number of the three-return threaded smoke pipes 7 is 2 times of that of the two-return smoke guide pipes.
in the above structure, as shown in fig. 3 and 4, the flow conditions of the flue gas are as follows: the burner 25 is ignited in the combustion furnace 19, and the generated hot flue gas firstly reaches the front smoke chamber 21 through the two-return smoke guide pipes 3, then enters the three-return threaded smoke pipes 7 from the front smoke chamber 21, and finally is discharged to the outside atmosphere from the rear smoke chamber 10 and the smoke outlet 12.
as shown in fig. 5 and 6, the flow of the heating medium water: the hot water enters the water inlet water separator 11 from the cold water inlet pipe 14, then enters the hot water flowing chamber 29 through the water inlet connecting bent pipes 9, then enters the water inlet header 24 through the water outlet connecting bent pipes 22, then flows into the water outlet header 15 through the heat exchange water pipes 20, and finally flows into the user end from the hot water outlet pipe 13.
And (3) heat exchange process: the flue gas in the combustion furnace 19 and the heat medium water in the heat exchange water pipe 20 perform primary heat exchange, then the two-return smoke guide pipe 3 and the three-return smoke threaded pipe 7 perform secondary heat exchange with the heat medium water in the heat medium water flowing chamber 29, and in the process that the three-return smoke threaded pipe 7 and the heat medium water in the heat medium water flowing chamber 29 perform heat exchange, the flow direction of the flue gas in the three-return smoke threaded pipe 7 is opposite to the flow direction of the heat medium water in the heat medium water flowing chamber 29, and the heat exchange efficiency is obviously improved again (because the diameter of the heat exchange water pipe 20 is far smaller than that of the heat medium water flowing chamber 29, the water flow speed in the heat exchange water pipe 20 is accelerated, so that the temperature in the combustion furnace 19 can be quickly taken away).
It is also mentioned that: in this embodiment, the water inlet connecting bent pipe 9 and the water outlet connecting bent pipe 22 are distributed at the dead angle position of the drum 28, so as to avoid the heat exchange dead angle.
The following optimization design is also made in the implementation:
1. The lean oxygen-rich mode of burning of secondary air when guaranteeing the compound user demand of temperature in the burning furnace, flame temperature when having reduced burning furnace internal combustion ware initial ignition again has further reduced nitrogen oxide and has generated, and concrete structure is:
The boiler also comprises a secondary cyclone component 4 arranged in the middle of the boiler barrel 28 in the axial direction, wherein the secondary cyclone component 4 comprises an annular air inlet pipe 31 and a plurality of induced draft pipes 30; the annular air inlet pipe 31 is sleeved outside the boiler barrel 28, the plurality of air guiding pipes 30 are uniformly distributed along the circumferential direction, one end of each air guiding pipe 30 is communicated with the annular air inlet pipe 31, and the other end of each air guiding pipe 30 obliquely penetrates through the boiler barrel 28, the inner ring 25 of the boiler barrel and the furnace pipe 5 in sequence and then enters the combustion furnace, so that external high-pressure fresh air is screwed into the combustion furnace 19 from the annular air inlet pipe 31 and the plurality of air guiding pipes 30.
the combustion mechanism of this combustion structure is: the burner is adjusted to be in an oxygen-deficient combustion ignition state in the combustion furnace chamber when the burner is initially ignited, so that the temperature during initial ignition is lower (the ignition temperature of the burner is generally controlled to be 900-1300 degrees), the problem of a large amount of nitrogen oxides generated by high-temperature combustion can be greatly reduced, then oxygen supplementing secondary cyclone combustion is carried out through a secondary cyclone assembly arranged in the middle of the axial direction of the boiler barrel, the temperature in the combustion furnace chamber can be increased again, and the heat required by a user side after heat exchange is ensured.
2. In order to adapt to the expansion and contraction of the boiler and facilitate the maintenance, the outer packing plate 27 is wrapped outside the boiler barrel 28, the outer packing plate 27 is tensioned by the spring 26, and the pipe wall adopted by the furnace pipe 5 is wavy.
3. in order to prevent the potential safety hazard caused by overlarge pressure in the boiler, a pressure relief valve is connected and installed on the boiler barrel 28 through a pressure relief pipe seat 6.
4. the bottom of the boiler barrel 28 is provided with a sewage draining outlet 17 communicated with the outside and the heat medium water flowing chamber 29, and the bottom of the boiler barrel 28 is provided with a condensed water outlet 16 communicated with the outside and the rear smoke chamber 10.
5. The bottom of the drum 28 is provided with boiler legs 18 for support.
Claims (10)
1. the utility model provides a room fire water and fire tube suit polyphone formula low nitrogen high heat efficiency boiler which characterized in that:
The boiler comprises a boiler barrel (28), a boiler furnace (5), a boiler barrel inner ring (2), a front pipe plate (1), a rear pipe plate (8), a burner (25), a two-return smoke guide pipe (3), a three-return threaded smoke pipe (7), a water inlet water distributor (11), a water inlet connecting bent pipe (9), a water outlet connecting bent pipe (22), a water inlet header (24), a water outlet header (15), a cold water inlet pipe (14), a hot water outlet pipe (13), a heat exchange water pipe (20) and a smoke exhaust port (12);
The furnace pipe (5) and the inner ring (2) of the boiler barrel are sequentially sleeved in the boiler barrel (28) from inside to outside and keep coaxial;
a front tube plate (1) and a rear tube plate (8) are respectively arranged at two ends of the inner drum ring (2) and the furnace pipe (5), so that a hot medium water flowing chamber (29) is formed among the inner drum ring (2), the furnace pipe (5), the front tube plate (1) and the rear tube plate (8);
A front smoke chamber (21) is formed between the boiler barrel (28) and the front tube plate (1), and a rear smoke chamber (10) is formed between the boiler barrel (28) and the rear tube plate (8); the rear smoke chamber (10) is communicated with the external environment through a smoke outlet (12);
The water inlet collecting box (24) and the water outlet collecting box (15) are respectively arranged at two ends of the furnace pipe (5), the water outlet collecting box (15) is positioned at one side of the rear smoke chamber (10), the water inlet collecting box (24) is positioned at one side of the front smoke chamber (21), and therefore the water inlet collecting box (24), the water outlet collecting box (15) and the furnace pipe (5) form a combustion furnace chamber (19);
The water inlet header (24) is communicated with the heat medium water flowing chamber (29) through the water outlet connecting bent pipe (22);
The water outlet header (15) is communicated with the outside through a hot water outlet pipe (13);
The burner (25) is inserted along the central axis direction of the boiler barrel (28), and the ignition part of the burner is positioned in the combustion hearth (19);
The heat exchange water pipes (20) are uniformly distributed in the combustion furnace (19) along the circumferential direction and communicate the water inlet header (24) with the water outlet header (15);
the water inlet and water separator (11) is positioned on one side of the rear smoke chamber (10) and is arranged between the water outlet header (15) and the boiler barrel (28), and the water inlet and water separator (11) is communicated with the outside through a cold water inlet pipe (14) and is communicated with the heat medium water flowing chamber (29) through a water inlet connecting bent pipe (9);
The three-return-stroke threaded smoke pipes (7) are uniformly arranged in the heat medium water flowing chamber (29) along the circumferential direction, one end of each three-return-stroke threaded smoke pipe (7) is communicated with the rear smoke chamber (10), and the other end of each three-return-stroke threaded smoke pipe is communicated with the front smoke chamber (21);
The two return smoke guide pipes (3) are uniformly distributed along the circumferential direction and comprise bent ends and straight sections, the bent ends are communicated with the combustion hearth (19) through the bent sections, and the straight sections are located in the heat medium water flow chamber (29) and communicated with the front smoke chamber (21).
2. the chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 1, characterized in that:
The boiler also comprises a secondary cyclone component (4) arranged in the middle of the boiler barrel (28) in the axial direction, wherein the secondary cyclone component (4) comprises an annular air inlet pipe (31) and a plurality of air guide pipes (30); the annular air inlet pipe (31) is sleeved outside the boiler, a plurality of air guiding pipes (30) are uniformly distributed along the circumferential direction, one end of each air guiding pipe (30) is communicated with the annular air inlet pipe (31), and the other end of each air guiding pipe obliquely penetrates through the boiler barrel (28), the boiler barrel inner ring (2) and the boiler furnace (5) in sequence and then enters the combustion hearth (19).
3. the chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 1 or 2, characterized in that:
the outer packaging plate (27) is wrapped outside the boiler barrel (28), and the outer packaging plate (27) is tensioned by a spring (26).
4. The chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 3, characterized in that:
The wall of the furnace pipe (5) is wave-shaped.
5. The chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 4, wherein: the ignition temperature of the burner (25) is 900 DEG to 1300 deg.
6. The chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 5, wherein: the boiler barrel (28) is connected with and provided with a pressure release valve through a pressure release pipe seat (6).
7. The chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 6, wherein: and a sewage draining outlet (17) communicated with the outside and the heat medium water flowing chamber (29) is arranged at the bottom of the boiler barrel (28).
8. The chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 7, wherein: and a condensed water outlet (16) communicated with the outside and the rear smoke chamber (10) is arranged at the bottom of the boiler barrel (28).
9. the chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 8, wherein: the water inlet connecting bent pipe (9) and the water outlet connecting bent pipe (22) are multiple.
10. the chamber-fired water and fire tube jacketed series low-nitrogen high-heat-efficiency boiler of claim 9, wherein: the pipe diameter of the two-return smoke guide pipe (3) is larger than that of the three-return threaded smoke pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920309693.0U CN209801442U (en) | 2019-03-12 | 2019-03-12 | series low-nitrogen high-heat-efficiency boiler with chamber-combustion water-fire tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920309693.0U CN209801442U (en) | 2019-03-12 | 2019-03-12 | series low-nitrogen high-heat-efficiency boiler with chamber-combustion water-fire tubes |
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| Publication Number | Publication Date |
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| CN209801442U true CN209801442U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920309693.0U Active CN209801442U (en) | 2019-03-12 | 2019-03-12 | series low-nitrogen high-heat-efficiency boiler with chamber-combustion water-fire tubes |
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| CN (1) | CN209801442U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606785A (en) * | 2021-08-11 | 2021-11-05 | 郭奇 | Forced circulation ultra-low nitrogen vacuum phase-change hot water condensation boiler |
| RU2795361C1 (en) * | 2022-09-14 | 2023-05-03 | Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук | Steam gas generator |
-
2019
- 2019-03-12 CN CN201920309693.0U patent/CN209801442U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606785A (en) * | 2021-08-11 | 2021-11-05 | 郭奇 | Forced circulation ultra-low nitrogen vacuum phase-change hot water condensation boiler |
| RU2795361C1 (en) * | 2022-09-14 | 2023-05-03 | Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук | Steam gas generator |
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