CN212566301U - Energy-saving high-efficiency vacuum boiler - Google Patents

Energy-saving high-efficiency vacuum boiler Download PDF

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Publication number
CN212566301U
CN212566301U CN202021027706.4U CN202021027706U CN212566301U CN 212566301 U CN212566301 U CN 212566301U CN 202021027706 U CN202021027706 U CN 202021027706U CN 212566301 U CN212566301 U CN 212566301U
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China
Prior art keywords
boiler
energy
cavity
smoke
furnace pipe
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CN202021027706.4U
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Chinese (zh)
Inventor
李德华
刁宏伟
庞春怀
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Beijing Kd Navien Thermal Equipment Co ltd
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Beijing Kd Navien Thermal Equipment Co ltd
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Abstract

The utility model relates to the technical field of vacuum boilers, in particular to an energy-saving and high-efficiency vacuum boiler using gas and liquid fuels, which comprises a boiler cavity, a gas-liquid fuel combustion liner arranged in the boiler cavity, a recombustion chamber with an inlet communicated with the outlet of the liner, a plurality of groups of smoke tubes with an inlet communicated with the outlet of the recombustion chamber, a condenser with an inlet communicated with the outlet of the smoke tubes, and a heat exchanger positioned in the boiler cavity, wherein the liner is horizontally arranged at the lower part of the boiler cavity, and the inlet of the liner is hermetically connected with the side wall of the boiler cavity; the length direction of the multiple groups of smoke pipes is parallel to the length direction of the furnace pipe and is uniformly distributed on the two sides of the length direction of the furnace pipe or the upper part of the furnace pipe. The utility model provides an among the prior art vacuum boiler heating inhomogeneous, the not high technical problem of heating efficiency.

Description

Energy-saving high-efficiency vacuum boiler
Technical Field
The utility model relates to a vacuum boiler's technical field especially relates to an energy-conserving high-efficient type vacuum boiler of gas, liquid fuel of burning.
Background
The vacuum boiler is called as a vacuum phase change boiler, a negative pressure closed vacuum environment is formed in a closed furnace body, part of heat medium water is filled in the vacuum environment, the heat medium water is heated through combustion or other modes, the heat medium water is evaporated and condensed to a heat exchanger, and the heat exchanger is used for heating water to be heated.
The current chinese utility model patent of the bulletin number of authorizing is CN204648658U discloses an energy-concerving and environment-protective type vacuum boiler, it includes the combustor, a pedestal, the smoke box, the boiler cavity, the heat exchanger, economizer and circulating water pump, the boiler cavity sets up on the base, the combustor is connected with the boiler cavity, the smoke box sets up between combustor and boiler cavity, the economizer sets up in boiler cavity top, the heat exchanger sets up the upper portion in the boiler cavity, the economizer is connected with the smoke box, circulating water pump passes through the pipeline and is connected with heat exchanger and economizer respectively, and parallel connection between heat exchanger and the economizer. The utility model discloses a flue gas side does not have the acid corrosion, and the power consumption is low, and the technique is located the similar product forward position.
The defects of the prior art scheme are as follows: the upper furnace pipe and the convection bank (smoke pipe) are respectively positioned at two sides of the lower part of the boiler cavity, and during heating, the heat degree of the furnace pipe is higher than the temperature of the convection bank, so that the heating medium water is heated unevenly, and the heating efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
To the deficiency that prior art exists, the utility model aims at providing a more energy-conserving efficient vacuum boiler.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: an energy-saving high-efficiency vacuum boiler comprises a boiler cavity, a boiler liner which is arranged in the boiler cavity and is used for combusting gas-liquid fuel, a recombustion chamber with an inlet communicated with an outlet of the boiler liner, a plurality of groups of smoke tubes with inlets communicated with an outlet of the recombustion chamber, a condenser with an inlet communicated with an outlet of the smoke tubes, and a heat exchanger with a heat exchange part positioned in the boiler cavity, wherein the boiler liner is horizontally arranged at the lower part of the boiler cavity, and the inlet of the boiler liner is hermetically connected with the side wall of the boiler; the length direction of the multiple groups of smoke pipes is parallel to the length direction of the furnace pipe and is uniformly distributed on the two sides of the length direction of the furnace pipe or the upper part of the furnace pipe.
By adopting the technical scheme, when in use, the burner is communicated with the furnace pipe and burns to generate flame, the flue gas of the flame enters the flashback chamber from the furnace pipe, turns from the flashback chamber and then enters the smoke pipe, and then is discharged into the condenser through the smoke pipe and then is discharged into the atmosphere after being condensed by the condenser; in the process, the furnace pipe and the smoke pipe heat the heat medium water in the boiler cavity, the heat medium water generates steam to heat the heat exchanger, and then the heat exchanger heats the water to be heated; the smoke tube is arranged on two sides of the length direction of the furnace pipe or on the upper side of the furnace pipe, can be matched with the furnace pipe to uniformly radiate heat, heats heat medium water more uniformly, and has higher heating efficiency.
The present invention may be further configured in a preferred embodiment as: the multiple groups of smoke pipes are uniformly distributed in gaps on two sides of the length direction of the furnace pipe and the boiler cavity.
Through adopting above-mentioned technical scheme, the symmetry of tobacco pipe, stove courage and boiler cavity is better, enables more even transmission of heat to the heat medium aquatic, and heating efficiency is higher.
The present invention may be further configured in a preferred embodiment as: the cross section of the boiler cavity is in an oval shape which is symmetrical up and down, and the cross section of the furnace is in a circular ring shape.
By adopting the technical scheme, the furnace pipe can more easily obtain the heat of flame and smoke and can more uniformly transfer the heat to the heat medium water; meanwhile, the inner wall shape of the boiler cavity is better in adaptability to the boiler furnace, so that heat can be concentrated more, and heat waste is reduced.
The present invention may be further configured in a preferred embodiment as: the number of the smoke pipes is gradually increased from bottom to top.
By adopting the technical scheme, the space is larger from bottom to top by utilizing the internal structures of the boiler cavity and the boiler furnace, and more smoke pipes can be arranged; more importantly, based on the rising trend of hot air, the heat in the flue gas can be collected more sufficiently and rapidly, and the heating efficiency of the boiler is improved.
The present invention may be further configured in a preferred embodiment as: the smoke pipes positioned on the uppermost layer are positioned on the same horizontal plane.
Through adopting above-mentioned technical scheme for the initial evaporation position of heat medium water is located the coplanar, and is better to the heating effect of heat exchanger.
The present invention may be further configured in a preferred embodiment as: the back combustion chamber is arranged outside the boiler cavity.
By adopting the technical scheme, the space is vacated for the arrangement of the smoke pipes, the length of each smoke pipe is the same, the heat in the smoke can be more fully absorbed, and the heating efficiency of the vacuum boiler is further improved.
The present invention may be further configured in a preferred embodiment as: the outer side of the flashback chamber is provided with a layer of protective plate, a cooling interlayer is formed between the protective plate and the flashback chamber, and a cooling medium is filled in the cooling interlayer.
By adopting the technical scheme, the dry combustion phenomenon of the flashback chamber can be avoided, the service life of the flashback chamber is prolonged, meanwhile, the temperature outside the flashback chamber can be reduced, and the use safety of equipment is improved.
The present invention may be further configured in a preferred embodiment as: a front smoke box communicated with the smoke pipe is arranged on one side of the boiler cavity body, which is opposite to the recombustion chamber; the upper part of the front smoke box is communicated with a necking flue, and the necking end of the flue is communicated with the condenser.
Through adopting above-mentioned technical scheme, be favorable to guiding the circulation of flue gas, improved heating efficiency.
The present invention may be further configured in a preferred embodiment as: the boiler cavity is recessed at a position corresponding to the flue to form a step part, and the flue extends and widens towards the step part.
Through adopting above-mentioned technical scheme, flue upper portion opening is comparatively moderate, does benefit to the flue gas circulation.
The present invention may be further configured in a preferred embodiment as: two heat exchangers are arranged in the boiler cavity side by side.
Through adopting above-mentioned technical scheme, two heat exchangers can be more abundant utilize the heat of vapor.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the smoke pipes are uniformly arranged on two sides of the length direction of the furnace pipe or on the upper side of the furnace pipe, can be matched with the furnace pipe to uniformly radiate heat, and can uniformly heat the heating medium water and have high heating efficiency;
2. the recombustion chamber is arranged outside the boiler cavity, so that the processing difficulty of the vacuum boiler is reduced, meanwhile, a space is vacated for the arrangement of the smoke pipes, and the length of each smoke pipe is the same, so that the heat in the smoke can be more fully absorbed, and the heating efficiency of the vacuum boiler is further improved;
3. set up the ladder portion before setting up on smoke box, throat form flue and the boiler cavity, the better guide flue gas circulation of ability has improved heat exchange efficiency.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the overall structure in one embodiment;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a transverse sectional view of the overall structure in the second embodiment.
In the figure, 1, a boiler cavity; 10. a step portion; 2. a furnace pipe; 20. a flame; 21. flue gas; 3. a flashback chamber; 30. a protection plate; 31. cooling the interlayer; 4. a smoke pipe; 5. a condenser; 6. a heat exchanger; 7. a front smoke box; 8. a flue.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Referring to fig. 1 and 2, for the utility model discloses an energy-conserving high-efficient type vacuum boiler, including boiler cavity 1, set up in boiler cavity 1 burn with gas-liquid fuel's stove courage 2, import intercommunication stove courage 2 export the chamber of backflowing 3, import intercommunication chamber of backflowing 3 export multiunit tobacco pipes 4, import intercommunication tobacco pipe 4 export the condenser to and the heat exchanger 6 that the heat transfer position is located boiler cavity 1.
When in use, the burner is communicated with the furnace pipe 2, flame 20 is generated by combustion, the flue gas 21 of the flame 20 enters the flashback chamber 3 from the furnace pipe 2, turns from the flashback chamber 3 and then enters the smoke pipe 4, and then is discharged into the condenser 5 through the smoke pipe 4, and is discharged into the atmosphere after being condensed by the condenser 5; in the process, the furnace pipe 2 and the smoke pipe 4 heat the heat medium water in the boiler cavity 1, the heat medium water generates steam to heat the heat exchanger 6, and then the heat exchanger 6 heats the water to be heated.
In the embodiment, the cross section of the boiler cavity 1 is in an oval shape which is symmetrical up and down; the cross section of the furnace pipe 2 is circular, the furnace pipe 2 is horizontally arranged at the lower part of the boiler cavity 1, and the inlet of the furnace pipe 2 is hermetically connected with the side wall of the boiler cavity 1; the length direction of the multiple groups of smoke pipes 4 is parallel to the length direction of the furnace pipe 2 and is uniformly distributed in the gaps at the two sides of the furnace pipe 2 and the boiler cavity 1 in the length direction; the number of the smoke pipes 4 is gradually increased from bottom to top, and the smoke pipes 4 on the uppermost layer are positioned on the same horizontal plane.
The advantage of this arrangement is that the furnace 2 can more easily acquire the heat of the flame 20 and the flue gas 21 and can more uniformly transfer the heat to the heat medium water; meanwhile, the inner wall shape of the boiler cavity 1 has better adaptability with the furnace pipe 2, so that heat can be more concentrated, and heat waste is reduced; the smoke pipes 4 are densely arranged in gaps at two sides of the boiler cavity 1 and the boiler furnace 2 in the length direction, and can be matched with the boiler furnace 2 to uniformly radiate heat so as to heat the heating medium water; the smoke tube 4 is matched with the furnace pipe 2 to form a uniform bottom heat dissipation structure, and the efficiency is high for heating the heating medium water; meanwhile, based on the rising trend of hot air, the plane of the smoke tube 4 on the uppermost layer is preferably higher than the furnace pipe 2, and the smoke tube 4 is arranged above the furnace pipe 2, so that the heat in the smoke can be collected more sufficiently and rapidly, and the heating efficiency of the boiler is improved.
The recombustion chamber 3 is arranged outside the boiler cavity 1, and the boiler cavity 1 is provided with a through hole for communicating the furnace 2 with the recombustion chamber 3 at a corresponding position, so that a space is vacated for the arrangement of the smoke pipes 4, and the smoke pipes 4 have the same length and can fully absorb heat in smoke. The heat exchanger 6 adopts a U-shaped heat exchanger, and the heat exchange efficiency is higher. The fins in the condenser 5 are made of acid-resistant materials, so that the condenser 5 is not easily damaged by low-concentration sulfuric acid generated by liquefying the flue gas 21, and the service life of the vacuum boiler is prolonged.
Referring to fig. 1, a protection plate 30 is arranged on the outer side of the flashback chamber 3, a closed cooling interlayer 31 is formed between the protection plate 30 and the flashback chamber 3, and a cooling medium such as water can be filled into the cooling interlayer 31, so that the phenomenon of dry combustion of the flashback chamber 3 can be avoided, the service life of the flashback chamber 3 is prolonged, meanwhile, the temperature on the outer side of the flashback chamber 3 can be reduced, and the use safety of equipment is improved. The cooling interlayer 31 can be externally connected with a cooling medium source for cooling and can also be communicated with the boiler cavity 1, so that the heating medium water can be used for directly cooling, and the system structure is simpler.
In order to lead out the smoke more conveniently, a front smoke box 7 communicated with the smoke pipe 4 is arranged on one side of the boiler cavity 1 opposite to the combustion chamber 3; the upper part of the front smoke box 7 is communicated with a necking flue 8, and the necking end of the flue 8 is communicated with the condenser 5. For a clearer illustration of the positions of the flue 8 and the condenser 5, it can be seen that two marked vertical lines are drawn at the positions corresponding to the condenser 5, the left vertical line is the position where the condenser 5 is communicated with the flue 8, and the right vertical line is the communication position where the condenser 5 is communicated with the external smoke outlet pipe.
When the device is used, the front smoke box 7 receives smoke 21 discharged by all the smoke pipes 4, then the smoke 21 rises into the smoke channel 8, and gradually concentrates and uniformly enters the condenser 5 from the lower part to the upper part of the smoke channel 8 to complete the guiding function of the smoke 21, so that the smoke 21 can more smoothly enter the condenser 5.
In actual use, the flue 8 is in a throat shape, and the space corresponding to the flue gas 21 reaching the uppermost part of the flue 8 is narrowest, so that smoke resistance is easily generated, and the flow of the flue gas is influenced. For this purpose, a step 10 is concavely formed in the boiler cavity 1 at a position corresponding to the flue 8, and the flue 8 correspondingly extends and widens towards the step 10, so that the upper opening of the flue 8 is not too small, which is beneficial to the circulation of the flue gas 21.
Example two
Referring to fig. 3, the second embodiment differs from the first embodiment in that two heat exchangers 6 are arranged side by side in the boiler cavity 1, the two heat exchangers 6 can more fully utilize the heat of the water vapor, and the specific number of the heat exchangers 6 is determined mainly according to the actual amount of hot water in the actual application.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides an energy-conserving high-efficient type vacuum boiler, includes boiler cavity (1), set up in boiler cavity (1) and burn with gas-liquid fuel's stove courage (2), import intercommunication stove courage (2) export back combustion chamber (3), import intercommunication back combustion chamber (3) export multiunit tobacco pipe (4), import intercommunication tobacco pipe (4) export condenser (5) to and heat exchanger (6) that the heat transfer position is located boiler cavity (1), its characterized in that: the furnace pipe (2) is horizontally arranged at the lower part of the boiler cavity (1), and the inlet of the furnace pipe is hermetically connected with the side wall of the boiler cavity (1); the length direction of the multiple groups of smoke pipes (4) is parallel to the length direction of the furnace pipe (2) and is evenly distributed on the two sides of the length direction of the furnace pipe (2) or the upper part of the furnace pipe (2).
2. An energy-saving high-efficiency vacuum boiler according to claim 1, characterized in that: the multiple groups of smoke pipes (4) are uniformly distributed in the gaps at the two sides of the length direction of the furnace pipe (2) and the boiler cavity (1).
3. An energy-saving high-efficiency vacuum boiler according to claim 2, characterized in that: the cross section of the boiler cavity (1) is in an oval shape which is symmetrical up and down, and the cross section of the furnace pipe (2) is in a circular ring shape.
4. An energy-saving high-efficiency vacuum boiler according to claim 3, characterized in that: the number of the smoke pipes (4) is gradually increased from bottom to top.
5. An energy-saving high-efficiency vacuum boiler according to claim 4, characterized in that: the smoke pipes (4) positioned at the uppermost layer are positioned on the same horizontal plane.
6. An energy-saving high-efficiency vacuum boiler according to claim 1, characterized in that: the back combustion chamber (3) is arranged outside the boiler cavity (1).
7. An energy-saving high-efficiency vacuum boiler according to claim 6, characterized in that: the outer side of the recombustion chamber (3) is provided with a layer of protective plate (30), a cooling interlayer (31) is formed between the protective plate (30) and the recombustion chamber (3), and a cooling medium is filled in the cooling interlayer (31).
8. An energy-saving high-efficiency vacuum boiler according to claim 1, characterized in that: a front smoke box (7) communicated with the smoke pipe (4) is arranged on one side of the boiler cavity (1) opposite to the recombustion chamber (3); the upper part of the front smoke box (7) is communicated with a necking-shaped flue (8), and the necking end of the flue (8) is communicated with the condenser (5).
9. An energy-saving high-efficiency vacuum boiler according to claim 8, characterized in that: the boiler cavity (1) is concavely provided with a step part (10) at the position corresponding to the flue (8), and the flue (8) extends and widens towards the step part (10).
10. An energy-saving high-efficiency vacuum boiler according to claim 3, characterized in that: two heat exchangers (6) are arranged in the boiler cavity (1) side by side.
CN202021027706.4U 2020-06-06 2020-06-06 Energy-saving high-efficiency vacuum boiler Active CN212566301U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021027706.4U CN212566301U (en) 2020-06-06 2020-06-06 Energy-saving high-efficiency vacuum boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021027706.4U CN212566301U (en) 2020-06-06 2020-06-06 Energy-saving high-efficiency vacuum boiler

Publications (1)

Publication Number Publication Date
CN212566301U true CN212566301U (en) 2021-02-19

Family

ID=74628958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021027706.4U Active CN212566301U (en) 2020-06-06 2020-06-06 Energy-saving high-efficiency vacuum boiler

Country Status (1)

Country Link
CN (1) CN212566301U (en)

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