CN219561395U - Self-preheating ladle baking equipment with double jet flow heat exchange - Google Patents
Self-preheating ladle baking equipment with double jet flow heat exchange Download PDFInfo
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- CN219561395U CN219561395U CN202320642537.2U CN202320642537U CN219561395U CN 219561395 U CN219561395 U CN 219561395U CN 202320642537 U CN202320642537 U CN 202320642537U CN 219561395 U CN219561395 U CN 219561395U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model belongs to the technical field of ladle baking and heating, in particular to self-preheating ladle baking equipment with double jet heat exchange, which at least comprises a combustion air inlet pipe, jet heat exchangers, a gas pipe, a burner and a ladle cover, wherein the two jet heat exchangers are respectively arranged on two sides of the burner; each jet flow heat exchanger consists of an air group chamber and more than one flue gas chamber, wherein the air group chamber is annularly distributed outside the flue gas chamber, and the air group chamber is separated by the side wall provided with jet flow holes to form a plurality of air chambers which are in a ladder shape. The design of the two jet flow heat exchangers reduces the volume weight of a single jet flow heat exchanger, the multi-stage air chamber increases the heat exchange stroke of air and smoke, and the fins on the inner wall of the smoke chamber enhance the heat exchange coefficient of the smoke side.
Description
Technical Field
The utility model belongs to the technical field of ladle baking and heating, and particularly relates to self-preheating ladle baking equipment with double jet flow heat exchange.
Background
The self-preheating ladle baking device is characterized in that a self-preheating ladle baking device for high-speed jet flow heat exchange is disclosed in the Chinese patent No. 113732278A, the heat of flue gas is fully utilized in a high-speed jet flow heat exchange mode, and combustion air entering a high-speed burner is preheated, but the effect that a jet flow heat exchanger is wrapped on the outer side and the upper part of the high-speed burner is found to be not ideal in actual use.
Disclosure of Invention
In order to reduce the volume of the jet flow heat exchanger and improve the heat exchange area and efficiency of the jet flow heat exchanger, the utility model is realized by reducing the volume and weight of the single jet flow heat exchanger, increasing the air stroke in the single jet flow heat exchanger, increasing the heat exchange area of the single jet flow heat exchanger and increasing the number of the jet flow heat exchangers, thereby not only reducing the volume of the jet flow heat exchanger, but also improving the heat exchange efficiency of the heat exchanger and the preheating temperature of combustion air.
The technical scheme provided by the utility model is that the self-preheating ladle baking equipment with double jet flow heat exchange at least comprises a combustion air inlet pipe, jet flow heat exchangers, a gas pipe, a burner and a ladle cover, wherein the two jet flow heat exchangers are respectively arranged at two sides of the burner, the air inlet of each jet flow heat exchanger is connected with the combustion air inlet pipe, the air outlet of each jet flow heat exchanger is connected with the burner through a combustion air connecting pipe, and the burner is positioned at the central part above the ladle cover and is coaxially arranged with the ladle cover;
each jet flow heat exchanger consists of an air group chamber and more than one flue gas chamber, the air group chamber is annularly distributed outside the flue gas chamber, and the air group chamber consists of an air inlet ring chamber, a plurality of air chambers and an air outlet ring chamber; the adjacent air inlet ring chambers and the air chambers are separated by side walls provided with jet holes, the adjacent air chambers and the air outlet ring chambers are separated by side walls provided with jet holes, and the longitudinal sections of the side walls provided with jet holes are in a Z shape with horizontal upper ends and lower ends and vertical middle parts; the interior of each flue gas chamber forms a cavity, the inner wall of the flue gas chamber is provided with a plurality of ribs, one end of each rib is welded on the inner wall of the flue gas chamber, and the other end extends to the inner cavity of the flue gas chamber.
And at least two combustion air inlet pipes and at least two combustion air connecting pipes are arranged.
Furthermore, a gas pipe is connected to the gas inlet of the burner.
Furthermore, the mounting positions of the two jet heat exchangers are symmetrical with respect to the burner center, i.e. the burner is the center of symmetry of the two jet heat exchangers.
The air group chamber is composed of 1 air inlet ring chamber, n air chambers and 1 air outlet ring chamber, wherein n=3-8.
When n=3, the air group chamber of the jet flow heat exchanger consists of an air inlet ring chamber A, an air chamber B, an air chamber C, an air chamber D and an air outlet ring chamber E from bottom to top; the air inlet ring chamber A is connected with a combustion air inlet pipe; the side wall of the air inlet ring chamber A connected with the air chamber B is provided with a plurality of spray holes distributed according to a matrix; the side wall of the air chamber B connected with the air chamber C is provided with a plurality of spraying holes distributed according to a matrix; the side wall of the air chamber C connected with the air chamber D is provided with a plurality of spray holes distributed according to a matrix; the side wall of the air chamber D, which is connected with the air outlet ring chamber E, is provided with a plurality of spray holes distributed according to a matrix; the air outlet ring chamber E is connected with a combustion air connecting pipe; the air chambers B, C and D are all stepped.
Furthermore, each jet heat exchanger has 1 to 6 flue gas chambers.
The side wall with the spray hole is integrally distributed on the outer side of the flue gas chamber in a ring mode, one end of the side wall with the spray hole is connected with the inside of the air group chamber into a whole, the other end of the side wall with the spray hole is connected with the outer wall of the flue gas chamber into a whole, and the longitudinal section of the side wall with the spray hole is in a Z shape with the upper end, the lower end and the middle vertical.
Compared with the prior art, the beneficial effect of this technical scheme lies in: 1. the volume and the weight of a single jet flow heat exchanger are reduced, the single jet flow heat exchanger is not required to be manufactured into a whole with a high-speed burner, the assembly is convenient, the single jet flow heat exchanger is suitable for a ladle cover with smaller size, meanwhile, two jet flow heat exchangers are arranged, the installation positions of the two jet flow heat exchangers are symmetrical relative to the center of the burner, the air stroke inside the single jet flow heat exchanger is increased, the heat exchange area of the single jet flow heat exchanger is increased, each jet flow heat exchanger is connected with an independent combustion air inlet pipe and a combustion air connecting pipe, and the effect of improving the heat exchange efficiency of the jet flow heat exchanger while reducing the volume of the jet flow heat exchanger is realized; 2. the jet flow heat exchanger is provided with a plurality of air chambers which are arranged in a stepped manner, a plurality of jet flow holes which are distributed according to a matrix are formed in the steel plate between the air chambers, so that air is sprayed onto the steel plate between the air chambers and the flue gas chamber at a high speed through the jet flow holes, the heat exchange stroke of the air and the flue gas is increased due to the design of the multi-stage air chambers, and the heat exchange efficiency of the jet flow heat exchanger is improved; 3. the jet flow heat exchanger is provided with 1-6 flue gas chambers, the inner wall of each flue gas chamber is provided with high-efficiency radiation heat exchange fins, the fins can enhance the heat exchange coefficient of the flue gas side, and when the flue gas passes through the flue gas chambers, the heat of the flue gas passes through the steel plate between the flue gas chamber and the air chamber and the fins arranged on the steel plate at the inner side of the flue gas chamber, so that the high-efficiency heat exchange of the flue gas and the air is realized; 4. the equipment has the advantages of simple and compact structure, low maintenance cost and long service life, and greatly reduces the whole operation cost of the roaster.
Drawings
Fig. 1 is a top view of a dual jet heat exchange self-preheating ladle baking apparatus of an embodiment.
Fig. 2 is a front view of a dual jet heat exchange self-preheating ladle baking apparatus according to an embodiment.
Fig. 3 is a front view of an embodiment of a jet heat exchanger with 3 air chambers and 2 flue gas chambers.
Fig. 4 is a top view of an embodiment of a jet heat exchanger.
In the figure: 1-combustion air inlet pipe; 2-jet heat exchanger; 3-combustion air connecting pipes; 4-gas pipe; 5-a burner; 6, ladle cover; 21-an air inlet ring chamber A; 22-air chamber B; 23-air chamber C; 24-air chamber D; 25-an outlet ring chamber E; 26-side walls provided with spray holes; 27-a flue gas chamber; 28-flue gas chamber ribs.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings and examples, which are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, the self-preheating ladle baking equipment with double jet flow heat exchange is provided with a combustion air inlet pipe 1, a jet flow heat exchanger 2, a combustion air connecting pipe 3, a gas pipe 4, a burner 5 and a ladle cover 6. Each jet flow heat exchanger 2 is respectively connected with a combustion air inlet pipe 1 and a combustion air connecting pipe 3, and the two jet flow heat exchangers 2 are symmetrically arranged above a ladle cover 6; the burner is positioned at the center part above the ladle cover and is coaxially arranged with the ladle cover. The burner 5 is connected with the combustion air connecting pipe 3 and the gas pipe 4 respectively.
As shown in fig. 3 and 4, the jet heat exchanger 5 is composed of an air group chamber and 2 flue gas chambers 27 from outside to inside; the air group chambers are annularly distributed outside the flue gas chamber 27, and each air chamber of the air group chamber is in a step shape and is formed by separating side walls provided with spray holes; the air chamber air group chamber consists of an air inlet annular chamber A21, an air chamber B22, an air chamber C23, an air chamber D24 and an air outlet annular chamber E25 from bottom to top; the air inlet ring chamber A is connected with the combustion air inlet pipe 1, and combustion air enters the air inlet ring chamber A through the air inlet pipe 1; the side wall surface of the air inlet ring chamber A connected with the air chamber B is provided with a plurality of jet holes 26 distributed in a matrix, and air in the air inlet ring chamber A flows through the air chamber B at the speed of 10-60m/s through the jet holes and is jetted to the outer wall of the flue gas chamber 27 for high-efficiency jet heat exchange; the side wall surface of the air chamber B connected with the air chamber C is provided with a plurality of jet holes distributed in a matrix, and air in the air chamber B flows through the air chamber C at the speed of 10-60m/s through the jet holes and is jetted to the outer wall of the flue gas chamber 27 for high-efficiency jet heat exchange; the side wall surface of the air chamber C connected with the air chamber D is provided with a plurality of jet holes distributed in a matrix, and air in the air chamber C flows through the air chamber D at the speed of 10-60m/s through the jet holes and is jetted to the outer wall of the flue gas chamber 27 for high-efficiency jet heat exchange; the side wall surface of the air chamber D, which is connected with the air outlet ring chamber E, is provided with a plurality of jet holes distributed in a matrix, and air in the air chamber D flows through the air outlet ring chamber at the speed of 10-60m/s through the jet holes, and is jetted to the outer wall of the smoke chamber 27 for high-efficiency jet heat exchange; the air outlet ring chamber E is connected with the combustion air connecting pipe 3, and air in the air outlet ring chamber E flows through the combustion air connecting pipe 3 and enters the burner 5; the inner wall of the flue gas chamber 27 is a cavity uniformly provided with a plurality of high-efficiency radiation heat exchange ribs 28, one end of each rib is welded on the inner wall of the flue gas chamber, the other end of each rib extends to the inner cavity of the flue gas chamber, and when flue gas passes through the flue gas chamber, the heat of the flue gas exchanges heat with air sprayed to the outer wall of the flue gas chamber at a high speed through the flue gas chamber wall. The actual use data is that the temperature of the air inlet in the flue gas chamber is about 900-1150 ℃, the temperature of the air outlet in the air outlet ring chamber E is about 300-600 ℃, and the temperature of the air outlet in the air outlet ring chamber E is about 150-400 ℃.
As shown in fig. 3 and 4, adjacent air inlet ring chambers are separated from air chambers by side walls provided with jet holes, adjacent air chambers are separated from air outlet ring chambers by side walls provided with jet holes, the longitudinal sections of the side walls provided with jet holes are in a Z shape with horizontal upper ends and lower ends and vertical middle parts, and the air chambers B, C and D are separated into steps with vertical upper ends and lower ends and horizontal middle parts.
The jet flow heat exchangers 2 are symmetrically arranged on two sides of the burner 5 and are coaxially arranged above the ladle cover 6; the flue gas after the ladle roaster heats the ladle is discharged out of the equipment through a flue gas chamber 27 in the jet flow heat exchanger 2; the steel ladle cover 6 is welded with a steel reinforced structure above, and the steel ladle cover structure is connected with a force arm through a connecting flange, so that the lifting action of the steel ladle cover 6 is completed.
Claims (8)
1. The utility model provides a two jet heat transfer's self-preheating ladle toasts equipment, includes combustion air intake pipe, jet heat exchanger, gas pipe, combustor and ladle cover, its characterized in that at least: the two jet flow heat exchangers are respectively arranged at two sides of the burner, the air inlet of each jet flow heat exchanger is connected with a combustion air inlet pipe, the air outlet of each jet flow heat exchanger is connected with the burner through a combustion air connecting pipe, and the burner is positioned at the central part above the ladle cover and is coaxially arranged with the ladle cover;
each jet flow heat exchanger consists of an air group chamber and more than one flue gas chamber, the air group chamber is annularly distributed outside the flue gas chamber, and the air group chamber consists of an air inlet ring chamber, a plurality of air chambers and an air outlet ring chamber; the adjacent air inlet ring chambers and the air chambers are separated by side walls provided with jet holes, the adjacent air chambers and the air outlet ring chambers are separated by side walls provided with jet holes, and the longitudinal sections of the side walls provided with jet holes are in a Z shape with horizontal upper ends and lower ends and vertical middle parts; the interior of each flue gas chamber forms a cavity, the inner wall of the flue gas chamber is provided with a plurality of ribs, one end of each rib is welded on the inner wall of the flue gas chamber, and the other end extends to the inner cavity of the flue gas chamber.
2. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 1, wherein: the number of the combustion air inlet pipes is at least two, and the number of the combustion air connecting pipes is at least two.
3. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 1, wherein: the gas pipe is connected with the gas inlet of the burner.
4. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 1, wherein: the mounting positions of the two jet heat exchangers are symmetrical about the burner center, i.e. the burner is the center of symmetry of the two jet heat exchangers.
5. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 1, wherein: the air group chamber consists of 1 air inlet ring chamber, n air chambers and 1 air outlet ring chamber, wherein n=3-8.
6. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 5, wherein: when n=3, the air group chamber of the jet flow heat exchanger consists of an air inlet ring chamber A, an air chamber B, an air chamber C, an air chamber D and an air outlet ring chamber E from bottom to top; the air inlet ring chamber A is connected with a combustion air inlet pipe; the side wall of the air inlet ring chamber A connected with the air chamber B is provided with a plurality of spray holes distributed according to a matrix; the side wall of the air chamber B connected with the air chamber C is provided with a plurality of spraying holes distributed according to a matrix; the side wall of the air chamber C connected with the air chamber D is provided with a plurality of spray holes distributed according to a matrix; the side wall of the air chamber D, which is connected with the air outlet ring chamber E, is provided with a plurality of spray holes distributed according to a matrix; the air outlet ring chamber E is connected with a combustion air connecting pipe; the air chambers B, C and D are all stepped.
7. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 1, wherein: each jet flow heat exchanger has 1-6 flue gas chambers.
8. The dual jet heat exchange self-preheating ladle baking apparatus as claimed in claim 1, wherein: the side wall with the spray hole is integrally distributed on the outer side of the flue gas chamber, one end of the side wall with the spray hole is connected with the inside of the air group chamber into a substantial whole, and the other end of the side wall with the spray hole is connected with the outer wall of the flue gas chamber into a substantial whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642537.2U CN219561395U (en) | 2023-03-28 | 2023-03-28 | Self-preheating ladle baking equipment with double jet flow heat exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642537.2U CN219561395U (en) | 2023-03-28 | 2023-03-28 | Self-preheating ladle baking equipment with double jet flow heat exchange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219561395U true CN219561395U (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320642537.2U Active CN219561395U (en) | 2023-03-28 | 2023-03-28 | Self-preheating ladle baking equipment with double jet flow heat exchange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219561395U (en) |
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2023
- 2023-03-28 CN CN202320642537.2U patent/CN219561395U/en active Active
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