CN213578848U - Boiler heat exchange tube - Google Patents
Boiler heat exchange tube Download PDFInfo
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- CN213578848U CN213578848U CN202022567976.0U CN202022567976U CN213578848U CN 213578848 U CN213578848 U CN 213578848U CN 202022567976 U CN202022567976 U CN 202022567976U CN 213578848 U CN213578848 U CN 213578848U
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- heat exchange
- exchange tube
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- boiler heat
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Abstract
The utility model relates to a boiler heat exchange tube, which comprises a heat exchange tube main body; the two ends of the heat exchange tube main body are provided with an air inlet and an air outlet; the air inlet and the air outlet are connected through a bent pipe, and joints are respectively arranged at the air inlet and the air outlet; a first convex edge is arranged on the outer side of the joint; a second convex edge is arranged on the outer side of the pipe orifice of the bent pipe; the outer sides of the first convex edge and the second convex edge are provided with a clamp; an elastic lining is arranged on the inner side of the hoop; the elastic lining is respectively in contact connection with the first convex edge and the second convex edge. The utility model discloses in because heat exchange tube and return bend material are different, it is different by the thermal expansion coefficient, consequently, sets up the clamp between heat exchange tube and elbow fitting, the built-in elasticity inside lining of clamp. If the temperature is higher, the expansion degree of the heat exchange tube is larger, and the expansion degree of the bent tube is smaller, the two joints can move in the clamp, so that a corresponding space is provided for the expansion difference, and the heat exchange tube and the bent tube are prevented from cracking due to expansion contact.
Description
Technical Field
The utility model relates to a heat exchange tube, concretely relates to boiler heat exchange tube belongs to boiler technical field.
Background
The incineration method has an advantage that combustible organic substances can be decomposed at high temperature as an oxidation combustion reaction at high temperature, and the reduction amount is large. However, in the incineration process of the high-fluorine-containing hazardous wastes, the generated high-temperature flue gas contains high-concentration HF, which can cause serious corrosion to the heat exchange surface of the waste heat boiler and influence the safe operation of the waste heat boiler. In the technical specification of hazardous waste centralized incineration disposal engineering construction (HJ/T176-2005), the hazardous waste disposal system generally requires 6.1.3, and the waste heat boiler for cooling the hazardous waste incineration system which is used for treating the hazardous waste with higher fluorine content or more than 5% of chlorine content is not required. The method is contrary to the national policy of continuously deepening energy conservation and emission reduction in China, so that the technical problem of fluorine corrosion in the process of utilizing waste heat generated by burning high-fluorine-containing solid waste is solved, the heat of the flue gas is recovered, the steam is generated to realize energy recycling, the temperature of the flue gas is reduced, the water consumption of a quench tower is reduced, and the method has important significance for long-term development of the fluorine chemical industry. In the existing structure, a heat exchange pipe is generally connected to a water jacket of a boiler, and the heat exchange pipe is heated to exchange heat with a liquid medium in the heating pipe. The heat exchange tube in the prior art is made of iron, and the heat conduction performance of the heat exchange tube is lower than that of metals such as copper and aluminum, so that the heating cost is increased, and meanwhile, the waste of fuel is caused. If the heat exchange tube is made of copper, the water jacket is also made of iron, and the thermal expansion coefficient of the copper is larger than that of the iron, so that the phenomenon of cracking is easily caused at the welding position of the copper heat exchange tube and the water jacket, and the service life of the boiler is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at overcoming the defect among the prior art, provide a boiler heat exchange tube, simple structure is reasonable, difficult breakage, long service life, it is firm durable.
In order to achieve the above purpose, the utility model provides a boiler heat exchange tube, which comprises a heat exchange tube main body; the two ends of the heat exchange tube main body are provided with an air inlet and an air outlet; the air inlet and the air outlet are connected through a bent pipe, and joints are respectively arranged at the air inlet and the air outlet; a first convex edge is arranged on the outer side of the joint; a second convex edge is arranged on the outer side of the pipe orifice of the bent pipe; the outer sides of the first convex edge and the second convex edge are provided with hoops; an elastic lining is arranged on the inner side of the hoop; the elastic lining is respectively in contact connection with the first convex edge and the second convex edge.
Preferably, a sealing ring is arranged between the elastic linings on the two sides; the edges of the first convex edge and the second convex edge are in contact with and abut against the sealing ring; the first convex edge and the second convex edge are respectively arranged around the joint and the outer side of the elbow.
Preferably, the elastic lining is positioned on the inner side wall of the hoop; the elastic lining is connected with the inner side wall of the hoop through a spring.
Preferably, the clamp comprises two symmetrical semicircular rings; the two semicircular rings are hinged through a hinge.
Preferably, the end parts of the two semicircular rings are respectively provided with a screwing end; the two screwing ends are connected through screwing bolts.
Preferably, an elbow wear-resistant cover is arranged at the bending part of the elbow; the elbow anti-abrasion cover comprises an arc-shaped bottom plate matched with the bending part; the inner side of the arc-shaped bottom plate is provided with a connecting plate.
Preferably, the connecting plate is welded with the elbow.
The utility model discloses in because heat exchange tube and return bend material are different, it is different by the thermal expansion coefficient, consequently, sets up the clamp between heat exchange tube and elbow fitting, the built-in elasticity inside lining of clamp. If the temperature is higher, the expansion degree of the heat exchange tube is larger, and the expansion degree of the bent tube is smaller, the two joints can move in the clamp, so that a corresponding space is provided for the expansion difference, and the heat exchange tube and the bent tube are prevented from cracking due to expansion contact.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
Fig. 2 is a schematic sectional view of the present invention.
In the figure, 1 is a heat exchange tube main body, 2 is a bent tube, 3 is a joint, 3.1 is a first convex edge, 2.1 is a second convex edge, 4 is a hoop, 5 is an elastic lining, 6 is a sealing ring, 7 is a screwing end, and 8 is a screwing bolt.
Detailed Description
The technical solution 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 obviously, the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art
Referring to fig. 1 to 2, a heat exchange tube for a boiler includes a heat exchange tube main body 1; the two ends of the heat exchange tube main body 1 are provided with an air inlet and an air outlet; the air inlet and the air outlet are connected through a bent pipe 2, and joints 3 are respectively arranged at the air inlet and the air outlet; a first convex edge 3.1 is arranged on the outer side of the joint 3; a second convex edge 2.1 is arranged on the outer side of the pipe orifice of the bent pipe 2; the outer sides of the first convex edge 3.1 and the second convex edge 2.1 are provided with a hoop 4; an elastic lining 5 is arranged on the inner side of the hoop 4; the elastic lining 5 is respectively connected with the first convex edge 3.1 and the second convex edge 2.1 in a contact way.
Further, a sealing ring 6 is arranged between the elastic linings 5 on the two sides; the edges of the first convex edge 3.1 and the second convex edge 2.1 are in contact with and abut against the sealing ring 6; the first convex edge and the second convex edge are respectively arranged around the joint and the outer side of the elbow.
Specifically, since the heat exchange tube body 1 is made of a copper material and has a higher expansion coefficient than the bent tube, the joint is easily broken after the heat exchange tube body is thermally expanded. With the solution of the present embodiment, after the heat exchange tube body 1 deforms, the clamp has a space for deformation inside because the clamp has an elastic lining inside, rather than rigid contact.
Furthermore, the elastic lining 5 is positioned on the inner side wall of the hoop 4; the elastic lining 5 is connected with the inner side wall of the hoop through a spring.
In particular, in this embodiment, the sealing ring 6 can ensure the air tightness between the two joints, and ensure that the smoke does not overflow from between the two joints.
Furthermore, the clamp 4 comprises two symmetrical semicircular rings; the two semicircular rings are hinged through a hinge.
Furthermore, the end parts of the two semicircular rings are respectively provided with a screwing end 7; the two screwing ends 7 are connected through screwing bolts 8.
Furthermore, an elbow anti-abrasion cover is arranged at the bending part of the elbow; the elbow anti-abrasion cover comprises an arc-shaped bottom plate matched with the bending part; the inner side of the arc-shaped bottom plate is provided with a connecting plate.
Furthermore, the connecting plate is welded with the elbow.
Specifically, in this embodiment, elbow abrasionproof cover includes the curved bottom plate of the flexion matched with the coiled pipe, and the bottom plate inboard is equipped with three connecting plates that are triangle-shaped and arrange, and the connecting plate links to each other with the flexion welding, and the bottom plate is followed outward and is equipped with the cover plate perpendicularly, can ensure the safe in utilization of the flexion of coiled pipe, and the wearing and tearing damage when avoiding the installation.
Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalent solutions without departing from the spirit and scope of the present invention, which should be covered by the claims of the present invention.
Claims (7)
1. A boiler heat exchange tube comprises a heat exchange tube main body; the two ends of the heat exchange tube main body are provided with an air inlet and an air outlet; air inlet and gas outlet between meet through the return bend, its characterized in that: the air inlet and the air outlet are respectively provided with a joint; a first convex edge is arranged on the outer side of the joint; a second convex edge is arranged on the outer side of the pipe orifice of the bent pipe; the outer sides of the first convex edge and the second convex edge are provided with hoops; an elastic lining is arranged on the inner side of the hoop; the elastic lining is respectively in contact connection with the first convex edge and the second convex edge.
2. A boiler heat exchange tube according to claim 1, wherein: a sealing ring is arranged between the elastic linings on the two sides; the edges of the first convex edge and the second convex edge are in contact with and abut against the sealing ring; the first convex edge and the second convex edge are respectively arranged around the joint and the outer side of the elbow.
3. A boiler heat exchange tube according to claim 1, wherein: the elastic lining is positioned on the inner side wall of the hoop; the elastic lining is connected with the inner side wall of the hoop through a spring.
4. A boiler heat exchange tube according to claim 1, wherein: the clamp comprises two semicircular rings which are symmetrical with each other; the two semicircular rings are hinged through a hinge.
5. The boiler heat exchange tube of claim 4, wherein: the end parts of the two semicircular rings are respectively provided with a screwing end; the two screwing ends are connected through screwing bolts.
6. A boiler heat exchange tube according to claim 1, wherein: an elbow anti-abrasion cover is arranged at the bending part of the elbow; the elbow anti-abrasion cover comprises an arc-shaped bottom plate matched with the bending part; the inner side of the arc-shaped bottom plate is provided with a connecting plate.
7. The boiler heat exchange tube of claim 6, wherein: the connecting plate is welded with the elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022567976.0U CN213578848U (en) | 2020-11-09 | 2020-11-09 | Boiler heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022567976.0U CN213578848U (en) | 2020-11-09 | 2020-11-09 | Boiler heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213578848U true CN213578848U (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022567976.0U Active CN213578848U (en) | 2020-11-09 | 2020-11-09 | Boiler heat exchange tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213578848U (en) |
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2020
- 2020-11-09 CN CN202022567976.0U patent/CN213578848U/en active Active
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