Secondary heat exchanger assembly

Abstract

The invention belongs to the technical field of heat exchangers, and relates to a secondary heat exchanger assembly which comprises a shell and a heat exchanger, the shell is provided with a containing space, an opening is formed in one side of the shell and communicates with the containing space, a connecting plate is connected to the opening, and the containing space is sealed through the connecting plate; the shell is provided with a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole are respectively communicated with the accommodating space, and the shell is connected with a liquid outlet hole; one end of the coil pipe is a liquid inlet end, and the other end of the coil pipe is a liquid outlet end; the liquid inlet end and the liquid outlet end of the coil pipe are respectively connected to the corresponding mounting parts on the connecting plate; when the connecting plate is connected to the opening of the shell, the coil pipe is located in the containing space. After the structure is adopted, the beneficial effects are that the structure is simplified, the assembly error is reduced, the cost is saved, the production safety can be ensured, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of secondary heat exchangers, and more specifically, relates to a secondary heat exchanger assembly. Background Art

[0002] The main function of a secondary heat exchanger is to exchange heat between two fluids, usually through a solid wall for heat transfer to avoid direct contact between the fluids.

[0003] Working principle of the secondary heat exchanger assembly: Heat transfer: The high-temperature fluid passes through the heat exchanger tube, transferring heat to the solid wall, and the wall then transfers the heat to the low-temperature fluid. Fluid separation: The two fluids flow in independent channels without mixing. Thermal equilibrium: Heat is transferred from the high-temperature fluid to the low-temperature fluid until the temperatures of the two approach equilibrium.

[0004] The traditional heat-conducting tubes of secondary heat exchangers are arranged in a straight line of dozens of tubes, with high welding costs, easy leakage, and high maintenance costs. Therefore, it is necessary to make improvements. Summary of the Invention

[0005] In order to solve the above problems of the prior art, the present invention provides a secondary heat exchanger assembly with a simple structure, low cost, and strong practicability.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] As one aspect of the present invention, a secondary heat exchanger assembly is provided, which includes: a housing having an accommodation space, one side of the housing having an opening that communicates with the accommodation space, a connection plate being connected to the opening, and the connection plate sealing the accommodation space;

[0008] The housing is provided with a first connection hole and a second connection hole, the first connection hole and the second connection hole respectively communicating with the accommodation space, and a liquid outlet hole being connected to the housing, the liquid outlet hole communicating with the accommodation space;

[0009] It further includes a coil, one end of the coil being the liquid inlet end and the other end being the liquid outlet end; the liquid inlet end and the liquid outlet end of the coil are respectively connected to corresponding mounting portions on the connection plate; when the connection plate is connected to the opening of the housing, the coil is located within the accommodation space.

[0010] Optionally, after the liquid inlet end and the liquid outlet end of the coil are respectively connected to the corresponding mounting portions on the connection plate, they respectively extend to the outside of the corresponding mounting portions and then respectively form a first interface and a second interface.

[0011] Optionally, it further includes a smoke baffle provided within the accommodation space.

[0012] Optionally, it further includes a mounting support plate which is connected to the housing.

[0013] Optionally, the mounting support plate is provided with mounting support plate holes.

[0014] Optionally, a liquid collecting area is formed by an outward depression around the liquid outlet hole.

[0015] Optionally, a smoke inlet pipe is connected to the first connection hole, and a smoke exhaust pipe is connected to the second connection hole.

[0016] Optionally, a water outlet nozzle is connected to the liquid outlet hole.

[0017] Optionally, a first water storage plate is further connected to the opening of the housing. The liquid inlet end and the liquid outlet end of the coil are flush with the outer surface of the connection plate. The first water storage plate is located outside the connection plate. The first water storage plate protrudes outward to form a first water storage space and a second water storage space. After the connection plate and the first water storage plate are matched, both the first water storage space and the second water storage space are independent closed spaces. Among them, the liquid inlet end communicates with the first water storage space, the liquid outlet end communicates with the second water storage space, and a first external joint is connected to the first water storage space. A second external joint is connected to the second water storage space.

[0018] Optionally, a second water storage plate is further connected to the opening of the housing. The number of coils is two, and the two coils are arranged at intervals on the connection plate. The liquid inlet end and the liquid outlet end of the coil are flush with the outer surface of the connection plate. The second water storage plate is located outside the connection plate. The second water storage plate protrudes outward to form a third water storage space, a fourth water storage space and a fifth water storage space. After the connection plate and the second water storage plate are matched, the third water storage space, the fourth water storage space and the fifth water storage space are all independent closed spaces. Among them, the liquid inlet end of the first coil communicates with the third water storage space, the liquid outlet end of the first coil communicates with the fifth water storage space, the liquid inlet end of the second coil communicates with the fifth water storage space, and the liquid outlet end of the second coil communicates with the fourth water storage space. A third external joint is connected to the third water storage space. A fourth external joint is connected to the fourth water storage space.

[0019] The beneficial effects of the secondary heat exchanger assembly of the present invention are specifically reflected in: simplifying the structure, reducing assembly errors, thereby saving costs, ensuring production safety, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0021] Figure 1Front structural view of the secondary heat exchanger assembly according to Embodiment 1 of the present invention;

[0022] Figure 2 Rear structural view of the secondary heat exchanger assembly according to Embodiment 1 of the present invention;

[0023] Figure 3 Exploded front structural view of the secondary heat exchanger assembly according to Embodiment 1 of the present invention;

[0024] Figure 4 Exploded rear structural view of the secondary heat exchanger assembly according to Embodiment 1 of the present invention;

[0025] Figure 5 Three-dimensional structural view of the coil according to Embodiment 1 of the present invention;

[0026] Figure 6 Front structural view of the secondary heat exchanger assembly according to Embodiment 2 of the present invention;

[0027] Figure 7 Exploded front structural view of the secondary heat exchanger assembly according to Embodiment 2 of the present invention;

[0028] Figure 8 Exploded rear structural view of the secondary heat exchanger assembly according to Embodiment 2 of the present invention;

[0029] Figure 9 Three-dimensional structural view of the coil according to Embodiment 2 of the present invention;

[0030] Figure 10 Front structural view of the secondary heat exchanger assembly according to Embodiment 3 of the present invention;

[0031] Figure 11 Exploded front structural view of the secondary heat exchanger assembly according to Embodiment 3 of the present invention;

[0032] Figure 12 Exploded rear structural view of the secondary heat exchanger assembly according to Embodiment 3 of the present invention;

[0033] Figure 13 Three-dimensional structural view of the coil according to Embodiment 3 of the present invention. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] A secondary heat exchanger assembly according to an embodiment of the present application is as follows Figure 1 - Figure 5 As shown, it includes: a housing 1, the housing 1 has an accommodation space 11, one side of the housing 1 has an opening, the opening is communicated with the accommodation space 11, a connecting plate 12 is connected to the opening, and the connecting plate 12 seals the accommodation space 11;

[0037] A first connection hole 13 and a second connection hole 14 are opened on the housing 1, the first connection hole 13 and the second connection hole 14 are respectively communicated with the accommodation space 11, and the center lines of the first connection hole 13 and the second connection hole 14 are perpendicular to each other; a smoke inlet pipe 2 is connected to the first connection hole 13, and a smoke exhaust pipe 3 is connected to the second connection hole 14;

[0038] A liquid outlet hole 15 is connected to the housing 1, and the liquid outlet hole 15 is communicated with the accommodation space 11; a water outlet nozzle 4 is connected to the liquid outlet hole 15;

[0039] It further includes a coiled pipe 5, the coiled pipe 5 is formed by winding a straight pipe or a straight flat pipe. Preferably, the cross-sectional shape of the coiled pipe 5 is oval to increase the heat transfer area, and the optimal aspect ratio of the oval cross-section is 4:1; one end of the coiled pipe 5 is a liquid inlet end 51, and the other end of the coiled pipe 5 is a liquid outlet end 52; the liquid inlet end 51 and the liquid outlet end 52 of the coiled pipe 5 are respectively connected to the corresponding mounting parts 121 on the connecting plate 12 and then extend to the outside of the corresponding mounting parts 121, and then the liquid inlet end 51 and the liquid outlet end 52 are respectively formed with a first interface and a second interface matching the corresponding joints; as an example, the mounting part 121 is a mounting hole; when the connecting plate 12 is connected to the opening of the housing 1, the coiled pipe 5 is located in the accommodation space 11; the center line of the middle through hole of the coiled pipe 5 coincides with the center line of the first connection hole 13.

[0040] Furthermore, as Figure 3 shown, in this embodiment, it further includes a smoke baffle 6, the smoke baffle 6 is arranged in the accommodation space 11, and the smoke baffle 6 blocks the upper peripheral area of the coiled pipe 5 to prevent the smoke from directly discharging from the second connection hole 14.

[0041] Furthermore, as Figure 1 shown, in this embodiment, it further includes a mounting support plate 7, the mounting support plate 7 is connected to the housing 1, and the mounting support plate 7 is installed at a preset position to achieve the installation of the secondary heat exchanger assembly; a mounting support plate hole 71 is opened on the mounting support plate 7.

[0042] Furthermore, as Figure 3 shown, in this embodiment, an outward depression is formed in the periphery of the liquid outlet hole 15 to form a liquid collecting area 151, which is convenient for the collection of water vapor condensate.

[0043] In use, cooling water enters the coil 5 from the liquid inlet end 51, circulates through the coil 5, and exits from the liquid outlet end 52. Flue gas enters the housing 1 from the flue gas inlet pipe 2, passes through the smoke baffle 6, and is discharged from the exhaust pipe 3. The steam condensate water in the housing 1 is discharged from the water outlet nozzle 4.

[0044] In this embodiment, coil heat transfer is adopted. For coil heat transfer, only the liquid inlet end 51 and the liquid outlet end of the coil need to be welded to the connecting plate, thus saving costs.

[0045] Embodiment 2

[0046] The difference between Embodiment 2 and Embodiment 1 lies in: different liquid inlet channels. Specifically, as Figures 6 - 9 shown, the liquid inlet end 51 and the liquid outlet end 52 of the coil 5 are flush with the outer surface of the connecting plate 12. A first water storage plate 8 is further connected to the opening of the housing 1, and the first water storage plate 8 is located outside the connecting plate 12; a first water storage space 81 and a second water storage space 82 are formed by outward protrusions on the first water storage plate 8. After the connecting plate 12 and the first water storage plate 8 are matched, both the first water storage space 81 and the second water storage space 82 are independent enclosed spaces; among them, the liquid inlet end 51 communicates with the first water storage space 81, the liquid outlet end 52 communicates with the second water storage space 82, and a first external joint 83 is connected to the first water storage space 81; a second external joint 84 is connected to the second water storage space 82, which is convenient for connection with external devices.

[0047] Embodiment 3

[0048] The difference between Embodiment 3 and Embodiment 1 lies in: different liquid inlet channels and different numbers of coils. Specifically, as Figures 10 - 13 shown, the number of coils 5 is two, and the two coils 5 are arranged at intervals on the connecting plate 12; the liquid inlet end 51 and the liquid outlet end 52 of the coil 5 are flush with the outer surface of the connecting plate 12. A second water storage plate 9 is further connected to the opening of the housing 1, and the second water storage plate 9 is located outside the connecting plate 12; a third water storage space 91, a fourth water storage space 92, and a fifth water storage space 93 are formed by outward protrusions on the second water storage plate 9. After the connecting plate 12 and the second water storage plate 9 are matched, the third water storage space 91, the fourth water storage space 92, and the fifth water storage space 93 are all independent enclosed spaces; among them, the liquid inlet end 51 of the first coil 5 communicates with the third water storage space 91, the liquid outlet end 52 of the first coil 5 communicates with the fifth water storage space 93, the liquid inlet end of the second coil 5 communicates with the fifth water storage space 93, the liquid outlet end of the second coil 5 communicates with the fourth water storage space 92, and a third external joint 94 is connected to the third water storage space 91; a fourth external joint 95 is connected to the fourth water storage space 92, which is convenient for connection with external devices.

[0049] In summary, the secondary heat exchanger assembly of this embodiment simplifies the structure, reduces assembly errors, thereby saving costs and improving the heat transfer efficiency of the secondary heat exchanger. This can not only ensure the safety of production, but also improve the production efficiency.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or their combinations.

[0051] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0052] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the outline of each component itself.

[0053] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatial relative descriptions used herein.

[0054] In addition, it should be noted that the use of words such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, and thus should not be construed as limiting the scope of protection of this application.

[0055] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, terms such as "installed", "provided with", "connected" etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] The above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A secondary heat exchanger assembly, characterized in that, It includes: A housing having an accommodation space. One side of the housing has an opening which is in communication with the accommodation space. A connecting plate is connected to the opening, and the connecting plate seals the accommodation space. The housing is provided with a first connection hole and a second connection hole which are respectively in communication with the accommodation space. A liquid outlet hole is connected to the housing, and the liquid outlet hole is in communication with the accommodation space. It further includes a coiled pipe. One end of the coiled pipe is the liquid inlet end, and the other end of the coiled pipe is the liquid outlet end. The liquid inlet end and the liquid outlet end of the coiled pipe are respectively connected to corresponding mounting parts on the connecting plate. When the connecting plate is connected to the opening of the housing, the coiled pipe is located in the accommodation space.

2. The secondary heat exchanger assembly according to claim 1, wherein After the liquid inlet end and the liquid outlet end of the coiled pipe are respectively connected to the corresponding mounting parts on the connecting plate, they respectively extend to the outside of the corresponding mounting parts and then respectively form a first interface and a second interface.

3. The secondary heat exchanger assembly according to claim 1, wherein It further includes a smoke baffle which is arranged in the accommodation space.

4. The secondary heat exchanger assembly according to claim 1, wherein It further includes a mounting support plate which is connected to the housing.

5. The secondary heat exchanger assembly according to claim 4, wherein The mounting support plate is provided with a mounting support plate hole.

6. The secondary heat exchanger assembly according to claim 1, characterized in that, A liquid collecting area is formed by an outward depression around the liquid outlet hole.

7. The secondary heat exchanger assembly according to claim 1, wherein A smoke inlet pipe is connected to the first connection hole, and a smoke exhaust pipe is connected to the second connection hole.

8. The secondary heat exchanger assembly according to claim 6, wherein A water outlet nozzle is connected to the liquid outlet hole.

9. The secondary heat exchanger assembly according to claim 1, wherein A first water storage plate is further connected to the opening of the housing. The liquid inlet end and the liquid outlet end of the coiled pipe are flush with the outer surface of the connecting plate. The first water storage plate is located outside the connecting plate. The first water storage plate protrudes outward to form a first water storage space and a second water storage space. After the connecting plate cooperates with the first water storage plate, both the first water storage space and the second water storage space are independent closed spaces. Among them, the liquid inlet end is in communication with the first water storage space, the liquid outlet end is in communication with the second water storage space, and a first external joint is connected to the first water storage space. A second external joint is connected to the second water storage space.

10. The secondary heat exchanger assembly according to claim 1, characterized in that, A second water storage plate is further connected to the opening of the housing. The number of coiled pipes is two, and the two coiled pipes are arranged at intervals on the connecting plate. The liquid inlet end and the liquid outlet end of the coiled pipe are flush with the outer surface of the connecting plate. The second water storage plate is located outside the connecting plate. The second water storage plate protrudes outward to form a third water storage space, a fourth water storage space and a fifth water storage space. After the connecting plate cooperates with the second water storage plate, the third water storage space, the fourth water storage space and the fifth water storage space are all independent closed spaces. Among them, the liquid inlet end of the first coiled pipe is in communication with the third water storage space, the liquid outlet end of the first coiled pipe is in communication with the fifth water storage space, the liquid inlet end of the second coiled pipe is in communication with the fifth water storage space, the liquid outlet end of the second coiled pipe is in communication with the fourth water storage space, and a third external joint is connected to the third water storage space. A fourth external joint is connected to the fourth water storage space.

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