CN216448672U

CN216448672U - Suspension type heat exchanger

Info

Publication number: CN216448672U
Application number: CN202122749524.9U
Authority: CN
Inventors: 刘艳丽; 李传凯; 刘玉; 刘超
Original assignee: Shanghai Qiyao Thermal Energy Engineering Co ltd; Shanghai Marine Diesel Engine Research Institute
Current assignee: Shanghai Qiyao Thermal Energy Engineering Co ltd; 711th Research Institute of CSIC
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-06
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a suspension type heat exchanger. Suspension type heat exchanger includes the core, expansion joint and casing, the core has core import and core export, core import and core export are along first direction mutual disposition, the outside at the core is established to the casing cover, the casing has first mouth and second mouth, first mouth and second mouth are along second direction mutual disposition, second direction and first direction are criss-cross, one side and one side fixed connection of core of casing edge first direction, the casing passes through the expansion joint along the opposite side of first direction and is connected with the opposite side of core, the energy-efficient deformation that produces of expansion, with the thermal deformation that absorbs casing and/or core and be heated the production. According to the suspension type heat exchanger, the expansion joint absorbs the thermal expansion amount between the shell and the core body, the expansion displacement direction of the suspension type heat exchanger is flexibly activated in the using process of the suspension type heat exchanger, the suspension type heat exchanger is prevented from being damaged, and the operation reliability and the service life of the suspension type heat exchanger cannot be influenced.

Description

Suspension type heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a suspension type heat exchanger.

Background

The heat exchanger, such as an air preheater, is a heat exchange device which utilizes the heat of flue gas to heat air, improves the thermal performance of a boiler and reduces the heat loss. The heat exchanger can be with the flue gas heat that the boiler tail was discharged, conducts to the air through heat exchange tube bank, preheats the air to certain temperature, improves boiler thermal efficiency. However, the existing heat exchanger is directly supported on a boiler steel structure beam. When the heat exchanger is under the action of high-temperature flue gas, the heat exchanger can generate thermal deformation, and the friction force between the heat exchanger and a steel structure beam of the boiler limits the free expansion of the heat exchanger, so that the heat exchanger is easily damaged, and the reliability of operation and the service life are influenced.

Accordingly, there is a need to provide a suspended heat exchanger to at least partially address the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content of the present invention is not intended to define key features or essential features of the claimed solution, nor is it intended to be used to limit the scope of the claimed solution.

To at least partially solve the above problems, according to an aspect of the present invention, there is provided a suspension heat exchanger including:

a core having a core inlet and a core outlet, the core inlet and the core outlet being oppositely disposed along a first direction;

an expansion joint;

a housing fitted over the core, the housing having a first port and a second port disposed opposite to each other in a second direction, the second direction crossing the first direction,

one side of the shell along the first direction is fixedly connected with one side of the core, the other side of the shell along the first direction is connected with the other side of the core through the expansion joint, and the expansion joint can deform to absorb thermal deformation generated by heating of the shell and/or the core.

According to the suspension type heat exchanger, the suspension type heat exchanger comprises a core body, an expansion joint and a shell, wherein the core body is provided with a core body inlet and a core body outlet, the core body inlet and the core body outlet are oppositely arranged along a first direction, the shell is sleeved outside the core body, the shell is provided with a first port and a second port, the first port and the second port are oppositely arranged along a second direction, the second direction is crossed with the first direction, one side of the shell along the first direction is fixedly connected with one side of the core body, the other side of the shell along the first direction is connected with the other side of the core body through the expansion joint, and the expansion joint can deform to absorb thermal deformation generated by heating of the shell and/or the core body. Therefore, the expansion joint absorbs the thermal expansion amount between the shell and the core body, the expansion joint cannot limit the free expansion of the suspension type heat exchanger, particularly, the expansion joint cannot limit the free expansion of the shell and/or the core body, the thermal expansion direction of the suspension type heat exchanger becomes multidirectional, the expansion displacement direction of the suspension type heat exchanger is flexible in the using process of the suspension type heat exchanger, the large thermal expansion amount and the large thermal deformation in a high-temperature operation environment are reduced, the damage to the suspension type heat exchanger is avoided, and the operation reliability and the service life of the suspension type heat exchanger cannot be influenced.

Optionally, the core further has a hollow inlet section and an outlet section, the inlet section having the core inlet, the outlet section having the core outlet, the inlet section being fixedly connected to the shell, and the outlet section being connected to the shell via the expansion joint.

Optionally, the suspended heat exchanger further comprises a sealing plate for fixedly connecting the housing and the inducer.

Optionally, the suspension heat exchanger further includes a frame, the frame is sleeved outside the outlet section and connected to the outlet section, one end of the expansion joint along the first direction is connected to the frame, and the other end of the expansion joint along the first direction is connected to the other side of the housing.

Optionally, the core further has an inlet tube sheet, an outlet tube sheet, and a plurality of tube bundles connected with the inlet section through the inlet tube sheet, the plurality of tube bundles connected with the outlet section through the outlet tube sheet.

Optionally, the inlet tube sheet and the outlet tube sheet are each configured as a perforated plate, a plurality of tube bundles pass through the plurality of holes of the inlet tube sheet and the plurality of holes of the outlet tube sheet, respectively, and the plurality of tube bundles are in communication with both the core inlet and the core outlet.

Optionally, the first port and the second port are both located between the inlet tube sheet and the outlet tube sheet in the first direction.

Optionally, the suspended heat exchanger further comprises at least two hangers, two of the at least two hangers being connected to the inlet section and the outlet section, respectively.

Optionally, the inlet section and the outlet section are trapezoidal in cross-sectional shape taken along the first direction.

Optionally, the suspended heat exchanger further comprises a thermal insulation material, the thermal insulation material being located between the expansion joint and the core.

Drawings

The following drawings of the utility model are included to provide a further understanding of the utility model. The drawings illustrate embodiments of the utility model and, together with the description, serve to explain the principles and apparatus of the utility model. In the drawings, there is shown in the drawings,

fig. 1 is a front view of a pendant-type heat exchanger according to a first preferred embodiment of the utility model;

FIG. 2 is a front view of the core shown in FIG. 1;

FIG. 3 is a partial front view of the suspended heat exchanger shown in FIG. 1;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

Description of reference numerals:

100: the suspended heat exchanger 110: core body

111: core inlet 112: core outlet

113: inlet section 114: outlet section

115: inlet tube sheet 116: outlet tube sheet

117: the tube bundle 118: middle tube plate

130: the expansion joint 131: one end of the expansion joint

132: the other end 150 of the expansion joint: shell body

151: the first port 152: second port

153: one side 154 of the housing: the other side of the shell

161: a closing plate 162: frame structure

163: first connector 164: second connecting piece

165: inlet suspension 166: outlet suspension member

167: inlet boom 168: outlet boom

169: thermal insulation material

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the utility model is not limited to the specific details set forth herein as are known to those of skill in the art. The following detailed description of the preferred embodiments of the present invention, however, the present invention may have other embodiments in addition to the detailed description, and should not be construed as being limited to the embodiments set forth herein.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model, and that the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for purposes of illustration only and are not limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

In the following, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the utility model and do not limit the utility model.

Fig. 1 shows a front view of a suspension heat exchanger 100 according to a preferred embodiment of the present invention, and the suspension heat exchanger 100 according to the present invention is a special type of heat exchanger, and the suspension heat exchanger 100 can heat air using heat of flue gas.

Specifically, the suspended heat exchanger 100 includes a core 110, an expansion joint 130, and a shell 150, and the shell 150 is sleeved outside the core 110. The shell 150 is used for flowing flue gas, and the core 110 is used for flowing air or other heat exchange medium (for convenience of description, air is used hereinafter). The housing 150 is configured to be hollow, and the core 110 may extend through the housing 150. The flue gas and air can exchange heat in the pendant-type heat exchanger 100.

The core 110 may be open on both sides in the first direction D1. The core 110 has a core inlet 111 and a core outlet 112, and the core inlet 111 and the core outlet 112 are oppositely arranged along the first direction D1. Air S1 can enter the interior of the pendant heat exchanger 100 through the core inlet 111 and exit through the core outlet 112. The core 110 may be configured in a substantially cylindrical structure, and the first direction D1 may be substantially parallel to the axial direction of the core 110.

The shell 150 is disposed outside the core 110. The housing 150 may be open at both ends in the second direction D2. The housing 150 has a first port 151 and a second port 152, the first port 151 and the second port 152 being oppositely disposed along a second direction D2, and the second direction D2 may cross the first direction D1. Alternatively, the second direction D2 and the first direction D1 may be perpendicular. The second direction D2 may be substantially parallel to the radial direction of the core 110. The flue gas S2 can enter the interior of the pendant heat exchanger 100 through the first port 151 and exit through the second port 152. Alternatively, the flue gas S2 can enter the interior of the pendant heat exchanger 100 through the second port 152 and exit through the first port 151. The flow direction of the flue gas S2 in the pendant heat exchanger 100 can be adjusted according to actual conditions, which is not limited in this embodiment. The circulation direction of the flue gas S2 and the air S1 is formed to form convective heat exchange.

One side 153 of the housing 150 in the first direction D1 is fixedly coupled to one side of the core 110. Thereby allowing the shell 150 and the core 110 to be coupled together and the shell 150 to support the core 110. The other side 154 of the shell 150 in the first direction D1 is connected to the other side of the core 110 by an expansion joint 130. The expansion joint 130 is sealingly connected to both the shell 150 and the core 110.

The expansion joint 130 is capable of deformation. For example, the expansion joint 130 may be made of a flexible material to be capable of being deformed in multiple directions. When the flue gas S2 and the air S1 are heat exchanged in the suspension heat exchanger 100, the shell 150 and/or the core 110 can be heated to generate thermal deformation. The expansion joint 130 can absorb thermal deformation of the shell 150 and/or the core 110 caused by heat. As such, the expansion joints 130 do not limit the free expansion of the pendant heat exchanger 100, and in particular, the expansion joints 130 do not limit the free expansion of the shell 150 and/or the core 110, preventing damage to the pendant heat exchanger 100 without affecting the reliability and useful life of the pendant heat exchanger 100 in operation.

Further, as shown in FIG. 2, the core 110 also has a hollow inlet section 113 and an outlet section 114. The inlet section 113 and the outlet section 114 are located on both sides of the core 110 in the first direction D1, respectively. The entrance section 113 and the exit section 114 are oppositely arranged along the first direction D1. The inlet section 113 has a core inlet 111 and the outlet section 114 has a core outlet 112, and air S1 can enter the interior of the suspension heat exchanger 100 through the inlet section 113 and exit through the outlet section 114. Inlet section 113 is fixedly attached to housing 150, and preferably inlet section 113 is fixedly attached to housing 150 by welding. The outlet section 114 is connected to the housing 150 by an expansion joint 130. The inducer 113 may be fixedly coupled to a side 153 of the housing 150. The outlet section 114 is connected to the other side 154 of the housing 150 by an expansion joint 130. In this way, the core 110 and the shell 150 are easily connected together, and the manufacturing and production are also easily performed.

Of course, in an embodiment not shown, the inlet section 113 may be connected to the housing 150 via the expansion joint 130 and the outlet section 114 may be fixedly connected to the housing 150, as the case may be. Thereby flexibly adapting to different situations.

The core 110 also has an inlet tube sheet 115, an outlet tube sheet 116, and a plurality of tube bundles 117 connecting the inlet tube sheet 115 and the outlet tube sheet 116. The length direction of tube bundle 117 is substantially parallel to first direction D1. A plurality of tube bundles 117 are spaced apart along second direction D2. Tube bundle 117 has inlet tube sheet 115 and outlet tube sheet 116 on both sides in first direction D1, respectively. Inlet tube sheet 115 may be embedded within inlet section 113 and inlet tube sheet 115 may be attached to inlet section 113 by welding. A plurality of tube bundles 117 are connected to inlet section 113 by inlet tube sheet 115. One side of plurality of tube bundles 117 in first direction D1 is connected to inlet section 113 by inlet tube sheet 115. The outlet tube sheet 116 may be embedded inside the outlet section 114, and the outlet tube sheet 116 may be connected to the outlet section 114 by welding. A plurality of tube bundles 117 are connected to the outlet section 114 by an outlet tube sheet 116. The other side of plurality of tube bundles 117 in first direction D1 may be connected to outlet section 114 by welding.

Alternatively, the inlet tube sheet 115 may be configured as a perforated plate, and the inlet tube sheet 115 may have a plurality of holes. The plurality of tube bundles 117 pass through the plurality of holes of the inlet tube sheet 115, respectively, to be coupled with the inlet tube sheet 115. Thus, a plurality of tube bundles 117 are in communication with both the interior of inlet section 113 and core inlet 111. The outlet tube sheet 116 may be configured as a perforated plate and the outlet tube sheet 116 may have a plurality of holes. The plurality of tube bundles 117 pass through the plurality of holes of the outlet tube sheet 116, respectively, to be connected with the outlet tube sheet 116.

To ensure the heat exchange performance of the pendant-type heat exchanger 100, the first port 151 is located between the inlet tube sheet 115 and the outlet tube sheet 116 in the first direction D1, and the second port 152 is located between the inlet tube sheet 115 and the outlet tube sheet 116 in the first direction D1. The first port 151 and the second port 152 may each be provided in correspondence with the plurality of tube bundles 117. In this way, it is ensured that the flue gas S2 can exchange heat with the air S1 in the plurality of tube bundles 117, preventing the flue gas S2 from leaking into the inlet section 113 and the outlet section 114.

A plurality of tube bundles 117 communicate with both the interior of the outlet section 114 and the core outlet 112. Air S1 may enter inlet section 113 through core inlet 111 and enter plurality of tube bundles 117. The flue gas S2 may enter the areas in the inlet tube sheet 115 and the outlet tube sheet 116 through the first port 151. The air S1 and the flue gas S2 are capable of exchanging heat in the region between the inlet tube sheet 115 and the outlet tube sheet 116. The heat-exchanged air is discharged through the outlet section 114, and the heat-exchanged flue gas S2 may be discharged through the second port 152.

As shown in connection with fig. 1, the core 110 further includes at least one intermediate tube sheet 118, the intermediate tube sheet 118 being located between the inlet tube sheet 115 and the outlet tube sheet 116 in the first direction D1. The middle tube sheet 118 may be configured as a perforated plate, and the middle tube sheet 118 may have a plurality of holes. The plurality of tube bundles 117 pass through the plurality of holes of the middle tube sheet 118, respectively, to be connected with the middle tube sheet 118. The intermediate tube sheet 118 is thereby able to support the weight of the middle of the plurality of tube bundles 117.

Preferably, the cross-sectional shape of inducer 113 taken along first direction D1 is trapezoidal. The size of core inlet 111 in second direction D2 is smaller than the size between inlet tubesheets 115, ensuring that air S1 is able to enter multiple tube bundles 117 sufficiently to prevent accumulation of air S1 at inlet section 113. The cross-sectional shape of the outlet section 114 taken along the first direction D1 is trapezoidal. The size of the core outlet 112 in the second direction D2 is smaller than the size between the outlet tubesheets 116, ensuring that the air S1 in the plurality of tube bundles 117 is fully admitted into the outlet section 114.

Further, as shown in fig. 1, the pendant-type heat exchanger 100 further includes a cover plate 161, and the cover plate 161 may be configured in a substantially plate-like structure. The dimension of the core 110 in the second direction D2 is smaller than the dimension of the shell 150. A closure plate 161 is provided for fixedly connecting the housing 150 to the inducer 113. The plate 161 may be attached to the inducer 113 by welding, or the plate 161 may be attached to the side 153 of the housing 150 by welding. Thus, the cover plate 161 is hermetically connected to both the housing 150 and the core 110. Thus, the flue gas S2 and the air S1 are sufficiently heat exchanged in the suspended heat exchanger 100 to facilitate the core 110 and the shell 150 being secured together.

Preferably, the suspended heat exchanger 100 further comprises at least two hangers for suspending the suspended heat exchanger 100. The at least two suspension elements comprise an inlet suspension element 165 and an outlet suspension element 166, the inlet suspension element 165 and the outlet suspension element 166 being oppositely arranged along a first direction D1. Inlet suspension 165 is connected to inlet section 113 and outlet suspension 166 is connected to outlet section 114, thereby maintaining balance. An inlet hanger 165 may be connected to the inlet boom 167 and an outlet hanger 166 may be connected to the outlet boom 168 to suspend the suspended heat exchanger 100. In this way, the core 110 is directly suspended, and the amount of thermal expansion of the core 110 of the suspended heat exchanger 100 is absorbed by the displacement of the inlet boom 167 and the outlet boom 168.

As shown in fig. 3 and 4, the suspended heat exchanger 100 further includes a frame 162, and the frame 162 is disposed outside the outlet section 114 and connected to the outlet section 114. A frame 162 is disposed around the outlet section 114. The frame 162 may be connected to the outlet section 114 by welding. One end 131 of the expansion joint 130 in the first direction D1 is connected to the frame 162. One end 131 of the expansion joint 130 may be connected to the frame 162 by a first connector 163. Thereby facilitating installation.

The other end 132 of the expansion joint 130 in the first direction D1 is connected to the other side 154 of the housing 150. The other end 132 of the expansion joint 130 is connected to the other side 154 of the housing 150 by a second connector 164. Thereby facilitating installation. Thus, the sealability between the expansion joint 130 and the housing 150 is ensured, and the sealability between the expansion joint 130 and the core 110 is also ensured.

The pendant heat exchanger 100 also includes insulation 169, the insulation 169 being located between the expansion joint 130 and the core 110. The insulation 169 is positioned inside the expansion joint 130 in the second direction D2. Preferably, insulation 169 is located between expansion joint 130 and outlet section 114. Thereby, the temperature of the core 110 is secured, and the expansion joint 130 can be prevented from being excessively heated.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications fall within the scope of the present invention as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A suspended heat exchanger, comprising:

an expansion joint;

2. A suspended heat exchanger as set forth in claim 1, wherein said core further has a hollow inlet section with said core inlet and an outlet section with said core outlet, said inlet section being fixedly connected to said shell, said outlet section being connected to said shell through said expansion joint.

3. The overhead heat exchanger of claim 2, further comprising a cover plate for fixedly connecting the shell and the inducer.

4. The overhead heat exchanger of claim 2, further comprising a frame that fits over and connects to the outlet section, wherein one end of the expansion joint in the first direction connects to the frame, and the other end of the expansion joint in the first direction connects to the other side of the housing.

5. A suspended heat exchanger as set forth in claim 2, wherein said core further has an inlet tube sheet, an outlet tube sheet, and a plurality of tube bundles connected with said inlet section through said inlet tube sheet, said plurality of tube bundles connected with said outlet section through said outlet tube sheet.

6. The overhead heat exchanger of claim 5, wherein the inlet tube sheet and the outlet tube sheet are each configured as perforated plates, a plurality of tube bundles pass through the plurality of holes of the inlet tube sheet and the plurality of holes of the outlet tube sheet, respectively, and the plurality of tube bundles are in communication with both the core inlet and the core outlet.

7. A suspended heat exchanger as set forth in claim 6 wherein said first and second ports are each located between said inlet and outlet tube sheets in the first direction.

8. The overhead heat exchanger of claim 2, further comprising at least two hangers, two of the at least two hangers connected to the inlet section and the outlet section, respectively.

9. A suspended heat exchanger as set forth in claim 2 wherein said inlet and outlet sections are trapezoidal in cross-sectional shape taken in the first direction.

10. The overhead heat exchanger of claim 1, further comprising an insulation material between the expansion joint and the core.