CN114234675A - Slotted partition plate structure for reducing temperature difference of tube plate and heat exchanger - Google Patents
Slotted partition plate structure for reducing temperature difference of tube plate and heat exchanger Download PDFInfo
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- CN114234675A CN114234675A CN202210074348.XA CN202210074348A CN114234675A CN 114234675 A CN114234675 A CN 114234675A CN 202210074348 A CN202210074348 A CN 202210074348A CN 114234675 A CN114234675 A CN 114234675A
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- Prior art keywords
- heat exchanger
- tube
- shell
- tube plate
- temperature difference
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a slotted baffle structure for reducing the temperature difference of a tube plate and a heat exchanger, wherein the slotted baffle structure for reducing the temperature difference of the tube plate comprises a baffle body, wherein a plurality of first through holes are arranged on the baffle body, and each first through hole is used for penetrating through a heat exchange tube; a side surface of the separator body is provided with a groove portion capable of allowing a fluid to flow in. The slotted partition plate structure for reducing the temperature difference of the tube plate is abutted against one side close to the shell pass of the tube plate, the medium on the shell pass side is limited to flow in the groove part, and even a dead zone is formed in the groove part, so that the thermal resistance on the shell pass side is greatly improved, the temperature difference on two sides of the tube plate is reduced, the thermal stress of the tube plate is reduced, and the structural strength of the tube plate of the heat exchanger is improved.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a slotted partition plate structure for reducing temperature difference of a tube plate and a heat exchanger.
Background
The heat exchanger has firm structure, simple manufacture and higher reliability, and is a device used in a large number of petrochemical devices. Among the components of the heat exchanger, the tube plate is the most important and the most complex component, and the function of the heat exchanger is to arrange heat exchange tubes, divide tube side and shell side fluid, avoid the mixing of cold fluid and hot fluid, and be influenced by tube side, shell side pressure and thermal stress caused by tube shell side temperature difference.
In normal operation of equipment, the influence of thermal stress on the tube plate is large, particularly when the operation temperature difference between a tube side and a shell side is large, the temperature difference stress value of the heat exchanger tube plate is increased, and when the temperature difference stress value is superposed with the pressure stress and exceeds an allowable stress value, plastic deformation can occur to influence the normal use of the tube plate. When the heat exchanger is driven and stopped, the temperature of the heat exchange tube changes rapidly due to the slow temperature change of the tube plate, and large thermal stress is generated at the joint of the heat exchange tube and the tube plate. When a rapid stop occurs or the temperature of the intake air changes suddenly, the thermal stress tends to cause the tube sheet and the heat exchange tubes to break at the junction.
Therefore, how to effectively reduce the thermal stress intensity value is the key for improving the tube plate intensity, and has very important significance for improving the safety of the heat exchanger.
Therefore, the inventor provides a slotted baffle structure and a heat exchanger for reducing the temperature difference of a tube plate by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a slotted baffle structure for reducing the temperature difference of a tube plate and a heat exchanger, wherein the slotted baffle structure for reducing the temperature difference of the tube plate is abutted against one side of the tube plate close to a shell side, a medium on the shell side is limited to flow in a groove part, and even a dead zone is formed in the groove part, so that the thermal resistance on the shell side is greatly improved, the temperature difference on two sides of the tube plate is reduced, the thermal stress of the tube plate is reduced, and the structural strength of the tube plate of the heat exchanger is improved.
The invention aims to realize the slotted partition plate structure for reducing the temperature difference of the tube plate, which comprises a partition plate body, wherein a plurality of first through holes are arranged on the partition plate body, and each first through hole is used for penetrating through a heat exchange tube; a side surface of the separator body is provided with a groove portion capable of allowing a fluid to flow in.
In a preferred embodiment of the present invention, an area of the groove portion is greater than 60% of an area of the side surface of the partition body.
In a preferred embodiment of the present invention, the groove portion includes a plurality of linear grooves arranged in parallel at intervals, and two ends of each linear groove are open; each first through hole is arranged at each linear groove in a penetrating manner.
In a preferred embodiment of the present invention, the recessed portion includes a spiral groove, and each of the first through holes is disposed through the spiral groove.
In a preferred embodiment of the present invention, the groove portion includes a plurality of coaxially arranged annular grooves, and each of the first through holes is arranged to penetrate through each of the annular grooves.
The object of the invention can be further achieved by a heat exchanger, which comprises a heat exchanger shell and a plurality of heat exchange tubes, wherein a tube plate can be hermetically arranged at the first end of the heat exchanger shell, a tube plate is hermetically arranged at the second end of the heat exchanger shell, and one side of the tube plate, which is far away from the heat exchanger shell, can be hermetically connected with a hollow end shell; the heat exchange tubes are hermetically penetrated through the tube plates, two ends of each heat exchange tube are communicated with the inner cavity of the end shell, the inner cavity of the end shell and the inner cavity of each heat exchange tube form a tube pass, and the inner cavity of the heat exchanger shell forms a shell pass;
set up in the heat exchanger casing aforementioned a fluting baffle structure for reducing the tube sheet difference in temperature, the baffle body sets up one side of concave part and supports and lean on in on the tube sheet, each the heat exchange tube wears to establish through first through-hole, the inner wall of first through-hole with constitute first clearance of overflowing between the outer wall of heat exchange tube, the periphery lateral wall of baffle body with constitute the second clearance of overflowing between the inner wall of heat exchanger casing.
In a preferred embodiment of the invention, distance tubes are arranged in the heat exchanger shell and are used for abutting against the partition body so as to abut against the tube plate.
In a preferred embodiment of the present invention, the groove portion includes a plurality of linear grooves arranged in parallel at intervals, and two ends of each linear groove are open; each first through hole is arranged at each linear groove in a penetrating manner; fluid in the shell pass flows into each linear groove through the first flow passing gap and the second flow passing gap.
In a preferred embodiment of the present invention, the recessed portion includes a spiral groove, and each of the first through holes is disposed at the spiral groove in a penetrating manner; fluid in the shell side flows into the spiral groove through the first flow passing gap and the second flow passing gap.
In a preferred embodiment of the present invention, the groove portion includes a plurality of coaxially arranged annular grooves, and each of the first through holes is arranged at each of the annular grooves in a penetrating manner; fluid in the shell side flows into each annular groove through the second flow passing gap.
From the above, the slotted baffle structure and the heat exchanger for reducing the temperature difference of the tube plate have the following beneficial effects:
the slotted partition plate structure for reducing the temperature difference of the tube plate is a structural member, can change the flow path of part of shell pass media without bearing pressure, does not need to carry out strength check, can meet the structural requirement by adopting thinner thickness, is durable, has low manufacturing cost, is convenient to purchase, manufacture and maintain, has strong replaceability and good economic performance; the slotted baffle structure for reducing the temperature difference of the tube plate can be applied to a heat exchanger for reducing the temperature difference of the tube plate, can also be applied to other various fields with temperature difference deformation, and is particularly suitable for the working condition that the temperature difference of a tube shell side is more than 100 ℃, a shell side medium is saturated water and the field with harsh requirements on the conditions of the tube plate;
in the heat exchanger, the slotted baffle structure for reducing the temperature difference of the tube plate is abutted against one side of the tube plate close to the shell pass, the slotted baffle structure for reducing the temperature difference of the tube plate is provided with the groove part which is abutted against the tube plate, the medium on the shell pass side is limited to flow in the groove part, and even a dead zone is formed in the groove part, so that the thermal resistance on the shell pass side is greatly improved, the temperature of the tube plate is closer to the tube pass side, the temperature gradient is greatly reduced, the temperature difference on two sides of the tube plate is reduced, the thermal stress of the tube plate is reduced, and the structural strength of the tube plate of the heat exchanger is improved. On the premise of ensuring safety and reliability, the design structure is compact, and the economic performance is good. The slotted partition board for reducing the temperature difference of the tube plate has small occupied space, has little influence on the heat transfer area of the heat exchange tube, has no influence on other parts, ensures that the heat transfer calculation and the structural design of the heat exchanger are the same as those of a common heat exchanger, is easy to popularize in new construction and reconstruction equipment, and has wide applicability.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a schematic view of a heat exchanger of the present invention.
FIG. 2: is a cross-sectional view of the slotted baffle structure of the present invention for reducing tube sheet temperature differentials.
FIG. 3: the groove portion of the present invention is a schematic view of a straight groove.
FIG. 4: the groove portion of the present invention is a schematic view of a spiral groove.
FIG. 5: the groove portion of the present invention is a schematic view of an annular groove.
In the figure:
100. a heat exchanger;
1. a slotted baffle structure for reducing tube sheet temperature differences;
11. a separator body;
12. a first through hole;
131. a linear groove; 132. a spiral groove; 133. an annular groove;
2. a heat exchanger housing;
3. a heat exchange pipe;
4. a tube sheet;
5. a tip housing;
6. a distance tube.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 2 to 5, the present invention provides a slotted baffle structure 1 for reducing a temperature difference between tube plates, including a baffle body 11, wherein the baffle body 11 is provided with a plurality of first through holes 12, and each first through hole 12 is used for penetrating a heat exchange tube; the partition body 11 is provided with a groove portion on one side surface thereof, the groove portion being capable of allowing the fluid to flow therethrough. The separator body 11 is thin and may be made of a steel plate.
The slotted baffle plate structure for reducing the temperature difference of the tube plate is a structural member, can change the flow path of partial shell pass media without bearing pressure, does not need to carry out strength check, can meet the structural requirement by adopting thinner thickness, is durable, has low manufacturing cost, is convenient to purchase, manufacture and maintain, has strong replaceability and good economic performance.
The slotted baffle structure for reducing the temperature difference of the tube plate can be applied to a heat exchanger for reducing the temperature difference of the tube plate, can also be applied to other various fields with temperature difference deformation, and is particularly suitable for the working condition that the temperature difference of a tube shell side is more than 100 ℃, a shell side medium is saturated water and the field with harsh requirements on the conditions of the tube plate.
Further, the area of the groove portion is greater than 60% of the area of the side surface of the separator body 11 to reduce the metal heat conduction.
The groove part on the clapboard body 11 can be designed into a plurality of slotting modes according to the requirement, and the concrete modes are as follows:
as shown in fig. 3, the groove portion may be a plurality of linear grooves 131 arranged in parallel at intervals, and two ends of each linear groove 131 are open; each first through hole 12 is disposed at each linear groove 131 in a penetrating manner.
As shown in fig. 4, the groove portion may be a spiral groove 132, and each first through hole 12 is disposed through the spiral groove 132.
As shown in fig. 5, the groove portion may be a plurality of coaxially arranged annular grooves 133, and each first through hole 12 is arranged at each annular groove 133.
As shown in fig. 1, the present invention further provides a heat exchanger 100, which comprises a heat exchanger shell 2 and a plurality of heat exchange tubes 3, wherein a tube sheet 4 can be hermetically disposed at a first end of the heat exchanger shell 2, a second end of the heat exchanger shell 2 is hermetically disposed, and one side of the tube sheet 4 away from the heat exchanger shell can be hermetically connected to a hollow end shell 5; each heat exchange tube 3 is hermetically penetrated through the tube plate 4, two ends of each heat exchange tube 3 are communicated with the inner cavity of the end shell, the inner cavity of the end shell 5 and the inner cavity of each heat exchange tube 3 form a tube pass, and the inner cavity of the heat exchanger shell 2 forms a shell pass; in the present embodiment, the head shell 5, the tube sheet 4 and the heat exchanger shell 2 are flanged. The end shell 5 and the side wall of the heat exchanger shell 2 are provided with a fluid inlet and a fluid outlet.
The slotted baffle structure 1 for reducing the temperature difference of the tube plate is arranged in the heat exchanger shell 2, one side of the baffle body 11 provided with the groove part is abutted against the tube plate 4, and the flatness of the baffle body 11 is required to be consistent with that of the tube plate 4, so that the close attachment is ensured; each heat exchange tube 3 passes through the first through hole 12, a first overflowing gap is formed between the inner wall of the first through hole 12 and the outer wall of the heat exchange tube 3, and a second overflowing gap is formed between the peripheral side wall of the clapboard body 11 and the inner wall of the heat exchanger shell 2. The tolerance of the first through hole 12 of the separator body 11 is consistent with that of a baffle plate (prior art), and the occurrence of fatigue failure due to the restriction of the first through hole 12 on crevice corrosion and expansion of the heat exchange tube 3 is prevented. The separator body 11 is chamfered at the outer circumference to facilitate mounting.
The diameter of the baffle body 11 can be referenced to the baffle (prior art) size and is slightly smaller than the inner diameter of the heat exchanger shell 2. The first through holes 12 on the clapboard body 11 are distributed in accordance with the arrangement of the heat exchange tubes 3, and the heat exchange tubes penetrate through the clapboard body 11 and the tube plate 4 and are connected on the tube plate 4.
For a heat exchanger structure with a large temperature difference on the tube shell side, the temperature load can cause large thermal stress on the tube plate. There are two key factors affecting thermal stress: one is the heat exchanger structure form, namely the tube plate thickness and the structural discontinuity area; according to the design standard of the shell-and-tube heat exchanger, the thickness of the tube plate is reduced, which is beneficial to reducing the thermal stress, but the pressure bearing capacity is reduced. Especially for the tube plate of the heat exchanger which bears high temperature difference and high pressure difference at the same time, the thickness of the tube plate can not be reduced, the thermal stress in the tube plate along the thickness direction is very large, and the temperature load is likely to become a main factor which influences the strength check failure of the heat exchanger. The other is the process design of the heat exchanger, i.e. fluid temperature and flow path. However, changing the process design will possibly change the heat exchange area and the heat transfer coefficient of the heat exchanger, which is a large change or design of the whole heat exchanger, so that the heat exchanger cannot meet the working conditions and achieve the expected use effect. Therefore, how to effectively reduce the thermal stress intensity value by slightly changing the structure has very important significance, which is the key for improving the tube plate strength of the heat exchanger.
The invention has the same structure as the conventional heat exchanger in that the tube side and the shell side are separated by the tube plate, and the heat exchange tube is used as a heat transfer element. In the heat exchanger, the slotted baffle structure for reducing the temperature difference of the tube plate is abutted against one side of the tube plate close to the shell pass, the slotted baffle structure for reducing the temperature difference of the tube plate is provided with the groove part which is abutted against the tube plate, the medium on the shell pass side is limited to flow in the groove part, and even a dead zone is formed in the groove part, so that the thermal resistance on the shell pass side is greatly improved, the temperature of the tube plate is closer to the tube pass side, the temperature gradient is greatly reduced, the temperature difference on two sides of the tube plate is reduced, the thermal stress of the tube plate is reduced, and the structural strength of the tube plate of the heat exchanger is improved. On the premise of ensuring safety and reliability, the design structure is compact, and the economic performance is good. The slotted partition board for reducing the temperature difference of the tube plate has small occupied space, has little influence on the heat transfer area of the heat exchange tube, has no influence on other parts, ensures that the heat transfer calculation and the structural design of the heat exchanger are the same as those of a common heat exchanger, is easy to popularize in new construction and reconstruction equipment, and has wide applicability.
Further, as shown in fig. 1, a distance tube 6 is arranged in the heat exchanger shell 2, and the distance tube 6 is used for abutting against the clapboard body 11 so as to enable the clapboard body to abut against and cling to the tube plate 4. The slotted partition plate structure 1 for reducing the temperature difference of the tube plate can be tightly attached to one side of the tube plate close to the shell side only by the distance tube 6 without adding other fixed parts. The design ensures that the heat transfer calculation and the structural design of the heat exchanger are the same as those of a common heat exchanger, is easy to popularize in new construction and modification of equipment, and has wide applicability.
Further, as shown in fig. 3, the groove portion is a plurality of linear grooves 131 arranged in parallel at intervals, and two ends of each linear groove 131 are open; each first through hole 12 is arranged at each linear groove 131 in a penetrating manner; the fluid in the shell side flows into each linear groove 131 through the first flow passage gap and the second flow passage gap.
Further, as shown in fig. 4, the groove portion is a spiral groove 132, and each first through hole 12 is disposed at the spiral groove 132 in a penetrating manner; fluid in the shell side flows through the first and second flow gaps into the spiral groove 132.
Further, as shown in fig. 5, the groove portion includes a plurality of coaxially arranged annular grooves 133, and each first through hole 12 is arranged at each annular groove 133 in a penetrating manner; fluid in the shell side flows through the second flow gap into each annular groove 133.
The first flow passage gap and the second flow passage gap are small, so that the flow of the shell-side medium in the groove portion is limited, and even a dead zone is formed in the groove portion. Because the heat transfer coefficient of the gas-liquid medium outside the groove part is far smaller than that of steel, the existence of the slotted partition plate structure 1 for reducing the temperature difference of the tube plate greatly improves the thermal resistance between the shell pass and the tube plate, so that the temperature of the tube plate is closer to the tube pass, the temperature gradient is greatly reduced, the temperature difference of two sides of the tube plate is reduced, and the thermal stress of the tube plate is reduced.
From the above, the slotted baffle structure and the heat exchanger for reducing the temperature difference of the tube plate have the following beneficial effects:
the slotted partition plate structure for reducing the temperature difference of the tube plate is a structural member, can change the flow path of part of shell pass media without bearing pressure, does not need to carry out strength check, can meet the structural requirement by adopting thinner thickness, is durable, has low manufacturing cost, is convenient to purchase, manufacture and maintain, has strong replaceability and good economic performance; the slotted baffle structure for reducing the temperature difference of the tube plate can be applied to a heat exchanger for reducing the temperature difference of the tube plate, can also be applied to other various fields with temperature difference deformation, and is particularly suitable for the working condition that the temperature difference of a tube shell side is more than 100 ℃, a shell side medium is saturated water and the field with harsh requirements on the conditions of the tube plate;
in the heat exchanger, the slotted baffle structure for reducing the temperature difference of the tube plate is abutted against one side of the tube plate close to the shell pass, the slotted baffle structure for reducing the temperature difference of the tube plate is provided with the groove part which is abutted against the tube plate, the medium on the shell pass side is limited to flow in the groove part, and even a dead zone is formed in the groove part, so that the thermal resistance on the shell pass side is greatly improved, the temperature of the tube plate is closer to the tube pass side, the temperature gradient is greatly reduced, the temperature difference on two sides of the tube plate is reduced, the thermal stress of the tube plate is reduced, and the structural strength of the tube plate of the heat exchanger is improved. On the premise of ensuring safety and reliability, the design structure is compact, and the economic performance is good. The slotted partition board for reducing the temperature difference of the tube plate has small occupied space, has little influence on the heat transfer area of the heat exchange tube, has no influence on other parts, ensures that the heat transfer calculation and the structural design of the heat exchanger are the same as those of a common heat exchanger, is easy to popularize in new construction and reconstruction equipment, and has wide applicability.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. The slotted partition plate structure for reducing the temperature difference of the tube plate is characterized by comprising a partition plate body, wherein a plurality of first through holes are formed in the partition plate body, and each first through hole is used for penetrating through a heat exchange tube; a side surface of the separator body is provided with a groove portion capable of allowing a fluid to flow in.
2. The slotted baffle structure for reducing tube sheet temperature differentials of claim 1, wherein the area of the recessed portion is greater than 60% of the area of the side of the baffle body.
3. The slotted baffle structure for reducing tube sheet temperature differentials of claim 2, wherein said recessed portion comprises a plurality of parallel spaced linear grooves, each of said linear grooves having open ends; each first through hole is arranged at each linear groove in a penetrating manner.
4. The slotted baffle structure for reducing tube sheet temperature differentials of claim 2, wherein the recessed portion comprises a spiral groove, and each of the first through holes is disposed therethrough.
5. The slotted baffle structure for reducing tube sheet temperature differentials of claim 2, wherein the recessed portion comprises a plurality of coaxially disposed annular recesses, and wherein each of the first through-holes is disposed therethrough at each of the annular recesses.
6. A heat exchanger comprises a heat exchanger shell and a plurality of heat exchange tubes, and is characterized in that a tube plate can be arranged at the first end of the heat exchanger shell in a sealing mode, the second end of the heat exchanger shell is arranged in a sealing mode, and one side, far away from the heat exchanger shell, of the tube plate can be connected with a hollow end shell in a sealing mode; the heat exchange tubes are hermetically penetrated through the tube plates, two ends of each heat exchange tube are communicated with the inner cavity of the end shell, the inner cavity of the end shell and the inner cavity of each heat exchange tube form a tube pass, and the inner cavity of the heat exchanger shell forms a shell pass;
the heat exchanger shell is internally provided with the slotted baffle structure for reducing the temperature difference of the tube plates according to claim 1 or 2, one side of the baffle body provided with the groove portion is abutted against the tube plates, each heat exchange tube penetrates through the first through hole, a first overflowing gap is formed between the inner wall of the first through hole and the outer wall of the heat exchange tube, and a second overflowing gap is formed between the peripheral side wall of the baffle body and the inner wall of the heat exchanger shell.
7. The heat exchanger of claim 6, wherein distance tubes are provided in the heat exchanger shell for abutting the separator body against the tube sheet.
8. The heat exchanger of claim 6, wherein said recessed portion includes a plurality of parallel spaced linear recesses, each of said linear recesses having open ends; each first through hole is arranged at each linear groove in a penetrating manner; fluid in the shell pass flows into each linear groove through the first flow passing gap and the second flow passing gap.
9. The heat exchanger of claim 6, wherein the groove portion includes a spiral groove, and each of the first through holes is penetratingly disposed at the spiral groove; fluid in the shell side flows into the spiral groove through the first flow passing gap and the second flow passing gap.
10. The heat exchanger of claim 6, wherein said recessed portion includes a plurality of coaxially disposed annular recesses, and wherein each of said first through-holes is disposed through each of said annular recesses; fluid in the shell side flows into each annular groove through the second flow passing gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074348.XA CN114234675A (en) | 2022-01-21 | 2022-01-21 | Slotted partition plate structure for reducing temperature difference of tube plate and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074348.XA CN114234675A (en) | 2022-01-21 | 2022-01-21 | Slotted partition plate structure for reducing temperature difference of tube plate and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114234675A true CN114234675A (en) | 2022-03-25 |
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ID=80746927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210074348.XA Pending CN114234675A (en) | 2022-01-21 | 2022-01-21 | Slotted partition plate structure for reducing temperature difference of tube plate and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114234675A (en) |
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2022
- 2022-01-21 CN CN202210074348.XA patent/CN114234675A/en active Pending
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