CN212931092U - Heat exchanger capable of preventing shell-side solid-phase thermal resistance - Google Patents
Heat exchanger capable of preventing shell-side solid-phase thermal resistance Download PDFInfo
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- CN212931092U CN212931092U CN202021036711.1U CN202021036711U CN212931092U CN 212931092 U CN212931092 U CN 212931092U CN 202021036711 U CN202021036711 U CN 202021036711U CN 212931092 U CN212931092 U CN 212931092U
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- tube plate
- lower tube
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- shell
- heat exchanger
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Abstract
The utility model discloses a heat exchanger capable of preventing shell pass solid phase thermal resistance, which comprises an upper tube box, an upper tube plate, a shell, a plurality of heat exchange tubes, a baffle plate, a lower tube plate and a lower tube box, wherein the upper tube plate and the lower tube plate are respectively fixed at two end parts of the shell; the upper tube box is fixed on the upper tube plate, and the lower tube box is fixed on the lower tube plate; the two end parts of the plurality of heat exchange tubes are respectively fixed on the upper tube plate and the lower tube plate; the top surface of the lower tube plate is in a circular arc arch shape, or in a conical shape, or in an inclined plane shape; the lower tube plate is internally provided with a discharge hole, one end of the discharge hole is communicated with the lower position of the top surface of the lower tube plate, and the other end of the discharge hole is communicated to the outer side of the lower tube plate and is connected with a discharge pipe. When the discharging pipe is opened when needed, the solid medium deposited on the top surface of the lower tube plate is discharged from the discharging pipe by means of self gravity, so that excessive solid impurities are prevented from covering the top surface of the lower tube plate, local overheating damage to the top surface of the lower tube plate is avoided, and the service life of the heat exchanger can be prolonged.
Description
Technical Field
The utility model relates to a heat exchanger technical field, concretely relates to heat exchanger of protection shell side solid phase thermal resistance.
Background
The heat exchanger is indispensable equipment for realizing heat exchange and transfer in the chemical production process, and the shell-and-tube heat exchanger is the most widely used heat exchange equipment in industry. The vertical tube-pass heat exchanger is widely applied in industrial production, the investment of the vertical tube-pass heat exchanger generally accounts for 30% -40% of the investment of all equipment, and materials occupy a certain proportion in the vertical tube-pass shell-and-tube heat exchanger with a tube-pass condensation.
The heat exchanger comprises an upper tube box, an upper tube plate, a shell, a plurality of heat exchange tubes, a lower tube plate and a lower tube box, wherein the upper tube plate and the lower tube plate are respectively fixed at two ends of the shell so as to enclose a shell pass space; the upper tube box is fixed on the upper tube plate and the lower tube box are enclosed into an upper tube pass space, and the lower tube box is fixed on the lower tube plate and the lower tube pass space; the two end parts of the plurality of heat exchange tubes are respectively fixed on the upper tube plate and the lower tube plate and are respectively communicated with the upper tube pass space and the lower tube pass space. High temperature fluid flows to the top tube box through the heat transfer pipe from lower tube case during the use, and shell side space the inside is full of coolant, and coolant constantly advances from the entry and goes out with the export, and cold water medium contains gaseous inclusion and solid inclusion, can lead to gaseous inclusion and solid inclusion to constantly accumulate in shell side space, piles up the bottom surface at last tube sheet and the top surface of lower tube sheet respectively. Wherein the solid is mingled with and can subside the top surface at tube sheet down, and along with the slow accumulation that the solid was mingled with, the bottom surface of tube sheet will be mingled with the cover by the solid down, so tube sheet top surface and coolant's heat transfer down by the separation, the radiating effect can receive the influence, especially the heat exchange tube with the linking part of tube sheet down, the heat dissipation then leads to local overheat well, the position overheated corrodes the damage easily in the past for a long time, has the potential safety hazard, shortens the life of heat exchanger.
Disclosure of Invention
There is above-mentioned technical problem to prior art, the utility model provides a prevent heat exchanger of shell side solid phase thermal resistance can avoid low tube sheet top surface local overheat, extension heat exchanger life.
In order to achieve the above object, the utility model provides a following technical scheme:
the heat exchanger comprises an upper tube box, an upper tube plate, a shell, a plurality of heat exchange tubes, a baffle plate, a lower tube plate and a lower tube box, wherein the upper tube plate and the lower tube plate are respectively fixed at two ends of the shell so as to enclose a shell side space; the upper tube box is fixed on the upper tube plate and the lower tube box are enclosed into an upper tube pass space, and the lower tube box is fixed on the lower tube plate and the lower tube pass space; the two end parts of the plurality of heat exchange tubes are respectively fixed on the upper tube plate and the lower tube plate and are respectively communicated with the upper tube side space and the lower tube side space, and the baffle plate is fixed on a section of the heat exchange tube, which is positioned in the shell side space; the top surface of the lower tube plate is in a circular arc arch shape, or in a conical shape, or in an inclined plane shape; the lower tube plate is internally provided with a discharge hole, one end of the discharge hole is communicated with the lower position of the top surface of the lower tube plate, and the other end of the discharge hole is communicated to the outer side of the lower tube plate and is connected with a discharge pipe.
Preferably, the discharge hole has an L shape.
Preferably, the discharge pipe and the side part of the lower tube plate are welded and fixed with each other.
Preferably, the lower tube plate is of an integrally cast structure.
The utility model has the advantages that:
the top surface of the lower tube plate of the heat exchanger for preventing shell-side solid-phase thermal resistance is in a circular arc arch convex shape, or in a conical convex shape, or in an inclined plane shape; the lower tube plate is internally provided with a discharge hole, one end of the discharge hole is communicated with the lower position of the top surface of the lower tube plate, and the other end of the discharge hole is communicated to the outer side of the lower tube plate and is connected with a discharge pipe. Therefore, when the discharge pipe is opened when needed, the solid medium deposited on the top surface of the lower tube plate is discharged from the discharge pipe by means of self gravity, the situation that excessive solid impurities cover the top surface of the lower tube plate is avoided, and further the local overheating damage of the top surface of the lower tube plate is avoided, and therefore the service life of the heat exchanger can be prolonged.
Drawings
Fig. 1 is a schematic structural view of a heat exchanger in the embodiment.
Fig. 2 is a schematic structural view of an inclined plane tube plate in the embodiment.
Fig. 3 is a schematic structural view of an arched tube plate in the embodiment.
Fig. 4 is a schematic structural view of a conical tube sheet in the embodiment.
Reference numerals:
an upper tube plate 1, a discharge hole 2 and a liquid discharge pipe 5;
the heat exchange tube 6, the baffle plate 7, the lower tube plate 8, the shell 9, the upper tube box 10 and the lower tube box 11
Detailed Description
The present invention will be described in detail with reference to the following embodiments and accompanying drawings.
As shown in fig. 1, the heat exchanger of the present embodiment includes an upper tube box 10, an upper tube plate 1, a shell 9, a plurality of heat exchange tubes 6, a baffle plate 7, a lower tube plate 8, and a lower tube box 11, where the upper tube plate 1 and the lower tube plate 8 are respectively fixed at two ends of the shell 9, so as to enclose a shell side space; the upper tube box 10 is fixed on the upper tube plate 1 and encloses an upper tube pass space together with the upper tube plate 1, and the lower tube box 11 is fixed on the lower tube plate 8 and encloses a lower tube pass space together with the lower tube plate; the two end parts of the plurality of heat exchange tubes 6 are respectively fixed on the upper tube plate 1 and the lower tube plate 8 and are respectively communicated with the upper tube pass space and the lower tube pass space. The baffle 7 is fixed to a section of the heat exchange tube 6 located in the shell-side space. The main improvement of the utility model lies in that the top surface of the lower tube plate 8 is inclined plane as shown in fig. 1 and fig. 2, or the top surface of the lower tube plate 8 is arc arch-shaped convex as shown in fig. 3, or the top surface of the lower tube plate 8 is conical convex as shown in fig. 4. The lower tube plate 8 is internally provided with a discharge hole 2, one end of the discharge hole 2 is communicated with the lower position of the top surface of the lower tube plate 8, the other end of the discharge hole 2 is communicated with the outer side of the lower tube plate 8 and is connected with a discharge pipe 5, and the discharge pipe 5 is in a normally closed state. After the heat exchanger stops working or in the course of the work, when needing to clear up the solid that 8 tops of tube sheet down and mix with, discharge pipe 5 is opened in external operation, then the solid that 8 top surfaces of tube sheet are mixed with and rely on self gravity to discharge from the discharge pipe in the deposit under, or drive the solid with the help of the remaining coolant of shell side and mix with and flow out from the discharge pipe, avoid too much solid to mix with the top surface that covers tube sheet 8 down, and then avoid 8 top surfaces of tube sheet local overheat damage down, consequently can prolong the life of heat exchanger. It should be noted that, during the operation of the heat exchanger, the cooling medium is continuously discharged from the inlet and the outlet, and the increased discharge hole 2 can be regarded as increasing one cooling medium outlet, which does not affect the normal operation of the heat exchanger.
In the present embodiment, the discharge hole 2 has an L shape. The discharge pipe 5 and the side part of the lower tube plate 8 are welded and fixed with each other. The lower tube plate 8 is of an integrally cast structure.
When the top surface of lower tube sheet 8 is circular arc arch shape arch bulge or conical bulge structure, because solid inclusion flows down the bottom circumference side of lower tube sheet 8, the quantity of discharge hole 2 can be a plurality ofly, and a plurality of discharge holes 2 distribute around the circumference of lower tube sheet 8 to can discharge solid inclusion more thoroughly in a diversely, the quantity is decided according to actual need. Or the periphery of the top surface of the lower tube plate 8 is an inclined circle in order to guide the solid inclusions flowing to the periphery intensively to the discharge holes 2.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. A heat exchanger capable of preventing shell pass solid-phase thermal resistance comprises an upper tube box, an upper tube plate, a shell, a plurality of heat exchange tubes, a baffle plate, a lower tube plate and a lower tube box, wherein the upper tube plate and the lower tube plate are respectively fixed at two end parts of the shell so as to enclose a shell pass space; the upper tube box is fixed on the upper tube plate and the lower tube box are enclosed into an upper tube pass space, and the lower tube box is fixed on the lower tube plate and the lower tube pass space; the two end parts of the plurality of heat exchange tubes are respectively fixed on the upper tube plate and the lower tube plate and are respectively communicated with the upper tube side space and the lower tube side space, and the baffle plate is fixed on a section of the heat exchange tube, which is positioned in the shell side space; the method is characterized in that: the top surface of the lower tube plate is in a circular arc arch shape, or in a conical shape, or in an inclined plane shape; the lower tube plate is internally provided with a discharge hole, one end of the discharge hole is communicated with the lower position of the top surface of the lower tube plate, and the other end of the discharge hole is communicated to the outer side of the lower tube plate and is connected with a discharge pipe.
2. The shell-side solid-phase thermal resistance-preventing heat exchanger as claimed in claim 1, which is characterized in that: the discharge hole has an L shape.
3. The shell-side solid-phase thermal resistance-preventing heat exchanger as claimed in claim 1, which is characterized in that: and the discharge pipe and the side part of the lower tube plate are mutually welded and fixed.
4. The shell-side solid-phase thermal resistance-preventing heat exchanger as claimed in claim 1, which is characterized in that: the lower tube plate is of an integrally cast structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021036711.1U CN212931092U (en) | 2020-06-08 | 2020-06-08 | Heat exchanger capable of preventing shell-side solid-phase thermal resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021036711.1U CN212931092U (en) | 2020-06-08 | 2020-06-08 | Heat exchanger capable of preventing shell-side solid-phase thermal resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212931092U true CN212931092U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021036711.1U Active CN212931092U (en) | 2020-06-08 | 2020-06-08 | Heat exchanger capable of preventing shell-side solid-phase thermal resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212931092U (en) |
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2020
- 2020-06-08 CN CN202021036711.1U patent/CN212931092U/en active Active
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