CN202599195U - Upper tube-sheet protection device for heat exchanger - Google Patents

Upper tube-sheet protection device for heat exchanger Download PDF

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Publication number
CN202599195U
CN202599195U CN 201220223451 CN201220223451U CN202599195U CN 202599195 U CN202599195 U CN 202599195U CN 201220223451 CN201220223451 CN 201220223451 CN 201220223451 U CN201220223451 U CN 201220223451U CN 202599195 U CN202599195 U CN 202599195U
Authority
CN
China
Prior art keywords
heat exchanger
sheet
upper tube
tube
perforated plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220223451
Other languages
Chinese (zh)
Inventor
李明兴
张序洪
王岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZIBO WANFENG GOAL CHEMICAL EQUIPMENT MANUFACTURING Co Ltd
Original Assignee
ZIBO WANFENG GOAL CHEMICAL EQUIPMENT MANUFACTURING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZIBO WANFENG GOAL CHEMICAL EQUIPMENT MANUFACTURING Co Ltd filed Critical ZIBO WANFENG GOAL CHEMICAL EQUIPMENT MANUFACTURING Co Ltd
Priority to CN 201220223451 priority Critical patent/CN202599195U/en
Application granted granted Critical
Publication of CN202599195U publication Critical patent/CN202599195U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an upper tube-sheet protection device for a heat exchanger, belonging to the field of mechanical devices. The upper tube-sheet protection device for the heat exchanger comprises an upper tube sheet of the fixed tube-sheet heat exchanger; a cooling air pipe is arranged at the bottom of the fixed tube-sheet heat exchanger; and cavities are formed among a tube pass, a shell and the upper tube sheet are communicated with the cooling air pipe. According to the upper tube-sheet protection device, the work temperature of the upper tube sheet is reduced due to the arrangement of the cooling air pipe, the corrosion of the upper tube sheet caused by high temperature is prevented, the operation effect is good, the replacement cost is reduced, the work efficiency is improved, and the overall operation of the heat exchanger is ensured.

Description

Heat exchanger upper perforated plate protective device
Technical field
The utility model relates to a kind of heat exchanger upper perforated plate protective device, belongs to the mechanical device field.
Background technology
Fixed tube-sheet exchanger mainly contains parts such as shell, upper perforated plate, tube bank, end socket and constitutes.In circular housing, the bundle of parallel tubes of packing into, the tube bank two ends are fixed on the tube sheet with the welding or the method for expanded joint, and two tube sheets and outer tube directly weld, and the top cover that the import or export pipe is housed links to each other with shell two end flanges with bolt.Its feature is simple in structure, does not have shell-side to be tightly connected, and identical housing internal diameter comb is maximum; Tube side can be divided into any number of tube passes, because of two tube sheets are supported mutually by pipe, so its tube sheet is the thinnest in various shell-and-tube heat exchangers; Cost is minimum, thereby is used widely, but the shortcoming of this heat exchanger is; Usually Yin Gaowen causes the upper perforated plate seriously corroded, has increased production cost.
The utility model content
According to above deficiency of the prior art, the utility model technical problem to be solved is: a kind of normal operation of effective protection upper perforated plate is provided, reduces the heat exchanger upper perforated plate protective device of replacement cost.
The utility model solves the technical scheme that its technical problem adopted:
Described heat exchanger upper perforated plate protective device comprises the fixed tube-sheet exchanger upper perforated plate, and it is provided with cooling duct in the fixed tube-sheet exchanger bottom, and the cavity that forms between tube side, housing and the upper perforated plate is connected with cooling duct.
Described outside is provided with expansion joint.When thermal stress surpasses the allowable stress of material, need establish expansion joint in outside.The compensation arrangement that expansion joint expands with heat and contract with cold as pipeline can bear the vibration that pipeline heat expansion stress and pulse cause in system.
The internal diameter of described cooling duct is 1/5 ~ 1/3 of a fixed tube-sheet exchanger internal diameter.The internal diameter of cooling duct is crossed the heat exchange efficiency of affects heat exchanger, and internal diameter is too small, and is not obvious to the cooling effect of upper perforated plate.
When heat exchanger was worked, air fed heat exchanger inside from cooling duct, had reduced the operating temperature of upper perforated plate, had guaranteed the overall operation of heat exchanger.
The beneficial effect that the utility model had is:
The utility model has reduced the operating temperature of upper perforated plate through cooling duct is set, the upper perforated plate corrosion of having avoided Yin Gaowen to cause, and its operational effect is good, has reduced replacement cost, has improved operating efficiency, has guaranteed the overall operation of heat exchanger.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1, upper perforated plate; 2, tube side; 3, housing; 4, expansion joint; 5, cooling duct; 6, fixed tube-sheet exchanger; 7, cavity.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to further describe:
As shown in Figure 1, described heat exchanger upper perforated plate protective device comprises fixed tube-sheet exchanger upper perforated plate 1, and it is provided with cooling duct 5 in fixed tube-sheet exchanger 6 bottoms, and the cavity 7 that forms between tube side 2, housing 3 and the upper perforated plate 1 is connected with cooling duct 5.
Described housing 3 outer setting expansion joints 4 when thermal stress surpasses the allowable stress of material, need be established expansion joint 4 in housing 3 outsides, and the compensation arrangement that expansion joint 4 expands with heat and contract with cold as pipeline can bear the vibration that pipeline heat expansion stress and pulse cause in system.
The internal diameter of described cooling duct 5 is 1/5 of fixed tube-sheet exchanger 6 internal diameters.The internal diameter of cooling duct 5 is crossed the heat exchange efficiency of affects heat exchanger, and internal diameter is too small, and is not obvious to the cooling effect of upper perforated plate 1.
When heat exchanger was worked, air fed heat exchanger 6 inside from cooling duct 5, has reduced the operating temperature of upper perforated plate 1, has guaranteed the overall operation of heat exchanger 6.The utility model has reduced the operating temperature of upper perforated plate 1 through cooling duct 5 is set, upper perforated plate 1 corrosion of having avoided Yin Gaowen to cause, and its operational effect is good, has reduced replacement cost, has improved operating efficiency, has guaranteed the overall operation of heat exchanger 6.

Claims (3)

1. a heat exchanger upper perforated plate protective device comprises the fixed tube-sheet exchanger upper perforated plate, it is characterized in that: in the fixed tube-sheet exchanger bottom cooling duct is set, the cavity that forms between tube side, housing and the upper perforated plate is connected with cooling duct.
2. heat exchanger upper perforated plate protective device according to claim 1, it is characterized in that: described outside is provided with expansion joint.
3. heat exchanger upper perforated plate protective device according to claim 1 is characterized in that: the internal diameter of described cooling duct is 1/5 ~ 1/3 of a fixed tube-sheet exchanger internal diameter.
CN 201220223451 2012-05-17 2012-05-17 Upper tube-sheet protection device for heat exchanger Expired - Fee Related CN202599195U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220223451 CN202599195U (en) 2012-05-17 2012-05-17 Upper tube-sheet protection device for heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220223451 CN202599195U (en) 2012-05-17 2012-05-17 Upper tube-sheet protection device for heat exchanger

Publications (1)

Publication Number Publication Date
CN202599195U true CN202599195U (en) 2012-12-12

Family

ID=47316726

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220223451 Expired - Fee Related CN202599195U (en) 2012-05-17 2012-05-17 Upper tube-sheet protection device for heat exchanger

Country Status (1)

Country Link
CN (1) CN202599195U (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121212

Termination date: 20140517