CN201218671Y

CN201218671Y - High-reliability double-cooling pipe double-pipe plate pipe casing type heat exchanger

Info

Publication number: CN201218671Y
Application number: CNU2008200677676U
Authority: CN
Inventors: 张平
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-14
Filing date: 2008-06-14
Publication date: 2009-04-08
Anticipated expiration: 2018-06-14

Abstract

The utility model relates to a double cooling pipe and double tube sheet shell and tube type heat exchanger with high reliability, comprising a case, wherein an inner tube sheet and an outer tube sheet and a left end cover and a right end cover are arranged on two ends of the case, an overfall baffle plate and a plurality of cooling pipes are arranged in the case, characterized in that, the cooling pipes are double layer cooling pipes combining an inner pipe and an outer pipe, and a plurality of grooves perforative axially are arranged on an inner wall of the outer cooling pupe or an outer wall of the inner cooling pipe. The structure of the utility mode is in favor of finding leakage failure in time, and ensures two media are not mixed, for protecting the devices. The utility model is mainly used in the industries of petrochemical industry, shipping, metallurgy, naval ships, electric power and the like.

Description

Two cooling tube double tubesheet shell-and-tube heat exchangers of high reliability

(1) technical field:

The utility model relates to plant equipment manufacturing technology field, is the two cooling tube double tubesheet shell-and-tube heat exchangers that are applied to a kind of high reliability in the industries such as petrochemical industry, boats and ships, metallurgy, naval vessels, electric power.

(2) background technology:

The cooling element overwhelming majority who makes all kinds of shell-and-tube heat exchangers now is single cooling tube single tube plate structure, and also some is single cooling tube double tubesheet structure to petroleum chemical industry.The cooling medium of this shell-and-tube heat exchanger only depends on the tube wall of single cooling tube to separate with the medium that is cooled, break as cooling tube, two media will mix, and this blending agent enters the damage that will cause equipment behind the miscellaneous equipment, and serious will cause equipment burnout.The medium that has in addition belongs to high pressure, poisonous fluid, in case seepage will pollute even injure personal safety to environment.

(3) summary of the invention:

The purpose of this utility model is exactly will solve to cause inside and outside two media to mix the problem that causes device damage easily after existing shell-and-tube heat exchanger list cooling tube breaks, provide a kind of simple in structure, two cooling tube double tubesheet shell-and-tube heat exchangers of the high reliability that is easy to find after cooling tube breaks.

Concrete scheme of the present utility model is: improve at existing shell-and-tube heat exchanger, it includes housing, inside and outside tube sheet and left and right sides end cap respectively are equipped with in the two ends of housing, be provided with flow-disturbing dividing plate and Duo Gen cooling tube in the housing, it is characterized in that: described cooling tube is the compound double-deck cooling tube of inner and outer pipes, and has some the grooves that axially run through on the outer wall of the inwall of cooling tube or interior cooling tube outside.

The utility model is simple in structure, dependable performance, double-deck cooling tube, can not break simultaneously by ectonexine, can guarantee that inside and outside two media can not mix, in case and internal layer or outer cooling tube break, medium will pass through the gap between the inside and outside cooling tube, flow to the axial notch of outer tube or interior Guan Suokai, flow to the two ends of double-deck cooling tube again by groove.Can add warning device at two ends, in time report to the police, play the effect of absolute protection equipment.

(4) description of drawings:

Fig. 1 is a general structure schematic diagram of the present utility model;

Fig. 2 is the A-A zoomed-in view figure of Fig. 1.

Among the figure: 1-left end cap, 2-outer tube plate, 3-internal tube plate, 4-housing, 5-flow-disturbing dividing plate, the double-deck cooling tube of 6-, 7-right end cap, the outer cooling tube of 8-, cooling tube in the 9-, 10-groove.

(5) specific embodiment:

Referring to Fig. 1, the utlity model has the basic structure of common tube shell heat exchanger, include a housing 4, inside and

outside tube sheet

3 and 2 and left and right sides end cap 1 and 7 respectively are equipped with in the two ends of housing 4.Be provided with flow-disturbing dividing plate 5 and double-deck cooling tube 6 in the housing 4, particularly: the double-deck cooling tube 6 in the utility model is to be composited (referring to Fig. 2) by interior cooling tube 3 and outer cooling tube 2, and has six scalloped recess that axially run through 10 on the outer wall of cooling tube 2 outside.The bar number of groove is good with the 3-6 bar, and certainly one or more also is feasible, and the shape of groove can also be semicircle, triangle, various geometries such as trapezoidal.

Claims

1. two cooling tube double tubesheet shell-and-tube heat exchangers of high reliability, has housing, inside and outside tube sheet and left and right sides end cap respectively are equipped with in the two ends of housing, be provided with flow-disturbing dividing plate and Duo Gen cooling tube in the housing, it is characterized in that: described cooling tube is the compound double-deck cooling tube of inner and outer pipes, and has some the grooves that axially run through on the outer wall of the inwall of cooling tube or interior cooling tube outside.