CN86210510U

CN86210510U - Flat strip bound pressure vessel with double layer thin inner cylinder

Info

Publication number: CN86210510U
Application number: CN198686210510U
Authority: CN
Inventors: 朱国辉; 蒋家羚; 黄载生; 丁窘果
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 1986-12-22
Filing date: 1986-12-22
Publication date: 1988-02-10

Abstract

The pressure vessels, such as the urea synthetic tower, the petroleum hydrogenation reactor, and the nuclear reactor, mostly adopt the technical skill of build-up welding linings or inner walls made of special materials at present, of which the process is complicated, the cost is high, and the quality is difficult to be guaranteed. The utility model provides an economical and reasonable special flat strip bound pressure vessel with double inner cylinders, which directly adopts corrosion resistant thin steel plates to make the full-length double inner cylinders. The flat steel strip bound layer is provided, and two sets of monitoring and alarming protective device between the inner cylinders, and of the protective shell outside the bound layer are adopted. The utility model can break a new simple, economical, and efficient path for guaranteeing the safe utilization of the critical pressure vessels.

Description

Flat strip bound pressure vessel with double layer thin inner cylinder

The utility model belongs to the pressurized container of industrial uses such as chemical petroleum.

Often there are hydrogen and other heavy corrosion media to participate in working procedure in chemical industry and the Energy Project, thereby need to adopt such as corrosion-resistant, high temperature resistant, radiation-resistant crucial pressurized containers of a class such as urea synthesizer, hydrogenator and nuclear reactor.

At present, this type of container adopts structural types such as segmentation smithwelding, multilayer binding, double-deck cuff to make the pressure-bearing shell of container mostly both at home and abroad, and wall adopts particulate metal such as lining or strip surfacing technology built-up welding 1-2 layer Ultralow Carbon Stainless Steel layer to prevent corrosive action within it.Though the whole turret vessel of this inboard wall lining and technique for overlaying all adopts corrosion-resistant, high temperature resistant, radiation-resistant made to improve to some extent (referring to " Pressure Vessel ", the shipbuilding of Hlta chi zosen(Hitachi), 1983.6), but whole inwall all need carry out lining, especially built-up welding, not only complex process, with high costs, and the difficult assurance of quality, as long as a certain local built-up welding is bad, all may cause the heavy damage of whole turret vessel.In use, the generation that also will cause heavy corrosion is peeled off in the part of overlay cladding, adds the temper brittleness that the high pressure thick walled cylinder adopts the Cr-Mo steel to work and also may cause pernicious brittle failure accident under high temperature condition.Therefore, exploring the new way that solves the corrosion-resistant problem of crucial pressurized container is significant in the world.

The utility model is broken through conventional construction process engineering general layout, directly selects for use resistant material to make double-deck inner core, and winds outside it with the flat steel band of multilayer, and leave groove between double-deck inner core, makes and the cylindrical shell exterior, to reach the purpose of leakage alarm.This new structural manufacturing process technology not only makes the container manufacturing greatly be simplified, the welding job amount significantly reduces, cost significantly reduces, and can prevent from effectively to corrode and pernicious consequence of failure that temper brittleness causes, makes the Safety performance of the crucial pressurized container of this class be able to basic change.

Accompanying drawing 1 is this double-deck inner core Flat Steel Ribbon Wound Pressure Vessel configuration diagram.

With reference to accompanying drawing 1 explanation embodiment.

1 is the thin inner core of first layer among the figure, adopts the weldering of corrosion resisting steel coiled sheet to form, and the semi-circular recesses that processing is communicated with each other outside it, and its radius generally is taken as 3 millimeters.2 wrap up in the tile mode for the thin inner core of the second layer and to be welded on first layer inner core outside among the figure, and it vertically all should adopt the shape of the mouth as one speaks formula of taking with circumferential welded seam, and is unimpeded to guarantee the groove outside the thin inner core of first layer.3 are the outer non-corrosion-resistant wrapping layer of thin inner core among the figure, adopt the direct wrapping of suitable steel plate to be welded on the thin inner core of second layer outside to strengthen the axial carrying capacity of container, and whether this layer needs, and thickness is much to be decided on designing requirement.4 is flat steel band winding layer among the figure, looks designing requirement and adopts suitable steel band, is entwined necessarily to give stress by certain inclination angle is successively staggered.5 is the top flange of container among the figure, and available forging or multi-layer structure are made, but its inner lining that needs is with double-deck resistant material.6 is the spherical bottom of container among the figure, should adopt multi-layer structure, and wherein the 1st, 2 thin layers are also made by resistant material, and the same groove of communicating with each other that has with inner core, and the groove of entire container inner core is promptly drawn by the groove place of bottom.7 is the outer layer protection shell of container among the figure, be welded by the wrapping of common sheet metal, and attaching is a kind of special safety monitoring and protecting system usedly (sees the patent application that the applicant proposes to Patent Office of the People's Republic of China on the same day: novel pressure vessel safety monitoring and protecting device).Like this, just have inner core and two cover monitorings and alarm protecting apparatus, the safe handling of container is monitored fully around layer for this specific use pressurized container.Thereby the use of this container will be very reliable, and contrast adopts the tube structure of inner wall overlaying technology and smithwelding, hot jacket or wrapping, will have significant technical economic benefit.

Claims

1, a kind of bilayer approaches the inner core Flat Steel Ribbon Wound Pressure Vessel by inner core (1), (2), outward around steel belt layer (4), and outer containment vessel (7), top flange (5) and spherical bottom (6) are formed.It is characterized in that said container inner core is to be combined by inner core (1) and inner core (2) double layer construction total length.

2, according to the described this pressurized container of claim 1, it is characterized in that having the groove of communicating with each other on the total length outer wall of first layer inner core, groove is semicircle, generally getting radius is 3 millimeters.

3, according to the described pressurized container of claim 1, it is characterized in that said bottom (6) and flange (5) all adopt double layer construction, its first layer adopt with extraordinary steel sheet protected against corrosion impact briquetting of inner core homotype or volume weldering form ， And along circumferentially divide equally have with the first layer inner core outside the fairlead that communicates of groove.