CN2395241Y

CN2395241Y - Floating heat exchanger

Info

Publication number: CN2395241Y
Application number: CN 99254507
Authority: CN
Inventors: 张文泼
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-18
Filing date: 1999-11-18
Publication date: 2000-09-06
Anticipated expiration: 2009-11-18

Abstract

The utility model relates to a floating head type heat exchanger, which is composed of a casing, wherein, a pipe bundle is arranged in the casing; both ends of the pipe bundle are respectively fixed with a fixed pipe plate and a floating head pipe plate; a floating pipe plate is sheathed with a hook ring which is connected with a floating head cover; one end of the casing is connected with a pipe case, and the other end is connected with an outer head cover. The utility model is characterized in that the floating head pipe plate is provided with a circumference groove, and the hook ring is provided with an annular convex. When the heat exchanger carries out maintenance and leakage check, only the floating head cover and the outer head cover are taken off so that the annular convex of the hook ring presses against the floating head pipe plate or the sealing ring in the circumference groove of the casing. The utility model has the advantages of simple structure, time saving, labor saving, etc. The utility model can check the leakage position of the pipe bundle without an accessory apparatus.

Description

Movable tube sheets heat exchanger

A kind of movable tube sheets heat exchanger is mainly used in the heat transmission equipment of oil refining, petrochemical industry industry.It is applicable to various aspects such as cooling, condensation, heating, evaporation and Waste Heat Recovery.

Movable tube sheets heat exchanger mainly is made up of housing and the tube bank that is provided with in housing.Stream has fluid respectively in the tube side of the shell side of housing and tube bank, so that make heat pass to the lower fluid of temperature from the higher fluid of temperature, to satisfy the needs on the production technology.Because tube bank places in the housing, and the fluid in fluid in the shell side of housing and the tube bank all corrodes the inside and outside wall of tube bank, and tube bank often is leaked, and causes the mutual pollution of two kinds of fluids in shell side and the tube side and influences the quality of production., need make regular check on for this reason, take place to leak concrete take place to leak and find to prevent to restrain.Existing movable tube sheets heat exchanger is carried out leak test need set up special-purpose proving ring assembly, with outer skull, the floating head of heat exchanger with angle circle to take off, the proving ring assembly is connected with housing, being pressed into water from the inlet of housing carries out pressure testing and searches the position of leaking tube bank, after the inspection, take off the proving ring assembly, angle circle, floating head and the outer skull with heat exchanger installs again.The weak point that existing movable tube sheets heat exchanger exists is, must set up special-purpose proving ring assembly, could carry out leak test by the heat exchanging device; Because heat exchanger does not now have unified standard.Therefore, proving ring interchangeability is poor; The proving ring assembly quality is big, adorns, tears open inconvenience and effort, and the maintenance leakage detection time is long; Be not easy to deposit and take care of.

The purpose of this utility model is to provide a kind of proving ring assembly function that has, and does not need accessory device just can check the tube bank leak position, and is simple in structure, the movable tube sheets heat exchanger that the maintenance leakage detection time is short.

Movable tube sheets heat exchanger of the present utility model, it comprises housing (3), the tube bank of being made up of some pipes (13) is set in housing (3), one end of tube bank is fixed on the fixed tube sheet (14), the other end of tube bank is fixed on the floating tubesheet (12), the both ends of the surface of fixed tube sheet (14) contact with an end end face of housing (3) and bobbin carriage (1) respectively, bobbin carriage (1) is connected with housing (3), bobbin carriage (1) is built-in with tube side dividing plate (21), the other end of bobbin carriage (1) is connected with flat cover (15), be nested with the hook circle of forming by two semicircular ring (6) on the floating tubesheet (12), hook circle (6) is connected with floating head (7), outer skull (8) is connected with the other end of housing (3), it is characterized in that: be provided with circumferential groove (22) on floating tubesheet (12), be provided with annular protrusion (23) on hook circle (6).

Or be provided with the circumferential groove (24) that to place sealing cord (16) at the other end of housing (3).

Movable tube sheets heat exchanger of the present utility model is compared with existing movable tube sheets heat exchanger, owing on the floating tubesheet of movable tube sheets heat exchanger of the present utility model, be provided with circumferential groove, on the hook circle, be provided with annular protrusion, or be provided with the structure of circumferential groove at the end face of housing, when heat exchanger maintenance leakage detection, outer skull and floating head are taken off, at the front end of the circumferential groove of floating tubesheet or the built-in sealing cord of circumferential groove of housing, the annular protrusion of hook circle is pushed down sealing cord, the hook circle is connected with housing, is pressed into water from the inlet of housing and gets final product.Have advantages such as simple in structure, easy to use, maintenance leakage detection time weak point.Do not need to set up special-purpose proving ring assembly, avoided dress, torn open and deposit and take care of the trouble that the proving ring assembly brings.

The utility model is described in further detail to utilize embodiment shown in the drawings below.

Fig. 1 is a movable tube sheets heat exchanger structure cross-sectional schematic of the present utility model.

Fig. 2 angles the structural representation of circle (6) for semicircular ring.

Fig. 3 is an A-A cross-sectional schematic among Fig. 2.

Fig. 4 angles the structural representation of circle (6) for other semicircular ring.

Fig. 5 is a B-B cross-sectional schematic among Fig. 4.

Fig. 6 is the structure cross-sectional schematic of floating tubesheet (12).

Fig. 7 is maintenance leakage detection view.

Fig. 8 is another maintenance leakage detection view.

With reference to Fig. 1, movable tube sheets heat exchanger has housing (3), and shell side inlet (19) and liquid outlet (20) are set on housing (3).The tube bank of being made up of some pipes (13) is set in housing (3).In tube bank, be nested with several deflection plates (5).Below at the shell side inlet (19) that is positioned at housing (3) is provided with the impingement baffle (4) that is fixed on the pipe (13).One end of tube bank is fixed on the fixed tube sheet (14), and the other end of tube bank is fixed on the floating tubesheet (12).The two ends of fixed tube sheet (14) are nested with seal ring piece (2) and contact with an end end face of housing (3) and bobbin carriage (1) respectively, and bobbin carriage (1) is connected and fixed with screw bolt and nut with housing (3).Tube side inlet (17) and liquid outlet (18) are set on the bobbin carriage (1), are built-in with tube side dividing plate (21) at bobbin carriage (1).To be nested with seal ring piece (2) on the flat cover (15), the other end of bobbin carriage (1) and flat cover (15) are connected and fixed with screw bolt and nut.Be nested with hook circle (6) on the floating tubesheet (12), hook circle (6) and floating tubesheet (12) clamping, be nested with seal ring piece (9) on the floating tubesheet (12), seal ring piece (9) contacts with floating head (7), and hook circle (6) is connected and fixed with screw bolt and nut with floating head (7).The other end end face of housing (3) and outside be equipped with seal ring piece (11) between skull (8) end face, with screw bolt and nut outer skull (8) is fixed on the housing (3).Seal ring piece (2), (9) and (11) are graphite and make.

With reference to Fig. 2-5, hook circle (6) is made up of by the inclined-plane overlap joint two semicircular ring, is provided with annular protrusion (23) on hook circle (6).

With reference to Fig. 6, floating tubesheet (12) is provided with circumferential groove (22).

With reference to Fig. 7, end face at housing (3) is provided with circumferential groove (24), places sealing cord (16) in circumferential groove (24), and sealing cord (16) is the graphite rope, the annular protrusion (23) of hook circle (6) is compressed sealing cord (16), hook circle (6) and housing (3) are connected and fixed with bolt.

With reference to Fig. 8, place sealing cord (16) at the front end of the circumferential groove (22) of floating tubesheet (12), the annular protrusion (23) of hook circle (6) is compressed sealing cord (16), with bolt hook circle (6) and housing (3) are connected and fixed.

With reference to Fig. 1,7 and 8, movable tube sheets heat exchanger is when overhauling leakage detection, outer skull (8), the floating head (7) of heat exchanger are taken off, in the circumferential groove (24) of housing (3), place sealing cord (16), or place sealing cord (16) at the front end of the circumferential groove (22) of floating tubesheet (12) and hook circle (6) and housing (3) be connected and fixed with bolt, be pressed into water from the inlet (19) of housing (3), in the pipe of tube bank (13) if there are flowing out, just found this pipe and corroded and leak, so that change.

Claims

1, a kind of movable tube sheets heat exchanger, it comprises housing (3), the tube bank of being made up of some pipes (13) is set in housing (3), one end of tube bank is fixed on the fixed tube sheet (14), the other end of tube bank is fixed on the floating tubesheet (12), the both ends of the surface of fixed tube sheet (14) contact with an end end face of housing (3) and bobbin carriage (1) respectively, bobbin carriage (1) is connected with housing (3), bobbin carriage (1) is built-in with tube side dividing plate (21), the other end of bobbin carriage (1) is connected with flat cover (15), be nested with the hook circle of forming by two semicircular ring (6) on the floating tubesheet (12), hook circle (6) is connected with floating head (7), outer skull (8) is connected with the other end of housing (3), it is characterized in that: be provided with circumferential groove (22) on floating tubesheet (12), be provided with annular protrusion (23) on hook circle (6).

2, movable tube sheets heat exchanger according to claim 1 is characterized in that: or be provided with the circumferential groove (24) that can place sealing cord (16) at the other end of housing (3).