Be applicable to the high-pressure horizontal heat exchanger of cleaning medium evaporation
Technical field
The present invention relates to a kind of horizontal heat exchanger, especially relate to a kind of high-pressure horizontal heat exchanger that is applicable to cleaning medium evaporation.
Background technology
For realizing the efficient utilization of the energy, industrial production is often by mode recovery waste heat, the used heat of heat exchange, and for adding thermal material, even can utilize waste heat, used heat to make material phase transformation evaporation in a lot of occasions, under this operating mode, require heat exchanger top to there is larger evaporating space.
The existing horizontal heat exchanger with evaporating space mostly adopts single cylindrical structure, and larger, the flexible deficiency of its rigidity will produce larger thermal stress in the time that phase temp .-differential is large; This class heat exchanger often adopts the removable connection of bolt flange, and bearing capacity is limited, therefore also inapplicable under high pressure operating mode.Normal floating head type, U-shaped tubular type or the fixed tube sheet type of adopting arranged in the tube bank of heat exchanger, wherein adopts heat exchanger part tube side, the shell side of first two mode not to participate in heat exchange, and heat exchange area is little; And the thermal stress of fixed tube-sheet exchanger is larger, expansion joint equitemperature compensating element, must be set, manufacturing process complexity.
Summary of the invention
For overcoming the not high pressure resistant and too large drawback of rigidity of existing heat exchanger, the object of this invention is to provide a kind of high-pressure horizontal heat exchanger that is applicable to cleaning medium evaporation, there is larger heat exchange area, less thermal stress, under high steam pressure, there is good sealing property.
Object of the present invention is achieved through the following technical solutions:
The present invention includes the shell side being formed by housing, deflection plate, the tube side and sliding saddle and the fixed saddle that are formed by left pipe box, right pipe box, left special-shaped tube sheet, right special-shaped tube sheet, heat-exchanging tube bundle; The both sides of lower housing portion are respectively provided with left special-shaped tube sheet, right special-shaped tube sheet, and the end face of left special-shaped tube sheet, the overhanging cylinder of right special-shaped tube sheet is connected with left pipe box, right pipe box respectively; Between left special-shaped tube sheet in housing and right special-shaped tube sheet, be provided with deflection plate uniformly at intervals, deflection plate is the circle that cuts circle hat, and the side that each deflection plate is cut circle hat is positioned at left side or the right side of deflection plate and is left and right along housing axis direction alternately arranges; The two ends of heat-exchanging tube bundle are connected on left special-shaped tube sheet, right special-shaped tube sheet through the pore on each deflection plate; Left pipe box end face is provided with tube side heating agent entrance sleeve, and right pipe box bottom surface is provided with tube side heating agent discharge connection, and housing end face is provided with shell side material steam outlet, and both sides, housing bottom surface are provided with shell side material inlet pipe and discharging tube.
On described left special-shaped tube sheet, right special-shaped tube sheet, be all connected with cylinder, the cylinder sidewall of left special-shaped tube sheet, right special-shaped tube sheet is sealedly connected on housing, and the cylinder end face of left special-shaped tube sheet, right special-shaped tube sheet is connected with left pipe box, right pipe box respectively.
The both sides of described housing bottom surface are connected with sliding saddle respectively and fixed saddle supports.
Described housing comprise left end socket, right end socket and be connected in left end socket and right end socket between cylindrical shell.
The diameter of described housing is greater than the diameter of heat-exchanging tube bundle, and shell length is greater than heat-exchanging tube bundle length, and left end socket and right end socket are convex head.
The quantity of described deflection plate is 3~10.
On described sliding saddle base plate, have two mounting holes, by the bolt support that is slidably connected; On described fixed saddle base plate, have two circular holes, be bolted to connection support.
Described convex head is dome head, elliposoidal end socket or dished (torispherical) head.
The invention has the beneficial effects as follows:
(1) shell side space and the utilization of tube side heat exchange area are abundant.Because special-shaped tube sheet has overhanging cylinder, shell cover is welded on this cylinder, and heat-exchanging tube bundle is coated on enclosure interior completely, and therefore compared to the U-shaped tubular type of routine and floating head type evaporation heater, shell side space and the utilization of tube side heat exchange area are more abundant.
(2) high temperature difference occasion thermal stress is little.General heat exchanger shell is single cylinder, and this heat exchanger shell end is welded with flexible good convex head, has certain distortion allowance, and the housing temperature difference can be used as thermal compensation device when larger, reduces the thermal stress producing while even eliminating work.
(3) high-pressure tightness is good.Abnormity tube sheet can rely on short cylinder structure that its bias welding on convex head is achieved, and the welding of tube sheet and end socket has guaranteed compared with the sealing property under high workload pressure.
(4) combined support of employing sliding saddle and fixed saddle, makes cylindrical shell retractable in the axial direction, reduces the thermal stress of cylindrical shell.
Accompanying drawing explanation
Fig. 1 is the structural representation of high-pressure horizontal heat exchanger of the present invention.
Fig. 2 is that A in Fig. 1 is to view.
Fig. 3 is that B in Fig. 1 is to view.
Fig. 4 is C-C cutaway view in Fig. 1.
Fig. 5 is D-D cutaway view in Fig. 1.
In figure: 1, housing, 2, shell side material inlet pipe, 3, sliding saddle, 4, left special-shaped tube sheet, 5, left pipe box, 6, tube side heating agent inlet tube, 7, shell side material steam outlet, 8, right pipe box, 9, tube side heating agent outlet, 10, right special-shaped tube sheet, 11, fixed saddle, 12, discharging tube, 13, heat-exchanging tube bundle, 14, deflection plate, 1.1 left end sockets, 1.2, cylindrical shell, 1.3, right end socket.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, comprise the shell side being formed by housing 1, deflection plate 14, the tube side and sliding saddle 3 and the fixed saddle 11 that are formed by left pipe box 5, right pipe box 8, left special-shaped tube sheet 4, right special-shaped tube sheet 10, heat-exchanging tube bundle 13; The both sides of housing 1 bottom are respectively provided with left special-shaped tube sheet 4, right special-shaped tube sheet 10, and the end face of left special-shaped tube sheet 4, right special-shaped tube sheet 10 overhanging cylinders is connected with left pipe box 5, right pipe box 8 respectively; Between left special-shaped tube sheet 4 in housing 1 and right special-shaped tube sheet 10, be provided with row's deflection plate 14 uniformly at intervals, as shown in Figure 4, deflection plate 14 is the circle that cuts circle hat, the side that each deflection plate 14 is cut circle hat is positioned at left side or the right side of deflection plate 14 and is alternately layout of left and right along housing 1 axis direction, making shell side fluid to be heated be " S " flows, as shown in Figure 4, in figure, arrow indication shell-side fluid flows to; The two ends of heat-exchanging tube bundle 13 are connected on left special-shaped tube sheet 4, right special-shaped tube sheet 10 through the pore on each deflection plate 14, and heat-exchanging tube bundle 13 is arranged along housing 1 axis direction; Left pipe box 5 end faces are provided with tube side heating agent entrance sleeve 6, and right pipe box 8 bottom surfaces are provided with tube side heating agent discharge connection 9, and housing 1 end face is provided with shell side material steam outlet 7, and housing 1 both sides, bottom surface are provided with shell side material inlet pipe 2 and discharging tube 12.
Left special-shaped tube sheet 4, right special-shaped tube sheet 10 have overhanging short cylinder structure, on left special-shaped tube sheet 4, right special-shaped tube sheet 10, be all connected with cylinder, the cylinder sidewall of left special-shaped tube sheet 4, right special-shaped tube sheet 10 is sealedly connected on housing 1, and the cylinder end face of left special-shaped tube sheet 4, right special-shaped tube sheet 10 is connected with left pipe box 5, right pipe box 8 respectively.
The both sides of housing 1 bottom surface are connected with respectively sliding saddle 3 and fixed saddle 11 supports.
Housing 1 comprises left end socket 1.1, right end socket 1.3 and is connected in the cylindrical shell 1.2 between left end socket 1.1 and right end socket 1.3.
The diameter of housing 1 is greater than the diameter of heat-exchanging tube bundle 13, and housing 1 length is greater than heat-exchanging tube bundle 13 length, and in overall heat-exchanging tube bundle 13 and left and right special- shaped tube sheet 4,10 major parts are coated on, left end socket 1.1 is convex head with right end socket 1.3.
The quantity of deflection plate 14 is 3~10.
As shown in Figure 2, on sliding saddle 3 base plates, have two mounting holes, by the bolt support that is slidably connected; As shown in Figure 3, on described fixed saddle 11 base plates, have two circular holes, be bolted to connection support.
Convex head is dome head, elliposoidal end socket or dished (torispherical) head.
The heat exchanger tube quantity of heat-exchanging tube bundle 13 is determined as calculated according to concrete operating mode.
Relative housing 1 downward bias of left and right special- shaped tube sheet 4,10 is felt at ease and is put, and is connected with left end socket 1.1, right end socket 1.3 respectively, and heat-exchanging tube bundle 13 tops have larger evaporating space.
Between each shell side and the parts of tube side, connect and can adopt the modes such as expanded joint, welding or expanded and welded tube joint to connect.Can be used for being connected of heat-exchanging tube bundle 13 and special- shaped tube sheet 4,10.
The layout of the perforate layout of deflection plate 14 and heat-exchanging tube bundle 13 and 4,10 perforates of special-shaped tube sheet is consistent.
The applicable cleaning medium of the present invention refers to free from foreign meter, less scaling cleaning fluid, such as water, liquid alcohol etc.
The specific embodiment of the invention course of work is as follows:
Take the yellow phosphoric tail gas Waste Heat Recovery of sulphur dioxide of phosphor chemical industry as example: enter left pipe box 5 using the yellow phosphoric tail gas of 1800 ℃ (P2O5) as heating agent from tube side heating agent inlet tube 6, be distributed in each pipeline of heat-exchanging tube bundle 13 through left special-shaped tube sheet 4, carry out heat exchange with shell side medium, be pooled in right pipe box 8 through right special-shaped tube sheet 10 again, discharged by tube side heating agent outlet 9, temperature is reduced to 786 ℃; Cleaning medium water enters housing 1 by shell side material inlet pipe 2, through deflection plate 14 baffling effects heat-exchanging tube bundle 13 gaps of flowing through, carry out heat exchange by the high temperature yellow phosphoric tail gas in tube wall and heat-exchanging tube bundle 13, its work liquid level is all the time higher than the extreme higher position of heat-exchanging tube bundle 13.Water undergoes phase transition through heat absorption rear section, and the steam that generates 170 ℃ is full of heat-exchanging tube bundle 13 upper spaces and draws from shell side material steam outlet 7; Unnecessary water is discharged from leakage fluid dram 12.Can be calculated, the logarithmic mean temperature difference (LMTD) between heat exchanger tube pass and shell reaches 1097 ℃, and under the condition of work of this high temperature difference, flexible structure of the present invention has reduced thermal stress; 170 ℃ time, Saturated water vapor pressure reaches 0.8MPa(8 atmospheric pressure), housing 1 has guaranteed the sealing under high pressure operating mode with the welding of special- shaped tube sheet 4,10.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.