CN110514031B - A combined tube program cryogenic refrigerant gasification heat exchange equipment - Google Patents
A combined tube program cryogenic refrigerant gasification heat exchange equipment Download PDFInfo
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- CN110514031B CN110514031B CN201910637286.7A CN201910637286A CN110514031B CN 110514031 B CN110514031 B CN 110514031B CN 201910637286 A CN201910637286 A CN 201910637286A CN 110514031 B CN110514031 B CN 110514031B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明涉及一种组合管程式深冷工质气化换热设备，包括依次连接的管箱Ⅰ、管箱Ⅱ、壳程和管箱Ⅲ；还包括连通管箱Ⅰ的空间、管箱Ⅱ的空间与管箱Ⅲ的空间的换热管组，所述换热管组贯穿所述管箱Ⅱ和壳程设置；所述管箱Ⅰ上设有用于输入管程介质的管程介质进口，管箱Ⅲ上设有用于输出管程介质的管程介质出口，壳程上分别设有用于输入壳程介质的壳程介质进口和用于输出壳程介质的壳程介质出口。本发明的换热设备结构紧凑，避免了壳程介质在换热管外产生结冰现象，提高了换热设备的运行可靠性。
The invention relates to a combined tube-pass cryogenic working medium gasification heat exchange equipment, which comprises a tube box I, a tube box II, a shell side and a tube box III which are connected in sequence; it also includes a space connected to the tube box I and a space of the tube box II. The heat exchange tube group between the space and the space of the tube box III, the heat exchange tube group is arranged through the tube box II and the shell side; the tube box I is provided with a tube side medium inlet for inputting the tube side medium, and the tube side medium inlet is provided on the tube box I. The box III is provided with a tube-side medium outlet for outputting the tube-side medium, and the shell-side is respectively provided with a shell-side medium inlet for inputting the shell-side medium and a shell-side medium outlet for outputting the shell-side medium. The heat exchange equipment of the invention has a compact structure, avoids the freezing phenomenon of the shell side medium outside the heat exchange tube, and improves the operation reliability of the heat exchange equipment.
Description
Technical Field
The invention belongs to the technical field of heat exchange, and particularly relates to combined pipe type cryogenic working medium gasification heat exchange equipment.
Background
Along with economic development, the problems of energy crisis and environmental pollution are increasingly highlighted, natural gas is widely applied as a clean energy with high calorific value, the natural gas in China mainly depends on import, the liquefied natural gas is transported to a receiving station near a port in China through a ship after being liquefied abroad, the liquefied natural gas is gasified into gaseous state and is overheated to normal temperature when in use, and gasification equipment is core equipment of the process.
The conventional gasification equipment comprises an open rack type gasifier and a gasifier with an intermediate medium.
The open-frame gasifier directly gasifies the liquefied natural gas through the heat exchange pipe by using seawater, the equipment occupies a large area and has low heat transfer efficiency, and the heat exchange pipe is easy to freeze at the liquefied natural gas inlet to influence the normal operation of the equipment;
the gasifier with the intermediate medium absorbs heat of seawater by using the intermediate medium (such as propane) with a low freezing point, then transfers the heat of the seawater to the liquefied natural gas to gasify the liquefied natural gas, and the gasified natural gas is further overheated to normal temperature. Although the freezing point of the intermediate medium is low, the icing phenomenon cannot be generated, but the structure is complex, and the production, operation and maintenance costs are high.
Disclosure of Invention
According to the problems in the prior art, the invention provides combined tube-pass type cryogenic working medium gasification heat exchange equipment which is compact in structure, avoids the phenomenon that a shell-side medium is frozen outside a heat exchange tube, and improves the operation reliability of the heat exchange equipment.
The invention adopts the following technical scheme:
a combined pipe type cryogenic working medium gasification heat exchange device comprises a pipe box I, a pipe box II, a shell pass and a pipe box III which are connected in sequence; the heat exchange tube group is communicated with the space of the tube box I, the space of the tube box II and the space of the tube box III, and the heat exchange tube group penetrates through the tube box II and the shell pass; the tube box I is provided with a tube pass medium inlet for inputting a tube pass medium, the tube box III is provided with a tube pass medium outlet for outputting the tube pass medium, and the shell pass is respectively provided with a shell pass medium inlet for inputting the shell pass medium and a shell pass medium outlet for outputting the shell pass medium.
Preferably, the tube box I comprises an end socket I and an equipment flange I which are connected through a tube box barrel I, the tube box II comprises an equipment flange II and a tube plate I which is also used as an equipment flange, the tube box III comprises an end socket II and an equipment flange III which are connected through a tube box barrel III, and the shell side comprises a shell side barrel, and the tube plate II and the tube plate III which are respectively arranged at two ends of the shell side barrel and are also used as the equipment flange; the equipment flange I is connected with the pipe plate I through a flange, the equipment flange II is connected with the pipe plate II through a flange, and the pipe plate III is connected with the equipment flange III through a flange; the tube pass medium inlet is arranged on the seal head I, the tube pass medium outlet is arranged on the seal head II, and the shell pass medium inlet and the shell pass medium outlet are respectively arranged at two ends of the shell pass cylinder.
Preferably, the heat exchange tube group comprises a heat exchange tube bundle I, a heat exchange tube bundle II and a heat exchange tube bundle III; the two end parts of the heat exchange tube bundle I and the heat exchange tube bundle III are both in a through state, one end part of the heat exchange tube bundle II is in a through state, and the other end part of the heat exchange tube bundle II is in a closed state; the heat exchange tube bundle II penetrates through the tube plate II, the penetrating end of the heat exchange tube bundle II is communicated with the space of the tube box II, and the closed end of the heat exchange tube bundle II is arranged in the space of the shell pass; the heat exchange tube bundle I penetrates through the tube plate I and is inserted into the heat exchange tube bundle II, one end of the heat exchange tube bundle I is communicated with the space of the tube box I, the other end of the heat exchange tube bundle I is arranged close to the closed end of the heat exchange tube bundle II, and the channel of the heat exchange tube bundle I is communicated with the channel of the heat exchange tube bundle II; spiral fins for supporting the heat exchange tube bundle I and circulating tube pass media are arranged between the outer tube surface of the heat exchange tube bundle I and the inner tube surface of the heat exchange tube bundle II; and the two end parts of the heat exchange tube bundle III are both in a through state, the heat exchange tube bundle III penetrates through the tube plate II and the tube plate III, one end of the heat exchange tube bundle III is communicated with the space of the tube box II, and the other end of the heat exchange tube bundle III is communicated with the space of the tube box III.
Preferably, the space of the tube box I and the tube-in channel of the heat exchange tube bundle I form a first tube pass of the heat exchange device, the tube-in channel of the heat exchange tube bundle II, the space of the tube box II, the tube-in channel of the heat exchange tube bundle III and the space of the tube box III form a second tube pass of the heat exchange device, and the space of the shell pass is the shell pass of the heat exchange device.
More preferably, the heat exchange tube bundle I, the heat exchange tube bundle II and the heat exchange tube bundle III are all arranged in parallel to the axial direction of the shell side; and the heat exchange tube bundle I and the heat exchange tube bundle II are both positioned at the lower part of the heat exchange tube bundle III.
More preferably, a plurality of baffle plates for guiding flow are arranged in the space of the shell pass, and the baffle plates are perpendicular to the axial direction of the shell pass; the baffle plates are round segmental flat plates, notches are formed in the positions, close to the inner wall of the shell pass cylinder, of the baffle plates, and the notches of the two adjacent baffle plates are arranged in a vertically symmetrical mode relative to the axis of the shell pass in the projection of the radial plane of the shell pass.
More preferably, the distance between two adjacent baffle plates, the distance between the tube plate III and the baffle plate close to the tube plate III, and the distance between the tube plate II and the baffle plate close to the tube plate II are equal; the gap of the baffle plate close to the shell pass medium inlet is arranged far away from the shell pass medium inlet, and the gap of the baffle plate close to the shell pass medium outlet is arranged far away from the shell pass medium outlet; and the heat exchange tube bundle II and the heat exchange tube bundle III both penetrate through the baffle plate, and the closed end of the heat exchange tube bundle II is arranged between the tube plate III and the baffle plate close to the tube plate III.
Preferably, a pull rod distance tube is further arranged in the space of the shell pass, and the pull rod distance tube comprises a pull rod and a plurality of sleeves sleeved on the pull rod; the pull rod penetrates through the baffle plate, and one end of the pull rod is fixedly connected with the tube plate II; the sleeves are respectively arranged between the baffle plate and the tube plate II and between two adjacent baffle plates; the other end of the pull rod is sleeved with a fastener for limiting the baffle plate.
Still further preferably, the shell-side medium inlet is positioned between the tube plate III and the baffle plate close to the tube plate III, and the shell-side medium inlet is arranged close to the tube plate III; and the shell side medium outlet is positioned between the tube plate II and the baffle plate close to the tube plate II, and the shell side medium outlet is arranged close to the tube plate II.
More preferably, the number of the heat exchange tube bundles I, II and III is multiple; the pull rod distance tubes are arranged in a plurality of numbers and are uniformly distributed.
The invention has the beneficial effects that:
1) the heat exchange equipment comprises the first tube side, the second tube side and the shell side, and the cryogenic working medium in the first tube side and the high-freezing-point medium in the shell side are effectively separated through the gap between the heat exchange tube bundle I and the heat exchange tube bundle II in the combined tube side mode of the first tube side and the second tube side, so that the phenomenon that the high-freezing-point medium in the shell side is frozen outside the heat exchange tube when the cryogenic working medium in the first tube side is gasified is effectively avoided, and the operation reliability of the heat exchange equipment is improved.
2) According to the heat exchange device, the heat exchange tube bundle I of the first tube pass is used for gasifying the tube pass cryogenic working medium, the heat exchange tube bundle II of the first tube pass is used for heating the tube pass cryogenic working medium, and the heat exchange tube bundle III of the second tube pass is used for overheating the tube pass cryogenic working medium, so that the three processes of gasification, heating and overheating in the process of gasifying the cryogenic working medium are effectively realized through one heat exchange device, and the heat exchange device has the advantages of compact structure and high working efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a heat exchange device of the present invention.
Fig. 2 is a schematic structural view of a pull rod distance tube of the invention.
FIG. 3 is a schematic view of the flow direction of the tube-side medium and the shell-side medium in the heat exchange device of the present invention.
Reference numerals: 1-tube box I, 2-tube box II, 3-shell pass, 4-tube box III, 5-heat exchange tube group, a-tube pass medium inlet, b-tube pass medium outlet, c-shell pass medium inlet, d-shell pass medium outlet, 11-end enclosure I, 12-tube box body I, 13-equipment flange I, 21-tube plate I, 22-tube box body II, 23-equipment flange II, 31-tube plate II, 32-tube plate III, 33-shell pass cylinder body, 34-baffle plate, 35-pull rod spacing tube, 41-end enclosure II, 42-tube box body III, 43-equipment flange III, 51-heat exchange tube bundle I, 52-heat exchange tube bundle II, 53-heat exchange tube bundle III, 54-spiral fin, 341-notch, 351-pull rod, 352-sleeve, 353-fastener.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the combined pipe type cryogenic working medium gasification heat exchange equipment comprises a pipe box I1, a pipe box II 2, a shell pass 3 and a pipe box III 4 which are connected in sequence; the heat exchange tube group 5 is communicated with the space of the tube box I1, the space of the tube box II 2 and the space of the tube box III 4, and the heat exchange tube group 5 penetrates through the tube box II 2 and the shell pass 3; the tube box I1 is provided with a tube side medium inlet a for inputting a tube side medium, the tube box III 4 is provided with a tube side medium outlet b for outputting the tube side medium, and the shell side 3 is respectively provided with a shell side medium inlet c for inputting a shell side medium and a shell side medium outlet d for outputting the shell side medium.
The tube box I1 comprises an end socket I11 and an equipment flange I13 which are connected through a tube box barrel I12, the tube box II 2 comprises an equipment flange II 23 and a tube plate I21 which is also used as an equipment flange which are connected through a tube box barrel II 22, the tube box III 4 comprises an end socket II 41 and an equipment flange III 43 which are connected through a tube box barrel III 42, and the shell pass 3 comprises a shell pass barrel 33, and a tube plate II 31 and a tube plate III 32 which are respectively arranged at two ends of the shell pass barrel 33 and are also used as equipment flanges; the equipment flange I13 is connected with the tube plate I21 through a flange, the equipment flange II 23 is connected with the tube plate II 31 through a flange, and the tube plate III 32 is connected with the equipment flange III 43 through a flange; the tube side medium inlet a is arranged on the seal head I11, the tube side medium outlet b is arranged on the seal head II 41, and the shell side medium inlet c and the shell side medium outlet d are respectively arranged at two ends of the shell side cylinder body 33.
The heat exchange tube group 5 comprises a heat exchange tube bundle I51, a heat exchange tube bundle II 52 and a heat exchange tube bundle III 53; the two end parts of the heat exchange tube bundle I51 and the heat exchange tube bundle III 53 are communicated, one end part of the heat exchange tube bundle II 52 is communicated, and the other end part of the heat exchange tube bundle II 52 is closed; the heat exchange tube bundle II 52 penetrates through the tube plate II 31, the penetrating end of the heat exchange tube bundle II 52 is communicated with the space of the tube box II 2, and the closed end of the heat exchange tube bundle II 52 is arranged in the space of the shell pass 3; the heat exchange tube bundle I51 penetrates through the tube plate I21, the heat exchange tube bundle I51 is inserted into the heat exchange tube bundle II 52, one end of the heat exchange tube bundle I51 is communicated with the space of the tube box I1, the other end of the heat exchange tube bundle I51 is arranged close to the closed end of the heat exchange tube bundle II 52, and the channel of the heat exchange tube bundle I51 is communicated with the channel of the heat exchange tube bundle II 52; spiral fins 54 for supporting the heat exchange tube bundle I51 and circulating tube pass media are arranged between the outer tube surface of the heat exchange tube bundle I51 and the inner tube surface of the heat exchange tube bundle II 52; and the two end parts of the heat exchange tube bundle III 53 are both in a through state, the heat exchange tube bundle III 53 penetrates through the tube plates II 31 and III 32, one end of the heat exchange tube bundle III 53 is communicated with the space of the tube box II 2, and the other end of the heat exchange tube bundle III 53 is communicated with the space of the tube box III 4.
The space of the tube box I1 and the in-tube channel of the heat exchange tube bundle I51 form a first tube pass of the heat exchange device, the in-tube channel of the heat exchange tube bundle II 52, the space of the tube box II 2, the in-tube channel of the heat exchange tube bundle III 53 and the space of the tube box III 4 form a second tube pass of the heat exchange device, and the space of the shell pass 3 is the shell pass of the heat exchange device.
Specifically, the heat exchange tube bundle I51, the heat exchange tube bundle II 52 and the heat exchange tube bundle III 53 are all arranged in parallel to the axial direction of the shell pass 3; and the heat exchange tube bundle I51 and the heat exchange tube bundle II 52 are both positioned at the lower part of the heat exchange tube bundle III 53.
A plurality of baffle plates 34 for guiding flow are arranged in the space of the shell pass 3, and the baffle plates 34 are perpendicular to the axial direction of the shell pass 3; the plurality of baffle plates 34 are all segmental flat plates, notches 341 are formed in the positions, close to the inner wall of the shell pass cylinder 33, of the baffle plates, and the notches 341 of the two adjacent baffle plates 34 are arranged in a vertically symmetrical mode on the axis of the shell pass 3 in the projection of the radial plane of the shell pass 3.
Specifically, the size of the gap 341 is set to be one third of the corresponding circular shape of the baffle 34.
The distance between two adjacent baffles 34, the distance between the tube plate III 32 and the baffle 34 close to the tube plate III 32, and the distance between the tube plate II 31 and the baffle 34 close to the tube plate II 31 are equal; the notch 341 of the baffle plate 34 close to the shell-side medium inlet c is arranged far away from the shell-side medium inlet c, and the notch 341 of the baffle plate 34 close to the shell-side medium outlet d is arranged far away from the shell-side medium outlet d; and the heat exchange tube bundle II 52 and the heat exchange tube bundle III 53 are arranged through the baffle plate 34, and the closed end of the heat exchange tube bundle II 52 is arranged between the tube plate III 32 and the baffle plate 34 close to the tube plate III 32.
As shown in fig. 2, a pull rod distance tube 35 is further disposed in the space of the shell side 3, and the pull rod distance tube 35 includes a pull rod 351 and a plurality of sleeves 352 sleeved on the pull rod 351; the pull rod 351 penetrates through the baffle plate 34, and one end of the pull rod 351 is fixedly connected with the tube plate II 31; the sleeves 352 are respectively arranged between the baffle plate 34, the tube plate II 31 and two adjacent baffle plates 34; the other end of the pull rod 351 is sleeved with a fastener 353 for defining the baffle 34.
The shell-side medium inlet c is positioned between the tube plate III 32 and the baffle plate 34 close to the tube plate III 32, and is arranged close to the tube plate III 32; the shell-side medium outlet d is positioned between the tube plate II 31 and the baffle plate 34 close to the tube plate II 31, and the shell-side medium outlet d is arranged close to the tube plate II 31.
The number of the heat exchange tube bundles I51, II 52 and III 53 is multiple; the plurality of pull rod distance tubes 35 are uniformly distributed.
As shown in fig. 3, the solid-line arrows indicate the flow direction of the tube-side medium, and the dashed-line arrows indicate the flow direction of the shell-side medium. When the heat exchange equipment is used, a cryogenic working medium enters the tube header I1 from the tube side medium inlet a, then enters the heat exchange tube bundle II 52 from the tube header I1 through an internal channel of the heat exchange tube bundle I51, flows into the tube header II 2 from a channel between the outer tube surface of the heat exchange tube bundle I51 and the inner tube surface of the heat exchange tube bundle II 52, flows into the tube header III 4 from an internal channel of the heat exchange tube bundle III 53, and finally is output from the tube side medium outlet b of the tube header III 4; meanwhile, the heat medium of the shell side flows in from a shell side medium inlet c, is guided by the plurality of baffle plates 34, flows in a cross flow mode with the media in the heat exchange tube bundle I51, the heat exchange tube bundle II 52 and the heat exchange tube bundle III 53, and finally flows out from a shell side medium outlet d.
In the flowing process of the cryogenic working medium, firstly, heat is absorbed in the heat exchange tube bundle I51 and gasified into low-temperature gas, the gasified low-temperature gas flows in a channel between the outer pipe surface of the heat exchange tube bundle I51 and the inner pipe surface of the heat exchange tube bundle II 52, on one hand, the heat of a shell pass medium is absorbed through the wall surface of the heat exchange tube bundle II 52, on the other hand, the heat is transferred to the liquid cryogenic working medium in the heat exchange tube bundle I51 through the wall surface of the heat exchange tube bundle I51 and gasified, the gasified gas finally absorbs the heat at the wall surface of the heat exchange tube bundle III 53, and the normal-temperature gas required by industrial production is formed through overheating.
In conclusion, the invention provides the combined pipe-type cryogenic working medium gasification heat exchange equipment which is compact in structure, avoids the phenomenon that a shell side medium is frozen outside the heat exchange pipe, and improves the operation reliability of the heat exchange equipment.
Claims (7)
1. The utility model provides a combination pipe form cryrogenic working medium gasification indirect heating equipment which characterized in that: the device comprises a pipe box I (1), a pipe box II (2), a shell pass (3) and a pipe box III (4) which are connected in sequence; the heat exchange tube group (5) is communicated with the space of the tube box I (1), the space of the tube box II (2) and the space of the tube box III (4), and the heat exchange tube group (5) penetrates through the tube box II (2) and the shell pass (3); a tube side medium inlet (a) for inputting a tube side medium is formed in the tube box I (1), a tube side medium outlet (b) for outputting the tube side medium is formed in the tube box III (4), and a shell side medium inlet (c) for inputting the shell side medium and a shell side medium outlet (d) for outputting the shell side medium are respectively formed in the shell side (3);
the tube box I (1) comprises an end socket I (11) and an equipment flange I (13) which are connected through a tube box barrel I (12), the tube box II (2) comprises an equipment flange II (23) and a tube plate I (21) which is also used as the equipment flange, the tube box II (4) comprises an end socket II (41) and an equipment flange III (43) which are connected through a tube box barrel III (42), and the shell pass (3) comprises a shell pass barrel (33), and a tube plate II (31) and a tube plate III (32) which are respectively arranged at two ends of the shell pass barrel (33) and are also used as the equipment flange; the equipment flange I (13) is connected with the tube plate I (21) through a flange, the equipment flange II (23) is connected with the tube plate II (31) through a flange, and the tube plate III (32) is connected with the equipment flange III (43) through a flange; the tube side medium inlet (a) is arranged on the seal head I (11), the tube side medium outlet (b) is arranged on the seal head II (41), and the shell side medium inlet (c) and the shell side medium outlet (d) are respectively arranged at two ends of the shell side cylinder (33);
the heat exchange tube group (5) comprises a heat exchange tube bundle I (51), a heat exchange tube bundle II (52) and a heat exchange tube bundle III (53); the two end parts of the heat exchange tube bundle I (51) and the heat exchange tube bundle III (53) are communicated, one end part of the heat exchange tube bundle II (52) is communicated, and the other end part of the heat exchange tube bundle II (52) is closed; the heat exchange tube bundle II (52) penetrates through the tube plate II (31), the penetrating end of the heat exchange tube bundle II (52) is communicated with the space of the tube box II (2), and the closed end of the heat exchange tube bundle II (52) is arranged in the space of the shell pass (3); the heat exchange tube bundle I (51) penetrates through the tube plate I (21) and is inserted into the heat exchange tube bundle II (52), one end of the heat exchange tube bundle I (51) is communicated with the space of the tube box I (1), the other end of the heat exchange tube bundle I (51) is arranged close to the closed end of the heat exchange tube bundle II (52), and the channel of the heat exchange tube bundle I (51) is communicated with the channel of the heat exchange tube bundle II (52); spiral fins (54) for supporting the heat exchange tube bundle I (51) and circulating tube pass media are arranged between the outer tube surface of the heat exchange tube bundle I (51) and the inner tube surface of the heat exchange tube bundle II (52); the two end parts of the heat exchange tube bundle III (53) are communicated, the heat exchange tube bundle III (53) penetrates through the tube plate II (31) and the tube plate III (32) to be arranged, one end of the heat exchange tube bundle III (53) is communicated with the space of the tube box II (2), and the other end of the heat exchange tube bundle III (53) is communicated with the space of the tube box III (4);
the space of the tube box I (1) and the tube-in channel of the heat exchange tube bundle I (51) form a first tube pass of the heat exchange equipment, the tube-in channel of the heat exchange tube bundle II (52), the space of the tube box II (2), the tube-in channel of the heat exchange tube bundle III (53) and the space of the tube box III (4) form a second tube pass of the heat exchange equipment, and the space of the shell pass (3) is the shell pass of the heat exchange equipment;
one end of the heat exchange tube bundle I (51) which is in space communication with the tube box I (1) is an inlet end, the other end of the heat exchange tube bundle I (51) which is close to the closed end of the heat exchange tube bundle II (52) is an outlet end, the heat exchange tube bundle I (51) penetrates through the tube box II (2) from the inlet end and is inserted into the heat exchange tube bundle II (52) through the through end of the heat exchange tube bundle II (52), one section of the heat exchange tube bundle I (51) which penetrates through the tube box II (2) is a first tube section, and one section of the heat exchange tube bundle I (51) which is positioned in the heat exchange tube bundle II (52);
the tube pass working medium enters the heat exchange tube bundle I (51) through the inlet end of the heat exchange tube bundle I (51), and the tube pass working medium enters the heat exchange tube bundle II (52) through the outlet end of the heat exchange tube bundle I (51), enters the tube box II (2) through the through end of the heat exchange tube bundle II (52), and then enters the heat exchange tube bundle III (53) through the tube box II (2); in the process, the tube side working medium in the first tube section and the tube side working medium in the tube box II (2) are subjected to heat exchange, the tube side working medium in the second tube section and the tube side working medium in the heat exchange tube bundle II (52) are subjected to heat exchange, and the tube side working medium in the heat exchange tube bundle II (52) and the tube side working medium in the heat exchange tube bundle III (53) are subjected to heat exchange with the shell side medium outside the heat exchange tube bundle II (52) and the heat exchange tube bundle III (53) in the operation process, so that the icing phenomenon is prevented from occurring outside the heat exchange tube bundle I (51), the heat exchange tube bundle II (.
2. The combined pipe type cryogenic working medium gasification heat exchange device according to claim 1, characterized in that: the heat exchange tube bundle I (51), the heat exchange tube bundle II (52) and the heat exchange tube bundle III (53) are all arranged in parallel to the axial direction of the shell pass (3); and the heat exchange tube bundle I (51) and the heat exchange tube bundle II (52) are both positioned at the lower part of the heat exchange tube bundle III (53).
3. The combined pipe type cryogenic working medium gasification heat exchange device according to claim 2, characterized in that: a plurality of baffle plates (34) for guiding flow are arranged in the space of the shell pass (3), and the baffle plates (34) are vertical to the axial direction of the shell pass (3); the baffle plates (34) are all circular segmental flat plates, notches (341) are formed in the positions, close to the inner wall of the shell pass cylinder (33), of the baffle plates, and the notches (341) of the two adjacent baffle plates (34) are arranged in a vertically symmetrical mode on the axis of the shell pass (3) in the projection of the radial plane of the shell pass (3).
4. The combined pipe type cryogenic working medium gasification heat exchange device according to claim 3, characterized in that: the distance between two adjacent baffle plates (34), the distance between the tube plate III (32) and the baffle plate (34) close to the tube plate III (32), and the distance between the tube plate II (31) and the baffle plate (34) close to the tube plate II (31) are equal; the notch (341) of the baffle plate (34) close to the shell side medium inlet (c) is arranged far away from the shell side medium inlet (c), and the notch (341) of the baffle plate (34) close to the shell side medium outlet (d) is arranged far away from the shell side medium outlet (d); and the heat exchange tube bundle II (52) and the heat exchange tube bundle III (53) both penetrate through the baffle plate (34), and the closed end of the heat exchange tube bundle II (52) is arranged between the tube plate III (32) and the baffle plate (34) close to the tube plate III (32).
5. The combined pipe type cryogenic working medium gasification heat exchange device according to claim 4, characterized in that: a pull rod distance tube (35) is further arranged in the space of the shell pass (3), and the pull rod distance tube (35) comprises a pull rod (351) and a plurality of sleeves (352) sleeved on the pull rod (351); the pull rod (351) penetrates through the baffle plate (34), and one end part of the pull rod (351) is fixedly connected with the tube plate II (31); the sleeves (352) are respectively arranged between the baffle plate (34), the tube plate II (31) and two adjacent baffle plates (34); the other end of the pull rod (351) is sleeved with a fastener (353) for limiting the baffle plate (34).
6. The combined pipe type cryogenic working medium gasification heat exchange device according to claim 3, characterized in that: the shell-side medium inlet (c) is positioned between the tube plate III (32) and the baffle plate (34) close to the tube plate III (32), and is arranged close to the tube plate III (32); the shell side medium outlet (d) is positioned between the tube plate II (31) and the baffle plate (34) close to the tube plate II (31), and the shell side medium outlet (d) is arranged close to the tube plate II (31).
7. The combined pipe type cryogenic working medium gasification heat exchange device according to claim 5, characterized in that: the heat exchange tube bundle I (51), the heat exchange tube bundle II (52) and the heat exchange tube bundle III (53) are all provided in plurality; the pull rod distance pipes (35) are arranged in a plurality and are uniformly distributed.
Priority Applications (1)
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| CN111457762A (en) * | 2020-04-08 | 2020-07-28 | 无锡蓝海工程设计有限公司 | Heat exchanger with double tube boxes and double tube diameters |
| CN111678370B (en) * | 2020-06-17 | 2021-06-01 | 中国航空发动机研究院 | Anti-solidification heat exchanger |
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