CN203949534U - A kind of rod baffle heat exchanger of built-in expansion joint - Google Patents

A kind of rod baffle heat exchanger of built-in expansion joint Download PDF

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Publication number
CN203949534U
CN203949534U CN201420260096.0U CN201420260096U CN203949534U CN 203949534 U CN203949534 U CN 203949534U CN 201420260096 U CN201420260096 U CN 201420260096U CN 203949534 U CN203949534 U CN 203949534U
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CN
China
Prior art keywords
shell
expansion joint
tube
heat exchanger
rod baffle
Prior art date
Application number
CN201420260096.0U
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Chinese (zh)
Inventor
王守杰
陈鸣鸣
刘军
杨宽利
霍耿磊
宋阳
宁波
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航天长征化学工程股份有限公司
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Priority to CN201420260096.0U priority Critical patent/CN203949534U/en
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Publication of CN203949534U publication Critical patent/CN203949534U/en

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Abstract

The utility model discloses a kind of rod baffle heat exchanger of built-in expansion joint, it comprises bobbin carriage assembly, housing unit, tube bundle assembly and expansion joint assembly; Bobbin carriage assembly comprises bobbin carriage cylindrical shell, bobbin carriage end socket, channel flange, gas access and gas distributor; Tube bundle assembly comprises tube bank, left tube sheet and the right tube sheet at tube bank two ends, and tube bundle assembly also comprises pipe nipple, conical head; Expansion joint assembly comprises expansion joint and flange ring; Housing unit comprises shell-side cylinder, shell-side head and reinforced pipe; Tube bundle assembly is positioned at shell-side cylinder inside, and reinforced pipe extends to shell-side head outside by shell-side head inside; Shell-side cylinder is provided with shell flange near bobbin carriage one end, and the channel flange of shell flange and bobbin carriage assembly clamps left tube sheet; Right tube sheet is floating structure, and it is connected with the large end of conical head by pipe nipple; The small end of conical head is connected with expansion joint, and the end of expansion joint is flange ring, and flange ring is connected with the end part seal of the reinforced pipe of housing unit.

Description

A kind of rod baffle heat exchanger of built-in expansion joint
Technical field
The utility model relates to a kind of heat exchanger, relates in particular to the shell-and-tube heat exchanger in chemical enterprise.
Background technology
Heat exchanger is the common equipment in chemical enterprise.Traditional shell-and-tube heat exchanger respectively has shortcoming: movable tube sheets heat exchanger structure is comparatively complicated; U-shaped heat exchange of heat pipe long flow path, resistance is large, diameter is large; Fixed tube-sheet exchanger can be subject to temperature difference influence and can not change tube bank and clean; Fill out letter formula heat exchanger and be generally used for the operating mode that pressure is lower, packing seal is easily revealed.Modern chemical industry technology often needs high pressure, the heat exchanger of large flow, and traditional heat exchangers can not meet the demands, and therefore needs utility model new type heat exchanger to meet modern technologies and requires and improve heat exchange efficiency, meets security simultaneously.
Concrete, there is following problem of failing to properly settle in existing shell-and-tube heat exchanger:
1, Tube Sheet of Heat Exchanger shell side temperature difference is larger, and tube bank and the shell-side cylinder larger displacement difference of the different generations of after heat bulk of being heated, cause very large axial temperature difference stress; The heat exchanger that tradition solves shell thermal (temperature difference) stress is generally arranged on expansion joint on housing, when pressure is high, diameter is when large, causes that expansion joint wall thickness is large, compensation rate is little and difficult design;
2, U-shaped heat exchange of heat pipe has two tube sides at least, cannot adopt single channel to reduce tube side flow resistance, and increase U-shaped heat exchange of heat pipe diameter, can increase design difficulty and manufacturing cost;
3, the pressure of Tube Sheet of Heat Exchanger shell side is high but pressure reduction is little, and the structures such as tube sheet and expansion joint are excessive by total head designing quality, and cost is very high;
4, equipment can accumulate dregs after operation a period of time, often needs disassembly, cleaning maintenance, adopts general flange connection type, and structure will be too complicated;
5, traditional heat exchanger carrys out water conservancy diversion heat exchange by deflection plate is set at shell side, and deflection plate also can increase the flow resistance of shell side simultaneously.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned one or more deficiency of the prior art, a kind of rod baffle heat exchanger of built-in expansion joint is provided, it can properly settle the thermal (temperature difference) stress problem between shell journey, when reducing expansion joint diameter, provides reliable compensation rate; The utility model adopts the design of single tube journey and rod baffle can effectively reduce shell journey flow resistance.
The utility model solves the technical scheme that its technical problem adopts:
A rod baffle heat exchanger for built-in expansion joint, comprises bobbin carriage assembly, housing unit, tube bundle assembly and expansion joint assembly; Described bobbin carriage assembly comprises bobbin carriage end socket, bobbin carriage cylindrical shell and channel flange; Described tube bundle assembly comprises tube bank, and tube bank two ends are respectively left tube sheet and right tube sheet, and tube bundle assembly also comprises pipe nipple, conical head; Described expansion joint assembly comprises expansion joint and flange ring; Described housing unit comprises shell-side cylinder, shell-side head and reinforced pipe; Above-mentioned tube bundle assembly is positioned at shell-side cylinder inside, and above-mentioned reinforced pipe extends to shell-side head outside by shell-side head inside; Above-mentioned shell-side cylinder is provided with shell flange near bobbin carriage one end, and the channel flange of shell flange and above-mentioned bobbin carriage clamps left tube sheet; Right tube sheet is floating structure, and it is connected with the large end of conical head by pipe nipple; The small end of conical head is connected with expansion joint, and the end of expansion joint is flange ring, and flange ring is connected with the end part seal of the reinforced pipe of housing unit.
Above-mentioned expansion joint component design is in enclosure interior but not in shell-side cylinder, one end is connected with conical head, and the other end is connected with reinforced pipe, has both solved the problem of shell journey differential expansion, has reduced again expansion joint size.
As a kind of preferred embodiment of the present utility model, above-mentioned bobbin carriage assembly is air inclusion entrance and gas distributor also, and the end of bobbin carriage end socket is provided with the first entrance;
The tube bank of described tube bundle assembly is arranged and is formed by a plurality of heat exchanger tubes that are parallel to each other, and gripper shoe is by tube bundle support; And/or
Described housing unit also comprises saddle; On both sides in shell-side cylinder, be respectively arranged with the second entrance and the second outlet.
As a kind of preferred embodiment of the present utility model, heat exchanger tube pass adopts single channel, has reduced tube side fluid resistance.Described tube side medium is entered by the first entrance, by reinforced pipe, is discharged.Shell side adopts rod baffle structure, and shell side medium is entered by described the second entrance, by the second outlet, is discharged.
As a kind of preferred embodiment of the present utility model, above-mentioned shell-side head is ball sealing head, perforate on ball sealing head, and reinforced pipe extends one section to ball sealing head is inner, and is connected with flange ring.
As a kind of preferred embodiment of the present utility model, between above-mentioned expansion joint and reinforced pipe, with flange ring and securing member compress gasket, seal, flange is removable, restrains removable; This mode is easy to realize the most, also the most quick detachable installation.
As a kind of improvement of above-mentioned embodiment, described flange ring is inverse flange structure, and the compress gasket of flange ring is arranged on the outside of bolt.
As a kind of preferred embodiment of the present utility model, above-mentioned gripper shoe is a plurality of, and it is along the setting of tube bank axial segmentation.
As a kind of improvement of above-mentioned preferred embodiment, described gripper shoe includes fixedly ring flat-plate and be distributed in the rod baffle on ring flat-plate of rod baffle.
As a kind of improvement of above-mentioned preferred embodiment, the rod baffle in described same gripper shoe is parallel to each other, and rod baffle layering is through tube bank, vertical with tube bank, and the rod baffle of adjacent shore plates is an angle of 90 degrees and distributes.
As a kind of improvement of above-mentioned preferred embodiment, described ring flat-plate is axially uniformly distributed along tube bank, forms the rod baffle of multilayer angular misalignment.
The above-mentioned tube bank being comprised of heat exchanger tube is spacing by rod baffle, and rod baffle has also played increase turbulent flow simultaneously, the effect that reduces dead band and improve heat transfer effect.
The beneficial effects of the utility model are as follows:
1, the heat exchanger that tradition solves shell thermal (temperature difference) stress is generally arranged on expansion joint on housing, but when pressure is high, diameter causes when large that expansion joint wall thickness is large, compensation rate is little and difficult design.It is upper that the utility model is arranged on tube bank by expansion joint, can reduce diameter and evade the difficulty that expansion joint brings is set on housing;
2, the utility model tube bank part adopts pressure differential method design, in conjunction with the feature of movable tube sheets heat exchanger and fixed tube-sheet exchanger, carries out structural design, has not only saved material, has also simplified the overall structure of heat exchanger;
3, the utility model has changed the arrangement of deflection plate, and shell side adopts rod baffle to replace traditional baffle arrangement, and rod baffle structure effectively reduces tube bundle vibration, reduces shell-side pressure drop simultaneously and improves heat transfer property; Heat exchanger tube in tube bank is clamped fixing by the rod baffle of different angles, limit its radially activity.
4, change the joint and seal form of heat exchanger tube pass and shell side, adopted reinforced pipe with inverse flange, heat exchanger tube pass to be connected with shell side, reduced materials'use amount, guaranteed good sealing and dismounting effect simultaneously.
In sum, the rod baffle heat exchanger of the disclosed built-in expansion joint of the utility model, can effectively solve thermal (temperature difference) stress problem between shell journey; Can also improve tube side flow, reduce tube side resistance and improve heat exchange efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of embodiment of the utility model;
Fig. 2 is a kind of structural representation of gripper shoe 6 in Fig. 1;
Fig. 3 be with Fig. 2 in the structural representation of the adjacent gripper shoe of gripper shoe 6;
Fig. 4 is the structural representation of expansion joint 12 and flange ring 11.
Description of reference numerals:
1-bobbin carriage end socket, 2-bobbin carriage cylindrical shell, 3-channel flange, the left tube sheet of 4-, 5-shell flange, 6-gripper shoe, 7-heat exchanger tube, 8-shell-side cylinder, 9-shell-side head, 10-reinforced pipe, 11-flange ring, 12-expansion joint, 13-conical head, 14-pipe nipple, the right tube sheet of 15-, 16-saddle, 17-gas distributor, 18-the first entrance, 19-the second outlet, 20-the second entrance, 61-ring flat-plate, 62-rod baffle.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model specific embodiment is described:
The utility model discloses a kind of rod baffle heat exchanger of built-in expansion joint, Fig. 1 shows a kind of specific embodiment of the present utility model, as shown in Figure 1, the rod baffle heat exchanger of the shown a kind of built-in expansion joint of the present embodiment, it comprises bobbin carriage end socket 1, bobbin carriage cylindrical shell 2, channel flange 3, left tube sheet 4, shell flange 5, gripper shoe 6, heat exchanger tube 7, shell-side cylinder 8, ball sealing head, reinforced pipe 10, flange ring 11, expansion joint 12, conical head 13, pipe nipple 14, right tube sheet 15, saddle 16, gas distributor 17;
Bobbin carriage end socket 1 forms bobbin carriage with bobbin carriage cylindrical shell 2, channel flange 3, gas distributor 17; Shell flange 5 forms housing unit with shell-side cylinder 8, ball sealing head, reinforced pipe 10, saddle 16, and flange ring 11 and expansion joint 12 form expansion joint assembly, and remaining part forms tube bundle assembly;
As shown in Figure 1, the left tube sheet 4 of tube bundle assembly adopts clamp structure, and the right tube sheet 15 of tube side gas vent side adopts floating structure; Right tube sheet 15 joins by pipe nipple 14 and the large end of conical head 13, and the small end of conical head 13 is connected with expansion joint 12, between reinforced pipe 10 ends of the flange ring 11 of expansion joint 12 ends and housing unit, with securing member compress gasket, seals.
Traditional heat exchangers tube side and shell side joint and seal form are generally the type of attachment of flange bolt, and concrete is by the flange with bobbin carriage welding and with the flange of shell side welding, tube sheet to be clamped and is connected; As shown in Figure 1, the utility model adopts at shell-side head 9(ball sealing head) upper direct perforate, by a pipe nipple 14, shell side and tube side are separated; For shell side and tube side can be split, designed flange ring 11, this flange ring 11 is placed on shell side inside, and adopts pressure differential method to design, and its size is reduced greatly, has saved material;
Another of flange ring 11 of the present utility model and the in the past difference of flange are in the outside that is arranged on bolt in pad, and the benefit arranging like this facilitates the installation of pad on the one hand, can reduce on the other hand the thickness of reinforced pipe 10.In order to guarantee that reinforced pipe 10 can bear two-sided corrosion, the inside and outside built-up welding form that all adopted.Be arranged on the effect that reinforced pipe 10 in shell-side head also has manhole, by reinforced pipe, enter in tube bank end socket, can dismantle and install the bolt of adpting flange ring 11.
As shown in Figure 1, the tube side left side in the present embodiment is the first entrance 18, and the opening of the reinforced pipe 10 on tube side right side is corresponding with the first entrance 18, forms the first outlet; Left side on shell side is provided with the second outlet 19, and the right side on shell side is provided with the second entrance 20;
Tube side medium is entered by the first entrance 18, by gas distributor 17, by bobbin carriage, enter heat exchanger tube 7, pass through again conical head 13 and expansion joint 12, by the outlet reinforced pipe 10 on housing ball sealing head, flowed out, shell side medium is entered by the second entrance 20, gap through all gripper shoes 6 with heat exchanger tube 7, carries out sufficient heat exchange with the tube side medium in heat exchanger tube 7, the last outflow by the second outlet 19; Tube bundle assembly is to be all connected sealing with flange, pad and securing member with housing unit two ends.
The utility model comes compensating pipe shell side due to the temperature difference differential expansions that bring different from linear expansion coefficient by the expansion joint 12 on tube bundle assembly.The set tube side diameter of expansion joint is little, and by pressure reduction design, size is little and compensation rate is large, and cost reduces greatly; The utility model adopts the design of single tube journey in the situation that guaranteeing circulation area, greatly to reduce device diameters; As shown in Figure 1, along tube bank axial segmentation, be provided with gripper shoe 6, in gripper shoe 6, be distributed with rod baffle; As shown in Figure 2, the rod baffle in same gripper shoe 6 is parallel to each other, and rod baffle layering is through tube bank, vertical with tube bank, and the rod baffle of adjacent shore plates 6 is an angle of 90 degrees and distributes, and the gripper shoe in Fig. 2 and the gripper shoe in Fig. 3 are two adjacent gripper shoes; Rod baffle fixedly ring flat-plate 61 is axially uniformly distributed along tube bank, forms the rod baffle of multilayer angular misalignment.
By reference to the accompanying drawings preferred embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.
Do not depart from design of the present utility model and scope and can make many other changes and remodeling.Should be appreciated that the utility model is not limited to specific embodiment, scope of the present utility model is defined by the following claims.

Claims (10)

1. a rod baffle heat exchanger for built-in expansion joint, is characterized in that: comprise bobbin carriage assembly, housing unit, tube bundle assembly and expansion joint assembly;
Described bobbin carriage assembly comprises bobbin carriage end socket (1), bobbin carriage cylindrical shell (2) and channel flange (3); Described tube bundle assembly comprises tube bank, left tube sheet (4) and the right tube sheet (15) at tube bank two ends, and tube bundle assembly also comprises pipe nipple (14), conical head (13); Described expansion joint assembly comprises expansion joint (12) and flange ring (11); Described housing unit comprises shell-side cylinder (8), shell-side head (9) and reinforced pipe (10); Above-mentioned tube bundle assembly is positioned at shell-side cylinder (8) inside, and above-mentioned reinforced pipe (10) extends to shell-side head outside by shell-side head inside;
Above-mentioned shell-side cylinder (8) is provided with shell flange (5) near bobbin carriage one end, and the channel flange (3) of shell flange (5) and above-mentioned bobbin carriage assembly clamps left tube sheet (4); Right tube sheet (15) is floating structure, and it is connected with the large end of conical head (13) by pipe nipple (14); The small end of conical head (13) is connected with expansion joint (12), and the end of expansion joint (12) is flange ring (11), and flange ring (11) is connected with the end part seal of the reinforced pipe (10) of housing unit.
2. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 1, is characterized in that: described bobbin carriage assembly is air inclusion entrance (18) and gas distributor (17) also, and the end of bobbin carriage end socket (1) is provided with the first entrance (18);
The tube bank of described tube bundle assembly is arranged and is formed by a plurality of heat exchanger tubes that are parallel to each other (7), and gripper shoe (6) is by tube bundle support; And/or
Described housing unit also comprises saddle (16); On both sides in shell-side cylinder (8), be respectively arranged with the second entrance (20) and the second outlet (19).
3. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 2, is characterized in that: heat exchanger tube pass adopts single channel, and tube side medium is entered by described the first entrance (18), by reinforced pipe (10), is discharged; Shell side adopts rod baffle structure, and shell side medium is entered by described the second entrance (20), by the second outlet (19), is discharged.
4. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 2, is characterized in that: described shell-side head (9) is ball sealing head, perforate on ball sealing head, and reinforced pipe (10) extends one section to ball sealing head is inner, and is connected with flange ring (11).
5. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 2, is characterized in that: between described expansion joint (12) and reinforced pipe (10), with flange ring (11) and securing member compress gasket, seal, flange is removable, restrains removable.
6. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 5, is characterized in that: described flange ring (11) is inverse flange structure, and the compress gasket of flange ring (11) is arranged on the outside of bolt.
7. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 2, is characterized in that: described gripper shoe (6) is for a plurality of, and it is along the setting of tube bank axial segmentation.
8. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 7, is characterized in that: described gripper shoe (6) includes fixedly ring flat-plate (61) and be distributed in the rod baffle (62) on ring flat-plate (61) of rod baffle.
9. the rod baffle heat exchanger of a kind of built-in expansion joint as claimed in claim 8, it is characterized in that: the rod baffle in described same gripper shoe (6) is parallel to each other, rod baffle layering is through tube bank, vertical with tube bank, and the rod baffle of adjacent shore plates (6) is an angle of 90 degrees and distributes.
10. a kind of rod baffle heat exchanger of built-in expansion joint as claimed in claim 8 or 9, is characterized in that: described ring flat-plate (61) is axially uniformly distributed along tube bank, forms the rod baffle of multilayer angular misalignment.
CN201420260096.0U 2014-05-21 2014-05-21 A kind of rod baffle heat exchanger of built-in expansion joint CN203949534U (en)

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Application Number Priority Date Filing Date Title
CN201420260096.0U CN203949534U (en) 2014-05-21 2014-05-21 A kind of rod baffle heat exchanger of built-in expansion joint

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091634A (en) * 2014-05-21 2015-11-25 航天长征化学工程股份有限公司 Baffle rod type heat exchanger with built-in expansion joint
CN107115827A (en) * 2016-02-25 2017-09-01 亚申科技研发中心(上海)有限公司 A kind of calandria type fixed bed reactor
CN108981427A (en) * 2018-07-09 2018-12-11 中国核动力研究设计院 A kind of tubular heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091634A (en) * 2014-05-21 2015-11-25 航天长征化学工程股份有限公司 Baffle rod type heat exchanger with built-in expansion joint
CN107115827A (en) * 2016-02-25 2017-09-01 亚申科技研发中心(上海)有限公司 A kind of calandria type fixed bed reactor
CN107115827B (en) * 2016-02-25 2020-09-04 亚申科技(浙江)有限公司 Tube array type fixed bed reactor
CN108981427A (en) * 2018-07-09 2018-12-11 中国核动力研究设计院 A kind of tubular heat exchanger

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