CN207741604U - A kind of big temperature difference air-cooled circulating water cooling system - Google Patents

Abstract

The utility model provides big temperature difference air-cooled circulating water cooling system, including Heat Exchangers, air cooler, pressure buffer and the circulating pump being sequentially connected end to end；Heat Exchangers include shell, at least two heat exchange pipe fitting groups and at least two heat-exchanging tube bundles；Shell has shell side inlet and shell-side outlet；Each heat exchange pipe fitting group includes the first connector and the second connector, and the first connector and the second connector are respectively positioned on outside shell and are connect with shell, the first tube sheet is provided in the first connector, the second tube sheet is provided in the second connector；Heat-exchanging tube bundle is identical as the heat exchange quantity of pipe fitting group, and heat-exchanging tube bundle is located in shell side and includes one or more heat exchanger tubes；The both ends of every heat exchanger tube are connect with the first tube sheet and the second tube sheet respectively, to be formed and shell side tube side independent of each other.Water can flow in the closed circuit, and air device is used in combination to be cooled down, and hardly consume water.

Description

A kind of big temperature difference air-cooled circulating water cooling system

Technical field

The utility model is related to technical field of heat exchange, in particular to a kind of big temperature difference air-cooled circulating water system System.

Background technology

Currently, Domestic Petrochemical Enterprises and most power plant cycle water system, one is using open cooling system, on the one hand by The water consumption caused by evaporation loss, air cooling tower windage loss etc. is big；Another aspect cooling system due to being in direct contact with air, A large amount of impurity enters system in air, is polluted caused by the chemical agents such as a large amount of antisludging agent of addition, corrosive agent.Another kind is Closed circuit cooling system, closed circuit cooling system have saved part recirculated water to a certain extent, and can guarantee water quality not It is contaminated, the Effec-tive Function of main equipment is protected well, improves service life.But current closed circuit cooling system is to close Formula cooling tower is that pipe heat exchanger is placed in tower, passes through the hot standby guarantee of the heat exchange of the air of circulation, shower water and recirculated water Cooling-down effect, but the system still consumes recirculated water to a certain extent, and the cooling circulating water entrance temperature difference is smaller, generally 10 DEG C or so, it can not realize big temperature difference cooling effect, and occupation area of equipment is larger.

Utility model content

One of the purpose of this utility model is to provide a kind of big temperature difference air-cooled circulating water cooling system, existing to improve Cooling system consumes the problem of water.

At least one of in order to solve the above-mentioned technical problem, the utility model provides following technical scheme：

A kind of big temperature difference air-cooled circulating water cooling system, including Heat Exchangers, air cooler, pressure buffer and follow Ring pumps, and Heat Exchangers, air cooler, pressure buffer and circulating pump are sequentially connected end to end；

Wherein, the Heat Exchangers include shell, at least two heat exchange pipe fitting groups and at least two heat exchanger tubes Beam；The shell has shell side inlet and shell-side outlet；Each heat exchange pipe fitting group connects including the first connector and second Head, first connector and second connector are respectively positioned on outside the shell and are connect with the shell, in first connector It is provided with the first tube sheet, the second tube sheet is provided in second connector；The heat-exchanging tube bundle and the heat exchange pipe fitting group Quantity is identical, and the heat-exchanging tube bundle is located in the shell side and includes one or more heat exchanger tubes；Every heat exchanger tube Both ends are connect with first tube sheet and second tube sheet respectively, to be formed and shell side tube side independent of each other；It is described Shell side inlet is connect with the outlet of the circulating pump, and the shell-side outlet is connect with the medium inlet of the air cooler.

Further, in the alternative embodiment of the utility model, the Heat Exchangers be wound tube heat exchanger or More distortion heats exchange of heat pipe.

Further, in the alternative embodiment of the utility model, the shell side medium of the Heat Exchangers is desalination Any one of water, distilled water or anti-icing fluid.

Further, in the alternative embodiment of the utility model, the air cooler is plate-fin heat exchanger.

Further, in the alternative embodiment of the utility model, the protrusion is spiral salient, adjacent spiral salient Between be formed with helicla flute.

Further, in the alternative embodiment of the utility model, the both ends limit portion of the heat exchanger tube is pipe.

Further, it in the alternative embodiment of the utility model, is tied up using steel band between the heat-exchanging tube bundle.

Further, in the alternative embodiment of the utility model, the heat exchanger tube includes sequentially connected first bend pipe Section, straight pipe and the second bend loss；First bend loss and second bend loss are managed with corresponding described first respectively Plate is connected with second tube sheet, and the straight pipe is twisted tube.

Further, in the alternative embodiment of the utility model, in first bend loss and second bend loss At least one is pipe.

Further, in the alternative embodiment of the utility model, in the corresponding straight pipe of each heat-exchanging tube bundle Heart line is substantially parallel to one another.

Further, in the alternative embodiment of the utility model, the heat exchanger tube includes straight pipe, and adjacent is described straight Point contact between pipeline section.

Further, in the alternative embodiment of the utility model, first connector has tube-side inlet and close to institute Shell-side outlet is stated, there is second connector tube side to export and close to the shell side inlet, the shell side inlet and the shell side The line of outlet and the center line of the straight pipe are substantially parallel to one another, so that tube side can form countercurrent flow with shell side.

Further, in the alternative embodiment of the utility model, the shell includes pipe and is connected to pipe two The first seal and second seal at end, first connector and the shell-side outlet are set to the first seal, institute It states the second connector and the shell side inlet is set to the second seal；Belong to described the first of a heat exchange pipe fitting group The central angle of connector and second connector is zero.

Further, in the alternative embodiment of the utility model, the shell includes cylinder and is connected to the circle The first seal and second seal at cylinder both ends；The shell-side outlet is set to the first seal or the cylinder, The shell side inlet is set to the second seal or the cylinder, in first connector and second connector extremely Few one is set to the cylinder either first seal or the second seal.

Further, in the alternative embodiment of the utility model, the first seal and the second seal are equal For end socket, either the first seal and the second seal are flat cover or the first seal and described It is flat cover that one, which is end socket another one, in two sealing elements.

Further, in the alternative embodiment of the utility model, the shell includes the first sealing for being set to both ends Part and second seal, partition board is provided in the shell, and the partition board connects with the first seal or second seal It connects, the inner cavity of the shell is separated into U-shaped cavity by the partition board, and the shell side inlet and the shell-side outlet are arranged in the side Wall and the both sides for being located at partition board, first connector and second connector difference of the same heat exchange pipe fitting group Positioned at the both sides of the partition board, the heat-exchanging tube bundle is U-shaped and is set in the U-shaped cavity.

The beneficial effects of the utility model include：The utility model is recycled by the big temperature difference air-cooled that above-mentioned design obtains Water cooling system, in use, flowing through the tube side fluid of Heat Exchangers and the shell side cycle water coke slurry heat of Heat Exchangers Amount flows through the cooling water of Heat Exchangers and efficient plate-fin air cooler air exchange heat；The big temperature difference of the utility model Air-cooled circulating water cooling system improves cooling capacity, and the loss without any water in operational process, has reached water-saving Purpose.Further, it is less scaling at relatively high temperatures when recirculated water is using desalted water, distilled water or anti-icing fluid.Further Ground, using Heat Exchangers, various working fluid realizes cooling air cooler, when using plate-fin air cooler, realizes the big temperature difference Cooling effect.

Description of the drawings

It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not The restriction to range is should be considered as, for those of ordinary skill in the art, without creative efforts, It can also be obtained according to these attached drawings other relevant attached drawings.

Fig. 1 is the schematic diagram for the big temperature difference air-cooled circulating water cooling system that the utility model embodiment 1 provides.

Fig. 2 is the schematic diagram under the first visual angle of the Heat Exchangers in Fig. 1；

Fig. 3 is the schematic diagram under the second visual angle of the Heat Exchangers in Fig. 1；

Fig. 4 is diagrammatic cross-section when three straight pipes are fixed together；

Fig. 5 is the schematic diagram under the second visual angle of the Heat Exchangers that the utility model embodiment 2 provides；

Fig. 6 is the schematic diagram for the Heat Exchangers that the utility model embodiment 3 provides；

Fig. 7 is the schematic diagram for the Heat Exchangers that the utility model embodiment 4 provides；

Fig. 8 is the schematic diagram for the Heat Exchangers that the utility model embodiment 5 provides；

Fig. 9 is the schematic diagram for the Heat Exchangers that the utility model embodiment 6 provides；

Figure 10 is the schematic diagram for the Heat Exchangers that the utility model embodiment 7 provides；

Figure 11 is the schematic diagram for the Heat Exchangers that the utility model embodiment 8 provides.

Icon：100,100a, 100b, 100c, 100d, 100e, 100f, 100g- Heat Exchangers；110- shells； 111- shell side inlets；112- shell-side outlets；113- cylinders；114- upper covers；115- low heads；The first connectors of 120-；121- One tube sheet；122- flanges；The second connectors of 130-；The second tube sheets of 131-；140- heat-exchanging tube bundles；141- heat exchanger tubes；141a- first is curved Pipeline section；141b- straight pipes；The second bend loss of 141c-；150- partition boards；160- first seals；170- flat covers；200- air coolers； 300- pressure buffers；400- circulating pumps.

Specific implementation mode

To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with this practicality The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on this practicality Embodiment in novel, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.Therefore, the implementation to the utility model provided in the accompanying drawings below The detailed description of mode is not intended to limit claimed the scope of the utility model, but is merely representative of the utility model Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor The every other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", "upper", "lower", "front", "rear", "left", "right", "inner", "outside", etc. instructions orientation or positional relationship be based on shown in attached drawing Orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated Equipment or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as new to this practicality The limitation of type.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be It is connected directly, can also can be indirectly connected through an intermediary the mutual of connection inside two elements or two elements Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is new in this practicality as the case may be Concrete meaning in type.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features are in direct contact, and can also not be to be in direct contact but lead to including the first and second features Cross the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the One feature is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special Sign second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only Indicate that fisrt feature level height is less than second feature.

Embodiment 1, shown in Fig. 4,

As shown in Figure 1, a kind of big temperature difference air-cooled circulating water cooling system of the present embodiment, including Heat Exchangers 100, air cooler 200, pressure buffer 300 and circulating pump 400.Heat Exchangers 100, air cooler 200, pressure buffer 300 and circulating pump 400 be sequentially connected end to end.

Wherein, Heat Exchangers 100, including the heat exchange pipe fitting group of shell 110, at least two and at least two heat exchanger tubes Beam 140.

Shell 110 has shell side inlet 111 and shell-side outlet 112.Shell side inlet 111 is connect with the outlet of circulating pump 400, Shell-side outlet 112 is connect with the medium inlet of air cooler 200.The medium of the media outlet and pressure buffer 300 of air cooler 200 Entrance connects, and the media outlet of pressure buffer 300 is connect with the entrance of circulating pump 400, forms a closed circuit.And then it is more The shell side medium of stream heat exchanger 100 can the fluid interchange in closed environment.Pressure buffer 300 is for accommodating and compensating The breathing amount of medium in system, the pressure oscillation being also used in buffer system keep system work more stable.Pressure buffer 300 Expansion tank or closed pond etc. may be used.

Flow through the tube side fluid of Heat Exchangers 100 and the shell side cycle water coke slurry heat of Heat Exchangers 100.Stream Cooling water through Heat Exchangers 100 and the air exchange heat for flowing through air cooler 200.Damage without any water in operational process Consumption, has achieved the purpose that water-saving.

Further, in the alternative embodiment of the utility model, the shell side medium of the Heat Exchangers 100 is de- Any one of brine, distilled water or anti-icing fluid.It can be less scaling at relatively high temperatures.

Further, in the alternative embodiment of the utility model, the air cooler is plate-fin heat exchanger.Plate-fin changes Hot device can further increase cooling capacity.

The temperature difference that recirculated water entrance generates 20 DEG C may be implemented, for example, entering Heat Exchangers from circulating pump 400 100 recirculated water is 30~40 DEG C, and after exchanging heat with 100 tube side fluid of Heat Exchangers, shell-side outlet temperature is 50~90 DEG C, Heat transfer temperature difference is more than or equal to 20 DEG C, and shell-side outlet fluid enters plate-fin air cooler and air heat-exchange, and recirculated water enters after heat exchange Pressure buffer 300, recirculated water are again introduced into Heat Exchangers 100 by circulating pump.

Further, shell 110 includes cylinder 113 and the first seal and cylinder 113 for being connected to 113 upper end of cylinder The second seal of lower end.In the present embodiment, first seal is upper cover 114, and second seal is low head 115.Shell side Upper cover 114 and low head 115 can be respectively set in entrance 111 and shell-side outlet 112, and one of which can also be made to be arranged in circle Cylinder 113, be arranged in upper cover 114 and low head 115 one of another one, can also both be arranged at cylinder 113.Scheming In embodiment shown in 1, the setting of shell side inlet 111 is arranged in low head 115, shell-side outlet 112 in upper cover 114.Shell side stream Body flows to shell-side outlet 112 from shell side inlet 111, and flow direction is substantially from the bottom up.

The quantity for the pipe fitting group that exchanges heat can be two, and to be carried out at the same time heat exchange between three kinds of fluids of realization, (one walks shell Journey, two strands are walked tube side).The quantity for the pipe fitting group that exchanges heat can also be three or more, be exchanged heat between more kinds of fluids with realizing. In existing industrial technology, most heat exchanger can only exchange heat to two kinds of fluids, and multiple equipment generation in commercial plant Waste heat needs more heat exchangers, and floor space is relatively large, and heat transfer effect is poor.

Further, each heat exchange pipe fitting group includes the first connector 120 and the second connector 130.First connector, 120 He It is outer and connect with shell 110 that second connector 130 is respectively positioned on shell 110, is provided with the first tube sheet 121 in the first connector 120, and second The second tube sheet 131 is provided in connector 130.

Further, it is attached for convenience with other pipelines, it can be respectively in the first connector 120 and the second connector Flange 122 is set on 130.Likewise, flange 122 can also be arranged in shell side inlet 111 and shell-side outlet 112.

Further, in the present embodiment, the first tube sheet 121 is connected with the inner wall sealing of corresponding first connector 120, the The corresponding tow sides of one tube sheet 121 are tube side fluid inlet and shell side respectively；Second tube sheet 131 and corresponding second connector 130 inner wall sealing connection；The corresponding tow sides of second tube sheet 131 are tube side fluid outlet and shell side respectively.

First connector 120 and the second connector 130 can be respectively arranged at upper cover 114 and low head 115, can also make it Middle one is arranged in cylinder 113, be arranged in upper cover 114 and low head 115 one of another one, can also both be respectively provided with In cylinder 113.First connector 120 and the second connector 130 can also be arranged at upper cover 114, or be arranged at lower envelope First 115.In the embodiment shown in fig. 1, the first connector 120 is set to upper cover 114,130 low head 115 of the second connector.

Further, the central angle of the first connector 120 and the second connector 130 that belong to heat exchange pipe fitting group can be with It is 0-180 °.Preferably, the first connector 120 and the central angle of the second connector 130 for belonging to heat exchange pipe fitting group are zero； That is the first connector 120 and the second connector 130 are located at the same side of tube body, are then the first connector 120 and by taking Fig. 1 and Fig. 2 as an example Two connectors 130 are respectively positioned on left side or are respectively positioned on right side.

Heat-exchanging tube bundle 140 is identical as the heat exchange quantity of pipe fitting group, and in other words the quantity of heat-exchanging tube bundle 140 is also at least Two.

Heat-exchanging tube bundle 140 is located in shell side and includes one or more heat exchanger tubes 141.Such as in Fig. 1, the heat exchange in left side Tube bank 140 includes two heat exchanger tubes 141, and the heat-exchanging tube bundle 140 on right side includes a heat exchanger tube 141.Only make to show in figure It anticipates, in the other embodiment of the utility model, can also there is other set-up modes.

The both ends of every heat exchanger tube 141 are connect with the first tube sheet 121 and the second tube sheet 131 respectively, with formed with shell side that This independent tube side.A usual heat-exchanging tube bundle 140 corresponds to a kind of fluid.It is provided on shell 110 and the first connector 120 and The essentially identical through-hole of the internal diameters of two connectors 130, so that heat-exchanging tube bundle 140 can pass through shell 110 and connect with corresponding tube sheet It connects.There are gap between heat-exchanging tube bundle 140 and shell 110, it arrives fixed function to the tube sheet that is arranged in connector exchange heat pipe bundle, And shell 110 is not directly connected to heat-exchanging tube bundle 140.Certainly, heat-exchanging tube bundle 140 can also be contacted with shell 110.In other realities It applies in example, the through-hole on shell 110 can also be slightly less than the internal diameter of the first connector 120 and the second connector 130.

When heat-exchanging tube bundle 140 includes more heat exchanger tubes 141, the tube side part in shell side is separated from each other, still Belong to the fluid in more heat exchanger tubes 141 of the same heat-exchanging tube bundle 140 can from tube sheet come together in the second connector 130, on the other hand, it is scattered in each heat exchanger tube 141 from the fluid that the first connector 120 flows into from tube sheet punishment.

In the present invention, it is only necessary to which the smaller tube sheet of size is set in connector, without being set in tube side (shell 110) Setting larger tube sheet, fixed strip, either baffle plate and exchange heat pipe bundle 140 are positioned or are fixed.On the one hand it saves On the other hand the materials of tube sheet are that of avoiding tube sheet and the flowing for influencing shell-side fluid are arranged in shell side.Compared to tradition with folding The heat exchanger of flowing plate, flow resistance are smaller.

Further, in the alternative embodiment of the utility model, the outer wall of heat exchanger tube 141 has protrusion, heat-exchanging tube bundle It is fixed by the way of tying up between 140.For example, tying up heat-exchanging tube bundle 140 using strapping.The outer wall of heat exchanger tube 141 has Protrusion, even if there is also gaps, shell side medium can pass through the gap, have little influence on and change after tying up, between heat exchanger tube 141 Between the contact area of heat pipe and shell side medium, especially heat exchanger tube 141 when point contact, heat exchanger tube 141 connects with shell side medium Contacting surface is identical when accumulating almost with unbundling；Protrusion is spiral salient, and helicla flute is formed between adjacent spiral salient.

Further, in the alternative embodiment of the utility model, heat exchanger tube 141 includes sequentially connected first bend loss 141a, straight pipe 141b and the second bend loss 141c；First bend loss 141a and the second bend loss 141c respectively with it is corresponding First tube sheet 121 and the connection of the second tube sheet 131, straight pipe 141b are twisted tube.The outer wall of twisted tube has above-mentioned spiral salient And helicla flute.

Such as in Fig. 1, partial cutaway has been carried out to shell 110, has illustrated the general configuration of twisted tube, and the torsion at other positions Curved tube and the first bend loss 141a and the second bend loss 141c illustrate position and the trend of its center line using dotted line.In Fig. 1 Shown in Heat Exchangers 100, the fluid flow direction of tube side is generally from top to bottom.

Further, twisted tube has oval cross section, 140 torsion resistance of heat-exchanging tube bundle identical.Twisted tube can be by following Mode is process：Pipe is first squeezed into ellipse, and carries out linear motion in an axial direction and the rotary motion around axis.

When fluid flows through inside twisted tube, fluid is revolved under being acted on by spiral flow channel when entering twisted tube Turn.It when fluid flows through shell side, is influenced by the outer surfaces straight pipe 141b, changes flow velocity and flow direction, strengthen fluid Longitudinal mixing.

When heat exchanger tube 141 is using twisted tube, flow resistance is smaller, and shell-side fluid forms helical duct outside with twisted tube pipe Periodic disturbance is done along tube bank longitudinal direction, makes shell-side fluid while along twisted tube pipe outer wall reverse flow, produces rotation and disturb It is dynamic.Improve the turbulent extent of fluid, thus less fouling of heat exchangers.

Further, in the alternative embodiment of the utility model, each heat-exchanging tube bundle 140 is consolidated by the way of tying up It is fixed.

Further, in the alternative embodiment of the utility model, using the side tied up between different heat-exchanging tube bundles 140 Formula is fixed.

Further, heat-exchanging tube bundle 140 is tied up using band, further, heat-exchanging tube bundle can be tied up with steel band 140.This fixed form is not only simple and reliable, but also smaller to the fluid flow effect in shell side.

Further, in the alternative embodiment of the utility model, in the first bend loss 141a and the second bend loss 141c At least one is pipe.

The anti-pressure ability of pipe is more preferable.First bend loss 141a and the second bend loss 141c is pipe.First bend loss 141a and the second bend loss 141c can also only be pipe (at tube sheet) in limit position.

Further, in the alternative embodiment of the utility model, 140 corresponding straight pipe 141b's of each heat-exchanging tube bundle Center line is substantially parallel to one another.

Further, in the alternative embodiment of the utility model, the first connector 120 has tube-side inlet and close to shell side There is tube side to export and close to shell side inlet 111, the company of shell side inlet 111 and shell-side outlet 112 for outlet 112, the second connector 130 The center line of line and straight pipe 141b is substantially parallel to one another, so that tube side can form countercurrent flow with shell side.

Further, in the alternative embodiment of the utility model, point contact between adjacent straight pipe 141b.

Such as shown in Fig. 3, the point contact at the long axis in the section of adjacent straight pipe 141b mutually supports, it is not necessary to use folding Flowing plate support, keep arrangements of the straight pipe 141b in heat exchanger shell 110 compact, reduce the size of heat exchanger, be not in because Flow dead zone caused by baffle plate, while the induced vibration of heat exchanger tube 141 can be overcome again.

Meanwhile fluid forms the wake flow for being detached from tube wall after the helix contact point of adjacent twisted tube, increases fluid certainly The turbulivity of body destroys heat transfer boundary layer of the fluid on tube wall, to augmentation of heat transfer.

Embodiment 2 referring to Figure 5,

The technique effect of the Heat Exchangers 100a that the utility model embodiment is provided, realization principle and generation and Embodiment 1 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

The Heat Exchangers 100a of the present embodiment includes 110, four heat exchange pipe fitting groups of shell and four heat-exchanging tube bundles 140.Corresponding four the first connectors 120 of four heat exchange pipe fitting groups are arranged at upper cover 114.Four 120 edges of the first connector It is circumferentially uniformly distributed, the central angle of four the first connectors 120 is 90 °.And in the present embodiment, four heat exchange pipe fitting groups In, the central angle of the first connector 120 and the second connector 130 corresponding to each group is zero.

In other embodiments, it is possibility to have other embodiment.For example, week of four the first connectors 120 in shell 110 It can not also be uniformly distributed upwards, uneven distribution includes that the central angle of four the first connectors 120 is different, also includes part Same section differs.Similarly, can be every group of the first connector 120 and the second connector 130 in four heat exchange pipe fitting groups Central angle is not zero, and can also be that part is not zero for null part, can also be partly a certain angle, another part is another Angle.

Embodiment 3 with reference to shown in Fig. 6,

The technique effect of the Heat Exchangers 100b that the utility model embodiment is provided, realization principle and generation and Embodiment 1 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

Heat Exchangers 100b provided in this embodiment includes 110, three heat exchange pipe fitting groups of shell and three heat exchange Tube bank 140.The heat-exchanging tube bundle 140 being distributed substantially along the longitudinal there are two wherein is identical with embodiment 1, only in embodiment 1 On the basis of increase a set of heat-exchanging tube bundle 140 being transversely distributed and corresponding heat exchange pipe fitting group.Wherein, cross direction profiles are changed Heat pipe bundle 140 includes three heat exchanger tubes, and this three heat exchanger tubes are straight tubes, and end is pipe, and centre is twisted tube.

In this embodiment, newly-increased 140 corresponding tube side fluid of heat-exchanging tube bundle can flow into simultaneously from 110 side of the shell It is flowed out from the opposite other side, countercurrent flow is formed with the fluid of shell side；To adapt to different operating mode fluid heat transfer conditions.Further Ground, in order to avoid the heat-exchanging tube bundle being distributed along longitudinal direction 140, the newly-increased heat-exchanging tube bundle 140 being transversely distributed is at least close to edge It can deviate the centrally disposed of cylinder at the heat-exchanging tube bundle 140 of genesis analysis.Such as the heat-exchanging tube bundle 140 being transversely distributed is arranged At curved shape；Or make the heat-exchanging tube bundle being transversely distributed 140 without the diametric(al) of cylinder, to keep transversely being distributed Heat-exchanging tube bundle 140 be straight tube-like；Also or the heat-exchanging tube bundle 140 of genesis analysis is made not to be arranged along the center line of cylinder, to keep away Open the heat-exchanging tube bundle 140 being transversely distributed.

Embodiment 4 with reference to shown in Fig. 7,

The technique effect of the Heat Exchangers 100c that the utility model embodiment is provided, realization principle and generation and Embodiment 1 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

Heat Exchangers 100c provided in this embodiment includes 110, two heat exchange pipe fitting groups of shell and two heat exchange Tube bank 140.

Shell includes cylinder 113 and is connected to the low head of the upper cover 114 and cylinder lower end of 113 upper end of cylinder；Shell Journey outlet 112 is set to upper cover 114, and shell side inlet 111 is set to low head 115, the first connector 120 and the second connector 130 It is set to cylinder 113.

Along shell side media flow direction, the temperature of shell side medium can have gradient.Using shell side medium as cryogenic media, tube side Medium is for high-temperature medium, the medium temperature at shell side inlet 111 is minimum, is gradually risen along shell side media flow direction It is high.Two heat exchange pipe fitting groups are equivalent to and arrange successively along shell side media flow direction, and this setup is suitable for temperature The different tube side media for heat exchange of demand.In addition, only being shown in the present embodiment, there are two heat exchange pipe fitting groups (two groups of tube sides) Situation, those skilled in the art are it is to be understood that the quantity of heat exchange pipe fitting group can also increase to 3 or more.

Embodiment 5 with reference to shown in Fig. 8,

The technique effect of the Heat Exchangers 100d that the utility model embodiment is provided, realization principle and generation and Embodiment 1 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

Heat Exchangers 100d provided in this embodiment includes 110, three heat exchange pipe fitting groups of shell and three heat exchange Tube bank 140.

Shell 110 includes first seal 160 and second seal (not marking).It further include multiple and first seal The side wall of 160 connections, the first connector 120 and the second connector 130 are mounted on the outside of first seal 160.Setting in shell There are partition board 150, partition board 150 to be connect with first seal 160 and side wall, the inner cavity of shell 110 is separated into U-shaped cavity by partition board.

Shell side inlet 111 and shell-side outlet 112 are arranged in side wall and are located at the both sides of partition board 150；The same heat exchange The first connector 120 and the second connector 130 of pipe fitting group are located at the both sides of partition board 150, and heat-exchanging tube bundle 140 is U-shaped and sets It is placed in U-shaped cavity, the arrival end of heat-exchanging tube bundle 140 and outlet end are located at the both sides of partition board.

The tube side connector and shell side connector of this Heat Exchangers 100d substantially all close to this one end of first seal, Pipeline is facilitated to compare the installation environment of concentration.Moreover, this Heat Exchangers 100d is under the premise of same volume, shell side stream Road and tube side runner are all longer, and heat exchange is more abundant.

Embodiment 6 with reference to shown in Fig. 9,

The technique effect of the Heat Exchangers 100e that the utility model embodiment is provided, realization principle and generation and Embodiment 1 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

Heat Exchangers 100e provided in this embodiment includes 110, two heat exchange pipe fitting groups of shell and two heat exchange Tube bank 140.

In the present embodiment, with two flat covers 170 instead of upper low head.Shell includes cylinder 113 and is connected to Two flat covers 170 of 113 upper and lower ends of cylinder；Shell-side outlet 112 and two the first connectors 120 are set to the flat cover of top 170, shell side inlet 111 and two the second connectors 130 are set to the flat cover 170 of lower section.Flat cover is generally used for low-pressure fluid, and End socket is generally used for high pressure fluid.So flat cover and end socket can be selected according to specific Fluid pressure.

Embodiment 7 is referring to Fig.1 shown in 0,

The technique effect of the Heat Exchangers 100f that the utility model embodiment is provided, realization principle and generation and Embodiment 2 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

Heat Exchangers 100f provided in this embodiment includes 110, three heat exchange pipe fitting groups of shell and three heat exchange Tube bank 140.

Shell 110 includes cylinder 113 and is connected to the lower envelope of 113 lower end of upper cover 114 and cylinder of 113 upper end of cylinder First 115.Shell-side outlet 112 is set to upper cover 114, and shell side inlet 111 is set to low head 115.

In these three heat exchange pipe fitting groups, there are one heat exchange pipe fitting group (the heat exchange pipe fitting groups for being located at right side in Fig. 9) The first connector 120 be set to upper cover 114, and the second connector 130 is set to low head 115.

Two heat exchange pipe fitting groups of residue in these three heat exchange pipe fitting groups (are located at two heat exchanger tubes in left side in Fig. 9 Connector group), 120 upper cover 114 of the first connector of one of them, another is set to low head 115, their the second connector 130 are arranged at cylinder 113.

Along shell side media flow direction, the temperature of shell side medium can have gradient.Using shell side medium as cryogenic media, tube side Medium is for high-temperature medium, the medium temperature at shell side inlet 111 is minimum, is gradually risen along shell side media flow direction It is high.

Compared with Example 4, two heat exchanger tube linker components of embodiment 4 Wei Yu not be in two temperature ranges.And this reality It applies in example, there are two heat exchanger tube linker components not to be located at a temperature range, and another pipe fitting group that exchanges heat is across two temperature Spend section.For example, two, left side heat exchanger tube linker component not Wei Yu 30-50 DEG C and 50-80 DEG C of two temperature ranges, one, right side Heat exchange pipe fitting group is located at 30-80 DEG C of temperature range, and the heat exchange pipe fitting group on right side is across two temperature ranges.Art technology Personnel's pipe fitting group it is to be understood that the heat exchange pipe fitting group on right side can also exchange heat across 3 and temperatures above section, left side Quantity can also increase to 3 or more.Further, in the alternative embodiment of the utility model, shell side includes being situated between along shell side Mass flow moves multiple temperature ranges of directional spreding, and Heat Exchangers had both included the heat exchange pipe fitting positioned at a temperature range Group, and include the heat exchange pipe fitting group for being at least while located at two temperature ranges.

Further, compared with Example 4, the layout of heat-exchanging tube bundle 140 of the present embodiment is more reasonable, flat with tube side center line The length of capable straight pipe is more than bend loss, to increase the countercurrent flow of tube side and shell side.Further, the utility model can It selects in embodiment, is more than bend loss with the length of the straight pipe of tube side centerline parallel.

Embodiment 8 is referring to Fig.1 shown in 1,

The technique effect of the Heat Exchangers 100g that the utility model embodiment is provided, realization principle and generation and Embodiment 1 is identical, and to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in embodiment 1.

Heat Exchangers 100c provided in this embodiment includes 110, three heat exchange pipe fitting groups of shell and three heat exchange Tube bank 140.

Shell 110 includes cylinder 113 and is connected to the lower envelope of 113 lower end of upper cover 114 and cylinder of 113 upper end of cylinder First 115.Shell-side outlet 112 is set to upper cover 114, and shell side inlet 111 is set to low head 115.

Wherein, Heat Exchangers 100g is wound tube heat exchanger, and the heat exchanger tube of heat-exchanging tube bundle 140 is mutually wound.

Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model Within then, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of big temperature difference air-cooled circulating water cooling system, which is characterized in that including Heat Exchangers, air cooler, pressure Buffer and circulating pump, Heat Exchangers, air cooler, pressure buffer and circulating pump are sequentially connected end to end；

Wherein, the Heat Exchangers include shell, at least two heat exchange pipe fitting groups and at least two heat-exchanging tube bundles；Institute Stating shell has shell side inlet and shell-side outlet；Each heat exchange pipe fitting group includes the first connector and the second connector, institute It states the first connector and second connector is respectively positioned on outside the shell and is connect with the shell, be provided in first connector First tube sheet is provided with the second tube sheet in second connector；The quantity phase of the heat-exchanging tube bundle and the heat exchange pipe fitting group Together, the heat-exchanging tube bundle is located in the shell side and includes one or more heat exchanger tubes；The both ends of the every heat exchanger tube point It is not connect with first tube sheet and second tube sheet, to be formed and shell side tube side independent of each other；The shell side enters Mouth is connect with the outlet of the circulating pump, and the shell-side outlet is connect with the medium inlet of the air cooler.

2. big temperature difference air-cooled circulating water cooling system according to claim 1, which is characterized in that the multiple flow heat exchange Device is wound tube heat exchanger or distorts heat exchange of heat pipe more.

3. big temperature difference air-cooled circulating water cooling system according to claim 1 or 2, which is characterized in that the air cooler For plate-fin heat exchanger.

4. big temperature difference air-cooled circulating water cooling system according to claim 1 or 2, which is characterized in that the heat exchanger tube Including straight pipe, the center line of the corresponding straight pipe of each heat-exchanging tube bundle is substantially parallel to one another.

5. big temperature difference air-cooled circulating water cooling system according to claim 4, which is characterized in that the adjacent straight tube Point contact between section.

6. big temperature difference air-cooled circulating water cooling system according to claim 4, which is characterized in that the first connector tool There is tube-side inlet and close to the shell-side outlet, second connector has tube side outlet and close to the shell side inlet, described The center line of shell side inlet and the line and the straight pipe of the shell-side outlet is substantially parallel to one another, so that tube side and shell side energy Enough form countercurrent flow.

7. big temperature difference air-cooled circulating water cooling system according to claim 1, which is characterized in that the shell includes circle Cylinder and the first seal and second seal for being connected to the cylinder both ends, first connector and the shell-side outlet are set It is placed in the first seal, second connector and the shell side inlet are set to the second seal；Belong to one First connector for the pipe fitting group that exchanges heat and the central angle of second connector are zero.

8. big temperature difference air-cooled circulating water cooling system according to claim 1, which is characterized in that the shell includes circle Cylinder and the first seal and second seal for being connected to the cylinder both ends；It is close that the shell-side outlet is set to described first Either the cylinder shell side inlet is set to the second seal or the cylinder to sealing, first connector and At least one of described second connector is set to the cylinder or the first seal or the second seal.

9. big temperature difference air-cooled circulating water cooling system according to claim 7 or 8, which is characterized in that described first is close Sealing and the second seal be end socket either the first seal and the second seal be flat cover or It is flat cover that one, which is end socket another one, in the first seal and the second seal.

10. big temperature difference air-cooled circulating water cooling system according to claim 1, which is characterized in that the shell includes It is set to the first seal and second seal at both ends, is provided with partition board in the shell, the partition board and described first close The inner cavity of the shell is separated into U-shaped cavity by sealing or second seal connection, the partition board, the shell side inlet and described Shell-side outlet is arranged the side wall in the shell and is located at the both sides of partition board, same the described of pipe fitting group that exchange heat First connector and second connector are located at the both sides of the partition board, and the heat-exchanging tube bundle is U-shaped and is set to described U-shaped Intracavitary.