CN203964695U - Middle discharge opeing formula condensing unit - Google Patents

Middle discharge opeing formula condensing unit Download PDF

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Publication number
CN203964695U
CN203964695U CN201420424084.7U CN201420424084U CN203964695U CN 203964695 U CN203964695 U CN 203964695U CN 201420424084 U CN201420424084 U CN 201420424084U CN 203964695 U CN203964695 U CN 203964695U
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CN
China
Prior art keywords
heat exchanger
prime
rear class
collector
discharge opeing
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Application number
CN201420424084.7U
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Chinese (zh)
Inventor
李永堂
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YANTAI JIAQUN EFFICIENT ENERGY SAVING EQUIPMENT Co Ltd
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YANTAI JIAQUN EFFICIENT ENERGY SAVING EQUIPMENT Co Ltd
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Priority to CN201420424084.7U priority Critical patent/CN203964695U/en
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Abstract

The utility model is a kind of middle discharge opeing formula condensing unit, the prime heat exchanger being provided with in casing and rear class heat exchanger, and the heat exchanger tube front end of prime heat exchanger is connected with prime upstream end collector, and rear end is connected with prime exit collector; The heat exchanger tube front end of rear class heat exchanger is connected with rear class upstream end collector, and rear end is connected with rear class exit collector; Prime exit collector is connected with rear class upstream end collector by pipeline.Implement middle discharge opeing at prime heat exchanger end, and in the gas introducing rear class heat exchanger that prime heat exchanger is discharged, be conducive to flowing of heat exchanging pipe inner fluid, and accelerated the discharge of liquid film in heat exchanging pipe.Thereby make the coefficient of heat transfer significantly increase.Owing to having increased the steam flow velocity of suitable liquid film flow direction, can make liquid film turbulization, also can make on the other hand liquid film by the wall that blows off, thereby the coefficient of heat transfer is increased.

Description

Middle discharge opeing formula condensing unit
Technical field
The utility model relates to a kind of condensing unit, and being mainly used in gas or steam condensing is liquid.
Technical background
Condensation condensation heat transfer including steam condensing mainly contains two kinds of forms: one is film condensation; Another kind is pearl (dripping shape) condensation.Pearl condensation, its surface coefficient of heat transfer is than large several times even large one orders of magnitude of film condensation.The condensation of steam in horizontal tube (or tube sheet), belongs to film condensation substantially.When film condensation, wall is always covered with by one deck liquid film, condenses to emit the heat of transformation (latent heat) and must just can pass on cooling wall through liquid film.Therefore, the main feature of film condensation, the thermal resistance that is exactly condensation heat transfer process almost all concentrates in condensate film.For film condensation, want to improve its coefficient of heat transfer, just necessary reducer film thickness, or turbulization film condensation heat transfer, the transmission of heat like this, except the laminar sublayer as thin as a wafer near wall still relies on heat-conducting mode, beyond laminar sublayer, taking turbulent flow transmission as main, heat exchange efficiency is significantly increased.
Existing condenser is unresolved above-mentioned technical problem all, owing to generally can forming gas-liquid mixed phase in its outlet end collector, not only gas phase refluxes and hinders flowing of heat exchanging pipe inner fluid, and is unfavorable for reducer film thickness, therefore heat exchange efficiency is lower, and condensation effect can not be satisfactory.
Utility model content
Technical problem to be solved in the utility model is that the middle discharge opeing formula condensing unit that a kind of coefficient of heat transfer and condensation efficiency are higher is provided.
For achieving the above object, the utility model has adopted following technical scheme.
Middle discharge opeing formula condensing unit, comprise that lower end is provided with the casing of axial flow blower with air inlet, upper end, it is characterized in that: the prime heat exchanger being provided with in casing and rear class heat exchanger, the heat exchanger tube front end of prime heat exchanger is connected with prime upstream end collector, and rear end is connected with prime exit collector; The heat exchanger tube front end of rear class heat exchanger is connected with rear class upstream end collector, and rear end is connected with rear class exit collector; Prime exit collector is connected with rear class upstream end collector by pipeline, introduces rear class heat exchanger for the gas that prime heat exchanger is discharged; Discharging tube in the middle of prime exit collector is also connected with.
Also comprise the water leg that is positioned at casing below, connect the water pump of water leg and be arranged on the shower of heat exchanger top in casing; Filler between axial flow blower and shower is also installed in casing.
Prime heat exchanger and rear class heat exchanger take the mode of being arranged above and below to arrange.
Prime exit collector and rear class exit collector are connected with respectively fluid-tight.Or, also comprise auxiliary condenser; The exit collector of afterbody heat exchanger is connected with reservoir; Reservoir is connected with described auxiliary condenser by escape pipe.
The utlity model has following characteristics.
The utility model has been implemented middle discharge opeing at prime heat exchanger end, and prime exit collector is connected with rear class upstream end collector by pipeline, the gas that prime heat exchanger is discharged is introduced in rear class heat exchanger, be conducive to flowing of heat exchanging pipe inner fluid, and accelerated the discharge of liquid film in heat exchanging pipe.Accelerate the discharge of liquid film, be equivalent to reducer film thickness even liquid film taken away wall, locally produce similar dropwise condensation effect, thereby make the coefficient of heat transfer significantly increase.Owing to having increased the steam flow velocity of suitable liquid film flow direction, can make liquid film turbulization, also can make on the other hand liquid film by the wall that blows off, thereby the coefficient of heat transfer is increased.
Middle discharge opeing can effectively improve the utilization rate of heat exchanger heat-transfer surface, and therefore structure of the present utility model can ensure that prime heat exchanger is all the time in high efficient heat exchanging state.
Brief description of the drawings
Fig. 1 is structure of the present utility model and operation principle schematic diagram.
Detailed description of the invention
Further illustrate the utility model below in conjunction with the drawings and specific embodiments.
Embodiment mono-
The present embodiment is a kind of air cooled condenser.
As shown in Figure 1, embodiment of the present utility model comprises that lower end is provided with the casing 1 of axial flow blower 15 with air inlet 7, upper end.Prime heat exchanger 3 and rear class heat exchanger 2 are installed in casing 1, and the heat exchanger tube front end of prime heat exchanger 3 is connected with prime upstream end collector 10, and rear end is connected with prime exit collector 9.The heat exchanger tube front end of rear class heat exchanger 2 is connected with rear class upstream end collector 12, and rear end is connected with rear class exit collector 11.Prime exit collector 9 is connected with rear class upstream end collector 12 by pipeline, introduces rear class heat exchanger 2 for the gas that prime heat exchanger 3 is discharged.
The middle discharging tube that prime exit collector 9 connects can be connected reservoir by fluid-tight 8 respectively with the rear class exit collector 11 including the exit collector of afterbody heat exchanger.
The exit collector 11 of afterbody heat exchanger also can directly connect reservoir, now, auxiliary condenser need be set, and reservoir is provided with the escape pipe and the liquid back pipe that are connected with auxiliary condenser respectively.Gas in reservoir is back to reservoir after auxiliary condenser condensation liquefaction.Reservoir also can only be provided with the escape pipe being connected with auxiliary condenser, and the gas in reservoir flows to other reservoir after auxiliary condenser condensation liquefaction.And other heat exchanger exit collector outside afterbody heat exchanger is generally connected with reservoir by fluid-tight 8.
Under axial flow blower 15 effects, cold wind enters in casing 1 and flow through prime heat exchanger 3 and rear class heat exchanger 2 from air inlet 7, carries out discharging from casing 1 upper end after heat exchange with heat exchanger tube inner fluid.
Embodiment bis-
The present embodiment is a kind of evaporative condenser.
Still, as Fig. 1, on the basis of embodiment mono-, the present embodiment also comprises the water leg 6 that is positioned at casing 1 below, connects the water pump 5 of water leg 6 and is arranged on the shower 13 of the interior heat exchanger of casing 1 top, and wherein water pump 5 is connected with shower 13 by upper hose 4.Filler 14 between axial flow blower 15 and shower 13 is also installed in casing 1.
During as evaporative condenser, prime heat exchanger 3 and rear class the heat exchanger 2 preferably mode of being arranged above and below are arranged.The spray water flow flowing down from top heat exchanger is fallen in water leg 6 after the heat exchanger of below.
The interior heat exchanger of the utility model casing 1 can be the two-stage shown in Fig. 1, can be also more than three grades, and three grades of above adjacent front and back level annexations are with embodiment mono-.

Claims (5)

1. discharge opeing formula condensing unit in the middle of, comprise that lower end is provided with the casing (1) of axial flow blower (15) with air inlet (7), upper end, it is characterized in that: the prime heat exchanger (3) being provided with in casing (1) and rear class heat exchanger (2), the heat exchanger tube front end of prime heat exchanger (3) is connected with prime upstream end collector (10), and rear end is connected with prime exit collector (9); The heat exchanger tube front end of rear class heat exchanger (2) is connected with rear class upstream end collector (12), and rear end is connected with rear class exit collector (11); Prime exit collector (9) is connected with rear class upstream end collector (12) by pipeline, introduces rear class heat exchanger (2) for the gas that prime heat exchanger (3) is discharged; Discharging tube in the middle of prime exit collector (9) is also connected with.
2. middle discharge opeing formula condensing unit as claimed in claim 1, it is characterized in that: also comprise the water leg (6) that is positioned at casing (1) below, connect the water pump (5) of water leg (6) and be arranged on the shower (13) of the interior heat exchanger of casing (1) top; The filler (14) being positioned between axial flow blower (15) and shower (13) is also installed in casing (1).
3. middle discharge opeing formula condensing unit as claimed in claim 2, is characterized in that: prime heat exchanger (3) and rear class heat exchanger (2) take the mode of being arranged above and below to arrange.
4. the middle discharge opeing formula condensing unit as described in claim 1 or 2 or 3, is characterized in that: prime exit collector (9) and rear class exit collector (11) are connected with respectively fluid-tight (8).
5. the middle discharge opeing formula condensing unit as described in claim 1 or 2 or 3, is characterized in that: also comprise auxiliary condenser; The exit collector (11) of afterbody heat exchanger is connected with reservoir; Reservoir is connected with described auxiliary condenser by escape pipe.
CN201420424084.7U 2014-07-30 2014-07-30 Middle discharge opeing formula condensing unit Active CN203964695U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420424084.7U CN203964695U (en) 2014-07-30 2014-07-30 Middle discharge opeing formula condensing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420424084.7U CN203964695U (en) 2014-07-30 2014-07-30 Middle discharge opeing formula condensing unit

Publications (1)

Publication Number Publication Date
CN203964695U true CN203964695U (en) 2014-11-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420424084.7U Active CN203964695U (en) 2014-07-30 2014-07-30 Middle discharge opeing formula condensing unit

Country Status (1)

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CN (1) CN203964695U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105080177A (en) * 2015-09-14 2015-11-25 李永堂 Efficient separation and vacuum condensation system for non-condensable gas
CN112461013A (en) * 2020-11-17 2021-03-09 同济大学 Step-by-step condensation efficient anti-scaling evaporative condenser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105080177A (en) * 2015-09-14 2015-11-25 李永堂 Efficient separation and vacuum condensation system for non-condensable gas
CN112461013A (en) * 2020-11-17 2021-03-09 同济大学 Step-by-step condensation efficient anti-scaling evaporative condenser

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