CN1056443C - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
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- CN1056443C CN1056443C CN 94195214 CN94195214A CN1056443C CN 1056443 C CN1056443 C CN 1056443C CN 94195214 CN94195214 CN 94195214 CN 94195214 A CN94195214 A CN 94195214A CN 1056443 C CN1056443 C CN 1056443C
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- heat exchange
- heat
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- pipe
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Abstract
The present invention relates to a heat-exchanging system which can effectively make a great amount of fluid exchange heat and simplify structure. A heat exchange passage (10) is arranged at the inner side of a heat exchange vessel which is used to supply and discharge liquid nitrogen serving as a heat transfer medium. The heat exchange passage (10) is used to collocate loop pipes (18) into multiple rows to make adjacent loop pipes (18) stagger positions with each other in a circumferential direction in a plurality of positions to be communicated through a communicating tube (19). The supply inlet side and the discharge outlet side are respectively communicated with a tank (20) and a tank (21), wherein the tank (20) is communicated with a supply tube (11), and the tank (21) is communicated with a discharge tube (12). The positions of the inflow inlet and the outflow outlet of each loop pipe (18) stagger in a circumferential direction so as to make fluid repeatedly surge the wall surface of the heat exchange passage (10) and flow under a turbulent condition, and therefore, the loop pipe largely influenced by the temperature of the wall surface.
Description
Technical field
The present invention relates to a kind of improved heat-exchange device.
Background technology
, nitrogen, oxygen, argon gas and other gas of liquefaction was stored in the ultralow temperature storage tank in the past, during use, with the liquid gas of storing import evaporimeter, evaporation and gasification under atmospheric temperature or warm water effect.
But, conventional art can not effectively utilize the refrigeration power of liquid gas, wasted this refrigeration power, in order effectively to utilize this refrigeration power, the fluids such as gaseous mixture of gas such as cooling air, nitrogen, oxygen, argon gas, hydrogen or liquid and gas can be considered the heat exchanger of packing between ultralow temperature storage tank and evaporimeter.
Heat exchanger in the past, known have various versions such as coiled, double-tube type, water injection type, bushing type, flange-cooled multitube.
But in above-mentioned heat exchanger in the past, the fluid that cool off is proper flow in pipe regularly, is subjected to the temperature effect of tube wall less, so cooling effect is not good.At this, for improving cooling effect, can utilize expansion valve to carry out throttling in the downstream, but like this can not a large amount of fluid of cooling processing.Thereby, when requiring to guarantee the fluid of a large amount of uniform temperatures, have out of use problem.
The objective of the invention is to overcome the problems referred to above, a kind of heat-exchange device is provided, need not make the fluid throttling, just can make a large amount of fluid high-effectives ground carry out heat exchange, thereby can access a large amount of heat-exchange fluids that certain pressure, uniform temperature are arranged, and easy to use, in addition can also simplified structure, thereby can eliminate fault and reduce cost simultaneously.
Summary of the invention
For achieving the above object, technological means of the present invention is provided with supply, discharges the heat exchange container of hot media, by a plurality of circumferentially (fluid) paths that are arranged side by side in this heat exchange container, circumferentially are communicated with make each circumferentially the heat exchange paths of many places communication paths be arranged circumferentially staggering in the position of the inflow entrance in (fluid) path and flow export, and pass fluid supply road and the discharge road that is communicated with above-mentioned heat exchanger passages between the wall of above-mentioned heat exchange container.Mean the members such as pipe that fluid is flowed at this alleged path.Below, comprise that claims adopt identical concept.
In above-mentioned technological means, heat exchange paths is provided with is supplying with oral-lateral and the tank body of discharging oral-lateral, preferably makes to supply with the road and discharge the road to be communicated with each jar.
As adopt the present invention of said structure, when the heat transfer medium are full of heat exchange container, when the fluid that will be used for heat exchange is conducted to heat exchange paths from supplying with the road, in heat exchange paths, the fluid that is supplied to flows into a plurality of circumferential passages that are arranged in juxtaposition and the communication paths that is communicated with them, owing to circumferentially staggering in the inflow entrance in the circumferential passages and the position of flow export, the wall of fluid repeated stock heat exchange paths and become Turbulence Flow, can capture the heat of heat transfer medium around here, the medium that perhaps conduct heat are seized heat, and the fluid after the heat exchange can be discharged to outside the heat exchange container by discharging the road.Like this, by the wall of fluid repeated stock heat exchange paths and in the turbulent condition current downflow, make fluid influenced by wall surface temperature, and, because the fluid from each communication paths is under the equal conditions in each circumferential passages, and spread out,, can make a large amount of fluid high-effectives ground carry out heat exchange so can not make the fluid throttling.In addition, owing to heat exchange paths is connected and composed by path, so can make designs simplification.
Brief description
Fig. 1 is the stereogram of the heat-exchange device major part of one embodiment of the invention;
Fig. 2 is that the heat-exchange device with Fig. 1 is assembled into the ultralow temperature storage tank of liquid nitrogen and the summary system diagram that makes use-case between the evaporimeter,
Fig. 3 is to use the dry air cooling experiment of the heat-exchange device of one embodiment of the invention system's pie graph of device,
Fig. 4 is to use the dry air of the heat-exchange device (2 grades ring-like) of one embodiment of the invention to cool off the chart (transverse axis: elapsed time, the temperature of the longitudinal axis, discharge dry air) of experimental result.
Fig. 5 is to use the dry air of the heat-exchange device (5 grades ring-like) of one embodiment of the invention to cool off the chart (transverse axis: elapsed time, the longitudinal axis: the temperature of discharging dry air) of experimental result.
Fig. 6 is the numerical tabular under each flow condition of dry air in the chart of Fig. 5.
Used symbol description is as follows among the figure.
2. heat-exchange device, 3. heat exchange container, 10. heat exchange paths, 11. supply pipes, 12. discharge pipe, 18. loop pipes (circumferential passages), 19. communicating pipes, 20. supply with the oral-lateral jar, 21. discharge oral-lateral jar, 100. compressors, 101. flowmeter, 102. weight meters, 103. one way pipes (1/2 inch), 104. liquid nitrogen (196 ℃), 105. heat exchangers, 106. digital pressure recorders, 107. digital temperature meter, 108. air receivers, 109. cool drying air.
Most preferred embodiment
Following with reference to description of drawings one embodiment of the invention.
Fig. 1 is the stereogram of the heat-exchange device major part of one embodiment of the invention, and Fig. 2 is assembled into the ultralow temperature storage tank of liquid nitrogen and the summary system diagram that makes use-case between the evaporimeter with heat-exchange device shown in Figure 1.
As shown in Figure 2, ultralow temperature storage tank 1 can be stored-196 ℃ liquid nitrogen, and the bottom of this ultralow temperature storage tank 1 is communicated with the bottom of the heat exchange container 3 of heat-exchange device 2 of the present invention through managing 4, and is provided with valve 5 in the centre of pipe 4.The top of heat exchange container 3 is communicated with the inlet of evaporimeter 6 through managing 8, and the outlet of evaporimeter 6 is communicated with supply pipe 9.Heat exchange paths 10 described later is set in the heat exchange container 3 of heat-exchange device 2, inserts the dry air supply pipe 11 and discharge pipe 12 heat exchange paths 10 connections therewith of logical heat exchange container 3.Supply pipe 11 and discharge pipe 12 be provided with valve 13 and 14 midway, and discharge pipe 12 is communicated with gas tank 15.Connect many supply pipes 16 on the gas tank 15, and be provided with valve 17 in the centre of each supply pipe 16.
As shown in Figure 1, above-mentioned heat exchange paths 10 by as the loop pipe 18 that is communicated with in a circumferential direction of circumferential passages, as communicating pipe 19 of communication paths, supply with oral-lateral jar 20, discharge oral-lateral jar 21 etc. and constitute.Loop pipe 18 is arranged in juxtaposition into ordered series of numbers (being 5 row in the illustrated example) in the mode that required interval is arranged round vertical axis and on above-below direction, and adjacent loop pipe 18 is communicated with by vertical communicating pipe 19 in many places to each other.Ge Lie communicating pipe 19 is each other in circumferentially alternately dislocation and roughly equally spaced setting up and down, thus, circumferentially staggering mutually in the inflow entrance in each row loop pipe 18 and the position of flow export, make these inflow entrances and flow export with not on same straight line opposed mode be provided with.The lower inside of ordered series of numbers loop pipe 18 and upper inner are being provided with supply oral-lateral jar 20 and are discharging oral-lateral jar 21, the pars intermedia of supplying with oral-lateral jar 20 is being communicated with the communicating pipe 22 with the most the next 18 one-tenths radial arrangement of loop pipe, and the upper end of discharge oral-lateral jar 21 is being communicated with the communicating pipe 23 with 18 one-tenth radial arrangement of loop pipe of upper.And above-mentioned supply pipe 11 is communicated with the bottom of supplying with oral-lateral jar 20, and above-mentioned discharge pipe 12 is communicated with the bottom of discharging oral-lateral jar 21.
Below, the operation principle of said structure is illustrated.
To supply with and be full of in the heat exchange container of heat-exchange device 2 through managing 4 from the liquid nitrogen of the conduct heat transfer medium of ultralow temperature storage tank 1.For preventing that container 3 from freezing, and imposes heat-insulating material 7.Under this state, infeed the supply oral-lateral jar 20 of the heat exchange paths 10 that is immersed in liquid nitrogen from the dry air that is used for heat exchange cooling of supply pipe 11.Infeed jar 20 interior dry airs and flow in the most the next loop pipe 18, and flow in its upper loop pipe 18 by communicating pipe 19 by the most the next loop pipe 18 by communicating pipes 22.Dry air with following order through flowing into communicating pipe 19 upper loop pipe 18, flowing into through communicating pipes 23 from upper loop pipe 18 and discharge in the oral-lateral jar 21 again.Like this, dry air absorbs as the refrigerating capacity (being that dry air is seized heat) of the liquid nitrogen of refrigerant from the wall of each pipe 18,19,22,23 and jars 20,21 and to be cooled in flow process.At this moment, dry air flow to when the most the next loop pipe 18 from communicating pipe 22, impact the wall of loop pipe 18, and, because as above-mentioned, in each row loop pipe 18 circumferentially staggering mutually in the position of inflow entrance, inflow entrance and flow export are not provided with on same straight line, thereby dry air is when communicating pipe 19 flows to loop pipe 18, impact loop pipe 18 wall and about shunting, particularly, through flowing into another strand dry air collision of impacting loop pipe 18 walls and shunting adjacent communicating pipe 19, become turbulent flow with equally, and flow in turn in the loop pipe 18 of upper.Like this, dry air impacts wall repeatedly, and in the turbulent condition current downflow that greatly is subjected to the wall surface temperature influence, because the dry air from each circuit communicating pipe 19 is under the identical conditions in each loop pipe 18, and dry air is not only flowed but discrete coming at certain circuit, thereby can draw refrigerating capacity (being that dry air is seized heat) efficiently from liquid nitrogen.
With supply pipe 11 function transposing with discharge pipe 12, make the effect of supply pipe 11 opposite with the effect of discharge pipe, or the effect of discharge pipe 12 opposite with the effect of supply pipe also be same.
From jar 21, flow to jars 15 by the cooled dry air of above-mentioned heat exchange,, can be dispensed to desirable field of employment, can be adjusted to proper temperature and use by mixing with air under the normal temperature etc. in each field of employment through many supply pipes 16 at this through discharge pipe 12.In addition, be sucked away negative hot liquid nitrogen through above-mentioned heat exchange and import evaporimeter through managing 8, evaporation becomes nitrogen under atmospheric temperature or warm water effect.The nitrogen that can will so obtain feeds to desirable field of employment through supply pipe 9.
The method of liquid nitrogen directly being supplied with evaporimeter 6 relatively in the past as adopting the mode of supplying with evaporimeter 6 after the heat-exchange device 2 of the embodiment of the invention carries out heat exchange, because the temperature of liquid nitrogen rises, thereby can improve the evaporation efficiency of evaporimeter 6.
The experimental result relevant with the dry air cooling effectiveness of the embodiment of the invention is shown below.This experiment is undertaken by following condition.Measure gas dry air pressure 6.8kg/cm
2
Below the dew point-80 ℃
9 ℃ of cold media gas liquid nitrogens of temperature temperature-196 ℃
Evaporating temperature-188 ℃
Natural evaporation amount 0.05kg/min
Experiment illustrates at Fig. 3 with the system diagram of device.
Be the summary of this experimental technique below.
1. the dry air of measuring usefulness is to supply with through 1/2 inch pipe from the delivery valve of factory.
2. for trying to achieve the relation of flow and pressure, adorn floating type flowmeter, at entrance side and outlet side dress digital pressure recorder in the heat exchanger entrance side.
3. heat exchanger should be made by the SUS material.
4. heat exchanger is placed in the SUS container made of simple enforcement insulation, is full of liquid nitrogen in container inside with very low frequencies (エ Le Off).Container is the style of opening that lid is arranged as far as possible.
5. for measuring the weight of evaporation back liquid nitrogen, SUS container made integral body is placed on the weight meter, measures by the variation of scale.Measure once minimizing value in per 30 seconds, and obtained the mean value of per 1 minute same flow.
6. enter in the air receiver through 1/2 inch one way pipe by the cooled dry air of heat exchange, measure variation of temperature by the digital temperature meter that is contained on the air receiver.
Experimental result is shown in Fig. 4 and Fig. 5.
Fig. 4 is to use 2 grades of ring-like heat exchangers (in Fig. 1, be to adopt loop pipe 18 is made epimere and hypomere 2 rings, uses communicating pipe 19 ways of connecting in addition between the two) time, the temperature and time of the cool drying air of discharging in the heat exchanger concern coordinate diagram.Time is supplied with from dry air and begins to count.
This experimental results reduction is as follows.
1. the heat exchanger effectiveness that cools off more at most of the flow of dry air is high more.
2. the relative under certain condition inlet pressure of dry air flow, outlet pressure roughly keep certain pressure, almost do not have pressure oscillation.
3. the minimum temperature of the dry air of Pai Chuing can reach-162 ℃, relative certain flow, and the refrigerating gas of generation uniform temperature, and temperature-resistant.
4. in 2 rings, only discharge refrigerating gas, lose liquefaction phenomenon.
5. supply with back 2-3 minute at dry air, temperature roughly reaches-160 ℃.
When Fig. 5 is to use 5 grades of ring-like heat exchangers, cool drying air themperature and time relation coordinate diagram that heat exchanger is discharged.Time is supplied with from dry air and begins to count.
Adopt the foregoing description, needn't can carry out heat exchange to a large amount of dry airs efficiently to the dry air throttling, thereby can access a large amount of dry air that is cooled to uniform temperature.In addition, because dry air can be done a short stay after in supply pipe 11 infeeds the jar 20 of supplying with oral-lateral, so can make dry air with communicating pipes 19 supply of uniform pressure, uniform flux to each circuit.In addition, because cooled dry air can be done short stay through depositing in the communicating pipe 19 of each circuit after discharging in the oral-lateral jar 21 at a certain temperature, so cooled dry air is supplied with to the field of employment with uniform pressure, even amount.And the diameter by increasing loop pipe 18, communicating pipe 19 etc., area, length, jars 20,21 volume can increase the dry air amount of cooling easily.
In the above-described embodiments, circumferential passages, communication paths are supplied with road, discharge road etc. and have been adopted section to be shaped as circular pipe 18,19,11,12, are square or oval-shaped pipe but also can adopt section configuration.
In addition, circumferential passages is not limited to ring-type, can be square or oval, and communicating pipe 19 can not be uniformly-spaced to be provided with also.The diameter of each loop pipe can be different separately.Can not be positioned at communicating pipe between the adjacent loop pipe, for example can will be communicated with between one the loop pipe of being separated by.In addition, much less as the heat transfer medium except liquid nitrogen, can use refrigerants such as liquefaction oxygen, liquefaction argon, LNC, when improving temperature, also can adopt heating agent, much less for the fluid that will carry out heat exchange except dry air, can also use gases such as nitrogen, oxygen, hydrogen, argon gas, natural gas, also can use liquefaction and the mist of gas etc.Particularly, also can be as the loop pipe 18 of circumferential passages around trunnion axis with state arrangement ordered series of numbers laterally arranged side by side.In addition, the present invention can make all change designs in the scope that does not exceed its basic fundamental thought.
Adopt the present invention of above explanation, when being full of heat exchange container with the heat transfer medium, when the fluid that heat exchange is used is supplied with through supplying with the road direction heat exchange paths, in heat exchange paths, the fluid of being supplied with flows into the circumferential passages of a plurality of state arrangement arranged side by side and the communication paths that is communicated with these circumferential passages, because in the circumferential passages circumferentially staggering in inflow entrance and flow export position, flow in turbulent mode in the wall limit of fluid limit repeated stock heat exchange paths, around here, can capture the heat of heat transfer medium, perhaps seized heat by the heat transfer medium, the fluid after the heat exchange can be discharged outward by discharging the road direction heat exchange container.Wall limit by making fluid limit repeated stock heat exchange paths is in the turbulent condition current downflow like this, can make the fluid influences that are subjected to wall surface temperature more, in addition, because the turbulent flow of fluid expands, temperature descends, and, because in each circumferential passages, the fluid of having sent here from each communication paths is under the identical conditions, and fluid can all not flow into specific communication paths but spread out, so can not produce the fluid throttling, can make a large amount of fluids carry out heat exchange efficiently.Thereby can obtain the heat-exchange fluid of uniform temperature in a large number, and easy to use, in addition, because heat exchange paths can connect and compose by path, the energy simplified structure reduces cost thereby can eliminate fault.
In addition, heat exchange paths is provided with to be positioned at supplies with oral-lateral and the tank body of discharging oral-lateral, be communicated with each tank body by supplying with the road and discharging the road, fluid can be done brief stay from supplying with after the road deposits in the supply oral-lateral jar, so, can supply with the communication paths of each circuit with uniform pressure, uniform flux, in addition, because fluid after the uniform temperature heat exchange can be done brief stay after the communication paths of each circuit deposits in the exhaust side jar, so can supply with the field of employment with uniform pressure, uniform flux, can more stably be used.
As above-mentioned, heat-exchange device of the present invention can be used as the heat-exchange device of air cooling usefulness, and the heat-exchange device of using as large capacity conditioner also is applicable to particularly that cold storage warehouse etc. is larger and requires the heat-exchange device in low temperature place.
Claims (3)
1. heat exchange paths that heat-exchange device is used, it is characterized in that inflow entrance that it circumferentially is provided with by the circumferential passages of the circumferential connection of a plurality of state configuration arranged side by side, the position of inflow entrance and flow export in each circumferential passages with staggering and flow export, the communication paths that the inflow entrance of circumferential passages is communicated with flow export constitute.
2. a heat-exchange device is characterized in that, described heat-exchange device comprises: the heat exchange container that is used to supply with, discharge a side medium; Be arranged on the heat exchange paths in the described heat exchange container, circumferentially the inflow entrance of setting and flow export, communication paths that the inflow entrance of circumferential passages is communicated with flow export constitute described heat exchange paths with staggering by the circumferential passages of the circumferential connection of a plurality of state configuration arranged side by side, the position of inflow entrance and flow export in each circumferential passages; Supply road and discharge road with the opposite side medium that is communicated with described heat exchange paths.
3. heat-exchange device as claimed in claim 2 is characterized in that, heat exchange paths has the jar that is positioned at the supply oral-lateral and discharges oral-lateral, supplies with the road and is communicated with each jar with the discharge road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94195214 CN1056443C (en) | 1994-12-14 | 1994-12-14 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94195214 CN1056443C (en) | 1994-12-14 | 1994-12-14 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1174606A CN1174606A (en) | 1998-02-25 |
| CN1056443C true CN1056443C (en) | 2000-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94195214 Expired - Fee Related CN1056443C (en) | 1994-12-14 | 1994-12-14 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056443C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383321B (en) * | 2018-11-13 | 2024-02-13 | 武汉银桥南海光电有限公司 | Fill electric pile with inner loop formula heat radiation structure |
-
1994
- 1994-12-14 CN CN 94195214 patent/CN1056443C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1174606A (en) | 1998-02-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Granted publication date: 20000913 Termination date: 20121214 |