CN204757774U - Non -contact heat exchanger - Google Patents
Non -contact heat exchanger Download PDFInfo
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- CN204757774U CN204757774U CN201520471814.3U CN201520471814U CN204757774U CN 204757774 U CN204757774 U CN 204757774U CN 201520471814 U CN201520471814 U CN 201520471814U CN 204757774 U CN204757774 U CN 204757774U
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Abstract
The utility model relates to a non -contact heat exchanger, including heat exchange tube and hollow heat exchanger shell, heat exchanger shell upper portion is worn to locate by the heat exchange tube, and heat exchange tube one end is equipped with the heat transferring medium entry, and the other end is equipped with the heat transferring medium export, heat exchanger shell is last to be equipped with heat source medium inlet, the export of heat source medium and heat -conducting medium entry, and heat source medium inlet and the export of heat source medium all are located the heat exchange tube below, and heat -conducting medium's is low -boiling in the temperature of heat source medium, still including the liquid level control mechanism of the interior liquid level height of control heat exchanger shell in the heat exchange tube below. The utility model discloses utilizing the phase transition of heat -conducting medium between heat source medium and heat exchange tube, realizing the non -contact heat transfer of heat source medium and heat exchange tube, be applicable to needs civilian or the industry field and retrieve thermal heat transfer place in sewage or the corrosivity waste water, the heat exchange tube is difficult to be taken place by corruption, scale deposit, jam scheduling problem.
Description
Technical field
The utility model belongs to technical field of heat exchangers, is specifically related to a kind of contactless heat exchanger, particularly relates to a kind of contactless heat exchanger for reclaiming heat in sewage or corrosive wastewater.
Background technology
At civilian and industrial circle, the sewage of recirculated water or discharge often has higher temperature, includes more heat transfer, but has the feature such as corrosivity, easily fouling, easily blocking due to it to ordinary heat exchanger, cause adopting ordinary heat exchanger to reclaim its heat, cause the waste of mass energy.
Therefore be necessary to design a kind of contactless heat exchanger, to overcome the problems referred to above.
Utility model content
The purpose of this utility model is the defect overcoming prior art, provides a kind of contactless heat exchanger, also can complete heat exchange when the hot liquid of heat to be recycled does not directly contact with heat-transfer surface.
The utility model is achieved in that
The utility model provides a kind of contactless heat exchanger, comprises the heat exchanger shell of heat exchanger tube and hollow, and described heat exchanger tube is arranged in described heat exchanger shell top, and described heat exchanger tube one end is provided with heat transferring medium entrance, and the other end is provided with heat transferring medium outlet; Described heat exchanger shell is provided with heat source medium entrance, heat source medium outlet and heat-conducting medium entrance, described heat source medium entrance and described heat source medium export and are all positioned at below described heat exchanger tube, described heat source medium entrance is connected with inlet tube, the outlet of described heat transferring medium is connected with outlet, and the boiling point of heat-conducting medium is lower than the temperature of heat source medium; Also comprise and control the level controling mechanism of liquid level below described heat exchanger tube in described heat exchanger shell.
-further, described level controling mechanism comprises ball-cock assembly and is located at the first valve on described outlet, and described ball-cock assembly comprises the valve body be located on described inlet tube, is positioned at the ball float of described heat exchanger shell and connects the connecting rod of described valve body and described ball float; Described heat source medium outlet is positioned at below described heat source medium entrance.
Preferred as one, the density of described heat-conducting medium is greater than the density of described heat source medium.
Further, the chamber between bottom described heat source medium entrance place horizontal plane and described heat exchanger shell is heat transfer region, and described heat source medium outlet is positioned at the top of described heat transfer region.
Further, in described heat transfer region, the volume of described heat-conducting medium is 1% ~ 2% of described heat source medium volume.
Preferred as one, the density of described heat-conducting medium is less than the density of described heat source medium.
Further, the chamber between bottom described heat source medium entrance place horizontal plane and described heat exchanger shell is heat transfer region, and described heat source medium outlet is positioned at bottom or the bottom of described heat transfer region.
Further, described level controling mechanism comprises central controller, the first control valve be located on described inlet tube, be located at the second control valve on described outlet and be positioned at the level sensing unit of described heat exchanger shell, the arrival end of described level sensing unit and described central controller is electrically connected, and described first control valve and described second control valve are all electrically connected with the port of export of described central controller.
Further, described heat source medium entrance and described heat transferring medium export the one end being all positioned at described heat exchanger shell, and described heat source medium outlet and described heat transferring medium entrance are all positioned at the other end of described heat exchanger shell.
Further, described heat-conducting medium entrance is located at the top of described heat exchanger shell.
Further, described heat exchanger tube is rib heat exchanging pipe.
The utility model has following beneficial effect: in heat exchanger shell, and heat exchanger tube is positioned at top, and level controling mechanism control medium liquid level is positioned at below heat exchanger tube, thus heat exchanger tube not with medium contact; Because the boiling point of heat-conducting medium is lower than the temperature of heat source medium, therefore heat-conducting medium evaporates and enters heat exchanger shell internal upper part under the effect of heat source medium heat, the heat-conducting medium steam of evaporation and heat exchanger tube contact heat-exchanging, thus realize the contactless indirect heat exchange of heat source medium and heat exchanger tube.The heat exchanger that the utility model provides is applicable to the heat exchange place needing to reclaim heat in sewage or corrosive wastewater that is civilian or industrial circle, because sewage or corrosive wastewater etc. do not contact with heat exchanger tube, the problems such as heat exchanger tube is not easily corroded, fouling, blocking, therefore long service life, effectively reclaims the heat of sewage or corrosive wastewater simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the contactless heat exchanger that Fig. 1 provides for the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
As Fig. 1, the utility model embodiment provides a kind of contactless heat exchanger, comprises the heat exchanger shell 6 of heat exchanger tube 5 and hollow, and described heat exchanger tube 5 is arranged in described heat exchanger shell 6 top, described heat exchanger tube 5 one end is provided with heat transferring medium entrance, and the other end is provided with heat transferring medium outlet.This heat exchanger tube 5 main part is positioned at heat exchanger shell 6, its two ends are each passed through the two ends of heat exchanger shell 6, namely its heat transferring medium entrance and heat transferring medium export and are all positioned at outside heat exchanger shell 6, low-temperature heat exchange medium enters heat exchanger tube 5 from described heat transferring medium entrance, high temperature heat transferring medium after heat exchange flows out from the outlet of described heat transferring medium, thus completes a heat transfer process.The circulation of heat transferring medium can adopt the mode of circulation, namely the heat of high temperature heat transferring medium is recovered and utilizes rear (as heating etc.) to be cooled to low-temperature heat exchange medium, enter heat exchanger tube 5 by pipeline again and complete a heat transfer process, so circulation constantly can reclaim heat.In addition, can within it arrange many heat exchanger tubes 5 according to the size of heat exchanger shell 6, improve heat exchange efficiency, heat exchanger shell 6 can be the structure such as cylindrical housings or cube shaped housing.Above-mentioned heat exchanger tube 5 is preferably and adopts rib heat exchanging pipe 5, can improve heat exchange efficiency.
Described heat exchanger shell 6 is provided with heat source medium entrance, heat source medium outlet and heat-conducting medium entrance, heat source medium entrance is for importing high temperature heat source medium 4, heat source medium outlet is for discharging cooled low-temperature heat source medium 4, and heat-conducting medium entrance is for importing heat-conducting medium 3.Described heat source medium entrance and described heat source medium export and are all positioned at below described heat exchanger tube 5, described heat source medium entrance is connected with inlet tube 1, described heat transferring medium outlet is connected with outlet 8, heat-conducting medium entrance is connected with heat-conducting medium ascending pipe 9, and the boiling point of heat-conducting medium 3 is lower than the temperature of heat source medium 4.The contactless heat exchanger that the present embodiment provides is preferably the heat for the sewage or corrosive wastewater reclaiming civilian or industrial circle, as: heat source medium 4 adopts temperature at the industrial wastewater of about 40 ~ 50 DEG C, now, heat-conducting medium 3 can adopt the cold-producing medium trichorotrifluoroethane for refrigerating field, the boiling point of this heat-conducting medium 3 is 47.68 DEG C, water insoluble, and density is higher than water.
Described heat exchanger also comprises the level controling mechanism of liquid level below described heat exchanger tube 5 in the described heat exchanger shell 6 of control, and this level controling mechanism can take following structure:
(1) described level controling mechanism comprises ball-cock assembly 2 and the first valve be located on described outlet 8, and described ball-cock assembly 2 comprises the valve body be located on described inlet tube 1, is positioned at the ball float of described heat exchanger shell 6 and connects the connecting rod of described valve body and described ball float.High temperature heat source medium 4 flow in inlet tube 1 is controlled by ball-cock assembly 2, by low-temperature heat source medium 4 flow in the first Valve controlling outlet 8, thus medium liquid level in controlled heat exchanger housing 6.Existing ball-cock assembly 2 is all applicable to the present embodiment, and its control principle repeats no more.Because ball float floats on liquid level all the time, therefore, the height of heat source medium entrance is the highest liquid level in heat exchanger shell 6, and now, heat source medium outlet need be positioned at below described heat source medium entrance.
(2) described level controling mechanism comprises central controller, the first control valve be located on described inlet tube 1, is located at the second control valve on described outlet 8 and is positioned at the level sensing unit of described heat exchanger shell 6, the arrival end of described level sensing unit and described central controller is electrically connected, and described first control valve and described second control valve are all electrically connected with the port of export of described central controller.By the liquid level in level sensing unit inspection heat exchanger shell 6, the real-time level altitude information of detection transferred to central controller and compares with the liquid level preset, reaching by the opening and closing of corresponding control first control valve and the second control valve the object controlling liquid level in heat exchanger shell 6.This mode automaticity is high, and this automation control method adopts existing Automated condtrol program can realize, without the need to other programming.For this structure, the position of the outlet of heat source medium entrance, heat source medium and heat-conducting medium entrance can flexible arrangement, as heat source medium entrance and heat source medium outlet are all positioned at heat exchanger shell 6 bottom, heat source medium entrance is positioned at above or below heat source medium outlet, and heat-conducting medium entrance is positioned on heat exchanger shell 6 top, bottom or sidewall.
After heat-conducting medium 3 and heat source medium 4 enter into and carry out heat exchange in heat exchanger shell 6, heat-conducting medium 3 evaporates and then rises to heat exchanger shell 6 top and heat exchanger tube 5 heat exchange, in this process, heat-conducting medium 3 is very important with the heat transfer process of heat source medium 4, and heat-conducting medium 3 determines the heat exchange efficiency of heat-conducting medium 3 and heat exchanger tube 5 with the heat exchange efficiency of heat source medium 4.Usually, the density that the density of heat-conducting medium 3 can be greater than heat source medium 4 also can be less than the density of heat source medium 4.As Fig. 1, when the density of heat-conducting medium 3 is greater than the density of heat source medium 4, it can sink below heat source medium 4 liquid level under gravity, because the boiling point of heat-conducting medium 3 is lower than the temperature of heat source medium 4, therefore heat-conducting medium 3 constantly seethes with excitement and flashes to gas, the heat of continuous absorption heat-exchange device endogenous pyrogen medium 4 in evaporation process, heat source medium 4 temperature reduces.In this case, not boiling heat-conducting medium 3 and through with heat exchanger tube 5 heat exchange after the heat-conducting medium 3 of condensation sink down into the middle and lower part of liquid in heat exchanger shell 6.With the chamber between bottom heat source medium entrance place horizontal plane and heat exchanger shell 6 for heat transfer region, namely above-mentioned heat-conducting medium 3 is positioned at the middle and lower part of heat transfer region, now, during the heat source medium 4 exported after discharge temperature reduces for avoiding heat source medium, the situation that heat-conducting medium 3 is also discharged in the lump, should be arranged on the top of described heat transfer region by described heat source medium outlet.In heat transfer region, the volume of heat-conducting medium 3 is 1% ~ 2% of heat source medium 4 volume, namely heat-conducting medium 3 shot shared by heat exchanger shell 6 endogenous pyrogen medium 4 volume 1% ~ 2%; This be due to: injection rate is crossed conference and is caused a large amount of heat-conducting medium 3 to deposit in heat exchanger shell 6, and too much heat-conducting medium 3 easily flows out from heat source medium outlet, and injection rate is too small, and heat transfer effect can be caused poor, and heat exchange is insufficient.When the density of heat-conducting medium 3 is less than the density of heat source medium 4, heat-conducting medium 3 can float on heat source medium 4, now, should arrange bottom or bottom that heat source medium outlet is positioned at described heat transfer region, heat-conducting medium 3 can be avoided to discharge with heat source medium.For shortening the climb of heat-conducting medium 3 gas of evaporation, the liquid level in heat exchanger shell 6 and the distance between heat exchanger tube 5 can not be long, heat source medium entrance can be located at the medium position of heat exchanger shell 6, as shown in Figure 1.In addition, heat-conducting medium entrance is preferably positioned at the top of heat exchanger shell 6, convenient control; Certainly, it is also arranged on the sidewall of heat exchanger shell 6, is good to be positioned at heat source medium entrance top.
As Fig. 1, in the present embodiment, be preferably one end heat source medium entrance and heat transferring medium outlet being located at heat exchanger shell 6, heat source medium outlet and heat transferring medium entrance be located at the other end of heat exchanger shell 6.Take this structure, temperature near the heat source medium 4 of heat transferring medium outlet side is higher, heat-conducting medium 3 gas above it is relatively intensive, temperature near the heat transferring medium of heat transferring medium inlet side is lower, heat-conducting medium 3 gas above it is relatively few, thus along the circulating direction of heat transferring medium, heat exchange efficiency improves gradually, namely form heat source medium 4 and the situation of the indirect reverse convection of heat transferring medium, be conducive to the raising of heat exchange efficiency.The heat source medium 4 of high temperature enters from heat exchanger shell 6 one end, discharge from heat exchanger shell 6 other end through the cooled low-temperature heat source medium 4 of heat exchange, be located at homonymy or the contiguous mode arranged than heat source medium entrance and heat source medium being exported, the heat utilization ratio for heat source medium 4 is high.
The course of work of the heat exchanger that the present embodiment provides is as follows: be connected by the waste water source of inlet tube 1 with heat to be recycled, outlet 8 is connected with wastewater discharge pipe, and heat transferring medium entrance is connected with cold water pipe, and heat transferring medium outlet is connected with delivery pipeline.Inlet tube 1 is provided with ball-cock assembly 2.Before heat exchanger runs, each valve closing.When heat exchanger runs, first the valve on inlet tube 1 and heat-conducting medium ascending pipe 9 is opened, the waste water of heat to be recycled enters in heat exchanger shell 6 by inlet tube 1, in heat exchanger shell 6, the ball float of liquid level and ball-cock assembly 2 constantly rises, when in heat exchanger shell 6, liquid level is higher than outlet 8 certain altitude, the water inlet of inlet tube 1 is closed by ball-cock assembly 2.Then by heat-conducting medium ascending pipe 9 filling heat-conductive medium 3, close the valve on heat-conducting medium ascending pipe 9 after injection, the density due to heat-conducting medium 3 is greater than the density of waste water, and heat-conducting medium 3 sinks under gravity below waste water liquid level; Because the boiling point of heat-conducting medium 3 is lower than wastewater temperature, heat-conducting medium 3 constantly seethes with excitement and flashes to gas in sinking watching, constantly absorbs the heat of waste water in evaporation process, and wastewater temperature reduces.Then open the valve on outlet 8, the waste water that temperature reduces is discharged by heat exchanger inside, and the liquid level in heat exchanger declines.Due to the effect of ball-cock assembly 2, the valve on inlet tube 1 is opened automatically, and the liquid level in maintenance heat exchanger shell 6, all the time higher than outlet 8, makes heat-conducting medium 3 steam in heat exchanger shell 6 can not flow out from outlet 8.Heat-conducting medium 3 steam in heat exchanger shell 6 rises to and finned heat exchanger tube 5 transmission of heat by contact, and constantly condensation heat becomes liquid, transfer heat to the cold water in heat exchanger tube 5, condensing into liquid heat-conducting medium 3 constantly drops onto in the waste water below heat exchanger tube 5, explosive evaporation again, circulation like this, realizes the contactless indirect heat exchange of waste water and heat exchanger tube 5.Exported by heat transferring medium after cold water temperature in heat exchanger tube 5 raises and flow out, can be used for heating or other purposes.
The utility model embodiment has following beneficial effect: in heat exchanger shell 6, and heat exchanger tube 5 is positioned at top, and level controling mechanism control medium liquid level is positioned at below heat exchanger tube 5, thus heat exchanger tube 5 not with medium contact; Because the boiling point of heat-conducting medium 3 is lower than the temperature of heat source medium 4, therefore heat-conducting medium 3 evaporates and enters heat exchanger shell 6 internal upper part under the effect of heat source medium 4 heat, heat-conducting medium 3 steam of evaporation and heat exchanger tube 5 contact heat-exchanging, thus the contactless indirect heat exchange realizing heat source medium 4 and heat exchanger tube 5.The heat exchanger that the utility model provides is applicable to the heat exchange place needing to reclaim heat in sewage or corrosive wastewater that is civilian or industrial circle, because sewage or corrosive wastewater etc. do not contact with heat exchanger tube 5, the problems such as heat exchanger tube 5 is not easily corroded, fouling, blocking, therefore long service life, effectively reclaims the heat of sewage or corrosive wastewater simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a contactless heat exchanger, is characterized in that: the heat exchanger shell comprising heat exchanger tube and hollow, and described heat exchanger tube is arranged in described heat exchanger shell top, and described heat exchanger tube one end is provided with heat transferring medium entrance, and the other end is provided with heat transferring medium outlet; Described heat exchanger shell be provided with heat source medium entrance for importing heat source medium, for discharge heat source medium heat source medium outlet and for importing the heat-conducting medium entrance of boiling point lower than the heat-conducting medium of described heat source medium temperature, described heat source medium entrance and described heat source medium export and are all positioned at below described heat exchanger tube, described heat source medium entrance is connected with inlet tube, and described heat transferring medium outlet is connected with outlet; Also comprise and control the level controling mechanism of liquid level below described heat exchanger tube in described heat exchanger shell.
2. contactless heat exchanger according to claim 1, it is characterized in that :-described level controling mechanism comprises ball-cock assembly and is located at the first valve on described outlet, and described ball-cock assembly comprises the valve body be located on described inlet tube, is positioned at the ball float of described heat exchanger shell and connects the connecting rod of described valve body and described ball float; Described heat source medium outlet is positioned at below described heat source medium entrance.
3. contactless heat exchanger according to claim 2, is characterized in that: the chamber between bottom described heat source medium entrance place horizontal plane and described heat exchanger shell is heat transfer region, and described heat source medium outlet is positioned at the top of described heat transfer region.
4. contactless heat exchanger according to claim 3, is characterized in that: in described heat transfer region, and the volume of described heat-conducting medium is 1% ~ 2% of described heat source medium volume.
5. contactless heat exchanger according to claim 2, is characterized in that: the chamber between bottom described heat source medium entrance place horizontal plane and described heat exchanger shell is heat transfer region, and described heat source medium outlet is positioned at bottom or the bottom of described heat transfer region.
6. contactless heat exchanger according to claim 1, it is characterized in that: described level controling mechanism comprises central controller, the first control valve be located on described inlet tube, be located at the second control valve on described outlet and be positioned at the level sensing unit of described heat exchanger shell, the arrival end of described level sensing unit and described central controller is electrically connected, and described first control valve and described second control valve are all electrically connected with the port of export of described central controller.
7. contactless heat exchanger according to any one of claim 1 to 6, it is characterized in that: described heat source medium entrance and described heat transferring medium export the one end being all positioned at described heat exchanger shell, described heat source medium outlet and described heat transferring medium entrance are all positioned at the other end of described heat exchanger shell.
8. contactless heat exchanger according to any one of claim 1 to 6, is characterized in that: described heat-conducting medium entrance is located at the top of described heat exchanger shell
Contactless heat exchanger according to any one of claim 1 to 6, is characterized in that: described heat exchanger tube is rib heat exchanging pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471814.3U CN204757774U (en) | 2015-07-03 | 2015-07-03 | Non -contact heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520471814.3U CN204757774U (en) | 2015-07-03 | 2015-07-03 | Non -contact heat exchanger |
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| CN204757774U true CN204757774U (en) | 2015-11-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964588A (en) * | 2015-07-03 | 2015-10-07 | 中冶南方工程技术有限公司 | Non-contact heat exchanger |
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2015
- 2015-07-03 CN CN201520471814.3U patent/CN204757774U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964588A (en) * | 2015-07-03 | 2015-10-07 | 中冶南方工程技术有限公司 | Non-contact heat exchanger |
| CN104964588B (en) * | 2015-07-03 | 2017-01-18 | 中冶南方工程技术有限公司 | Non-contact heat exchanger |
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