CN203550696U - Plate heat exchanger - Google Patents
Plate heat exchanger Download PDFInfo
- Publication number
- CN203550696U CN203550696U CN201320737551.7U CN201320737551U CN203550696U CN 203550696 U CN203550696 U CN 203550696U CN 201320737551 U CN201320737551 U CN 201320737551U CN 203550696 U CN203550696 U CN 203550696U
- Authority
- CN
- China
- Prior art keywords
- pipe
- cold water
- heat exchanger
- inlet pipe
- formaldehyde
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 235000019256 formaldehyde Nutrition 0.000 abstract 5
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 11
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 5
- 229920006324 polyoxymethylene Polymers 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a plate heat exchanger and belongs to the technical field of heat exchanging. The plate heat exchanger comprises a heat exchanging center, a methanal inlet pipe, a methanal outlet pipe, a cold water inlet pipe and a cold water outlet pipe, wherein the methanal inlet pipe, the methanal outlet pipe, the cold water inlet pipe and the cold water outlet pipe are connected with the heat exchanging center. The plate heat exchanger further comprises an outlet pipe, a water return pipe and a by-pass pipe, wherein the outlet pipe and the water return pipe are connected to the tail end of the cold water outlet pipe, the by-pass pipe is provided with a regulating valve which is connected with the methanal outlet pipe through signals, the other end of the water return pipe is connected to the cold water inlet pipe, and the water return pipe is provided with a pipeline pump which is connected with the opening of the cold water inlet pipe through signals. The plate heat exchange can effectively avoid incrustation accumulation and improve heat exchanging efficiency.
Description
Technical field
The utility model relates to technical field of heat exchange, particularly a kind of plate type heat exchanger.
Background technology
Heat exchanger (being also called heat exchanger or heat-exchange apparatus) is for making heat be delivered to cold fluid from hot fluid, to meet the device of required technological requirement, is convection heat transfer' heat-transfer by convection and heat conducting a kind of commercial Application.Plate type heat exchanger is a kind of new type high efficient heat exchanger being formed by a series of sheet metal closed assemblies with certain bellows-shaped.Between various plates, form thin rectangular shape passage, by half sheet, carry out exchange heat.Plate type heat exchanger is the ideal equipment that liquid-liquid, liquid-vapour carry out heat exchange.
As shown in Figure 1, existing plate type heat exchanger comprise change have a plurality of heat exchange plates thermal center (-tre) 1, be connected to some feed tubes 2 and some drain pipes 3 on heat exchange center 1.The fluid that need to carry out heat exchange enters respectively from feed tube 2, through carrying out heat exchange in heat exchange center 1, then from drain pipe 3, flows out.When the heat exchanger shown in application drawing 1 carries out heat exchange and obtains the formaldehyde of 50% concentration, need to must be at 60 ± 2 degrees Celsius from drain pipe 3 formaldehyde temperature out.Yet, because cooling water temperature is lower, particularly during winter, cooling water enters the temperature at heat exchange center lower than 15 degrees Celsius, now, for controlling the temperature of the formaldehyde flowing out, can only by valve, carry out throttling to cooling water, again because the flow velocity after throttling is slow, the temperature that cooling water flow out of heat exchange center will approach formaldehyde and flow out 60 degrees Celsius of the temperature at heat exchange center 1, and the scaling tendency of cooling water side in the heat exchange center 1 that now will greatly accelerate, accelerates intracardiac scale velocity in heat exchange.Reduction of heat exchange efficiency after the fouling of heat exchange center, the flow that can only strengthen again cooling water meets original heat exchange amount, because cold in-water temperature is low, the formaldehyde of fraction position occurred cold, thereby there is polyformaldehyde, when polyformaldehyde constantly occurs, flowing can be slack-off, and polyformaldehyde can accelerate to gather, and even this heat exchange center 1 blocks completely.Narrowing down of formaldehyde runner adds slowly part formaldehyde runner flow velocity, heat exchange center 1 is carried out the plate of heat exchange and slowly in trend, is concentrated, so incrustation scale slowly forms and gathers on these plates, after these plates are slowly stopped up by incrustation scale, the heat exchange efficiency of whole heat exchanger will be very low, production efficiency is caused to serious impact.In order to recover the heat exchange efficiency of heat exchanger, can only keep in repair by heat exchanger, take cleaning polyformaldehyde apart, clean incrustation scale, and because the dismounting of heat exchanger must removable parts or whole sealing joint strips, each time a large amount of manpower and the material resources of maintenance needs.
Utility model content
In view of the above, the utility model is necessary to provide a kind of plate type heat exchanger incrustation scale and that can improve heat exchange efficiency that prevents from gathering.
A kind of plate type heat exchanger, comprise heat exchange center, the formaldehyde inlet pipe being connected with heat exchange center, formaldehyde go out pipe, cold water inlet pipe, cold water and go out pipe, plate type heat exchanger further comprises outlet, return pipe and bypass pipe, outlet and return pipe are connected to the end that cold water goes out pipe, on bypass pipe, be provided with control valve, control valve goes out to manage signal with described formaldehyde and is connected, the described return pipe other end is connected to described cold water inlet pipe, on return pipe, be provided with tubing pump, tubing pump is connected with the mouth of pipe signal of cold water inlet pipe.
Further, plate type heat exchanger also comprises controller, and described controller and described control valve, tubing pump are electrically connected.
Further, described controller is PLC.
Compared to prior art, plate type heat exchanger of the present utility model connects return pipe by go out the end of pipe at described cold water, and in order to force cold water to go out to manage backflow hot water to cold water inlet pipe, the water yield refluxing by control is controlled from the inflow temperature of cold water inlet pipe; By connect described bypass pipe on outlet, on bypass pipe, be provided with control valve, control valve goes out pipe with described formaldehyde and is connected by signal, can according to formaldehyde, go out the temperature signal of pipe, outlet is carried out to throttling control, thereby can control the temperature that formaldehyde goes out pipe.Thereby solve the too low technical problem of temperature that cooling water enters heat exchanger, avoid the fouling of heat exchange center heat exchanger plates, needn't be often heat exchanger plates more, improved production efficiency, saved production cost.
Accompanying drawing explanation
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to be illustrated more clearly in the technical solution of the utility model, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, accompanying drawing in description is only corresponding to specific embodiments more of the present utility model, to those skilled in the art, do not paying under the prerequisite of creative work, in needs, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the plate type heat exchanger knot schematic diagram of prior art;
The plate type heat exchanger theory diagram of Fig. 2 the utility model preferred embodiment.
The specific embodiment
In order to elaborate the utility model, be to reach predetermined technique object and the technical scheme taked, below in conjunction with the accompanying drawing in the utility model embodiment, to the technical scheme in the utility model embodiment, carry out clear, intactly describe, obviously, described embodiment is only part embodiment of the present utility model, rather than whole embodiment, and, do not paying under the prerequisite of creative work, technological means in embodiment of the present utility model or technical characterictic can be replaced, describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Refer to Fig. 2, the plate type heat exchanger of the utility model preferred embodiment, comprises heat exchange center 11, and the formaldehyde inlet pipe 12 being connected with heat exchange center 11, formaldehyde go out pipe 13, cold water inlet pipe 14, cold water and go out pipe 15.The formaldehyde of heat flows into heat exchange centers 11 from formaldehyde inlet pipe 12, and cold water is from flowing into heat exchange centers 11 from water inlet pipe 14, thereby cold water conducts heat with hot formaldehyde, and formaldehyde temperature reduces by formaldehyde, to go out pipe 13 and flow out, and cold water temperature raises and goes out pipe 15 outflows by cold water.
Plate type heat exchanger further comprises outlet 21, return pipe 22 and bypass pipe 23.Described outlet 21 is connected to return pipe 22 end that cold water goes out pipe 15, and the current that make cold water go out pipe 15 outflows are divided into two-way.Described bypass pipe 23 is connected on outlet 21, and the water section that outlet 21 flows out is flowed out, and part flow in bypass pipe 23.On bypass pipe 23, be provided with control valve 30, control valve 30 goes out pipe 13 with described formaldehyde and is connected by signal, can according to formaldehyde, go out the temperature signal of pipe 13, outlet 21 is carried out to throttling control, thereby can control the temperature that formaldehyde goes out pipe 13.
Described return pipe 22 other ends are connected to described cold water inlet pipe 14, thereby formation water circulation, on return pipe 22, be provided with tubing pump 40, in order to force cold water to go out pipe 15 backflow hot water to cold water inlet pipe 14, and tubing pump 40 is connected with the mouth of pipe signal of cold water inlet pipe 14, can be according to the temperature of the mouth of pipe water inlet of cold water inlet pipe 14, tubing pump 40 carries out VFC, and the water yield refluxing by control is controlled from the inflow temperature of cold water inlet pipe 14.
During formaldehyde heat exchange water inlet, control valve 30 goes out the temperature signal of pipe 13 according to formaldehyde, the flow of outlet 21 is controlled.The water that goes out pipe 15 a part of high temperature of drawing from cold water is got back to 14 mouthfuls of sides of cold water inlet pipe, improve the cooling water temperature that enters heat exchange center 11, as long as temperature is brought up to certain degree, formaldehyde side there will be no polyformaldehyde to produce, by installing described tubing pump 40 additional, forced refluence hot water, the inlet temperature of cold water inlet pipe 14 cold water of simultaneously take is carried out VFC as reference value to this tubing pump 40, by controlling backwater amount, controls inflow temperature.
Be appreciated that plate type heat exchanger of the present utility model also comprises controller (not shown), described controller and described control valve 30, tubing pump 40 are electrically connected.Controller described in the present embodiment is PLC.
Its principle is: formaldehyde outlet temperature is set as to a particular value, with controller, control cooling water backwater amount and reach the required temperature of this particular value, heat exchange center 11 cooling water inlet temperatures are also set, by the backwater amount of tubing pump 40, realize this temperature value, with controller, control the rotating speed of tubing pump 40 to reach the object of the controlled circulation water yield.
To sum up, plate type heat exchanger of the present utility model solves the too low technical problem of temperature that cooling water enters heat exchanger, avoids the fouling of the heat exchanger plates at heat exchange center, needn't be often heat exchanger plates more, improved production efficiency, saved cost.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, according to technical spirit of the present utility model, within spirit of the present utility model and principle, the any simple modification that above embodiment is done, be equal to replacement and improvement etc., within all still belonging to the protection domain of technical solutions of the utility model.
Claims (3)
1. a plate type heat exchanger, comprise heat exchange center (11), the formaldehyde inlet pipe (12) being connected with heat exchange center (11), formaldehyde goes out pipe (13), cold water inlet pipe (14), cold water goes out pipe (15), it is characterized in that: further comprise outlet (21), return pipe (22) and bypass pipe (23), outlet (21) is connected to return pipe (22) end that cold water goes out pipe (15), on bypass pipe (23), be provided with control valve (30), control valve (30) goes out pipe (13) signal with described formaldehyde and is connected, described return pipe (22) other end is connected to described cold water inlet pipe (14), on return pipe (22), be provided with tubing pump (40), tubing pump (40) is connected with the mouth of pipe signal of cold water inlet pipe (14).
2. plate type heat exchanger according to claim 1, is characterized in that: also comprise controller, described controller and described control valve (30), tubing pump (40) are electrically connected.
3. plate type heat exchanger according to claim 2, is characterized in that: described controller is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737551.7U CN203550696U (en) | 2013-11-21 | 2013-11-21 | Plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737551.7U CN203550696U (en) | 2013-11-21 | 2013-11-21 | Plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203550696U true CN203550696U (en) | 2014-04-16 |
Family
ID=50468802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320737551.7U Expired - Lifetime CN203550696U (en) | 2013-11-21 | 2013-11-21 | Plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203550696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423775A (en) * | 2015-12-18 | 2016-03-23 | 山西云端水环境科技有限公司 | Anti-scale type temperature adjusting water cooler |
| CN111156844A (en) * | 2020-03-14 | 2020-05-15 | 安徽恒顺生产力促进中心有限公司 | Automatic temperature control device of heat exchanger and working method |
| CN113813626A (en) * | 2021-09-27 | 2021-12-21 | 宁夏滨泽新能源科技有限公司 | Distillation feeding system and method |
-
2013
- 2013-11-21 CN CN201320737551.7U patent/CN203550696U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423775A (en) * | 2015-12-18 | 2016-03-23 | 山西云端水环境科技有限公司 | Anti-scale type temperature adjusting water cooler |
| CN111156844A (en) * | 2020-03-14 | 2020-05-15 | 安徽恒顺生产力促进中心有限公司 | Automatic temperature control device of heat exchanger and working method |
| CN113813626A (en) * | 2021-09-27 | 2021-12-21 | 宁夏滨泽新能源科技有限公司 | Distillation feeding system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |