CN114034203A - Heat exchanger system and cleaning method of heat exchanger - Google Patents
Heat exchanger system and cleaning method of heat exchanger Download PDFInfo
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- CN114034203A CN114034203A CN202111409003.7A CN202111409003A CN114034203A CN 114034203 A CN114034203 A CN 114034203A CN 202111409003 A CN202111409003 A CN 202111409003A CN 114034203 A CN114034203 A CN 114034203A
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- heat exchanger
- water receiving
- cleaning
- receiving part
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchanger system and a cleaning method of a heat exchanger, wherein the heat exchanger system comprises: the heat exchanger comprises a first heat exchange section and a second heat exchange section, so that heat exchange gas sequentially passes through the first heat exchange section and the second heat exchange section; the cleaning device comprises a first water receiving part, a second water receiving part and a cleaning mechanism, wherein the first water receiving part is positioned below the first heat exchange section and is provided with a discharge port; the second water receiving part is positioned below the second heat exchange section; the cleaning mechanism is communicated with the second water receiving part, so that the cleaning mechanism can be used for cleaning the heat exchanger by using the condensed water in the second water receiving part. The heat exchanger system solves the problem that a heat exchanger in the prior art is inconvenient to clean.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a heat exchanger system and a cleaning method of a heat exchanger.
Background
Along with the wide application of low temperature belt drier in the mud stoving field, it can realize whole mud stoving process low temperature, low dust safe operation, but low dust operation is to medium temperature and high temperature stoving, the two dust volume of back comparison is really greatly reduced, nevertheless still there is more dust in the actual stoving process, dimension guarantor projects such as the inside deashing of equipment, heat exchanger washing have been increased, extra personnel's input has not only been increased, and the dust that produces is when passing fin condensation heat exchanger, mix with fin surface condensate water and form the dirt, adhere to on the heat exchanger surface and not only influence heat exchanger heat transfer efficiency, still seriously corrode the heat exchanger and cause the pipeline to reveal.
At present, two difficult technical bottlenecks of a belt type drying machine are respectively the generation of dust and the corrosion of a heat exchanger, and under the condition that the dust cannot be completely solved, the situation that the dust corrodes the heat exchanger after being scaled when encountering water also happens concomitantly, so frequent manual cleaning and maintenance and the scaling corrosion of the heat exchanger also become the technical problems which are mainly solved by the equipment.
In addition, when moist and hot air with a small amount of dust (powdered sludge) is subjected to moist heat exchange through the fin type heat exchanger, because the windward fin is close to the windward side, condensed water generated on the surface of the fin is mixed with the dust in the air to form sludge attached to the surface; and the air flowing through the leeward fins has no dust, and only condensed water is generated on the surfaces of the fins. Therefore, different cleaning requirements are met for different positions of the finned heat exchanger of the belt type drying machine.
Disclosure of Invention
The invention mainly aims to provide a heat exchanger system and a cleaning method of a heat exchanger, and aims to solve the problem that the heat exchanger in the prior art is inconvenient to clean.
In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchanger system comprising: the heat exchanger comprises a first heat exchange section and a second heat exchange section, so that heat exchange gas sequentially passes through the first heat exchange section and the second heat exchange section; the cleaning device comprises a first water receiving part, a second water receiving part and a cleaning mechanism, wherein the first water receiving part is positioned below the first heat exchange section and is provided with a discharge port; the second water receiving part is positioned below the second heat exchange section; the cleaning mechanism is communicated with the second water receiving part, so that the cleaning mechanism can be used for cleaning the heat exchanger by using the condensed water in the second water receiving part.
Furthermore, the second water receiving part is provided with a first opening; the wiper mechanism includes: the liquid spraying end of the spray head faces the heat exchanger; the first end of the first connecting pipe is connected with the second water receiving part, and the first end of the first connecting pipe is communicated with the second water receiving part through the first opening; the second end of the first connecting pipe is connected with the spray head; and the infusion pump is arranged on the first connecting pipe.
Further, the cleaning mechanism further comprises: and the filter is arranged on the first connecting pipe and is positioned between the first end of the first connecting pipe and the infusion pump.
Further, the second water receiving part is provided with a second opening; the cleaning device further comprises: the second connecting pipe is connected with the second water receiving part and communicated with the second water receiving part through a second opening so as to discharge liquid and impurities in the second water receiving part; and the control valve is arranged on the second connecting pipe to control the on-off of the second connecting pipe.
Furthermore, the cleaning device comprises a water receiving tray structure, the water receiving tray structure is provided with a first groove and a second groove, the first groove is a first water receiving portion, and the second groove is a second water receiving portion.
Furthermore, the water pan structure is also provided with a communicating groove, the first end of the communicating groove is communicated with the first groove, and the second end of the communicating groove is communicated with the second groove, so that when the liquid in the second groove reaches a preset liquid level, the liquid flows into the first groove through the communicating groove and is discharged from the discharge port.
Further, a protection plate is arranged at the bottom of the heat exchanger; the protection plate is provided with a first through hole, and the first through hole is opposite to the first heat exchange section; and/or the protection plate is provided with a second through hole, and the second through hole and the second heat exchange section are arranged oppositely.
Further, at least part of the surface of the heat exchanger is provided with a hydrophobic coating.
Further, the cleaning mechanism comprises a spray head, and a liquid spraying end of the spray head is arranged towards the first heat exchange section so as to clean the first heat exchange section.
According to another aspect of the present invention, there is provided a cleaning method of a heat exchanger, including: and detecting the running state of the heat exchanger, and controlling a cleaning mechanism of the cleaning device to clean the heat exchanger when detecting that the heat exchanger is in a shutdown state.
Further, the cleaning method of the heat exchanger comprises the following steps: and detecting the working state duration of the heat exchanger, and controlling the second control valve to be opened after the working state duration of the heat exchanger reaches a first preset duration.
Further, the cleaning method of the heat exchanger comprises the following steps: and detecting the opening duration of the control valve, and controlling the control valve to be closed after detecting that the control valve is continuously opened for a second preset duration.
Further, the method for controlling the cleaning mechanism of the cleaning device to clean the heat exchanger comprises the following steps: and controlling the cleaning mechanism to stop running after detecting that the running time of the cleaning mechanism reaches a third preset time or the infusion pump idles.
The cleaning device receives the condensed water generated by the second heat exchange section through the second water receiving part and uses the condensed water of the second water receiving part for cleaning the heat exchanger through the cleaning mechanism, the heat exchanger can continuously generate the condensed water in the operation process, and the reliability of cleaning the heat exchanger is ensured; moreover, because the first heat exchange section is positioned on the windward side, when the gas with dust contacts the first heat exchange section, the condensed water and the dust generated on the surface of the first heat exchange section are mixed and flow into the first water receiving part, and the mixed liquid of the condensed water and the dust in the first water receiving part cannot be used for cleaning the heat exchanger, so the mixed liquid is discharged through the discharge port; when the gas flows to the second heat exchange section, no dust exists in the gas, and only condensed water is generated on the surface of the second heat exchange section and can be used for cleaning the heat exchanger. Therefore, the cleaning device can respectively treat the condensed water which is generated by the heat exchanger and can be used for cleaning and the condensed water with impurities, so that the heat exchanger can be automatically and effectively cleaned without manual intervention, and the cleaning effect is good; in addition, the cleaning device utilizes the condensed water continuously generated by the second heat exchange section to clean the heat exchanger, so that the reliability is high; the cleaning device in the heat exchanger system solves the problem that the heat exchanger is not convenient to clean.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic view of an embodiment of a heat exchanger system according to the present invention;
FIG. 2 shows a schematic structural view of a water-tray structure of a heat exchanger system according to the present invention;
FIG. 3 shows a schematic construction of a heat exchanger of the heat exchanger system according to the invention; and
fig. 4 shows a flow chart of a cleaning method of a heat exchanger according to the present invention.
Wherein the figures include the following reference numerals:
10. a heat exchanger; 11. a first heat exchange section; 12. a second heat exchange section; 13. a fin; 21. a first water receiving portion; 211. a discharge port; 22. a second water receiving portion; 221. a first opening; 222. a second opening; 24. a spray head; 25. a first connecting pipe; 26. an infusion pump; 27. a filter; 28. a second connecting pipe; 29. a control valve; 30. a water pan structure; 31. a communicating groove; 32. a third connecting pipe; 40. a protection plate; 41. a first through hole; 42. a second via.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The present invention provides a heat exchanger system, please refer to fig. 1 to 3, comprising: the heat exchanger 10 comprises a first heat exchange section 11 and a second heat exchange section 12, so that heat exchange gas sequentially passes through the first heat exchange section 11 and the second heat exchange section 12; the cleaning device comprises a first water receiving part 21, a second water receiving part 22 and a cleaning mechanism, wherein the first water receiving part 21 is positioned below the first heat exchange section 11, and the first water receiving part 21 is provided with a discharge port 211; the second water receiving part 22 is positioned below the second heat exchange section 12; the cleaning mechanism is communicated with the second water receiving portion 22, so that the cleaning mechanism can use the condensed water in the second water receiving portion 22 for cleaning the heat exchanger 10.
The heat exchanger system comprises a heat exchanger 10 and a cleaning device, wherein the cleaning device comprises a first water receiving part 21, a second water receiving part 22 and a cleaning mechanism, the cleaning device receives condensed water generated by a second heat exchange section 12 through the second water receiving part 22, the condensed water of the second water receiving part 22 is used for cleaning the heat exchanger 10 through the cleaning mechanism, the heat exchanger 10 can continuously generate the condensed water in the operation process, and the reliability of cleaning the heat exchanger 10 is ensured; moreover, because the first heat exchange section 11 is located on the windward side, when the gas with dust contacts the first heat exchange section 11, the condensed water and dust generated on the surface of the first heat exchange section 11 are mixed and flow into the first water receiving portion 21, and the mixed liquid of the condensed water and the dust in the first water receiving portion 21 cannot be used for cleaning the heat exchanger 10, so that the mixed liquid is discharged through the discharge port 211; when the gas flows to the second heat exchange section 12, no dust is in the gas, and only condensed water is generated on the surface of the second heat exchange section 12, and the condensed water can be used for cleaning the heat exchanger. Therefore, the cleaning device can respectively treat the condensed water which is generated by the heat exchanger 10 and can be used for cleaning and the condensed water with impurities, so that the heat exchanger 10 can be automatically and effectively cleaned without manual intervention, and the cleaning effect is good; in addition, the cleaning device utilizes the condensed water continuously generated by the second heat exchange section 12 to clean the heat exchanger 10, so that the reliability is high; the cleaning device in the heat exchanger system solves the problem that the heat exchanger 10 is inconvenient to clean.
Specifically, as shown in fig. 1, the heat exchanger 10 includes a plurality of rows of parallel pipelines, a plurality of rows of pipelines near the windward side of the plurality of rows of pipelines are first heat exchange sections 11, and the other rows of pipelines of the plurality of rows of pipelines are second heat exchange sections 12; the number of rows of pipelines included in the first heat exchange section 11 can be determined according to factors such as wind speed and dust content in air, so as to ensure the cleanliness of condensed water generated on the second heat exchange section 12 and ensure the cleaning effect.
In this embodiment, the second water receiving portion 22 has a first opening 221; the wiper mechanism includes: a spray head 24, a spray end of the spray head 24 is arranged towards the heat exchanger 10; a first end of the first connection pipe 25 is connected with the second water receiving part 22, and a first end of the first connection pipe 25 is communicated with the second water receiving part 22 through a first opening 221; a second end of the first connection pipe 25 is connected to the shower head 24; and an infusion pump 26 provided on the first connection tube 25. In such an arrangement, the condensed water in the second water receiving portion 22 can be transported to the shower head 24 by the liquid transport pump 26, and the condensed water can be discharged through the first opening 221, the first connection pipe 25, and the shower head 24 in this order to clean the heat exchanger 10.
Optionally, the infusion pump 26 is a water pump.
In this embodiment, the cleaning mechanism further includes: and a filter 27 disposed on the first connection pipe 25, the filter 27 being located between the first end of the first connection pipe 25 and the infusion pump 26. Such an arrangement enables the condensed water to be filtered before entering the infusion pump, ensures the cleanness of the condensed water, avoids blocking the infusion pump 26 and the nozzle, and also improves the cleaning effect.
In the present embodiment, the second water receiving portion 22 has a second opening 222; the cleaning device further comprises: a second connection pipe 28, wherein the second connection pipe 28 is connected to the second water receiving part 22, and the second connection pipe 28 is communicated with the second water receiving part 22 through a second opening 222 so as to discharge the liquid and impurities in the second water receiving part 22; and a control valve 29 provided on the second connection pipe 28 to control on/off of the second connection pipe 28. Due to the arrangement, the sludge and the impurities can be discharged after the sludge and the impurities are deposited at the bottom of the second water receiving portion 22, so that the cleanness of the condensed water in the second water receiving portion 22 is ensured, and the heat exchanger 10 is convenient to clean.
Alternatively, the control valve 29 is a solenoid valve.
In this embodiment, as shown in fig. 2, the cleaning device includes a water receiving tray structure 30, the water receiving tray structure 30 has a first groove and a second groove, the first groove is a first water receiving portion 21, and the second groove is a second water receiving portion 22. The arrangement can realize the integrated design of the first water receiving part 21 and the second water receiving part 22, simplify the structure and reduce the occupied space.
In this embodiment, the water tray structure 30 further has a communication groove 31, a first end of the communication groove 31 is communicated with the first groove, and a second end of the communication groove 31 is communicated with the second groove, so that when the liquid in the second groove reaches a predetermined level, the liquid flows into the first groove through the communication groove 31 and is discharged from the discharge port 211. Due to the arrangement, when more condensed water is in the second groove, the condensed water can be discharged through the discharge port 211, and the condensed water is prevented from overflowing to pollute the environment.
Specifically, the groove bottom of the communication groove 31 becomes gradually higher in the direction from the second groove to the first groove.
In the present embodiment, as shown in fig. 3, the bottom of the heat exchanger 10 is provided with a shielding plate 40; the protection plate 40 is provided with a first through hole 41, and the first through hole 41 is arranged opposite to the first heat exchange section 11; and/or, a second through hole 42 is formed in the protection plate 40, and the second through hole 42 is arranged opposite to the second heat exchange section 12.
In specific implementation, the protection plate 40 plays a role in protecting the heat exchanger 10, and condensed water generated on the surface of the first heat exchange section 11 flows into the first water receiving part 21 through the first through hole 41; the condensed water generated on the surface of the second heat exchange section 12 flows into the second water receiving part 22 through the second through hole 42; the flow cross-sectional area of the first through hole 41 is larger than that of the second through hole 42, and the flow cross-sectional area of the first through hole 41 is larger, so that the dirt can be smoothly discharged into the first water receiving portion 21.
In this embodiment, at least part of the surface of the heat exchanger 10 is provided with a hydrophobic coating. This arrangement enables the condensed water to smoothly flow into the first water receiving portion 21 and the second water receiving portion 22.
Optionally, the spray end of spray head 24 is positioned toward first heat exchange section 11 to clean first heat exchange section 11. When the gas flows to the second heat exchange section 12, no dust exists in the gas, and no or less dirt is generated on the surface of the second heat exchange section 12, so that the cleaning mechanism only needs to clean the first heat exchange section 11.
Optionally, the spray end of spray head 24 is disposed toward first heat exchange section 11 and second heat exchange section 12 to clean heat exchanger 10 as a whole. The second connection pipe 28 and the control valve 29 are arranged to discharge the sludge deposited at the bottom of the second water receiving portion 22, so that when the spray head 24 is used to clean the heat exchanger 10 as a whole, the sludge and impurities cleaned from the second heat exchange section 12 can be discharged to ensure that the water used for circulating cleaning is clean.
In this embodiment, the cleaning device further includes a third connecting pipe 32, the third connecting pipe 32 is connected to the first water receiving portion 21, and the third connecting pipe 32 is communicated with the first water receiving portion 21 through a discharge port 211 to discharge the liquid and impurities in the first water receiving portion 21.
Specifically, the heat exchanger 10 is a finned heat exchanger including a plurality of fins 13, and the hydrophobic coating is disposed on the fins 13. The heat exchanger system also comprises a fan, when the low-temperature secondary refrigerant in the heat exchanger circulates, the fan is started, the gas flows through the heat exchanger, under the action of the hydrophobic coating and gravity, the condensed water and a small amount of sludge on the fins 13 of the first heat exchange section rapidly flow to the first through holes 41 along the fins 13 and fall into the first water receiving part 21, and finally the condensed water and the small amount of sludge are discharged from the discharge port 211; the condensed water on the second heat exchange section 12 rapidly flows to the second through holes 42 along the fins 13 and falls into the second water receiving portion 22, at this time, the control valve 29 is closed, after the condensed water in the second water receiving portion 22 reaches a predetermined liquid level, the condensed water flows into the first water receiving portion 21 and is discharged by the third connecting pipe 32, and the condensed water at the predetermined liquid level is used as circulating water for self-cleaning. When the low-temperature coolant in the heat exchanger 10 does not circulate, the fan is turned off, the water pump (i.e., the liquid delivery pump) is turned on, the condensed water in the second water receiving portion 22 flows to the spray head through the first connecting pipe, the filter and the water pump to be sprayed out, the sludge attached to the fins 13 of the first heat exchange section 11 is sprayed and cleaned, and the sprayed sludge falls to the first water receiving portion 21 and is discharged through the third connecting pipe.
The cleaning device of the heat exchanger system can store and utilize the heat exchanger to produce condensate water, regularly open and clear up the attached dirt on the surface of the heat exchanger fin, the surface of the fin can keep good clean degree, not only prevents the heat transfer performance attenuation of the heat exchanger, but also reduces the corrosion condition of the dirt to the fin and the pipeline, and greatly improves the stable operation reliability of the equipment. The self-cleaning device is used for cleaning the heat exchanger in a timed manner, manual maintenance is not needed, and maintenance cost and maintenance period are reduced; the application can solve the problem that the heat exchanger is corroded and scaled, and the heat transfer performance of the heat exchanger is attenuated and the post-sale use situation of equipment such as frequent manual maintenance is solved.
The utility model provides a guard plate of heat exchanger bottom adopts and leaks, leaks the design of mud hole (first through-hole and second through-hole promptly), and the mud dirt after the process is from the washing prolongs hydrophobic coating fin wall and can flow out fast, and the mud dirt can't form the clod and pile up, reduces and piles up the guard plate upside in the heat exchanger bottom because of the drainage is not smooth to lead to the mud dirt, causes further jam and corruption.
The water pan structure adopts a two-section design (namely the first groove and the second groove), so that sludge and condensed water can be separated and distributed and discharged, and condensed water which cannot be used as cleaning water enters the first groove; the cleaner condensed water can enter the second groove to be used as cleaning water, the water is recycled, the generated sludge can be discharged independently, a separating device is not required, and the effect of reducing the cost is achieved.
The utility model provides a heat exchanger fin adopts hydrophobic coating collocation guard plate to adopt hourglass water to leak mud structural design, guarantees to adhere to condensate water and the dirt on fin surface and can just smoothly flow out fast, and the bottom water collector adopts unique two segmentation water collector designs simultaneously, can be easily with dirt and the separation of condensate water discharge, guarantees that the water yield and the cleanliness factor in the second water collector can satisfy the water cyclic utilization of self-cleaning, rethread water pump drive circulating water mode, regularly washs the heat exchanger.
The invention also provides a cleaning method of a heat exchanger, please refer to fig. 4, the cleaning method of the heat exchanger is suitable for the heat exchanger in the above embodiment, and the cleaning method of the heat exchanger includes: and detecting the running state of the heat exchanger 10, and controlling a cleaning mechanism of the cleaning device to clean the heat exchanger 10 when detecting that the heat exchanger 10 is in a stop state. During specific implementation, the cleaning mechanism can be controlled to automatically clean the heat exchanger 10 by judging whether the heat exchanger is in a working state or a shutdown state, so that the heat exchanger 10 can be conveniently cleaned.
Specifically, when the heat exchanger is in an operating state, the cleaning mechanism does not work.
Specifically, the operation state of the heat exchanger 10 is detected as the operation state of the fan, and when the fan is detected to be in the working state, the cleaning mechanism does not work; and when the fan is detected to be in a stop state, controlling a cleaning mechanism to clean the heat exchanger 10. Wherein, the control of the cleaning mechanism to clean the heat exchanger 10 is to control the infusion pump to start.
In this embodiment, the method for cleaning the heat exchanger includes: and detecting the working time of the heat exchanger 10, and controlling the second control valve 29 to be opened after the working time of the heat exchanger 10 reaches a first preset time.
In this embodiment, the method for cleaning the heat exchanger includes: the open period of the control valve 29 is detected and the control valve 29 is controlled to close after detecting that the control valve 29 is continuously open for a second preset period.
In specific implementation, the time length for detecting that the heat exchanger 10 is in the working state reaches a first preset time length is the time length for detecting that the fan is in the working state reaches the first preset time length; in order to prevent a small amount of sludge from being mixed in the second water receiving portion 22, the settled sludge needs to be discharged periodically to ensure that no impurities are mixed in the self-cleaning water source, a first preset time and a second preset time are set in the control of the control valve 29 respectively, the first preset time can ensure that the second water receiving portion 22 is full of liquid, when the running time of the fan is greater than or equal to the first preset time, the control valve 29 is opened, the settled sludge is discharged along the second connecting pipe, and when the control valve 29 is opened, the control valve is automatically closed.
In the present embodiment, the method of controlling the cleaning mechanism of the cleaning apparatus to clean the heat exchanger 10 includes: and controlling the washing mechanism to stop running after detecting that the running time of the washing mechanism reaches a third preset time or the infusion pump 26 idles.
In specific implementation, the detection that the operation time of the cleaning mechanism reaches the third preset time is the detection that the operation time of the water pump (namely, the infusion pump) reaches the third preset time. And after the operation time reaches a third preset time or the water pump is detected to idle, stopping the water pump, and finishing the cleaning.
According to the cleaning method of the heat exchanger, the water pump is controlled to be started for spray cleaning by judging the starting and stopping of the fan, the heat exchanger is guaranteed to be timely and regularly cleaned, the control commands of periodical pollution discharge and water collection are realized, and the cleaning device is enabled to operate reliably.
In other embodiments, the second water receiving part of the cleaning device is changed into an independent part, and the supply of the spray-washing circulating water is ensured by periodically supplementing water.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the heat exchanger system comprises a heat exchanger 10 and a cleaning device, wherein the cleaning device comprises a first water receiving part 21, a second water receiving part 22 and a cleaning mechanism, the cleaning device receives condensed water generated by a second heat exchange section 12 through the second water receiving part 22, the condensed water of the second water receiving part 22 is used for cleaning the heat exchanger 10 through the cleaning mechanism, the heat exchanger 10 can continuously generate the condensed water in the operation process, and the reliability of cleaning the heat exchanger 10 is ensured; moreover, because the first heat exchange section 11 is located on the windward side, when the gas with dust contacts the first heat exchange section 11, the condensed water and dust generated on the surface of the first heat exchange section 11 are mixed and flow into the first water receiving portion 21, and the mixed liquid of the condensed water and the dust in the first water receiving portion 21 cannot be used for cleaning the heat exchanger 10, so that the mixed liquid is discharged through the discharge port 211; when the gas flows to the second heat exchange section 12, no dust is in the gas, and only condensed water is generated on the surface of the second heat exchange section 12, and the condensed water can be used for cleaning the heat exchanger. Therefore, the cleaning device can respectively treat the condensed water which is generated by the heat exchanger 10 and can be used for cleaning and the condensed water with impurities, so that the heat exchanger 10 can be automatically and effectively cleaned without manual intervention, and the cleaning effect is good; in addition, the cleaning device utilizes the condensed water continuously generated by the second heat exchange section 12 to clean the heat exchanger 10, so that the reliability is high; the cleaning device in the heat exchanger system solves the problem that the heat exchanger 10 is inconvenient to clean.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A heat exchanger system, comprising:
the heat exchanger (10) comprises a first heat exchange section (11) and a second heat exchange section (12), so that heat exchange gas sequentially passes through the first heat exchange section (11) and the second heat exchange section (12);
the cleaning device comprises a first water receiving part (21), a second water receiving part (22) and a cleaning mechanism, the first water receiving part (21) is positioned below the first heat exchange section (11), and the first water receiving part (21) is provided with a discharge port (211); the second water receiving part (22) is positioned below the second heat exchange section (12); the cleaning mechanism is communicated with the second water receiving part (22) so that the cleaning mechanism can use the condensed water in the second water receiving part (22) for cleaning the heat exchanger (10).
2. A heat exchanger system according to claim 1, wherein the second water receiving portion (22) has a first opening (221); the cleaning mechanism includes:
a spray head (24), wherein the spray end of the spray head (24) is arranged towards the heat exchanger (10);
a first connecting pipe (25), wherein a first end of the first connecting pipe (25) is connected with the second water receiving part (22), and a first end of the first connecting pipe (25) is communicated with the second water receiving part (22) through the first opening (221); the second end of the first connecting pipe (25) is connected with the spray head (24);
and an infusion pump (26) arranged on the first connection tube (25).
3. The heat exchanger system of claim 2, wherein the purge mechanism further comprises:
a filter (27) disposed on the first connection tube (25), the filter (27) being located between a first end of the first connection tube (25) and the infusion pump (26).
4. A heat exchanger system according to any one of claims 1 to 3, wherein the second water receiving portion (22) has a second opening (222); the cleaning device further comprises:
the second connecting pipe (28) is connected with the second water receiving part (22), and the second connecting pipe (28) is communicated with the second water receiving part (22) through the second opening (222) so as to discharge liquid and impurities in the second water receiving part (22);
and the control valve (29) is arranged on the second connecting pipe (28) to control the on-off of the second connecting pipe (28).
5. A heat exchanger system according to any one of claims 1 to 3, wherein the cleaning device comprises a water-tray structure (30), the water-tray structure (30) having a first recess being the first water-receiving portion (21) and a second recess being the second water-receiving portion (22).
6. The heat exchanger system according to claim 5, wherein the water tray structure (30) further has a communication groove (31), a first end of the communication groove (31) communicating with the first recess, and a second end of the communication groove (31) communicating with the second recess, so that when the liquid in the second recess reaches a predetermined level, the liquid flows into the first recess through the communication groove (31) and is discharged from the discharge port (211).
7. The heat exchanger system according to any one of claims 1 to 3, wherein the bottom of the heat exchanger (10) is provided with a shielding plate (40);
a first through hole (41) is formed in the protection plate (40), and the first through hole (41) is opposite to the first heat exchange section (11); and/or
And a second through hole (42) is formed in the protection plate (40), and the second through hole (42) and the second heat exchange section (12) are arranged oppositely.
8. The heat exchanger system according to any one of claims 1 to 3, wherein at least a part of the surface of the heat exchanger (10) is provided with a hydrophobic coating.
9. The heat exchanger system of claim 1, wherein the cleaning mechanism comprises a spray head (24), a spray end of the spray head (24) being disposed toward the first heat exchange section (11) to clean the first heat exchange section (11).
10. A cleaning method for a heat exchanger, characterized by comprising:
and detecting the running state of the heat exchanger (10), and controlling a cleaning mechanism of a cleaning device to clean the heat exchanger (10) when detecting that the heat exchanger (10) is in a shutdown state.
11. The cleaning method of a heat exchanger according to claim 10, comprising:
and detecting the time length of the heat exchanger (10) in the working state, and controlling a second control valve (29) to be opened after the time length of the heat exchanger (10) in the working state reaches a first preset time length.
12. The cleaning method of a heat exchanger according to claim 11, comprising:
and detecting the opening time of the control valve (29), and controlling the control valve (29) to be closed after detecting that the control valve (29) is continuously opened for a second preset time.
13. The method for cleaning a heat exchanger according to claim 10, wherein the method for controlling the cleaning mechanism of the cleaning device to clean the heat exchanger (10) comprises the steps of:
and controlling the cleaning mechanism to stop running after detecting that the running time of the cleaning mechanism reaches a third preset time or the infusion pump (26) idles.
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| CN114034203B (en) | 2023-07-18 |
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