CN216346518U - Heat exchange system for cleaning heat exchanger without stopping machine - Google Patents
Heat exchange system for cleaning heat exchanger without stopping machine Download PDFInfo
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- CN216346518U CN216346518U CN202123179296.2U CN202123179296U CN216346518U CN 216346518 U CN216346518 U CN 216346518U CN 202123179296 U CN202123179296 U CN 202123179296U CN 216346518 U CN216346518 U CN 216346518U
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Abstract
The utility model discloses a heat exchange system for cleaning a heat exchanger without stopping the machine, which comprises a plate heat exchanger, a primary network system and a secondary network system, wherein the primary network system comprises a primary network boiler, a primary water supply pipeline, a primary water return pipeline, a primary side inlet valve of the plate heat exchanger and a primary side outlet valve of the plate heat exchanger; the secondary network system comprises a circulating pump, a user, a secondary water supply pipeline, a secondary water return pipeline, a plate heat exchanger secondary side outlet valve, a plate heat exchanger secondary side inlet valve and a secondary water supply and return bypass valve; the plate heat exchanger can be flushed and maintained without stopping, so that inconvenience brought to life of people due to stopping is avoided, and the living comfort of people is greatly improved; the heat utilization rate of the primary network system can be improved, the energy loss is reduced, more energy is saved, and the national call for energy conservation and emission reduction is positively responded; the flow is accurately controlled through the electric regulating valve, and the stability of the system is greatly ensured.
Description
Technical Field
The utility model relates to the technical field of plate heat exchangers, in particular to a heat exchange system for cleaning a heat exchanger without stopping.
Background
People have higher and higher requirements on heat supply, and the traditional rugged heat supply mode cannot meet the market demand. The centralized heating rapidly takes a leading position in the heating market due to the advantages of high efficiency, easy maintenance and the like. The central heating system consists of three parts, namely a heat source, a heat exchange station and a user, wherein the heat exchange station is used as a connecting bridge between the heat source and the user and plays an important role in the central heating system.
The heat exchange station is composed of a plate type heat exchange unit and a peripheral pipeline, wherein the plate type heat exchanger is used as a core component and plays a decisive role in the function of the heat exchange station.
The plate heat exchanger is a heat exchange device with compact structure and high efficiency, has the characteristics of high heat exchange efficiency (the heat transfer coefficient of the plate heat exchanger is 3-5 times higher than that of the tube heat exchanger), small occupied area (1/3 of the tube heat exchanger), long service life, low investment, easiness in descaling, reliability, durability and the like, is widely applied to industries such as metallurgy, petroleum, pharmacy, ships, textile, chemical industry, medicines, food and the like in recent years, and is excellent equipment for realizing the purposes of heating, cooling, heat recovery, quick sterilization and the like.
In recent decades, central heating has become more and more widespread in areas where it is used in our country. With the development of society, the pursuit of people for the quality of life is continuously improved, and the requirement for indoor comfort degree is higher and higher. Therefore, the stability of the heating system is important. However, the plate heat exchanger is generally high in heat exchange temperature (especially steam-water exchange) and high in heat exchange efficiency, so that scaling is easy to occur. Meanwhile, the inside circulation aperture of the plate heat exchanger is small, the cross section of an internal channel is reduced or even blocked after scaling, and the heat exchange efficiency of the plate heat exchanger is reduced, so that the normal production and the safety of equipment are influenced. The existing descaling mode can only stop the heat exchanger unit, and the heat exchanger unit is started to operate after descaling, so that the stability of a heating system is seriously influenced, and the living comfort of people is influenced.
Therefore, the utility model provides a heat exchange system for cleaning a heat exchanger without stopping, so as to ensure the high-efficiency heat exchange of a heat exchange unit and the normal operation of production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a heat exchange system for cleaning a heat exchanger without stopping to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a heat exchange system for cleaning a heat exchanger without stopping comprises a plate heat exchanger, a primary network system and a secondary network system, wherein the primary network system comprises a primary network boiler, a primary water supply pipeline, a primary water return pipeline, a primary side inlet valve of the plate heat exchanger and a primary side outlet valve of the plate heat exchanger; an outlet valve at the primary side of the plate heat exchanger is arranged on a primary water return pipeline; the primary side inlet valve of the plate heat exchanger is arranged on a primary water supply pipeline; the secondary network system comprises a circulating pump, a user, a secondary water supply pipeline, a secondary water return pipeline, a plate heat exchanger secondary side outlet valve, a plate heat exchanger secondary side inlet valve and a secondary water supply and return bypass valve; the circulating pump is arranged on the secondary water return pipeline, and the secondary water supply and return bypass valve is arranged on a pipeline which is connected with the secondary water return pipeline and the secondary water supply pipeline in series.
Furthermore, an electric regulating valve I is arranged on a communicating pipeline of the primary water supply pipeline and the secondary water supply pipeline.
Furthermore, an electric regulating valve II is arranged on a communicating pipeline of the primary water return pipeline and the secondary water return pipeline.
Further, the transmission medium of the primary net system is high-temperature hot water.
Further, the transmission medium of the secondary network system is low-temperature hot water.
The utility model has the beneficial effects that:
(1) the plate heat exchanger can be flushed and maintained without stopping, so that inconvenience brought to life of people due to stopping is avoided, and the living comfort of people is greatly improved;
(2) the system can improve the heat utilization rate of the primary network system, reduce energy loss, save more energy and actively correspond to national calls for energy conservation and emission reduction.
(3) This system comes accurate control flow through electrical control valve, has greatly guaranteed the stability of system.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: the system comprises a plate type heat exchanger 1, a circulating water pump 2, a primary net boiler 3, a user 4, a plate type heat exchanger primary side inlet valve 5, a plate type heat exchanger secondary side outlet valve 6, a plate type heat exchanger primary side outlet valve 7, a plate type heat exchanger secondary side inlet valve 8, an electric control valve I9, an electric control valve II 10, a secondary side water supply and return bypass valve 11, a primary water supply pipeline 12, a secondary water supply pipeline 13, a primary water return pipeline 14 and a secondary water return pipeline 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1 a heat exchange system for cleaning a heat exchanger without stopping a machine, the structure of which is shown in fig. 1, comprises a plate heat exchanger 1, a primary network system and a secondary network system, wherein the primary network system comprises a primary network boiler 3, a primary water supply pipeline 12, a primary water return pipeline 14, a primary side inlet valve 5 of the plate heat exchanger and a primary side outlet valve 7 of the plate heat exchanger; an outlet valve 7 at the primary side of the plate heat exchanger is arranged on a primary water return pipeline 14; the primary side inlet valve 5 of the plate heat exchanger is arranged on a primary water supply pipeline 12; the transmission medium of the primary net system is high-temperature hot water.
The secondary network system comprises a circulating pump 2, users 4, a secondary water supply pipeline 13, a secondary water return pipeline 15, a plate heat exchanger secondary side outlet valve 6, a plate heat exchanger secondary side inlet valve 8 and a secondary water supply and return bypass valve 11; the circulating pump 2 is arranged on a secondary water return pipeline 15, and the secondary water supply and return bypass valve 11 is arranged on a pipeline which is connected in series with the secondary water return pipeline 15 and the secondary water supply pipeline 13. The transmission medium of the secondary network system is low-temperature hot water.
Specifically, a first electric control valve 9 is arranged on a communication pipeline of the primary water supply pipeline 12 and the secondary water supply pipeline 13. And a second electric regulating valve 10 is arranged on a communicating pipeline of the primary water return pipeline 14 and the secondary water return pipeline 15.
The heat exchange process of the system is as follows: the primary net system medium is high-temperature hot water, the high-temperature hot water is connected to a primary side inlet valve 5 of the plate heat exchanger through a primary water supply pipeline 12 by a primary net boiler 3, the primary side inlet valve 5 of the plate heat exchanger is connected with the plate heat exchanger 1 through a pipeline, heat exchange is carried out between the primary side inlet valve 5 and the secondary side medium low-temperature hot water at the plate heat exchanger 1, and then the high-temperature hot water flows back to the primary net boiler 3 through a primary water return pipeline 14. The secondary network system is low-temperature hot water, the low-temperature hot water exchanges heat with high-temperature hot water at the plate heat exchanger 1, flows to a user 4 through a secondary water supply pipeline 13, and then flows back to the plate heat exchanger 1 through the circulating pump 2 to continue circulating. The secondary side bypass valve 11 is in a closed state at this time.
The cleaning principle without stopping the machine of the system is as follows: when incrustation scale blockage occurs to the plate heat exchanger 1 in the heating period and the heat exchange effect is affected, the inlet and outlet valves (5, 6, 7 and 8) of the primary side and the secondary side of the plate heat exchanger are closed, the first electric regulating valve 9 and the second electric regulating valve 10 are opened, and the secondary side water supply and return bypass valve 11 is opened. At this time, the whole system becomes: one part of the medium high-temperature hot water in the primary water supply pipeline 12 directly flows into the secondary water supply pipeline 13; part of the medium low-temperature hot water in the secondary water return pipeline 15 flows into the secondary water supply pipeline 13 through the secondary network water supply and return bypass valve 11, and part of the medium low-temperature hot water flows into the primary water return pipeline 14 through the second electric regulating valve 10. At the moment, the whole system becomes a water mixing system, and the mixing amount of the high-temperature water and the low-temperature water is adjusted by monitoring the secondary water supply and return temperature through an electric adjusting valve. This system makes heat utilization more efficient. The plate heat exchanger can be flushed and maintained without stopping the machine.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A heat exchange system for cleaning a heat exchanger without stopping machine comprises a plate heat exchanger (1), a primary net system and a secondary net system, and is characterized in that the primary net system comprises a primary net boiler (3), a primary water supply pipeline (12), a primary water return pipeline (14), a primary side inlet valve (5) of the plate heat exchanger and a primary side outlet valve (7) of the plate heat exchanger; the primary side outlet valve (7) of the plate heat exchanger is arranged on the primary water return pipeline (14); the primary side inlet valve (5) of the plate heat exchanger is arranged on the primary water supply pipeline (12); the secondary network system comprises a circulating pump (2), a user (4), a secondary water supply pipeline (13), a secondary water return pipeline (15), a plate heat exchanger secondary side outlet valve (6), a plate heat exchanger secondary side inlet valve (8) and a secondary water supply and return bypass valve (11); the circulating pump (2) is arranged on the secondary water return pipeline (15), and the secondary water supply and return bypass valve (11) is arranged on a pipeline which is connected with the secondary water return pipeline (15) and the secondary water supply pipeline (13) in series.
2. The heat exchange system for cleaning the heat exchanger without stopping the machine as claimed in claim 1, wherein a first electric regulating valve (9) is arranged on a communication pipeline of the primary water supply pipeline (12) and the secondary water supply pipeline (13).
3. The heat exchange system for cleaning the heat exchanger without stopping the machine as claimed in claim 1, wherein a second electric regulating valve (10) is arranged on a communicating pipeline of the primary water return pipeline (14) and the secondary water return pipeline (15).
4. The heat exchange system for cleaning the heat exchanger without stopping the machine as claimed in claim 1, wherein the transmission medium of the primary net system is high-temperature hot water.
5. The heat exchange system for cleaning the heat exchanger without stopping the machine as claimed in claim 1, wherein the transmission medium of the secondary network system is low-temperature hot water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123179296.2U CN216346518U (en) | 2021-12-17 | 2021-12-17 | Heat exchange system for cleaning heat exchanger without stopping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123179296.2U CN216346518U (en) | 2021-12-17 | 2021-12-17 | Heat exchange system for cleaning heat exchanger without stopping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216346518U true CN216346518U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123179296.2U Active CN216346518U (en) | 2021-12-17 | 2021-12-17 | Heat exchange system for cleaning heat exchanger without stopping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216346518U (en) |
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2021
- 2021-12-17 CN CN202123179296.2U patent/CN216346518U/en active Active
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