Pure water heating system utilizing multi-element energy

Abstract

The utility model provides a pure water heating system utilizing multi-element energy, which comprises a first heat preservation water tank, a second heat preservation water tank, a first plate heat exchanger, a first circulating water pump group, a second circulating water pump group, a third circulating water pump group, a first conveying water pump group, a second conveying water pump group and a water source heat pump group, a two-stage heating water storage unit is formed by the first heat preservation water tank and the second heat preservation water tank, double-temperature can be independently supplied, stable medium-temperature water is directly output through the first conveying pump set, and stable high-temperature water is output through the second conveying pump set. Air compression waste heat is recycled, waste heat of an air compressor is used for conducting primary pure water preheating, meanwhile, a heat source of an external cooling water tank is used for conducting secondary heating to obtain high-temperature water, multiple energy sources are fully utilized, gradient utilization is achieved, and energy consumption is reduced; the capacity of the first heat preservation water tank is smaller than that of the second heat preservation water tank.

Description

Technical Field

[0001] This utility model relates to the field of integrated energy technology, and more specifically, to a pure water heating system that utilizes multiple energy sources. Background Technology

[0002] In precision industrial fields such as semiconductor manufacturing and solar cell production, pure water serves as a critical process medium, and its temperature control directly impacts product quality and production efficiency. Taking silicon substrate cleaning as an example, pure water needs to be maintained at a constant temperature of 80°C to avoid metal ion contamination, while simultaneously meeting the temperature sensitivity of RO membrane water production efficiency. Traditional pure water heating methods employ electric heating, which uses a heating wire combined with a non-metallic protective sleeve. Although this avoids the risk of metal contamination, prolonged exposure to high temperatures can easily lead to aging and cracking of the protective sleeve. Furthermore, heat transfer efficiency is limited by the insulation layer, resulting in high energy consumption and frequent maintenance.

[0003] The closest existing pure water heating system to this application is application publication number CN103017578A, which discloses a pure water heating system comprising: a plate heat exchanger, a pure water inlet pipe, a pure water outlet pipe, a steam inlet pipe, and a cooling water outlet pipe; wherein the pure water inlet pipe is connected to the inlet of the plate heat exchanger; the pure water outlet pipe is connected to the outlet of the plate heat exchanger; the steam inlet pipe is connected to the inlet of the plate heat exchanger; and the cooling water outlet pipe is connected to the cooling water outlet of the plate heat exchanger.

[0004] The existing technology introduces plate heat exchangers to replace electric heating. The heat exchange between steam and pure water significantly improves thermal efficiency and equipment durability. However, the single heat source mode still has the problem of insufficient utilization of energy grade, and can only provide pure water at one temperature, which cannot flexibly provide pure water at multiple temperatures, resulting in poor system adaptability.

[0005] Therefore, how to construct an efficient, stable pure water heating system that can utilize multiple energy sources has become an urgent problem to be solved in the field of industrial energy conservation. Utility Model Content

[0006] This invention proposes a highly adaptable and energy-efficient pure water heating system that utilizes multiple energy sources.

[0007] A pure water heating system utilizing multiple energy sources includes a first insulated water tank 1, a second insulated water tank 2, a first plate heat exchanger 3, a first circulating water pump group 4, a second circulating water pump group 5, a third circulating water pump group 6, a first delivery water pump group 7, a second delivery water pump group 8, and a water source heat pump group 12. The system is characterized in that: an external pure water inlet 9 is connected to the first insulated water tank 1 via a pipe; the first insulated water tank 1 is connected to the input end of the first heat exchange system 31 of the first plate heat exchanger 3 via the first circulating water pump group 4; the output end of the first heat exchange system 31 of the first plate heat exchanger 3 is connected to the first insulated water tank 1 via a pipe; and the second heat exchange system 32 of the first plate heat exchanger 3 is connected to the external air source heat pump group 12. The pressure heat recovery equipment 10 is connected. The first insulated water tank 1 is connected to the external workshop medium-temperature water supply port 11 and the second insulated water tank 2 through the first conveying water pump group 7. The second insulated water tank 2 is connected to the input end of one end of the water source heat pump group 12 through the second circulating water pump group 5. The output end of one end of the water source heat pump group 12 is connected to the second insulated water tank 2 through a pipe. The output end of the external cooling water tank 13 is connected to the input end of the other end of the water source heat pump group 12 through the third circulating water pump group 6. The output end of the other end of the water source heat pump group 12 is connected to the input end of the external cooling water tank 13 through a pipe. The second insulated water tank 2 is connected to the external workshop high-temperature water supply port 14 through the second conveying water pump group 8.

[0008] Furthermore, a first butterfly valve 15 is provided on the pipes connecting the first insulated water tank 1 to the external pure water outlet 9 and near the first insulated water tank 1, the pipes connecting the first insulated water tank 1 to the first circulating water pump group 4 and near the first insulated water tank 1, the pipes connecting the first insulated water tank 1 to the first delivery water pump group 7 and near the first insulated water tank 1, and the pipes connecting the first insulated water tank 1 to the output end of the first heat exchange system 31 of the first plate heat exchanger 3 and near the first insulated water tank 1. The first butterfly valve 15 is used to control the opening and closing of the output and input pipes of the first insulated water tank 1.

[0009] In some embodiments, a first temperature sensor 17 is also provided between the input end of the first heat exchange system 31 of the first circulating water pump group 4 and the first plate heat exchanger 3. The first temperature sensor 17 is used to monitor the output pipe temperature of the first circulating water pump group 4.

[0010] In some embodiments, a first bypass pipe 16 is connected between the output end of the first heat exchange system 31 of the first plate heat exchanger 3 and the input end of the first heat exchange system 31 of the first plate heat exchanger 3. A second butterfly valve 161 is provided on the first bypass pipe 16. The second butterfly valve 161 is used to control the opening and closing of the first bypass pipe 16. When there is a pipeline fault or maintenance of the first heat exchange system 31 of the first plate heat exchanger 3, the first bypass pipe 16 is opened; or when the first temperature sensor 17 detects that the output pipeline temperature of the first circulating water pump group 4 is too high, the first bypass pipe 16 is opened to prevent the first plate heat exchanger 3 from being damaged by excessive temperature.

[0011] In some embodiments, the first circulating water pump group 4 and the second circulating water pump group 5 have the same structure. The first circulating water pump group 4 includes at least two circulating water pump assemblies 41, each of which is configured as one in use and one as a standby. Each circulating water pump assembly 41 includes a first water supply pipe 42. The first insulated water tank 1 is connected to the input end of the first heat exchange system 31 of the first plate heat exchanger 3 through the first water supply pipe 42. The first water supply pipe 42 is provided with a third butterfly valve 421, a first check valve 422, a first pressure gauge 423, and a first reducer 424 from left to right. The first variable frequency water pump 425, the second reducer 426, the first Y-type filter 427, the fourth butterfly valve 428, the third butterfly valve 421, and the fourth butterfly valve 428 are used to control the opening and closing of the pipeline. The first check valve 422 is used to prevent the backflow of water at the plate heat exchanger end. The first pressure gauge 423 is used to monitor the pipeline pressure. The side of the first Y-type filter 427 is also connected to a second bypass pipe 4271. The second bypass pipe 4271 is equipped with a second pressure gauge 4272, which is used to display the pressure difference before and after the first Y-type filter 427.

[0012] In some embodiments, the first water pump group 7 and the second water pump group 8 have the same structure. The first water pump group 7 includes at least two water pump assemblies 71, each water pump assembly 71 is configured with one in use and one as a standby. Each water pump assembly 71 includes a second water supply pipe 72. The first insulated water tank 1 is connected to the external workshop medium-temperature water supply port 11 and the second insulated water tank 2 respectively through the second water supply pipe 72. The second water supply pipe 72 is provided with a fifth butterfly valve 721, a second Y-type filter 722, a third reducer 723, and a second variable frequency water pump 724 from left to right. The fourth reducer 725, the third pressure gauge 726, the second check valve 727, the sixth butterfly valve 728, the fifth butterfly valve 721, and the sixth butterfly valve 728 are used to control the opening and closing of the pipeline. The second check valve 727 is used to prevent the backflow of water output from the second variable frequency water pump 724. The third pressure gauge 726 is used to monitor the pipeline pressure. The side of the second Y-type filter 722 is also connected to the third bypass pipe 7221. The third bypass pipe 7221 is equipped with a fourth pressure gauge 7222, which is used to display the pressure difference before and after the second Y-type filter 722.

[0013] In some embodiments, the capacity of the first insulated water tank 1 is smaller than that of the second insulated water tank 2. More preferably, the capacity of the second insulated water tank 2 is 1.5 to 2 times larger. This is because, firstly, if the first water tank is too large, the high-temperature water will dissipate heat to the environment through the tank wall during storage, resulting in a reduction in the actual usable heat energy; secondly, the demand for high-temperature water in the workshop is characterized by sudden changes and large instantaneous flow rates, and a larger capacity second water tank can reduce the frequent start-stop of the water source heat pump; and thirdly, the heat loss rate of high-temperature water is higher during transportation, requiring a larger capacity to maintain a stable terminal water temperature.

[0014] In some embodiments, a fifth pressure gauge 311, a first thermometer 312, a first electric valve 313, and a seventh butterfly valve 314 are arranged sequentially from left to right on the side of the output end of the first heat exchange system 31 of the first plate heat exchanger 3. The fifth pressure gauge 311 and the first thermometer 312 are used to monitor the temperature and pressure at the output end of the first heat exchange system 31 of the first plate heat exchanger 3. The first electric valve 313 is used to regulate the flow rate in the pipeline. The seventh butterfly valve 314 is used to control the opening and closing of the output end of the first heat exchange system 31 of the first plate heat exchanger 3.

[0015] The working principle of this utility model:

[0016] (1) Energy input stage:

[0017] Air compressor waste heat recovery: The 60-80℃ waste heat emitted by the external air compressor heat recovery equipment heats the circulating pure water through the first plate heat exchanger, realizing heat conversion and changing the pure water from 7℃-9℃ to 20-30℃ usable medium-temperature water.

[0018] Water source heat pump supplementary heating: Utilizing the temperature difference between the cooling water tank (20-30℃) and the second water tank, the water temperature is raised to 80-95℃ through evaporation and condensation of the water source heat pump.

[0019] (2) Stage heating phase:

[0020] Primary heating, also known as medium-temperature preparation: Pure water at 7℃-9℃ from external pure water inlet 9 sequentially enters the first water tank, the first circulating pump, and the plate heat exchanger, where it undergoes heat exchange and heating before returning to the first water tank.

[0021] Secondary heating, or high-temperature preparation: The medium-temperature water after primary heating in the first water tank sequentially enters the second water tank, the second circulation pump, and the water source heat pump, where it undergoes heat exchange and heating before returning to the second water tank.

[0022] The beneficial effects of this utility model are as follows: This utility model proposes a pure water heating system utilizing multiple energy sources, including a first insulated water tank 1, a second insulated water tank 2, a first plate heat exchanger 3, a first circulating water pump group 4, a second circulating water pump group 5, a third circulating water pump group 6, a first delivery water pump group 7, a second delivery water pump group 8, and a water source heat pump group 12. The first insulated water tank 1 and the second insulated water tank 2 form a two-stage heating and water storage unit, which can independently supply dual temperatures. The first delivery pump group directly outputs stable medium-temperature water, and the second delivery pump group 8 outputs stable high-temperature water. Waste heat recovery from the air compressor utilizes the waste heat of the air compressor for primary pure water preheating, while the heat source of the external cooling water tank 13 is used for secondary heating to obtain high-temperature water. This fully utilizes multiple energy sources and uses them in a tiered manner to reduce energy consumption. The capacity of the first insulated water tank 1 is smaller than that of the second insulated water tank 2, which can mitigate the impact of increased load. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a pure water heating system utilizing multiple energy sources according to this application.

[0024] Figure 2 This is a partially enlarged structural diagram of the connection between the first circulating water pump group and the first plate heat exchanger in a pure water heating system utilizing multiple energy sources according to this application.

[0025] Figure 3 This is a partially enlarged schematic diagram of the connection between the first insulated water tank and the first delivery water pump group in a pure water heating system utilizing multiple energy sources according to this application.

[0026] Explanation of key component symbols:

[0027] First insulated water tank 1, Second insulated water tank 2, First plate heat exchanger 3, First heat exchange system 31, Fifth pressure gauge 311, First thermometer 312, First electric valve 313, Seventh butterfly valve 314, Second heat exchange system 32, First circulating water pump group 4, Circulating water pump assembly 41, First water supply pipe 42, Third butterfly valve 421, First check valve 422, First pressure gauge 423, First reducer 424, First variable frequency water pump 425, Second reducer 426, First Y-type filter 427, Second bypass pipe 4271, Second pressure gauge 4272, Fourth butterfly valve 428, Second circulating water pump group 5, Third circulating water pump group 6, First water supply... 7. Water pump assembly 71. Water delivery pump assembly 72. Second water delivery pipe 72. Fifth butterfly valve 721. Second Y-type filter 722. Third bypass pipe 7221. Fourth pressure gauge 7222. Third reducer 723. Second variable frequency water pump 724. Fourth reducer 725. Third pressure gauge 726. Second check valve 727. Sixth butterfly valve 728. Second water delivery pump assembly 8. External pure water inlet 9. External compressed air heat recovery equipment 10. External workshop medium temperature water supply inlet 11. Water source heat pump assembly 12. External cooling water tank 13. External workshop high temperature water supply inlet 14. First butterfly valve 15. First bypass pipe 16. Second butterfly valve 161. First temperature sensor 17.

[0028] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0029] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0030] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0031] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0032] like Figure 1 The diagram shown is a schematic representation of the overall structure of a pure water heating system utilizing multiple energy sources according to this application; Figure 2The diagram shown is a partially enlarged structural schematic of the connection between the first circulating water pump unit and the first plate heat exchanger in a pure water heating system utilizing multiple energy sources according to this application; Figure 3 The diagram shown is a partially enlarged structural schematic of the connection between the first insulated water tank and the first delivery water pump group in a pure water heating system utilizing multiple energy sources according to this application.

[0033] A pure water heating system utilizing multiple energy sources includes a first insulated water tank 1, a second insulated water tank 2, a first plate heat exchanger 3, a first circulating water pump group 4, a second circulating water pump group 5, a third circulating water pump group 6, a first delivery water pump group 7, a second delivery water pump group 8, and a water source heat pump group 12. The system is characterized in that: an external pure water inlet 9 is connected to the first insulated water tank 1 via a pipe; the first insulated water tank 1 is connected to the input end of the first heat exchange system 31 of the first plate heat exchanger 3 via the first circulating water pump group 4; the output end of the first heat exchange system 31 of the first plate heat exchanger 3 is connected to the first insulated water tank 1 via a pipe; and the second heat exchange system 32 of the first plate heat exchanger 3 is connected to the external air source heat pump group 12. The pressure heat recovery equipment 10 is connected. The first insulated water tank 1 is connected to the external workshop medium-temperature water supply port 11 and the second insulated water tank 2 through the first conveying water pump group 7. The second insulated water tank 2 is connected to the input end of one end of the water source heat pump group 12 through the second circulating water pump group 5. The output end of one end of the water source heat pump group 12 is connected to the second insulated water tank 2 through a pipe. The output end of the external cooling water tank 13 is connected to the input end of the other end of the water source heat pump group 12 through the third circulating water pump group 6. The output end of the other end of the water source heat pump group 12 is connected to the input end of the external cooling water tank 13 through a pipe. The second insulated water tank 2 is connected to the external workshop high-temperature water supply port 14 through the second conveying water pump group 8.

[0034] A first butterfly valve 15 is provided on the pipes connecting the first insulated water tank 1 to the external pure water outlet 9 and near the first insulated water tank 1, the pipes connecting the first insulated water tank 1 to the first circulating water pump group 4 and near the first insulated water tank 1, the pipes connecting the first insulated water tank 1 to the first delivery water pump group 7 and near the first insulated water tank 1, and the pipes connecting the first insulated water tank 1 to the output end of the first heat exchange system 31 of the first plate heat exchanger 3 and near the first insulated water tank 1. The first butterfly valve 15 is used to control the opening and closing of the output and input pipes of the first insulated water tank 1.

[0035] A first temperature sensor 17 is also provided between the input end of the first heat exchange system 31 of the first circulating water pump group 4 and the first plate heat exchanger 3. The first temperature sensor 17 is used to monitor the output pipe temperature of the first circulating water pump group 4.

[0036] A first bypass pipe 16 is also connected between the output end of the first heat exchange system 31 of the first plate heat exchanger 3 and the input end of the first heat exchange system 31 of the first plate heat exchanger 3. A second butterfly valve 161 is provided on the first bypass pipe 16. The second butterfly valve 161 is used to control the opening and closing of the first bypass pipe 16. When there is a pipeline fault or maintenance of the first heat exchange system 31 of the first plate heat exchanger 3, the first bypass pipe 16 is opened; or when the first temperature sensor 17 detects that the output pipeline temperature of the first circulating water pump group 4 is too high, the first bypass pipe 16 is opened to prevent the first plate heat exchanger 3 from being damaged by excessive temperature.

[0037] The first circulating water pump group 4 and the second circulating water pump group 5 have the same structure. The first circulating water pump group 4 includes at least two circulating water pump assemblies 41, each of which is configured as one in use and one as a standby. Each circulating water pump assembly 41 includes a first water supply pipe 42. The first insulated water tank 1 is connected to the input end of the first heat exchange system 31 of the first plate heat exchanger 3 through the first water supply pipe 42. The first water supply pipe 42 is provided with a third butterfly valve 421, a first check valve 422, a first pressure gauge 423, a first reducer 424, and a first variable valve from left to right. The frequency pump 425, the second reducer 426, the first Y-type filter 427, the fourth butterfly valve 428, the third butterfly valve 421, and the fourth butterfly valve 428 are used to control the opening and closing of the pipeline. The first check valve 422 is used to prevent the backflow of water at the plate heat exchanger end. The first pressure gauge 423 is used to monitor the pipeline pressure. The side of the first Y-type filter 427 is also connected to a second bypass pipe 4271. The second bypass pipe 4271 is equipped with a second pressure gauge 4272, which is used to display the pressure difference before and after the first Y-type filter 427.

[0038] The first water pump group 7 and the second water pump group 8 have the same structure. The first water pump group 7 includes at least two water pump assemblies 71, each of which is configured as one in use and one as a backup. Each water pump assembly 71 includes a second water supply pipe 72. The first insulated water tank 1 is connected to the external workshop medium-temperature water supply port 11 and the second insulated water tank 2 respectively through the second water supply pipe 72. The second water supply pipe 72 is provided with a fifth butterfly valve 721, a second Y-type filter 722, a third reducer 723, a second variable frequency water pump 724, and a fourth reducer from left to right. Pipe 725, third pressure gauge 726, second check valve 727, sixth butterfly valve 728, fifth butterfly valve 721, and sixth butterfly valve 728 are used to control the opening and closing of the pipeline. The second check valve 727 is used to prevent the backflow of water output from the second variable frequency water pump 724. The third pressure gauge 726 is used to monitor the pipeline pressure. The side of the second Y-type filter 722 is also connected to a third bypass pipe 7221. A fourth pressure gauge 7222 is installed on the third bypass pipe 7221. The fourth pressure gauge 7222 is used to display the pressure difference before and after the second Y-type filter 722.

[0039] The capacity of the first insulated water tank 1 is smaller than that of the second insulated water tank 2. Preferably, the capacity of the second insulated water tank 2 is 1.5 to 2 times larger. This is because, firstly, if the first water tank is too large, the high-temperature water will dissipate heat to the environment through the tank wall during storage, resulting in a reduction in the actual usable heat energy; secondly, the demand for high-temperature water in the workshop is characterized by sudden changes and large instantaneous flow rates, and a larger capacity second water tank can reduce the frequent start-stop of the water source heat pump; and thirdly, the heat loss rate of high-temperature water is higher during transportation, requiring a larger capacity to maintain a stable terminal water temperature.

[0040] The first plate heat exchanger 3 has a fifth pressure gauge 311, a first thermometer 312, a first electric valve 313, and a seventh butterfly valve 314 arranged sequentially from left to right on the side of the output end of the first heat exchange system 31 of the first plate heat exchanger 3. The fifth pressure gauge 311 and the first thermometer 312 are used to monitor the temperature and pressure at the output end of the first heat exchange system 31 of the first plate heat exchanger 3. The first electric valve 313 is used to regulate the flow rate in the pipeline. The seventh butterfly valve 314 is used to control the opening and closing of the output end of the first heat exchange system 31 of the first plate heat exchanger 3.

[0041] The beneficial effects of this utility model are as follows: This utility model proposes a pure water heating system utilizing multiple energy sources, including a first insulated water tank 1, a second insulated water tank 2, a first plate heat exchanger 3, a first circulating water pump group 4, a second circulating water pump group 5, a third circulating water pump group 6, a first delivery water pump group 7, a second delivery water pump group 8, and a water source heat pump group 12. The first insulated water tank 1 and the second insulated water tank 2 form a two-stage heating and water storage unit, which can independently supply dual temperatures. The first delivery pump group directly outputs stable medium-temperature water, and the second delivery pump group 8 outputs stable high-temperature water. Waste heat recovery from the air compressor utilizes the waste heat of the air compressor for primary pure water preheating, while the heat source of the external cooling water tank 13 is used for secondary heating to obtain high-temperature water. This fully utilizes multiple energy sources and uses them in a tiered manner to reduce energy consumption. The capacity of the first insulated water tank 1 is smaller than that of the second insulated water tank 2, which can mitigate the impact of increased load.

[0042] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and these all fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. A pure water heating system utilizing multiple energy sources, comprising a first insulated water tank (1), a second insulated water tank (2), a first plate heat exchanger (3), a first circulating water pump group (4), a second circulating water pump group (5), a third circulating water pump group (6), a first delivery water pump group (7), a second delivery water pump group (8), and a water source heat pump group (12), characterized in that: An external pure water inlet (9) is connected to the first insulated water tank (1) via a pipe. The first insulated water tank (1) is connected to the input end of the first heat exchange system (31) of the first plate heat exchanger (3) via the first circulating water pump group (4). The output end of the first heat exchange system (31) of the first plate heat exchanger (3) is connected to the first insulated water tank (1) via a pipe. The second heat exchange system (32) of the first plate heat exchanger (3) is connected to the external compressed air heat recovery equipment (10). The first insulated water tank (1) is connected to the external workshop medium-temperature water supply inlet (11) and the second insulated water tank (10) via the first delivery water pump group (7). 2) Connection: The second insulated water tank (2) is connected to the input end of one end of the water source heat pump group (12) through the second circulating water pump group (5). The output end of one end of the water source heat pump group (12) is connected to the second insulated water tank (2) through a pipe. The output end of the external cooling water tank (13) is connected to the input end of the other end of the water source heat pump group (12) through the third circulating water pump group (6). The output end of the other end of the water source heat pump group (12) is connected to the input end of the external cooling water tank (13) through a pipe. The second insulated water tank (2) is connected to the external workshop high temperature water supply port (14) through the second delivery water pump group (8).

2. The pure water heating system using multiple energy sources according to claim 1, wherein: A first butterfly valve (15) is provided on the pipes connecting the first insulated water tank (1) to the external pure water outlet (9) and near the first insulated water tank (1), the pipes connecting the first insulated water tank (1) to the first circulating water pump group (4) and near the first insulated water tank (1), the pipes connecting the first insulated water tank (1) to the first delivery water pump group (7) and near the first insulated water tank (1), and the pipes connecting the first insulated water tank (1) to the output end of the first heat exchange system (31) of the first plate heat exchanger (3) and near the first insulated water tank (1). The first butterfly valve (15) is used to control the opening and closing of the output and input pipes of the first insulated water tank (1).

3. The pure water heating system using multiple energy sources according to claim 1, wherein: A first temperature sensor (17) is also provided between the input end of the first heat exchange system (31) of the first circulating water pump group (4) and the first plate heat exchanger (3). The first temperature sensor (17) is used to monitor the output pipe temperature of the first circulating water pump group (4).

4. The pure water heating system using multiple energy sources according to claim 1, wherein: A first bypass pipe (16) is connected between the output end of the first heat exchange system (31) of the first plate heat exchanger (3) and the input end of the first heat exchange system (31) of the first plate heat exchanger (3). A second butterfly valve (161) is provided on the first bypass pipe (16). The second butterfly valve (161) is used to control the opening and closing of the first bypass pipe (16).

5. The pure water heating system using multiple energy sources according to claim 1, wherein: The first circulating water pump group (4) and the second circulating water pump group (5) have the same structure. The first circulating water pump group (4) includes at least two circulating water pump assemblies (41). Each circulating water pump assembly (41) is set up with one in use and one on standby. Each circulating water pump assembly (41) includes a first water supply pipe (42). The first insulated water tank (1) is connected to the input end of the first heat exchange system (31) of the first plate heat exchanger (3) through the first water supply pipe (42). The first water supply pipe (42) is provided with a third butterfly valve (421), a first check valve (422), a first pressure gauge (423), a first reducer (424), and a second pressure gauge (425) from left to right. A variable frequency water pump (425), a second reducer (426), a first Y-type filter (427), a fourth butterfly valve (428), a third butterfly valve (421), and a fourth butterfly valve (428) are used to control the opening and closing of the pipeline. A first check valve (422) is used to prevent water flow back at the plate heat exchanger end. A first pressure gauge (423) is used to monitor the pipeline pressure. A second bypass pipe (4271) is also connected to the side of the first Y-type filter (427). A second pressure gauge (4272) is provided on the second bypass pipe (4271). The second pressure gauge (4272) is used to display the pressure difference before and after the first Y-type filter (427).

6. The pure water heating system using multiple energy sources according to claim 1, wherein: The first water pump group (7) and the second water pump group (8) have the same structure. The first water pump group (7) includes at least two water pump assemblies (71). Each water pump assembly (71) is set up with one in use and one on standby. Each water pump assembly (71) includes a second water pipe (72). The first insulated water tank (1) is connected to the external workshop medium-temperature water supply port (11) and the second insulated water tank (2) through the second water pipe (72). The second water pipe (72) is provided with a fifth butterfly valve (721), a second Y-type filter (722), a third reducer (723), a second variable frequency water pump (724), and a fourth reducer from left to right. The pipe (725), the third pressure gauge (726), the second check valve (727), the sixth butterfly valve (728), the fifth butterfly valve (721), and the sixth butterfly valve (728) are used to control the opening and closing of the pipeline. The second check valve (727) is used to prevent the backflow of water output from the second variable frequency water pump (724). The third pressure gauge (726) is used to monitor the pipeline pressure. The side of the second Y-type filter (722) is also connected to the third bypass pipe (7221). The third bypass pipe (7221) is equipped with a fourth pressure gauge (7222). The fourth pressure gauge (7222) is used to display the pressure difference before and after the second Y-type filter (722).

7. The pure water heating system using multiple energy sources according to claim 1, wherein: The capacity of the first insulated water tank (1) is smaller than that of the second insulated water tank (2).

8. The pure water heating system using multiple energy sources according to claim 1, wherein: The side of the output end of the first heat exchange system (31) of the first plate heat exchanger (3) is sequentially provided from left to right with a fifth pressure gauge (311), a first thermometer (312), a first electric valve (313), a seventh butterfly valve (314), the fifth pressure gauge (311) and the first thermometer (312) are used for monitoring the temperature and pressure of the output end of the first heat exchange system (31) of the first plate heat exchanger (3), the first electric valve (313) is used for adjusting the pipeline flow, and the seventh butterfly valve (314) is used for controlling the opening and closing of the output end of the first heat exchange system (31) of the first plate heat exchanger (3).

Images