Multi-source industrial waste heat and solar energy collaborative heating system and control method thereof

Abstract

This invention relates to the field of industrial energy comprehensive utilization technology, and particularly to a multi-source industrial waste heat and solar energy synergistic heating system and control method. It includes a flash steam waste heat direct transmission group, a condensate waste heat direct transmission group, and an air compressor waste heat input group, the outputs of which are respectively connected to the input of a solar water heating unit. The outputs of the condensate waste heat direct transmission group, the flash steam waste heat direct transmission group, and the air compressor waste heat input group are respectively connected to the input of a first solar water heating tank. The first solar water heating tank and a second solar water heating tank are connected in parallel. The first solar water heating tank also... The heat exchange group includes a second solar water heater. Temperature monitors are installed on both the first and second solar water heaters. The two temperature monitors are electrically connected to the waste heat input group of the air compressor and the heat exchange group of the solar water heater via a first controller. The input terminals of the solar vacuum collector input group and the air heat source input group are both connected to the input terminal of the first solar water heater. The light sensor is electrically connected to the solar vacuum collector input group and the air heat source input group via the first controller. This solves the problems of discontinuous heating and large temperature fluctuations in the heating system of the existing tobacco processing technology.

Description

Technical Field

[0001] This invention relates to the field of industrial energy comprehensive utilization technology, and in particular to a multi-source industrial waste heat and solar energy synergistic heating system and its control method. Background Technology

[0002] Guided by the tobacco factory's "dual carbon" goals, energy conservation, carbon reduction, and renewable energy substitution have become the core tasks of energy transformation. As a key infrastructure in the tobacco factory's tobacco processing technology, the heating system's energy utilization efficiency and low-carbon level directly affect the progress of achieving the "dual carbon" goals.

[0003] In existing centralized heating systems, independent heating is generally achieved through condensate waste heat, flash steam waste heat air heat source and solar vacuum tube heat collection. However, this method has the following drawbacks: (1) Each energy unit operates independently, failing to build an efficient coupling architecture of multi-source waste heat and solar energy; (2) It fails to monitor the energy supply status of each energy unit and the temperature change of the heat storage device in real time, resulting in unreasonable multi-energy distribution, low heat exchange efficiency, and even excessive fluctuations in heating temperature; (3) It cannot achieve adaptive adjustment based on key parameters such as light intensity, waste heat energy supply sufficiency, and heat storage temperature difference. These drawbacks not only cause discontinuous heating in the heating system during the heating process, but also cause large fluctuations in heating temperature in the heating system.

[0004] Therefore, it is necessary to improve and optimize the existing multi-heating unit heating structure to solve the problems of discontinuous heating and large temperature fluctuations in the heating system of the existing tobacco processing technology. Summary of the Invention

[0005] The purpose of this invention is to propose a multi-source industrial waste heat and solar energy co-heating system and its control method to solve the problems of discontinuous heating and large temperature fluctuations in the heating system of existing tobacco processing technology.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This application proposes a multi-source industrial waste heat and solar energy co-heating system in its first aspect, comprising:

[0008] The industrial waste heat transfer unit includes a condensate waste heat direct transfer group, a flash steam waste heat direct transfer group, and an air compressor waste heat input group. The output ends of the condensate waste heat direct transfer group, the flash steam waste heat direct transfer group, and the air compressor waste heat input group are respectively connected to the input end of the heat storage unit.

[0009] The thermal storage unit includes a temperature monitor, a first solar water heater, a second solar water heater, and a solar water heater heat exchanger group. The output ends of the condensate waste heat direct transmission group, the flash steam waste heat direct transmission group, and the air compressor waste heat input group are respectively connected to the input end of the first solar water heater and the second solar water heater. The output ends of the first solar water heater and the second solar water heater are respectively connected to the input end of the heating network. The first solar water heater is also connected to the second solar water heater through the solar water heater heat exchanger group. Temperature monitors are respectively installed on the first solar water heater and the second solar water heater. The two temperature monitors are electrically connected to the air compressor waste heat input group and the solar water heater heat exchanger group through a first controller.

[0010] The clean energy heat transfer unit includes a solar vacuum tube heat collector input group, an air heat source input group, and a light sensor. The output ends of the solar vacuum tube heat collector input group and the air heat source input group are connected to the input ends of the first solar water tank and the second solar water tank. The light sensor is electrically connected to the solar vacuum tube heat collector input group through the first controller.

[0011] Preferably, the solar vacuum tube collector input group includes a solar vacuum tube collector and a first circulation pump; the output end of each solar vacuum tube collector is connected to the input end of each first circulation pump, the output end of each first circulation pump is connected to the input ends of the first solar water tank and the second solar water tank respectively, and each first circulation pump is electrically connected to each light sensor through a first controller.

[0012] Preferably, the air heat source input group is an air heat source pump.

[0013] Preferably, the air compressor waste heat input group includes an air compressor waste heat unit, an oil-gas separator, a buffer heat storage tank, and a first heat exchanger; the output end of each air compressor waste heat unit is connected to the input end of each buffer heat storage tank through each oil-gas separator, and the output end of each buffer heat storage tank is connected to the first solar water heater and the second solar water heater respectively through the first heat exchanger and the first air pump; each first heat exchanger and each first air pump are electrically connected to the temperature monitor on the first solar water heater and the temperature detector on the second solar water heater respectively through the first controller.

[0014] Preferably, waste heat energy monitoring devices are installed on the air compressor waste heat group, the condensate waste heat direct transmission group, the flash steam waste heat direct transmission group, the solar vacuum tube collector, and the air heat source input group. The waste heat energy monitoring devices are electrically connected to the first controller.

[0015] Preferably, the solar water heater heat exchange group includes a second heat exchanger and a second air pump. The first solar water heater is connected to the second solar water heater through the second heat exchanger and the second air pump. The second heat exchanger and the second air pump are electrically connected to the temperature monitor on the first solar water heater and the temperature monitor on the second solar water heater, respectively, through a first controller.

[0016] This application proposes a control method for a multi-source industrial waste heat and solar energy co-heating system in its second aspect, including the following steps:

[0017] S1. After the condensate waste heat direct transmission group, flash steam waste heat direct transmission group and air heat source input group respectively input heat into the first solar water tank and the second solar water tank, the light intensity data at this time is obtained. Based on the light intensity data, the first light intensity threshold and the second light intensity threshold, the state of each solar vacuum tube heat collection input group inputting heat into the first solar water tank and the state of the second solar water tank inputting heat are controlled.

[0018] S2. After heat is input into the first and second solar water tanks for a period of time by the condensate waste heat direct transmission group, flash steam waste heat direct transmission group, air heat source input group, and solar vacuum tube collector input group, and the temperatures of the first and second solar water tanks fail to meet the requirements and the energy from the above three sources is insufficient, the temperature data of the first solar water tank, the temperature data of the second solar water tank, the waste heat supply data of the condensate waste heat direct transmission group, the waste heat supply data of the flash steam waste heat direct transmission group, the waste heat supply data of the solar vacuum tube collector, and the waste heat supply data of the air heat source input group are obtained. Based on the temperature of the first solar water tank... Data, including the temperature data of the second solar water heater, the waste heat supply data of the condensate waste heat direct transmission group, the waste heat supply data of the flash steam waste heat direct transmission group, the waste heat supply data of the solar vacuum tube collector, the waste heat supply data of the air heat source input group, the first temperature threshold, the second temperature threshold, and the temperature difference data between the first and second solar water heaters, are used to control the state of heat input from each air compressor waste heat group to the first solar water heater and the state of heat input to the second solar water heater; wherein, the first temperature threshold is the first temperature threshold of the solar water heater; and the second temperature threshold is the second temperature threshold of the solar water heater.

[0019] S3. After each air compressor waste heat group supplies heat to the first solar water heater and the second solar water heater respectively, based on the temperature difference data between the first solar water heater and the second solar water heater, the first temperature difference threshold and the second temperature difference threshold, the solar water heater heat exchange group is controlled to transfer heat from the first solar water heater to the second solar water heater or from the second solar water heater to the first solar water heater; wherein, the first temperature difference threshold is the first temperature threshold of the solar water heater; the second temperature difference threshold is the second temperature threshold of the solar water heater.

[0020] Prioritized, in step S1, after the condensate waste heat direct transmission group, flash steam waste heat direct transmission group, and air heat source input group respectively input heat into the first solar water tank and the second solar water tank, the light intensity data at this time is acquired. Based on the light intensity data, the first light intensity threshold, and the second light intensity threshold, the states of heat input from each solar vacuum tube collector input group to the first solar water tank and the states of heat input to the second solar water tank are controlled, including the following steps:

[0021] S1.1 After heat is input into the first solar water tank via the condensate waste heat direct transmission group, flash steam waste heat direct transmission group, and air heat source input group corresponding to the first solar water tank, and heat is input into the second solar water tank via the condensate waste heat direct transmission group, flash steam waste heat direct transmission group, and air heat source input group corresponding to the second solar water tank, the light intensity data at this time is obtained through the light sensor. The first controller compares the light intensity data with the first light intensity threshold and the second light intensity threshold preset in the first controller, respectively; wherein, the first light intensity threshold is a light intensity ≥ 500w / m 2 The second light intensity threshold is light intensity <300w / m². 2 ;

[0022] S1.2 If the light intensity data is greater than or equal to the first light intensity threshold, the first circulation pump in each solar vacuum tube heat collection input group is turned on by the first controller, and the solar vacuum tube heat collector in each solar vacuum tube heat collection input group inputs heat to the heat input terminal of the first solar water tank and the heat input terminal of the second solar water tank respectively; at the same time, the process from S1.1 to S1.2 is repeated.

[0023] S1.3 If the light intensity data is less than the first light intensity threshold and also less than the second light intensity threshold, then the first circulation pump in each solar vacuum tube collector input group is shut down by the first controller, so that the solar vacuum tube collector in each solar vacuum tube collector input group will not input heat to the heat input terminal of the first solar water heater and the heat input terminal of the first solar water heater; at the same time, the process from S1.1 to S1.3 is repeated.

[0024] S1.4 If the light intensity data is less than the first light intensity threshold and greater than the second light intensity threshold, the first circulation pump in each solar vacuum tube heat collection input group is controlled by the first controller to maintain the current state; at the same time, the process from S1.1 to S1.4 is repeated.

[0025] Prioritized, in step S2, after heat is input into the first and second solar water tanks for a period of time by the condensate waste heat direct transmission group, flash steam waste heat direct transmission group, air heat source input group, and solar vacuum tube collector input group, if the temperatures of the first and second solar water tanks do not reach the required levels and the energy from the above three sources is insufficient, the following data are acquired: temperature data of the first solar water tank, temperature data of the second solar water tank, waste heat supply data of the condensate waste heat direct transmission group, waste heat supply data of the flash steam waste heat direct transmission group, waste heat supply data of the solar vacuum tube collector, and air heat source input data. Based on waste heat supply data from the first solar water heater, the second solar water heater, the condensate waste heat direct transfer group, the flash steam waste heat direct transfer group, the solar vacuum tube collector waste heat, the air heat source input group, a first temperature threshold, a second temperature threshold, and the temperature difference between the first and second solar water heaters, the system controls the heat input from each air compressor waste heat group to the first and second solar water heaters, including the following steps:

[0026] S2.1 After the condensate waste heat direct transmission group 2, flash steam waste heat direct transmission group 3, air heat source input group 12, and solar vacuum tube collector input group 11 respectively input heat into the first solar water tank and the second solar water tank for a period of time, if the temperature of the first solar water tank and the second solar water tank fails to meet the requirements and the energy of the above three sources is insufficient, the temperature monitoring device collects the temperature data of the first solar water tank and the temperature data of the second solar water tank. The first controller compares the temperature data of the first solar water tank with the preset first temperature threshold in the first controller and the temperature data of the second solar water tank with the preset first temperature threshold in the first controller; wherein, the first temperature threshold is the solar water tank temperature <55℃;

[0027] S2.2 If the temperature of the first solar water heater is greater than the first temperature threshold, the first controller controls the first heat exchanger and the first air pump in the waste heat input group of the air compressor corresponding to the first solar water heater to shut down. The heat stored in the buffer storage tank of the waste heat input group of the air compressor corresponding to the first solar water heater will not be input to the heat input terminal of the first solar water heater. Simultaneously, the process from S2.1 to S2.2 is repeated. If the temperature of the second solar water heater is greater than the first temperature threshold, the first controller controls the first heat exchanger and the first air pump in the waste heat input group of the air compressor corresponding to the second solar water heater to shut down. The heat stored in the buffer storage tank of the waste heat input group of the air compressor corresponding to the second solar water heater will not be input to the heat input terminal of the second solar water heater. Simultaneously, the process from S2.1 to S2.2 is repeated.

[0028] S2.3 If the temperature of the first solar water tank is lower than the first temperature threshold, the waste heat supply monitor determines whether the waste heat supply of the condensate waste heat direct transmission group, the flash steam waste heat direct transmission group, the solar vacuum tube collector waste heat supply, and the air heat source input group corresponding to the first solar water tank is sufficient; if the temperature of the second solar water tank is lower than the first temperature threshold, the waste heat supply monitor determines whether the waste heat supply of the condensate waste heat direct transmission group, the flash steam waste heat direct transmission group, and the solar vacuum tube collector waste heat supply corresponding to the second solar water tank is sufficient.

[0029] S2.4 If the waste heat supply from the condensate waste heat direct transmission group corresponding to the first solar water tank is sufficient, the waste heat supply from the flash steam waste heat direct transmission group corresponding to the first solar water tank is sufficient, the waste heat supply from the solar vacuum tube collector corresponding to the first solar water tank is sufficient, and the waste heat supply from the air heat source input group corresponding to the first solar water tank is sufficient, then maintain the current heating state; simultaneously, repeat the process from S2.1 to S2.4. If the waste heat supply from the condensate waste heat direct transmission group corresponding to the second solar water tank is sufficient, the waste heat supply from the flash steam waste heat direct transmission group corresponding to the second solar water tank is sufficient, the waste heat supply from the solar vacuum tube collector corresponding to the second solar water tank is sufficient, and the waste heat supply from the air heat source input group corresponding to the first solar water tank is sufficient, then maintain the current heating state; simultaneously, repeat the process from S2.1 to S2.4.

[0030] S2.5 If the waste heat supply of the condensate waste heat direct transmission group corresponding to the second solar water tank is insufficient, the flash steam waste heat direct transmission group corresponding to the second solar water tank is insufficient, the solar vacuum tube collector corresponding to the second solar water tank is insufficient, and the air heat source input group corresponding to the second solar water tank is insufficient, then the waste heat supply monitor controls the first heat exchanger and the first air pump in the air compressor waste heat input group corresponding to the second solar water tank to start through the first controller. The heat stored in the buffer storage tank in the air compressor waste heat input group corresponding to the second solar water tank will then be input to the heat input terminal of the second solar water tank. If the waste heat supply of the condensate waste heat direct transmission group corresponding to the first solar water tank is insufficient, the flash steam waste heat direct transmission group corresponding to the first solar water tank is insufficient, the solar vacuum tube collector corresponding to the first solar water tank is insufficient, and the air heat source input group corresponding to the first solar water tank is insufficient, then the waste heat supply monitor controls the first heat exchanger and the first air pump in the air compressor waste heat input group corresponding to the first solar water tank to start through the first controller, and the heat stored in the buffer heat storage box in the air compressor waste heat input group corresponding to the first solar water tank is input to the heat input end of the first solar water tank.

[0031] S2.6 After the heat stored in the buffer storage box of the air compressor waste heat input group corresponding to the second solar water tank is input to the heat input terminal of the second solar water tank, and after the heat stored in the buffer storage box of the air compressor waste heat input group corresponding to the first solar water tank is input to the heat input terminal of the first solar water tank, the temperature data of the first solar water tank and the second solar water tank are collected again by the temperature monitor.

[0032] S2.7. Based on the re-collected temperature data of the first and second solar water heaters, the first controller calculates the temperature difference between the two solar water heaters and compares the temperature difference between them with a preset second temperature threshold 1 within the first controller, or compares the re-collected temperatures of the first and second solar water heaters with preset second temperature thresholds 2 within the first controller; wherein, the first second temperature threshold 1 is: Δt≤3℃; the second second temperature threshold 2 is: T≥58℃.

[0033] S2.8 If the temperature of the first solar water tank is greater than or equal to the second temperature threshold 2, or if the temperature difference between the first and second solar water tanks is less than or equal to the second temperature threshold 1, then the first controller controls the first heat exchanger and the second air pump in the air compressor waste heat input group corresponding to the first solar water tank to shut down, and the heat stored in the buffer storage tank in the air compressor waste heat input group corresponding to the first solar water tank will not be input to the heat input terminal of the first solar water tank; at the same time, the process from S2.1 to S2.8 is repeated; If the temperature of the second solar water tank is greater than or equal to the second temperature threshold 2, or if the temperature difference between the first and second solar water tanks is less than or equal to the second temperature threshold 1, then the first controller controls the first heat exchanger and the second air pump in the air compressor waste heat input group corresponding to the second solar water tank to shut down, and the heat stored in the buffer storage tank in the air compressor waste heat input group corresponding to the second solar water tank will not be input to the heat input terminal of the second solar water tank; at the same time, the process from S2.1 to S2.8 is repeated.

[0034] S2.9 If the temperature of the first solar water heater is less than the first temperature threshold 2, or if the temperature difference between the first and second solar water heaters is greater than or equal to the second temperature threshold 1, then repeat steps S2.5 to S2.9; if the temperature of the second solar water heater is less than the first temperature threshold 2, or if the temperature difference between the first and second solar water heaters is greater than or equal to the second temperature threshold 1, then repeat steps S2.5 to S2.9; if the temperature of the first solar water heater is less than the first temperature threshold 2, or if the temperature difference between the first and second solar water heaters is less than or equal to the second temperature threshold 1, then repeat steps S2.5 to S2.9. The process is as follows: If the temperature of the second solar water heater is less than the first temperature threshold 2, or if the temperature difference between the first and second solar water heaters is less than or equal to the second temperature threshold 1, then cycle through process S2.5 to S2.9; if the temperature of the first solar water heater is greater than or equal to the first temperature threshold 2, or if the temperature difference between the first and second solar water heaters is less than or equal to the second temperature threshold 1, then cycle through process S2.5 to S2.9; if the temperature of the second solar water heater is greater than or equal to the first temperature threshold 2, or if the temperature difference between the first and second solar water heaters is less than or equal to the second temperature threshold 1, then cycle through process S2.5 to S2.9.

[0035] Preferably, in step S3, after each air compressor waste heat unit supplies heat to the first solar water heater and the second solar water heater respectively, based on the temperature difference data between the first and second solar water heaters, the first temperature difference threshold, and the second temperature difference threshold, the solar water heater heat exchange unit is controlled to transfer heat from the first solar water heater to the second solar water heater or from the second solar water heater to the first solar water heater, including the following steps:

[0036] S3.1 After each air compressor waste heat unit supplies heat to the first solar water heater and the second solar water heater respectively, the temperature data of the first solar water heater and the second solar water heater are collected by the temperature monitor. The first controller then calculates the temperature difference between the first solar water heater and the second solar water heater based on the temperature data of the first solar water heater and the second solar water heater, and compares the temperature difference between the first solar water heater and the second solar water heater with the first temperature difference threshold preset in the first controller; wherein, the first temperature threshold is △T>5℃;

[0037] S3.2 If the temperature difference between the first solar water heater and the second solar water heater is less than the first temperature difference threshold, the first controller controls the second heat exchanger and the second air pump in the solar water heater heat exchange group to shut down, so that the first solar water heater will not send heat to the second solar water heater or the second solar water heater will not send heat to the first solar water heater; at the same time, the process from S3.1 to S3.2 is repeated.

[0038] S3.3 If the temperature difference between the first solar water heater and the second solar water heater is greater than the first temperature difference threshold, the second heat exchanger and the second air pump in the solar water heater heat exchange group are turned on by the first controller. The high-temperature first solar water heater sends heat to the low-temperature second solar water heater, or the high-temperature second solar water heater sends heat to the low-temperature first solar water heater.

[0039] S3.4 After the first solar water heater, which is at a high temperature, transfers heat to the second solar water heater, which is at a low temperature, or the second solar water heater, which is at a high temperature, transfers heat to the first solar water heater, the temperature monitor collects the temperature data of the first solar water heater and the second solar water heater again. The first controller then calculates the temperature difference between the first and second solar water heaters based on the re-collected temperature data and compares the temperature difference between the first and second solar water heaters with a preset second temperature threshold in the first controller; wherein, the second temperature threshold is △T≤3℃.

[0040] S3.5 If the temperature difference between the first solar water heater and the second solar water heater is greater than the second temperature threshold, then repeat the process from S3.3 to S3.5.

[0041] S3.6 If the temperature difference between the first solar water heater and the second solar water heater is greater than or equal to the second temperature threshold, the first controller controls the second heat exchanger and the second air pump in the solar water heater heat exchange group to shut down, so that the first solar water heater will not send heat to the second solar water heater or the second solar water heater will not send heat to the first solar water heater; at the same time, the process from S3.1 to S3.6 above is repeated.

[0042] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0043] 1. In this invention, by integrating industrial condensate waste heat, flash steam waste heat, air compressor waste solar energy collection and air source heat pump clean energy into a multi-heat source linkage heating system, it is possible to flexibly switch and combine according to the operating conditions of light fluctuations and waste heat load changes, thereby ensuring the continuous reliability of heating and greatly improving the system heating stability, so as to solve the problem of discontinuous heating.

[0044] 2. This invention sets up a solar water tank heat exchange group between the first solar water tank and the second solar water tank. It can transfer and balance heat based on the temperature difference between the first solar water tank and the second solar water tank, so that the heat temperature in the first solar water tank and the heat temperature in the second solar water tank are within the required range, thereby ensuring the stability of the heating network heating temperature and improving the stability of heating supply, thus solving the problem of large fluctuations in heating temperature.

[0045] 3. By adopting a dual-tank heat storage structure consisting of a first solar water tank and a second solar water tank, and in conjunction with temperature monitoring and intelligent control, this invention not only achieves heat storage, distribution and buffering, but also effectively smooths heat source fluctuations and improves system heat utilization, thereby reducing energy waste.

[0046] 4. This invention monitors the light intensity in real time through a light sensor and automatically controls the start-up and operation status of the solar vacuum tube collector. That is, it collects heat at full load under strong light, maintains operation under weak light, and stops operation under low light. This not only avoids ineffective cycles and energy consumption and maximizes the utilization of solar energy, but also increases the proportion of clean energy.

[0047] 5. By electrically connecting the temperature monitor, waste heat energy supply monitor, and light sensor to the first controller, the present invention enables the temperature monitor, waste heat energy supply monitor, and light sensor to be uniformly controlled in a closed loop by the first controller, thereby realizing fully automated operation of heat source input, heat storage and heat exchange, and start-stop switching. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structural connection of the present invention. Figure 1 .

[0049] Figure 2 This is a schematic diagram of some circuit connections in the structure of the present invention. Figure 1 .

[0050] Figure 3 This is a schematic diagram of the structural connection of the present invention. Figure 2 .

[0051] Figure 4 This is a schematic diagram of some circuit connections in the structure of the present invention. Figure 2 .

[0052] Figure 5 This is a control diagram of the structure of the present invention. Figure 1 .

[0053] Figure 6 This is a control diagram of the structure of the present invention. Figure 2 .

[0054] Figure 7 This is a control diagram of the structure of the present invention. Figure 3 .

[0055] Figure 8 This is a schematic diagram of the process of the multi-source industrial waste heat and solar energy synergistic heating control method based on centralized thermal storage in the structure of the present invention.

[0056] In the diagram, 1-Industrial waste heat transfer unit, 2-Condensate waste heat direct transfer group, 3-Flash steam waste heat direct transfer group, 4-Air compressor waste heat input group, 6-Solar water heating unit, 7-First solar water heating tank, 8-Second solar water heating tank, 9-Solar water heating tank heat exchange group, 10-Clean energy heat transfer unit, 11-Solar vacuum tube collector input group, 12-Air heat source input group, 13-Light sensor, 14-Solar vacuum tube collector, 15-First circulating pump, 16-Air compressor waste heat group, 17-Oil-gas separator, 18-Buffer heat storage tank, 19-First heat exchanger, 20-Second heat exchanger, 21-Second air pump. Detailed Implementation

[0057] like Figure 1-8 As shown, to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0058] Example

[0059] In existing centralized heating systems, independent heating is generally achieved through condensate waste heat, flash steam waste heat air heat source and solar vacuum tube heat collection. However, this method has the following drawbacks: (1) Each energy unit operates independently, failing to build an efficient coupling architecture of multi-source waste heat and solar energy; (2) It fails to monitor the energy supply status of each energy unit and the temperature change of the heat storage device in real time, resulting in unreasonable multi-energy distribution, low heat exchange efficiency, and even excessive fluctuations in heating temperature; (3) It cannot achieve adaptive adjustment based on key parameters such as light intensity, waste heat energy supply sufficiency, and heat storage temperature difference. These drawbacks not only cause discontinuous heating in the heating system during the heating process, but also cause large fluctuations in heating temperature in the heating system.

[0060] Therefore, this application proposes a multi-source industrial waste heat and solar energy co-heating system and its control method to solve the problems of discontinuous heating and large temperature fluctuations in the existing heating systems of tobacco processing plants.

[0061] For details, please refer to Figure 1 and Figure 2This application proposes a multi-source industrial waste heat and solar energy co-heating system in its first aspect. The multi-source industrial waste heat and solar energy co-heating system includes an industrial waste heat transfer unit 1, a heat storage unit 6, and a clean energy heat transfer unit 10. The industrial waste heat transfer unit 1 includes a condensate waste heat direct transfer group 2, a flash steam waste heat direct transfer group 3, and an air compressor waste heat input group 4. The outputs of the air compressor waste heat input group 2, the flash steam waste heat direct transfer group 3, and the air compressor waste heat input group 4 are respectively connected to the input of the heat storage unit 6. The heat storage unit 6 includes a temperature monitor, a first solar water heater 7, a second solar water heater 8, and a solar water heater heat exchange group 9. The outputs of the air compressor waste heat input group 2, the flash steam waste heat direct transfer group 3, and the air compressor waste heat input group 4 are respectively connected to the input of the first solar water heater 7 and the second solar water heater 8. The output ends of the first solar water heater 7 and the second solar water heater 8 are respectively connected to the input end of the heating network. The first solar water heater 7 is also connected to the second solar water heater 8 through the solar water heater heat exchange group 9. Temperature monitors are respectively installed on the first solar water heater 7 and the second solar water heater 8. The two temperature monitors are electrically connected to the air compressor waste heat input group 4 and the solar water heater heat exchange group 9 through the first controller. The clean heat source heat transfer unit 10 includes a solar vacuum tube heat collection input group 11, an air heat source input group 12 and a light sensor 13. The output ends of the solar vacuum tube heat collection input group 11 and the air heat source input group 12 are both connected to the input ends of the first solar water heater 7 and the second solar water heater 8. The light sensor 13 is electrically connected to the solar vacuum tube heat collection input group 11 through the first controller.

[0062] In practical applications, when heating is provided by the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the air compressor waste heat input group 4, the solar vacuum tube collector input group 11, and the air heat source input group 12, the basic heat is first input to the first solar water tank 7 and the second solar water tank 8 through the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, and the air heat source input group 14, respectively. At the same time, the light intensity is collected by the light sensor 13, and the first controller automatically controls the start-up, shutdown, and operation status of the solar vacuum tube collector input group 11 according to the preset light intensity threshold, so as to realize the adaptive supplementation of solar heat. After the aforementioned heat sources, including the condensate waste heat direct transmission group 2, flash steam waste heat direct transmission group 3, air heat source input group 14, and solar vacuum tube collector input group 11, have been continuously supplying heat for a period of time, if the temperature of the first solar water tank 7 or the second solar water tank 8 does not reach the set requirements and the heat source supply is insufficient, the temperature of the first solar water tank 7 or the second solar water tank 8 will be collected by a temperature monitor, and the output of each basic heat source of the first solar water tank 7 and the output of each basic heat source of the second solar water tank 8 will be judged by a waste heat supply monitor. If the conditions are met, automatic activation will be performed. The waste heat input group 4 of the air compressor supplements the heat supply to either the first solar water tank 7 or the second solar water tank 8. Based on the real-time temperatures of the first solar water tank 7 and the second solar water tank 8, as well as the temperature difference between the two tanks, the opening and closing of the waste heat input group 4 is controlled to maintain the temperature of either the first solar water tank 7 or the second solar water tank 8 within a reasonable range. Meanwhile, the temperature difference between the first solar water tank 7 and the second solar water tank 8 is continuously monitored. When the temperature difference between tank 8 and tank 8 exceeds a preset threshold, the solar water heater heat exchange group 9 is automatically activated. The heat from the high-temperature first solar water heater 7 is transferred to the low-temperature second solar water heater 8, or vice versa. This continues until the temperature difference between the first solar water heater 7 and the second solar water heater 8 reaches equilibrium, at which point the solar water heater heat exchange group 9 is shut off. This ensures a balanced distribution of heat between the first solar water heater 7 and the second solar water heater 8, ultimately resulting in a stable output of heat to the heating network from both tanks. This not only allows for flexible switching and combination based on fluctuations in sunlight and changes in waste heat load, ensuring continuous and reliable heating and significantly improving system heating stability, thus solving the problem of discontinuous heating, but also facilitates heat transfer and balancing based on the temperature difference between the first solar water heater 7 and the second solar water heater 8. This keeps the temperatures in both tanks within the required range, ensuring the stability of the heating network's temperature and thus improving overall heating stability to address the problem of large temperature fluctuations.

[0063] Please see Figure 3 and Figure 4The solar vacuum tube collector input group 11, used to provide heat to the first solar water tank 7 and the second solar water tank 8, includes a solar vacuum tube collector 14 and a first circulation pump 15; the output end of each solar vacuum tube collector 14 is connected to the input end of each first circulation pump 15, the output end of each first circulation pump 15 is connected to the input ends of the first solar water tank 7 and the second solar water tank 8 respectively, and each first circulation pump 15 is electrically connected to each light sensor 13 through a first controller.

[0064] In practical applications, during the process of the solar vacuum tube collector input group 11 providing heat to the first solar water tank 7 and the second solar water tank 8, the first circulation pump 15 will draw the heat from the solar vacuum tube collector 14 into the first solar water tank 7 or the second solar water tank 8 and mix it with the heat directly input into the first solar water tank 7 or the second solar water tank 8 by the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3 and the air heat source input group 12, thereby supplementing the heat in the first solar water tank 7 or the second solar water tank 8 and ensuring that the heat temperature of the first solar water tank 7 or the second solar water tank 8 reaches the required range.

[0065] It should be noted that the solar vacuum tube collector, circulation pump and light sensor are existing technologies, and no improvements or designs have been made to them, so their structures will not be described in detail.

[0066] Please see Figure 3 and Figure 4 The air heat source input group 12, used to supply heat to the first solar water tank 7 or the second solar water tank 8, is an air heat source pump.

[0067] In practical applications, during the process of inputting heat into the first solar water tank 7 or the second solar water tank 8, an air heat source pump can be started. The hot air generated by the air heat source pump is then sent into the first solar water tank 7 or the second solar water tank 8 through the pipeline and mixed with the heat directly input into the first solar water tank 7 or the second solar water tank 8 by the condensate waste heat direct transmission group 2 and the flash steam waste heat direct transmission group 3, so that the heat temperature of the first solar water tank 7 or the heat temperature of the second solar water tank 8 is within a certain required range.

[0068] It should be noted that the air heat source pump is existing technology, and no improvements or designs have been made to it; therefore, its structure will not be described in detail. The output end of the air heat source pump is connected to either the first solar water tank 7 or the second solar water tank via a pipe.

[0069] Please see Figure 3 and Figure 4The air compressor waste heat input group 4, used to supply heat to the first solar water tank 7 or the second solar water tank 8 when the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12 are all insufficient, includes an air compressor waste heat group 16, an oil-gas separator 17, a buffer heat storage box 18, and a first heat exchanger 19; the output end of each air compressor waste heat group 16 is connected to the input end of each buffer heat storage box 18 through each oil-gas separator 17, and the output end of each buffer heat storage box 18 is connected to the first solar water tank 7 and the second solar water tank 8 respectively through the first heat exchanger 19 and the first air pump; each first heat exchanger 19 and each first air pump are electrically connected to the temperature monitor on the first solar water tank 7 and the temperature detector on the second solar water tank 8 respectively through the first controller.

[0070] In practical applications, during the process of the air compressor waste heat input group 4 supplying heat to the first solar water tank 7 or the second solar water tank 8, the compressed air generated by the air compressor waste heat group 16 will first flow to the oil-gas separator 17 for oil-gas separation. After separation, the gas with residual heat will then enter the buffer heat storage tank 18 for temporary storage. After the first heat exchanger 19 and the first air pump are in working condition, under the suction action of the first air pump, the gas with residual heat temporarily stored in the buffer heat storage tank 18 will flow into the first solar water tank 7 and the second solar water tank 8 and mix with the heat input into the first solar water tank 7 or the second solar water tank 8 by the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the air heat source input group 12, and the solar vacuum tube heat collection input group 11, so that the heat temperature in the first solar water tank and the heat temperature in the second solar water tank are within the required range.

[0071] It should be noted that the oil-gas separator is existing technology and has not been improved or designed, so its structure will not be described in detail; the air compressor waste heat unit is the air compressor.

[0072] It should be noted that the output end of each air compressor waste heat unit 16 is connected to the input end of each buffer heat storage box 18 through each oil-gas separator 17, and the output end of each buffer heat storage box 18 is connected to the first solar water tank 7 and the second solar water tank 8 through the first heat exchanger 19 and the first air pump, respectively. Specifically, the output end of each air compressor waste heat unit 16 is connected to the first solar water tank 7 or the second solar water tank 8 through an air supply pipe in which the oil-gas separator 17, the buffer heat storage box 18, the first heat exchanger 19 and the first air pump are installed in sequence.

[0073] Please see Figure 3 and Figure 4To monitor in real time whether the heat output of each of the condensate waste heat direct transmission group 2, flash steam waste heat direct transmission group 3, solar vacuum tube collector 14, and air heat source input group 12 is sufficient, waste heat energy supply monitors are installed on the air compressor waste heat group 4, the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12. The waste heat energy supply monitors are electrically connected to the first controller.

[0074] In practical applications, during the process of inputting waste heat from the air compressor waste heat group 4, the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12 into the first solar water tank 7 or the second solar water tank 8, the waste heat energy supply monitor can monitor in real time whether the heat input of each of the air compressor waste heat group 4, the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12 has reached the preset threshold, so that the operators can be familiar with the energy supply status of each of the air compressor waste heat group 4, the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12.

[0075] It should be noted that the condensate waste heat direct transmission group 2 includes a condensate waste heat generating device, a first gas transmission pipe, and a first pump body; the condensate waste heat generating device is connected to the solar water tank through the first gas transmission pipe equipped with the first pump body; the flash steam waste heat direct transmission group 3 includes a flash steam waste heat generating device, a second gas transmission pipe, and a second pump body; the flash steam waste heat generating device is connected to the solar water tank through a second gas transmission pipe equipped with the second pump body. The flash steam waste heat generating device can be a steam boiler; the condensate waste heat generating device can be an air ventilation device.

[0076] It should be noted that the waste heat energy detector can be an air flow sensor; the air flow sensor is installed on the pipe connecting the oil-gas separator and the buffer heat storage box 18 in the air compressor waste heat input group 4, with the air flow sensor embedded in the pipe, the monitoring end of the air flow sensor located inside the pipe, and the display end of the air flow sensor located outside the pipe; the air flow sensor is installed on the condensate waste heat direct transmission group 2, with the air flow sensor installed at the waste heat outlet of the condensate waste heat equipment, the air flow sensor embedded in the waste heat outlet of the condensate waste heat equipment, the monitoring end of the air flow sensor located inside the waste heat outlet of the condensate waste heat equipment, and the display end of the air flow sensor located outside the waste heat outlet of the condensate waste heat equipment; the air flow sensor is installed on the flash steam waste heat direct transmission group 3, with the air flow sensor installed on the pipe connecting the oil-gas separator and the buffer heat storage box 18 in the air compressor waste heat input group 4, the monitoring end of the air flow sensor located inside the waste heat outlet of the condensate waste heat equipment, and the display end of the air flow sensor located outside the waste heat outlet of the condensate waste heat equipment; the air flow sensor is installed on the pipe connecting the oil-gas separator and the buffer heat storage box 18 in the flash steam waste heat direct transmission group 2, with the air flow sensor installed at the outlet of the condensate waste heat equipment, the monitoring end of the air flow sensor located inside the waste heat outlet of the condensate waste heat equipment, and the display end of the air flow sensor located outside the waste heat outlet of the condensate waste heat equipment; the air flow sensor is installed on the pipe connecting the oil-gas separator and the buffer heat storage box 18 in the flash steam waste heat direct transmission group 3, with the air flow sensor installed on the outlet of the condensate waste heat equipment, the monitoring end of the air flow sensor located inside the waste heat outlet of the condensate waste heat equipment, and the display end of the air flow sensor located outside the waste heat outlet of the condensate waste heat equipment; the air flow sensor is installed on the pipe connecting the oil-gas separator An air flow sensor is installed at the waste heat outlet of the flash steam equipment. The air flow sensor is embedded in the outlet of the waste heat outlet of the flash steam equipment, with the monitoring end located inside the outlet and the display end located outside. Similarly, an air flow sensor is installed on the pipe connecting the solar vacuum tube collector 14 and the first circulation pump 15. The air flow sensor is embedded in the pipe, with the monitoring end inside and the display end outside. Finally, an air flow sensor is installed on the pipe connecting the air heat source pump and the solar water tank in the air heat source input group 12. The air flow sensor is embedded in the pipe, with the monitoring end inside.

[0077] Please see Figure 3 and Figure 4 The solar water tank heat exchange group 9, used to realize the exchange of heat between the first solar water tank 7 and the second solar water tank 8, includes a second heat exchanger 20 and a second air pump 21. The first solar water tank 7 is connected to the second solar water tank 8 through the second heat exchanger 20 and the second air pump 21. The second heat exchanger 20 and the second air pump 21 are electrically connected to the temperature monitors on the first solar water tank 7 and the second solar water tank 8, respectively, through a first controller.

[0078] In practical applications, during the heat exchange process between the first solar water tank 7 and the second solar water tank 8, the first controller controls the second heat exchanger 20 and the second air pump 21 to be in working condition. Under the suction action of the second air pump 21, the heat in the first solar water tank 7, which has higher heat, will flow into the second solar water tank 8, which has lower heat, after heat exchange through the second heat exchanger 20, or the heat in the second solar water tank 7, which has higher heat, will flow into the first solar water tank 8, which has lower heat, after heat exchange through the second heat exchanger 20. In this way, the temperature of the first solar water tank 7 and the temperature of the second solar water tank 8 are adjusted to be approximately balanced, so as to achieve the energy supply of temperature difference balance control between the solar water tanks.

[0079] It should be noted that the first solar water tank 7 is connected to the second solar water tank 8 through the second heat exchanger 20 and the second air pump 21. That is, the first solar water tank 7 is connected to the second solar water tank 8 through a pipe equipped with the second heat exchanger 30 and the second air pump 21.

[0080] It should be noted that the temperature monitor is a temperature sensor; the temperature sensor is embedded in the first solar water tank 7, with the monitoring end located inside the first solar water tank 7 and the display end located outside the first solar water tank 7; the temperature sensor is also embedded in the second solar water tank 7, with the monitoring end located inside the second solar water tank 7 and the display end located outside the second solar water tank 7; the first controller is a PLC controller.

[0081] This application proposes a control method for a multi-source industrial waste heat and solar energy co-heating system in its second aspect. Please refer to [link / reference needed]. Figure 8 , Figure 5 , Figure 6 and Figure 7 A control method for a multi-source industrial waste heat and solar energy co-heating system includes the following steps:

[0082] S110. After the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, and the air heat source input group 12 respectively input heat into the first solar water tank 7 and the second solar water tank 8, the light intensity data at this time is obtained. Based on the light intensity data, the first light intensity threshold, and the second light intensity threshold, the states of heat input from each solar vacuum tube heat collection input group 11 to the first solar water tank 7 and the second solar water tank 8 are controlled, as detailed in steps S1.1 to S1.4:

[0083] S1.1 After heat is input into the first solar water tank 7 via the condensate waste heat direct transmission group 2, flash steam waste heat direct transmission group 3, and air heat source input group 12 corresponding to the first solar water tank 7, and heat is input into the second solar water tank 8 via the condensate waste heat direct transmission group 2, flash steam waste heat direct transmission group 3, and air heat source input group 12 corresponding to the second solar water tank 8, the light intensity data at this time is obtained by the light sensor 13. The first controller compares the light intensity data with the first light intensity threshold and the second light intensity threshold preset in the first controller, respectively.

[0084] The first light intensity threshold is a light intensity ≥ 500 W / m². 2 The second light intensity threshold is light intensity <300w / m². 2 .

[0085] S1.2 If the light intensity data is greater than or equal to the first light intensity threshold, the first circulation pump 15 in each solar vacuum tube heat collection input group 11 is turned on by the first controller, and the solar vacuum tube collector 14 in each solar vacuum tube heat collection input group 11 inputs heat to the heat input terminal of the first solar water tank 7 and the heat input terminal of the second solar water tank 8 respectively; at the same time, the process of steps S1.1 to S1.2 is repeated.

[0086] S1.3 If the light intensity data is less than the first light intensity threshold and also less than the second light intensity threshold, the first controller controls the first circulation pump 15 in each solar vacuum tube heat collection input group 11 to shut down, and the solar vacuum tube collector 14 in each solar vacuum tube heat collection input group 11 will not input heat to the heat input terminal of the first solar water heater 7; at the same time, the process from step S1.1 to step S1.3 is repeated.

[0087] S1.4 If the light intensity data is less than the first light intensity threshold and greater than the second light intensity threshold, the first circulation pump 15 in each solar vacuum tube heat collection input group 11 is controlled by the first controller to maintain the current state; at the same time, the process from step S1.1 to step S1.4 is repeated; wherein, the first circulation pump 15 is kept in the current state as the off state.

[0088] S120. After heat is input into the first solar water tank 7 and the second solar water tank 8 for a period of time through the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the air heat source input group 12, and the solar vacuum tube collector input group 11, if the temperature of the first solar water tank 7 and the second solar water tank 8 does not reach the required level and the energy of the above three is insufficient, the following data are obtained: temperature data of the first solar water tank, temperature data of the second solar water tank, waste heat supply data of the condensate waste heat direct transmission group, waste heat supply data of the flash steam waste heat direct transmission group, waste heat supply data of the solar vacuum tube collector, and waste heat supply data of the air heat source input group. Based on the temperature data of the first solar water heater, the temperature data of the second solar water heater, the waste heat supply data of the condensate waste heat direct transmission group, the waste heat supply data of the flash steam waste heat direct transmission group, the waste heat supply data of the solar vacuum tube collector, the waste heat supply data of the air heat source input group, the first temperature threshold, the second temperature threshold, and the temperature difference data between the first solar water heater 7 and the second solar water heater 8, the system controls the state of heat input from each air compressor waste heat group 4 to the first solar water heater 7 and the second solar water heater 8, as detailed in steps S2.1 to S2.9:

[0089] S2.1 After the condensate waste heat direct transmission group 2, flash steam waste heat direct transmission group 3, air heat source input group 12, and solar vacuum tube heat collection input group 11 respectively input heat into the first solar water tank 7 and the second solar water tank 8 for a period of time, if the temperature of the first solar water tank 7 and the second solar water tank 8 does not reach the required level and the energy of the above four sources is insufficient, the temperature monitoring device collects the temperature data of the first solar water tank 7 and the temperature data of the second solar water tank 8. The first controller compares the temperature data of the first solar water tank 7 with the preset first temperature threshold in the first controller and the temperature data of the second solar water tank 8 with the preset first temperature threshold in the first controller; wherein, the first temperature threshold is the solar water tank temperature <55℃.

[0090] S2.2 If the temperature of the first solar water heater 7 is greater than the first temperature threshold, the first controller controls the first heat exchanger 19 and the first air pump in the air compressor waste heat input group 4 corresponding to the first solar water heater 7 to shut down, so that the heat stored in the buffer storage tank 18 in the air compressor waste heat input group 4 corresponding to the first solar water heater 7 will not be input to the heat input terminal of the first solar water heater 7; at the same time, the process of steps S2.1 to S2.2 is repeated; if the temperature of the second solar water heater 8 is greater than the first temperature threshold, the first controller controls the first heat exchanger 19 and the first air pump in the air compressor waste heat input group 4 corresponding to the second solar water heater 8 to shut down, so that the heat stored in the buffer storage tank 18 in the air compressor waste heat input group 4 corresponding to the second solar water heater 8 will not be input to the heat input terminal of the second solar water heater 8; at the same time, the process of steps S2.1 to S2.2 is repeated.

[0091] S2.3 If the temperature of the first solar water tank 7 is lower than the first temperature threshold, the waste heat supply monitor determines whether the waste heat supply of the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12 corresponding to the first solar water tank 7 is sufficient; if the temperature of the second solar water tank 7 is lower than the first temperature threshold, the waste heat supply monitor determines whether the waste heat supply of the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the solar vacuum tube collector 14, and the air heat source input group 12 corresponding to the second solar water tank 8 is sufficient.

[0092] S2.4 If the waste heat supply of the condensate waste heat direct transmission group 2 corresponding to the first solar water tank 7 is sufficient, the flash steam waste heat direct transmission group 3 corresponding to the first solar water tank 7 is sufficient, the waste heat supply of the solar vacuum tube collector 14 corresponding to the first solar water tank 7 is sufficient, and the waste heat supply of the air heat source input group 12 corresponding to the first solar water tank 7 is sufficient, then maintain the current heating state; at the same time, repeat steps S2.1 to S2.4. If the waste heat supply of the condensate waste heat direct transmission group 2 corresponding to the second solar water tank 8 is sufficient, the waste heat supply of the flash steam waste heat direct transmission group 3 corresponding to the second solar water tank 8 is sufficient, the waste heat supply of the solar vacuum tube collector 14 corresponding to the second solar water tank 8 is sufficient, and the waste heat supply of the air heat source input group 12 corresponding to the second solar water tank is sufficient, then maintain the current heating state; at the same time, repeat steps S2.1 to S2.4.

[0093] S2.5 If the waste heat supply of the condensate waste heat direct transmission group 2 corresponding to the second solar water tank 8 is insufficient, and the flash steam waste heat direct transmission group 3 corresponding to the second solar water tank 8 is insufficient, and the waste heat supply of the solar vacuum tube collector 14 corresponding to the second solar water tank 8 is insufficient, and the waste heat supply of the air heat source input group corresponding to the second solar water tank 8 is insufficient...

[0094] If the waste heat supply monitor controls the first heat exchanger 19 and the first air pump in the air compressor waste heat input group 4 corresponding to the second solar water tank 8 to start via the first controller, the heat stored in the buffer storage box 18 in the air compressor waste heat input group 4 corresponding to the second solar water tank 8 will be input to the heat input terminal of the second solar water tank 8; if the waste heat supply of the condensate waste heat direct transmission group 2 corresponding to the first solar water tank 7 is insufficient and the flash steam waste heat direct transmission group 3 corresponding to the first solar water tank 7 is insufficient, and... If the waste heat supply of the solar vacuum tube collector 14 corresponding to the first solar water tank 7 is insufficient and the waste heat supply of the air heat source input group 12 corresponding to the first solar water tank is also insufficient, the waste heat supply monitor will control the first heat exchanger 19 and the first air pump in the air compressor waste heat input group 4 corresponding to the first solar water tank 7 to start through the first controller, and the heat stored in the buffer heat storage box 18 in the air compressor waste heat input group 4 corresponding to the first solar water tank 7 will be input to the heat input end of the first solar water tank 7.

[0095] S2.6 After the heat stored in the buffer storage box 18 of the air compressor waste heat input group 4 corresponding to the second solar water tank 8 is input to the heat input terminal of the second solar water tank 8, and after the heat stored in the buffer storage box 18 of the air compressor waste heat input group 4 corresponding to the first solar water tank 7 is input to the heat input terminal of the first solar water tank 7, the temperature data of the first solar water tank 7 and the second solar water tank 8 are collected again by the temperature monitor.

[0096] S2.7. Based on the temperature data of the first solar water heater 7 and the second solar water heater 8 collected again, the first controller calculates the temperature difference between the first solar water heater 7 and the second solar water heater 8, and compares the temperature difference between the first solar water heater 7 and the second solar water heater 8 with the second temperature threshold 1 preset in the first controller, or compares the temperature of the first solar water heater 7 and the second solar water heater 8 collected again with the second temperature threshold 2 preset in the first controller respectively; wherein, the second temperature threshold 1 is: △t≤3℃; the second temperature threshold 2 is: T≥58℃.

[0097] S2.8 If the temperature of the first solar water heater 7 is greater than or equal to the second temperature threshold 2, or if the temperature difference between the first solar water heater 7 and the second solar water heater 8 is less than or equal to the second temperature threshold 1, then the first controller controls the first heat exchanger 19 and the second air pump 21 in the air compressor waste heat input group 4 corresponding to the first solar water heater to shut down. The heat stored in the buffer storage tank 18 in the air compressor waste heat input group 4 corresponding to the first solar water heater 7 will not be input to the heat input terminal of the first solar water heater 7. Simultaneously, the process of steps S2.1 to S2.8 is repeated. If the temperature of the second solar water tank 7 is greater than or equal to the second temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is less than or equal to the second temperature threshold 1, then the first controller controls the first heat exchanger 19 and the second air pump 21 in the air compressor waste heat input group 4 corresponding to the second solar water tank 8 to be shut down, and the heat stored in the buffer heat storage box 18 in the air compressor waste heat input group 4 corresponding to the second solar water tank 8 will not be input to the heat input terminal of the second solar water tank 7; at the same time, the process of steps S2.1 to S2.8 is repeated.

[0098] S2.9 If the temperature of the first solar water tank 7 is less than the first temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is greater than or equal to the second temperature threshold 1, then repeat steps S2.5 to S2.9; if the temperature of the second solar water tank 8 is less than the first temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is greater than or equal to the second temperature threshold 1, then repeat steps S2.5 to S2.9; if the temperature of the first solar water tank 7 is less than the first temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is less than or equal to the second temperature threshold 1, then repeat steps S2.5 to S2.9. The process is as follows: If the temperature of the second solar water tank 8 is less than the first temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is less than the second temperature threshold 1, then the process from step S2.5 to step S2.9 is repeated; if the temperature of the first solar water tank 7 is greater than or equal to the first temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is less than the second temperature threshold 1, then the process from step S2.5 to step S2.9 is repeated; if the temperature of the second solar water tank 8 is greater than or equal to the first temperature threshold 2, or if the temperature difference between the first solar water tank 7 and the second solar water tank 8 is less than the second temperature threshold 1, then the process from step S2.5 to step S2.9 is repeated.

[0099] S130: After each air compressor waste heat group 4 supplies heat to the first solar water heater 7 and the second solar water heater 8 respectively, based on the temperature difference data between the first solar water heater 7 and the second solar water heater 8, the first temperature difference threshold, and the second temperature difference threshold, the solar water heater heat exchange group is controlled to transfer heat from the first solar water heater 7 to the second solar water heater 8 or from the second solar water heater 8 to the first solar water heater 7, specifically as described in steps S3.1 to S3.6:

[0100] S3.1 After each air compressor waste heat group 4 supplies heat to the first solar water heater 7 and the second solar water heater 8 respectively, the temperature data of the first solar water heater 7 and the second solar water heater 8 are collected by the temperature monitor. The first controller then calculates the temperature difference between the first solar water heater 7 and the second solar water heater 8 based on the temperature data of the first solar water heater 7 and the second solar water heater 8, and compares the temperature difference between the first solar water heater 7 and the second solar water heater 8 with the first temperature difference threshold preset in the first controller; wherein, the first temperature threshold is △T>5℃;

[0101] S3.2 If the temperature difference between the first solar water heater 7 and the second solar water heater 8 is less than the first temperature difference threshold, the first controller controls the second heat exchanger 20 and the second air pump 21 in the solar water heater heat exchange group 9 to shut down, so that the first solar water heater 7 will not send heat to the second solar water heater 8 or the second solar water heater 8 will not send heat to the first solar water heater 7; at the same time, the process from step S3.1 to step S3.2 is repeated.

[0102] S3.3 If the temperature difference between the first solar water heater 7 and the second solar water heater 8 is greater than the first temperature difference threshold, the second heat exchanger 20 and the second air pump 21 in the solar water heater heat exchange group 9 are turned on by the first controller. The high-temperature first solar water heater 7 sends heat to the low-temperature second solar water heater 8, or the high-temperature second solar water heater 8 sends heat to the low-temperature first solar water heater 7.

[0103] S3.4 After the first solar water heater 7, which is at a high temperature, transfers heat to the second solar water heater 8, which is at a low temperature, or the second solar water heater 8, which is at a high temperature, transfers heat to the first solar water heater 7, the temperature monitoring device collects the temperature data of the first solar water heater 7 and the second solar water heater 8 again. The first controller then calculates the temperature difference between the first solar water heater 7 and the second solar water heater 8 based on the re-collected temperature data of the first solar water heater 7 and the second solar water heater 8, and compares the temperature difference between the first solar water heater 7 and the second solar water heater 8 with the second temperature threshold preset in the first controller; wherein, the second temperature threshold is △T≤3℃.

[0104] S3.5 If the temperature difference between the first solar water heater 7 and the second solar water heater 8 is greater than the second temperature threshold, then repeat steps S3.3 to S3.5.

[0105] S3.6 If the temperature difference between the first solar water heater 7 and the second solar water heater 8 is greater than or equal to the second temperature threshold, the first controller controls the second heat exchanger 20 and the second air pump 21 in the solar water heater heat exchange group 9 to shut down, so that the first solar water heater 7 will not send heat to the second solar water heater 8 or the second solar water heater 8 will not send heat to the first solar water heater 7; at the same time, the process of steps S3.1 to S3.6 above is repeated.

[0106] The technical solution of this invention first involves inputting heat into the first solar water tank 7 and the second solar water tank 8 via the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, and the air heat source input group 12, respectively. Then, it acquires the light intensity data at this time. Based on the light intensity data, a first light intensity threshold, and a second light intensity threshold, it controls the state of heat input from each solar vacuum tube collector input group 11 into the first solar water tank 7 and the second solar water tank 8. Next, after the condensate waste heat direct transmission group 2, the flash steam waste heat direct transmission group 3, the air heat source input group 12, and the solar vacuum tube collector input group 11 have input heat into the first solar water tank 7 and the second solar water tank 8 for a period of time, and the temperatures of the first solar water tank 7 and the second solar water tank 8 do not reach the required levels and the energy from the above three sources is insufficient, it acquires the temperature data of the first solar water tank, the temperature data of the second solar water tank, the waste heat supply data of the condensate waste heat direct transmission group, the waste heat supply data of the flash steam waste heat direct transmission group, and the waste heat supply data of the solar vacuum tube collector. Based on data from the waste heat supply of the air heat source input group, including temperature data from the first solar water heater tank, the second solar water heater tank, the condensate waste heat direct transmission group, the flash steam waste heat direct transmission group, the solar vacuum tube collector, the air heat source input group, a first temperature threshold, a second temperature threshold, and the temperature difference between the first solar water heater tank 7 and the second solar water heater tank 8, the system controls the input of heat from each air compressor waste heat group 4 to the first solar water heater tank 7 and the second solar water heater tank 8. Finally, after each air compressor waste heat group 4 supplies heat to the first solar water heater tank 7 and the second solar water heater tank 8, based on the temperature difference between the first and second solar water heater tanks 7 and 8, the first temperature difference threshold, and the second temperature difference threshold, the system controls the solar water heater heat exchange group to transfer heat from the first solar water heater tank 7 to the second solar water heater tank 8 or vice versa.

[0107] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A multi-source industrial waste heat and solar energy co-heating system, characterized in that: include The industrial waste heat transfer unit (1) includes a condensate waste heat direct transfer group (2), a flash steam waste heat direct transfer group (3) and an air compressor waste heat input group (4). The output ends of the condensate waste heat direct transfer group (2), the flash steam waste heat direct transfer group (3) and the air compressor waste heat input group (4) are respectively connected to the input end of the heat storage unit (6). The heat storage unit (6) includes a temperature monitor, a first solar water tank (7), a second solar water tank (8), and a solar water tank heat exchange group (9); the output ends of the air compressor waste heat input group (2), the flash steam waste heat direct input group (3), and the air compressor waste heat input group (4) are respectively connected to the input end of the first solar water tank (7) and the second solar water tank (7); the output ends of the first solar water tank (7) and the second solar water tank (8) are respectively connected to the input end of the heating network; the first solar water tank (7) is also connected to the second solar water tank (8) through the solar water tank heat exchange group (9); the first solar water tank (7) and the second solar water tank (8) are respectively equipped with temperature monitors; the two temperature monitors are electrically connected to the air compressor waste heat input group (4) and the solar water tank heat exchange group (9) through the first controller. The clean energy heat transfer unit (10) includes a solar vacuum tube heat collection input group (11), an air heat source input group (12), and a light sensor (13). The output ends of the solar vacuum tube heat collection input group (11) and the air heat source input group (12) are connected to the input ends of the first solar water tank (7) and the second solar water tank (8). The light sensor (13) is electrically connected to the solar vacuum tube heat collection input group (11) through the first controller.

2. The multi-source industrial waste heat and solar energy synergistic heating system according to claim 1, characterized in that: The solar vacuum tube heat collection input group (11) includes a solar vacuum tube heat collector (14) and a first circulation pump (15); the output end of each solar vacuum tube heat collector (14) is connected to the input end of each first circulation pump (15), the output end of each first circulation pump (15) is connected to the input ends of the first solar water tank (7) and the second solar water tank (8) respectively, and each first circulation pump (15) is electrically connected to each light sensor (13) through a first controller.

3. The multi-source industrial waste heat and solar energy synergistic heating system according to claim 1, characterized in that: The air heat source input group (12) is an air heat source pump.

4. The multi-source industrial waste heat and solar energy synergistic heating system according to claim 1, characterized in that: The air compressor waste heat input group (4) includes an air compressor waste heat group (16), an oil-gas separator (17), a buffer heat storage box (18), and a first heat exchanger (19). The output end of each air compressor waste heat group (16) is connected to the input end of each buffer heat storage box (18) through each oil-gas separator (17). The output end of each buffer heat storage box (18) is connected to the first solar water heater (7) and the second solar water heater (8) through the first heat exchanger (19) and the first air pump, respectively. Each first heat exchanger (19) and each first air pump are electrically connected to the temperature monitor on the first solar water heater (7) and the temperature detector on the second solar water heater (8) through the first controller.

5. The multi-source industrial waste heat and solar energy synergistic heating system according to claim 4, characterized in that: Waste heat supply monitors are installed on the air compressor waste heat group (4), the condensate waste heat direct transmission group (2), the flash steam waste heat direct transmission group (3), the solar vacuum tube collector (14), and the air heat source input group (12). The waste heat supply monitors are electrically connected to the first controller.

6. The multi-source industrial waste heat and solar energy synergistic heating system according to claim 1, characterized in that: The solar water heater heat exchange group (9) includes a second heat exchanger (20) and a second air pump (21). The first solar water heater (7) is connected to the second solar water heater (8) through the second heat exchanger (20) and the second air pump (21). The second heat exchanger (20) and the second air pump (21) are electrically connected to the temperature monitor on the first solar water heater (7) and the temperature monitor on the second solar water heater (8) respectively through the first controller.

7. The control method for the multi-source industrial waste heat and solar energy synergistic heating system according to any one of claims 1-6, characterized in that: Includes the following steps: S1. After the condensate waste heat direct transmission group (2), the flash steam waste heat direct transmission group (3) and the air heat source input group (12) respectively input heat into the first solar water tank (7) and the second solar water tank (8), the light intensity data at this time is obtained. Based on the light intensity data, the first light intensity threshold and the second light intensity threshold, the state of each solar vacuum tube heat collection input group (11) inputting heat into the first solar water tank (7) and the state of the second solar water tank (8) are controlled. S2. After the condensate waste heat direct transmission group (2), flash steam waste heat direct transmission group (3), air heat source input group (12), and solar vacuum tube collector input group (11) input heat into the first solar water tank (7) and the second solar water tank (8) for a period of time, if the temperature of the first solar water tank (7) and the second solar water tank (8) does not meet the requirements and the energy of the above three is insufficient, the temperature data of the first solar water tank, the temperature data of the second solar water tank, the waste heat supply data of the condensate waste heat direct transmission group, the waste heat supply data of the flash steam waste heat direct transmission group, the waste heat supply data of the solar vacuum tube collector, and the waste heat function data of the air heat source input group are obtained. Based on the first solar water tank... The data includes the temperature data of the hot water tank, the temperature data of the second solar hot water tank, the waste heat supply data of the condensate waste heat direct transmission group, the waste heat supply data of the flash steam waste heat direct transmission group, the waste heat supply data of the solar vacuum tube collector, the waste heat function data of the air heat source input group, the first temperature threshold, the second temperature threshold, and the temperature difference data between the first solar hot water tank (7) and the second solar hot water tank (8). These data are used to control the state of each air compressor waste heat group (4) inputting heat into the first solar hot water tank (7) and the state of inputting heat into the second solar hot water tank (8). The first temperature threshold is the first temperature threshold of the solar water tank, and the second temperature threshold is the second temperature threshold of the solar water tank. S3. After each air compressor waste heat group (4) supplies heat to the first solar water tank (7) and the second solar water tank (8) respectively, based on the temperature difference data between the first solar water tank (7) and the second solar water tank (8), the first temperature difference threshold and the second temperature difference threshold are used to control the solar water tank heat exchange group to exchange heat from the first solar water tank (7) to the second solar water tank (8) or from the second solar water tank (8) to the first solar water tank (7); wherein, the first temperature difference threshold is the first temperature threshold of the solar water tank; the second temperature difference threshold is the second temperature threshold of the solar water tank.

8. The control method for the multi-source industrial waste heat and solar energy synergistic heating system according to claim 7, characterized in that: In step S1, after the condensate waste heat direct transmission group (2), the flash steam waste heat direct transmission group (3), and the air heat source input group (12) respectively input heat into the first solar water tank and the second solar water tank, the light intensity data at this time is obtained. Based on the light intensity data, the first light intensity threshold, and the second light intensity threshold, the states of heat input into the first solar water tank and the states of heat input into the second solar water tank by each solar vacuum tube heat collection input group are controlled, including the following steps: S1.1, in the condensate water waste heat direct input group (2), the flash steam waste heat direct input group (3) and the air heat source input group (12) corresponding to the first solar water tank (7) and the second solar water tank (8), after the heat is input into the first solar water tank (7) and the second solar water tank (7), the light intensity data at this time is obtained through the light sensor (13), and the first controller is compared with the first light intensity threshold value and the second light intensity threshold value preset in the first controller based on the light intensity data respectively; wherein the first light intensity threshold value is light intensity≥500w / m 2 ; the second light intensity threshold value is light intensity<300w / m 2 ; S1.2 If the light intensity data is greater than or equal to the first light intensity threshold, the first circulation pump (15) in each solar vacuum tube heat collection input group (11) is turned on by the first controller, and the solar vacuum tube collector (14) in each solar vacuum tube heat collection input group (11) inputs heat to the heat input end of the first solar water tank (7) and the heat input end of the second solar water tank (8) respectively; at the same time, the process from S1.1 to S1.2 is repeated. S1.3 If the light intensity data is less than the first light intensity threshold and also less than the second light intensity threshold, the first circulation pump (15) in each solar vacuum tube heat collection input group (11) is controlled by the first controller to shut down both of them. The solar vacuum tube collector (14) in each solar vacuum tube heat collection input group (11) will not input heat to the heat input terminal of the first solar water tank (7) and the heat input terminal of the first solar water tank (7) will not input heat. At the same time, the process from S1.1 to S1.3 is repeated. S1.4 If the light intensity data is less than the first light intensity threshold and also greater than the second light intensity threshold, the first circulation pump (15) in each solar vacuum tube heat collection input group (11) is controlled by the first controller to maintain the current state; at the same time, the process from S1.1 to S1.4 is repeated.

9. The control method for the multi-source industrial waste heat and solar energy synergistic heating system according to claim 7, characterized in that: S2, after the condensate waste heat direct transmission group, flash steam waste heat direct transmission group, air heat source input group, and solar vacuum tube collector input group input heat into the first solar water tank and the second solar water tank for a period of time, if the temperature of the first solar water tank and the second solar water tank fails to meet the requirements and the energy of the above three is insufficient, the following steps are taken: temperature data of the first solar water tank, temperature data of the second solar water tank, waste heat supply data of the condensate waste heat direct transmission group, waste heat supply data of the flash steam waste heat direct transmission group, waste heat supply data of the solar vacuum tube collector, and waste heat function data of the air heat source input group. Based on the temperature data of the first solar water tank, temperature data of the second solar water tank, waste heat supply data of the condensate waste heat direct transmission group, waste heat supply data of the flash steam waste heat direct transmission group, waste heat supply data of the solar vacuum tube collector, waste heat function data of the air heat source input group, first temperature threshold, second temperature threshold, and temperature difference data between the first solar water tank and the second solar water tank, the state of heat input from each air compressor waste heat group to the first solar water tank and the state of heat input to the second solar water tank are controlled, including the following steps: S2.1 After the condensate waste heat direct transmission group (2), flash steam waste heat direct transmission group (3), air heat source input group (12) and solar vacuum collector tube input group (11) respectively input heat into the first solar water tank (7) and the second solar water tank (8) for a period of time, if the temperature of the first solar water tank (7) and the second solar water tank (8) does not meet the requirements and the energy of the above four is insufficient, the temperature data of the first solar water tank (7) and the temperature data of the second solar water tank (8) are collected by the temperature monitor. The first controller compares the temperature data of the first solar water tank (7) with the first temperature threshold preset in the first controller and the temperature data of the second solar water tank (8) with the first temperature threshold preset in the first controller; wherein, the first temperature threshold is the solar water tank temperature <55℃; S2.2 If the temperature of the first solar water heater (7) is greater than the first temperature threshold, the first controller controls the first heat exchanger (19) and the first air pump in the air compressor waste heat input group (4) corresponding to the first solar water heater (7) to shut down, and the heat stored in the buffer storage tank (18) in the air compressor waste heat input group (4) corresponding to the first solar water heater (7) will not be input to the heat input end of the first solar water heater (7); at the same time, the process from S2.1 to S2.2 is repeated; If the temperature of the second solar water heater (8) is greater than the first temperature threshold, the first controller controls the first heat exchanger (19) and the first air pump in the air compressor waste heat input group (4) corresponding to the second solar water heater (8) to shut down, and the heat stored in the buffer storage tank (18) in the air compressor waste heat input group (4) corresponding to the second solar water heater (8) will not be input to the heat input end of the second solar water heater (8); at the same time, the process from S2.1 to S2.2 is repeated; S2.3 If the temperature of the first solar water heater (7) is less than the first temperature threshold, the waste heat supply monitor determines whether the waste heat supply of the condensate waste heat direct transmission group (2), the flash steam waste heat direct transmission group (3), the solar vacuum tube collector (14), and the air heat source input group (12) corresponding to the first solar water heater (7) is sufficient; if the temperature of the second solar water heater (7) is less than the first temperature threshold, the waste heat supply monitor determines whether the waste heat supply of the condensate waste heat direct transmission group (2), the flash steam waste heat direct transmission group (3), the solar vacuum tube collector (14), and the air heat source input group (12) corresponding to the second solar water heater (8) is sufficient. S2.4 If the waste heat supply of the condensate waste heat direct transmission group (2) corresponding to the first solar water tank (7) is sufficient, the flash steam waste heat direct transmission group (3) corresponding to the first solar water tank (7) is sufficient, the waste heat supply of the solar vacuum tube collector (14) corresponding to the first solar water tank (7) is sufficient, and the waste heat supply of the air heat source input group corresponding to the first solar water tank is sufficient, then the current heating state is maintained; at the same time, the process from S2.1 to S2.4 is repeated; if the waste heat supply of the condensate waste heat direct transmission group (2) corresponding to the second solar water tank (8) is sufficient, the waste heat supply of the flash steam waste heat direct transmission group (3) corresponding to the second solar water tank (8) is sufficient, the waste heat supply of the solar vacuum tube collector (14) corresponding to the second solar water tank (8) is sufficient, and the waste heat supply of the air heat source input group corresponding to the second solar water tank (8) is sufficient, then the current heating state is maintained; at the same time, the process from S2.1 to S2.4 is repeated. S2.5 If the waste heat supply of the condensate waste heat direct transmission group (2) corresponding to the second solar water tank (8) is insufficient, and the flash steam waste heat direct transmission group (3) corresponding to the second solar water tank (8) is insufficient, and the waste heat supply of the solar vacuum tube collector (14) corresponding to the second solar water tank (8) is insufficient, and the waste heat supply of the air heat source input group corresponding to the second solar water tank is insufficient, then the waste heat supply monitor controls the first heat exchanger (19) and the first air pump in the air compressor waste heat input group (4) corresponding to the second solar water tank (8) to start through the first controller. The heat stored in the buffer heat storage box (18) in the air compressor waste heat input group (4) corresponding to the second solar water tank (8) will be input to the heat input end of the second solar water tank (8). If the waste heat supply of the condensate waste heat direct transmission group (2) corresponding to the first solar water tank (7) is insufficient, the flash steam waste heat direct transmission group (3) corresponding to the first solar water tank (7) is insufficient, the waste heat supply of the solar vacuum tube collector (14) corresponding to the first solar water tank (7) is insufficient, and the waste heat supply of the air heat source input group corresponding to the first solar water tank (7) is insufficient, then the waste heat supply monitor controls the first heat exchanger (19) and the first air pump in the air compressor waste heat input group (4) corresponding to the first solar water tank (7) to start through the first controller, and the heat stored in the buffer heat storage box (18) in the air compressor waste heat input group (4) corresponding to the first solar water tank (7) will be input to the heat input end of the first solar water tank (7). S2.6 After the heat stored in the buffer heat storage box (18) in the air compressor waste heat input group (4) corresponding to the second solar water tank (8) is input to the heat input end of the second solar water tank (8), and after the heat stored in the buffer heat storage box (18) in the air compressor waste heat input group (4) corresponding to the first solar water tank (7) is input to the heat input end of the first solar water tank (7), the temperature data of the first solar water tank (7) and the second solar water tank (8) are collected again by the temperature monitor. S2.

7. Based on the temperature data of the first solar water tank (7) and the second solar water tank (8) collected again, the first controller calculates the temperature difference between the first solar water tank (7) and the second solar water tank (8), and compares the temperature difference between the first solar water tank (7) and the second solar water tank (8) with the second temperature threshold 1 preset in the first controller, or compares the temperature of the first solar water tank (7) and the temperature of the second solar water tank (8) collected again with the second temperature threshold 2 preset in the first controller respectively; wherein, the second temperature threshold 1 is: △t≤3℃; the second temperature threshold 2 is: T≥58℃. S2.8 If the temperature of the first solar water heater (7) is ≥ the second temperature threshold 2, or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is ≤ the second temperature threshold 1, then the first controller controls the first heat exchanger (19) and the second air pump (21) in the air compressor waste heat input group (4) corresponding to the first solar water heater to be shut down. The heat stored in the buffer heat storage box (18) in the air compressor waste heat input group (4) corresponding to the first solar water heater (7) will not be input to the heat input terminal of the first solar water heater (7). At the same time, the process from S2.1 to S2.8 is repeated. If the temperature of the second solar water tank (7) is greater than or equal to the second temperature threshold, or if the temperature difference between the first solar water tank (7) and the second solar water tank (8) is less than or equal to the second temperature threshold, then the first heat exchanger (19) and the second air pump (21) in the air compressor waste heat input group (4) corresponding to the second solar water tank (8) are shut down by the first controller. The heat stored in the buffer heat storage box (18) in the air compressor waste heat input group (4) corresponding to the second solar water tank (8) will not be input to the heat input end of the second solar water tank (7). At the same time, the process from S2.1 to S2.8 is repeated. S2.9 If the temperature of the first solar water heater (7) is less than the first temperature threshold 2, or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is greater than or equal to the second temperature threshold 1, then repeat the process from S2.5 to S2.9; if the temperature of the second solar water heater (8) is less than the first temperature threshold 2, or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is greater than or equal to the second temperature threshold 1, then repeat the process from S2.5 to S2.9; if the temperature of the first solar water heater (7) is less than the first temperature threshold 2, or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is less than or equal to the second temperature threshold 1, then repeat the process from S2.5 to S2.

9. Process; if the temperature of the second solar water heater (8) is less than the first temperature threshold 2 or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is less than the second temperature threshold 1, then process S2.5 to S2.9 is repeated; if the temperature of the first solar water heater (7) is greater than or equal to the first temperature threshold 2 or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is less than or equal to the second temperature threshold 1, then process S2.5 to S2.9 is repeated; if the temperature of the second solar water heater (8) is greater than or equal to the first temperature threshold 2 or if the temperature difference between the first solar water heater (7) and the second solar water heater (8) is less than or equal to the second temperature threshold 1, then process S2.5 to S2.9 is repeated.

10. The control method for the multi-source industrial waste heat and solar energy synergistic heating system according to claim 7, characterized in that: S3, after each air compressor waste heat group supplies heat to the first solar water heater and the second solar water heater respectively, based on the temperature difference data between the first solar water heater and the second solar water heater, the first temperature difference threshold, and the second temperature difference threshold, controls the solar water heater heat exchange group to transfer heat from the first solar water heater to the second solar water heater or from the second solar water heater to the first solar water heater, including the following steps: S3.1 After each air compressor waste heat group (4) supplies heat to the first solar water tank (7) and the second solar water tank (8) respectively, the temperature data of the first solar water tank (7) and the second solar water tank (8) are collected by the temperature monitor. The first controller calculates the temperature difference between the first solar water tank (7) and the second solar water tank (8) based on the temperature data of the first solar water tank (7) and the second solar water tank (8), and compares the temperature difference between the first solar water tank (7) and the second solar water tank (8) with the first temperature difference threshold preset in the first controller; wherein, the first temperature threshold is △T>5℃; S3.2 If the temperature difference between the first solar water heater (7) and the second solar water heater (8) is less than the first temperature difference threshold, the first controller controls the second heat exchanger (20) and the second air pump (21) in the solar water heater heat exchange group (9) to shut down, so that the first solar water heater (7) will not send heat to the second solar water heater (8) or the second solar water heater (8) will not send heat to the first solar water heater (7); at the same time, the process from S3.1 to S3.2 is repeated. S3.3 If the temperature difference between the first solar water heater (7) and the second solar water heater (8) is greater than the first temperature difference threshold, the second heat exchanger (20) and the second air pump (21) in the solar water heater heat exchange group (9) are turned on by the first controller. The high-temperature first solar water heater (7) sends heat to the low-temperature second solar water heater (8) or the high-temperature second solar water heater (8) sends heat to the low-temperature first solar water heater (7). S3.

4. When the first solar water heater (7) at high temperature sends heat to the second solar water heater (8) at low temperature, or when the second solar water heater (8) at high temperature sends heat to the first solar water heater (7) at low temperature, the temperature data of the first solar water heater (7) and the second solar water heater (8) are collected again by the temperature monitor. The first controller calculates the temperature difference between the first solar water heater (7) and the second solar water heater (8) based on the collected temperature data of the first solar water heater (7) and the second solar water heater (8), and compares the temperature difference between the first solar water heater (7) and the second solar water heater (8) with the second temperature threshold preset in the first controller; wherein, the second temperature threshold is △T≤3℃; S3.5 If the temperature difference between the first solar water heater (7) and the second solar water heater (8) is greater than the second temperature threshold, then the process from S3.3 to S3.5 is repeated. S3.6 If the temperature difference between the first solar water heater (7) and the second solar water heater (8) is greater than or equal to the second temperature threshold, the first controller controls the second heat exchanger (20) and the second air pump (21) in the solar water heater heat exchange group (9) to shut down, so that the first solar water heater (7) will not send heat to the second solar water heater (8) or the second solar water heater (8) will not send heat to the first solar water heater (7); at the same time, the process from S3.1 to S3.6 above is repeated.

Images