A matrix clamp heat recovery control system and method

Abstract

The application provides a matrix clamping heat recovery control system and method, water inlet ends of multiple primary water tanks are connected in parallel, water outlet ends are connected in parallel, water supplement ends and water using ends are connected in sequence one by one, so that the multiple primary water tanks are connected in series; the water supplement end of the first primary water tank is communicated with the water supplement end of a working water tank; the water using end of the working water tank is communicated with the water supplement end of the working water tank through a backwater pipe; the water inlet ends of the multiple primary water tanks are all provided with adjusting valves. The multiple primary water tanks constitute multiple-stage water tanks, and the multiple-stage water tanks are used to realize the purpose of rapid heating; the adjusting valves clamp the primary water tanks to realize the clamping of the multiple-stage water tanks for heating, so that the temperature of the water supplied by the primary water tanks to the working water tank reaches the intermediate temperature; a heat cycle switching mode is adopted, when the solar energy is sufficient, the working water tank is directly heated, so that the waste caused by the secondary heating of the heating furnace is reduced, and the energy utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of energy conservation and environmental protection, and in particular to a matrix clamping heat recovery control system and method. Background Technology

[0002] In recent years, more and more commercial buildings have installed energy-saving and efficient solar water heaters. Solar energy heats domestic hot water "for free." However, due to the fact that solar collectors (or other heat recovery sources) are free heat sources and the heat is unstable, there will be a large deviation between heat recovery and design, which will cause difficulties in engineering selection, slow heating speed, and traditional engineering design and control methods have the characteristics of low actual energy utilization efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a matrix clamping heat recovery control system and method that can improve energy utilization.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] A matrix clamping heat recovery control system includes: a solar collector, a temperature sensor, multiple primary water tanks, a working water tank, regulating valves, and a heating furnace;

[0006] The primary water tank includes a water supply end, a water inlet end, a water outlet end, and a water consumption end. The multiple primary water tanks have their water inlets connected in parallel and their water outlets connected in parallel. The water supply ends and water consumption ends of the multiple primary water tanks are sequentially connected, leaving one water consumption end and one water supply end after the multiple primary water tanks are connected in series. The primary water tank containing the remaining water consumption end is the first primary water tank. The water supply end of the first primary water tank is connected to the water supply end of the working water tank. The remaining water supply end is used to supply water to the multiple primary water tanks and the working water tank. The water consumption end of the working water tank is connected to the water supply end of the working water tank via a return water pipe. The water inlet end of the working water tank is connected to the water outlet end of the heating furnace. The water outlet end of the working water tank is connected to the water inlet end of the heating furnace.

[0007] The water outlet of the solar collector is connected to the water inlet of the primary water tank; the water inlet of the solar collector is connected to the water outlet of the primary water tank.

[0008] The temperature sensors are respectively installed in the plurality of primary water tanks and the working water tank;

[0009] Each of the multiple primary water tanks is equipped with a regulating valve at its inlet.

[0010] Optionally, the regulating valve is a proportional regulating valve.

[0011] Optionally, a three-way valve is also included; the three-way valve is connected to the water supply end of the first-stage water tank, the water supply end of the working water tank, and the return water pipe, respectively.

[0012] Optionally, it also includes a collector circulating water pump and a heater circulating water pump; the collector circulating water pump is installed on the connecting pipeline between the outlet end of the collector and the inlet end of the primary water tank; the heater circulating water pump is installed on the connecting pipeline between the inlet end of the working water tank and the outlet end of the heater.

[0013] Optionally, it also includes an inlet pressure sensor and an outlet pressure sensor; the inlet pressure sensor is installed on the connecting pipe between the outlet of the solar collector and the inlet of the primary water tank; the outlet pressure sensor is installed on the connecting pipe between the inlet of the solar collector and the outlet of the primary water tank.

[0014] A matrix clamping heat recovery control method, the method comprising:

[0015] Set temperature thresholds; the temperature thresholds include: maximum temperature, intermediate temperature, maximum temperature difference, and minimum temperature difference.

[0016] Determine whether the temperatures of multiple primary water tanks meet the set temperature threshold; if not, heat the multiple primary water tanks.

[0017] The heat circulation is switched according to the temperature of the first-stage water tank.

[0018] The working water tank is replenished based on the water pressure data at the inlet and outlet of the first-stage water tank.

[0019] Optionally, heating the multiple primary water tanks specifically includes:

[0020] Determine whether the temperature difference between the solar collector and the current primary water tank is greater than or equal to the highest temperature difference.

[0021] If so, open the regulating valve of the current primary water tank, close the regulating valve of the remaining primary water tanks, and start the collector circulating water pump.

[0022] Determine whether the temperature difference between the solar collector and the current primary water tank is less than or equal to the lowest temperature difference.

[0023] If so, then shut down the collector circulating water pump;

[0024] Determine whether the current primary water tank temperature is greater than the intermediate temperature;

[0025] If so, then control the opening degree of the regulating valve of the primary water tank;

[0026] Determine whether the current temperature of the primary water tank is greater than the maximum temperature;

[0027] If so, then close the regulating valve of the current primary water tank.

[0028] Optionally, the opening degree of the regulating valve controlling the primary water tank specifically includes:

[0029] The opening of the regulating valve of the current primary water tank is gradually reduced by PID control.

[0030] The opening of the regulating valve of the next-level water tank connected in series with the current-level water tank is gradually increased to ensure that the temperature of the current-level water tank is not lower than the intermediate temperature.

[0031] Optionally, the thermal circulation switching based on the temperature of the first-stage water tank specifically includes:

[0032] Determine whether the temperature of the first-stage water tank is lower than the intermediate temperature;

[0033] If so, the three-way valve connects the water supply end of the working water tank to the return water pipe, and the heating furnace circulating water pump is turned on;

[0034] Determine whether the temperature of the first-stage water tank is greater than the intermediate temperature;

[0035] If so, the three-way valve connects the water supply end of the first-stage water tank to the return water pipe, and shuts off the heating furnace circulating water pump.

[0036] Optionally, replenishing the working water tank based on the water pressure data at the inlet and outlet of the first-stage water tank specifically includes:

[0037] The water replenished from the working water tank flows into the plurality of primary water tanks through the remaining replenishment end, and then enters the working water tank through the water consumption end of the first primary water tank.

[0038] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0039] This invention provides a matrix clamping heat recovery control system, comprising: a solar collector, temperature sensors, multiple primary water tanks, a working water tank, regulating valves, and a heating furnace; the inlet ends of the multiple primary water tanks are connected in parallel, the outlet ends are connected in parallel, and the water supply end is sequentially connected to the water consumption end, leaving one water consumption end and one water supply end after the multiple primary water tanks are connected in series; the primary water tank containing the remaining water consumption end is the first primary water tank; the water supply end of the first primary water tank is connected to the water supply end of the working water tank; the water consumption end of the working water tank is connected to the water supply end of the working water tank through a return water pipe; the inlet end of the working water tank is connected to the outlet end of the heating furnace; the outlet end of the working water tank is connected to the inlet end of the heating furnace; the outlet end of the solar collector is connected to the inlet end of the primary water tank; the inlet end of the solar collector is connected to the outlet end of the primary water tank; temperature sensors are respectively installed in the multiple primary water tanks and the working water tank; regulating valves are provided at the inlet ends of the multiple primary water tanks. This invention proposes a system where the inlet and outlet of multiple primary water tanks are connected in parallel, and the water supply and usage ends are sequentially connected, thus creating a multi-stage water tank array. This array of tanks achieves rapid heating. Furthermore, regulating valves at the inlet of each primary tank clamp the water supply to that tank. This multi-stage clamping heating ensures that the water supplied to the working tank from the primary tank reaches an intermediate temperature. Additionally, a heat circulation switching method is employed, allowing direct heating of the working tank when solar energy is abundant, reducing waste from secondary heating in the furnace. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a diagram of the matrix clamping heat recovery control system of the present invention;

[0042] Figure 2 This is a flowchart of the matrix clamping heat recovery control method of the present invention;

[0043] Figure 3 This is a schematic diagram showing the opening ratio of the regulating valve in the matrix clamping heat recovery control system of the present invention;

[0044] Figure 4 This is a schematic diagram showing the closing ratio of the regulating valve in the matrix clamping heat recovery control system of the present invention;

[0045] Figure 5 This is a schematic diagram of the heat preservation and heating water flow path of the matrix clamping heat recovery control system of the present invention;

[0046] Figure 6 This is a schematic diagram of the hot water circulation path in the matrix clamping heat recovery control system of the present invention;

[0047] Figure 7 This is a schematic diagram of the hot water supply path in the matrix clamping heat recovery control system of the present invention.

[0048] Figure 8 Diagram of a traditional solar water heating control system;

[0049] Figure 9 This is a flowchart of a traditional solar water heating control system.

[0050] Symbol explanation:

[0051] Solar collector—1, temperature sensor—2, primary water tank—3, working water tank—4, heating furnace circulating water pump—5, heating furnace—6, solar collector circulating water pump—7, hot water circulating water pump—8, outlet water pressure sensor—9, inlet water pressure sensor—10; regulating valve—11; three-way valve—12. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] The purpose of this invention is to provide a matrix clamping heat recovery control system and method that can improve energy utilization.

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] like Figure 1 As shown, the matrix clamping heat recovery control system provided by the present invention includes: a solar collector 1, a temperature sensor 2, multiple primary water tanks 3, a working water tank 4, a regulating valve 11, and a heating furnace 6.

[0056] Specifically, regulating valve 11 is a proportional regulating valve.

[0057] The primary water tank 3 includes a water supply end, a water inlet end, a water outlet end, and a water consumption end; multiple primary water tanks 3 are connected in parallel at their water inlets and in parallel at their water outlet ends; the water supply ends and water consumption ends of the multiple primary water tanks 3 are connected sequentially, leaving one water consumption end and one water supply end after the multiple primary water tanks 3 are connected in series; the primary water tank 3 containing the remaining water consumption end is the first primary water tank 3; the water supply end of the first primary water tank 3 is connected to the water supply end of the working water tank 4; the remaining water supply end is used to supply water to the multiple primary water tanks 3 and the working water tank 4; the water consumption end of the working water tank 4 is connected to the water supply end of the working water tank 4 through a return water pipe; the water inlet end of the working water tank 4 is connected to the water outlet end of the heating furnace 6; the water outlet end of the working water tank 4 is connected to the water inlet end of the heating furnace 6.

[0058] Specifically, the next water tank 3 connected in series with the first water tank 3 is the second water tank 3; the next water tank 3 connected in series with the second water tank 3 is the third water tank 3; the next water tank 3 connected in series with the third water tank 3 is the fourth water tank 3, and so on until the Nth water tank 3; N is a positive integer greater than or equal to 1.

[0059] The outlet of collector 1 is connected to the inlet of primary water tank 3; the inlet of collector 1 is connected to the outlet of primary water tank 3.

[0060] Temperature sensors 2 are installed in multiple primary water tanks 3 and working water tanks 4.

[0061] Each of the multiple primary water tanks 3 is equipped with a regulating valve 11 at its inlet end.

[0062] Specifically, the regulating valve 11 at the inlet of the first-stage water tank 3 is the first regulating valve 11; the regulating valve 11 at the inlet of the second-stage water tank 3 is the second regulating valve 11; the regulating valve 11 at the inlet of the third-stage water tank 3 is the third regulating valve 11; the regulating valve 11 at the inlet of the fourth-stage water tank 3 is the fourth regulating valve 11; and so on until the regulating valve 11 at the inlet of the Nth-stage water tank 3 is the Nth regulating valve 11; where N is a positive integer greater than or equal to 1.

[0063] In one specific embodiment of the present invention, the matrix clamping heat recovery control system further includes a three-way valve 12; the three-way valve 12 is connected to the water supply end of the first-stage water tank 3, the water supply end of the working water tank 4, and the return water pipe, respectively. Using the three-way valve 12, both the first-stage water tank 3 and the working water tank 4 can be heated simultaneously. Furthermore, through the three-way valve 12, hot water is supplied from the working water tank 4 to the user end, and under the circulation of the heat circulation pump 8, it returns to the working water tank 4 or the first-stage water tank 3 via the return water pipe.

[0064] As a specific embodiment of the present invention, the matrix clamping heat recovery control system further includes a collector circulating water pump 7 and a heater circulating water pump 5; the collector circulating water pump 7 is installed on the connecting pipeline between the outlet end of the collector 1 and the inlet end of the primary water tank 3; the heater circulating water pump 5 is installed on the connecting pipeline between the inlet end of the working water tank 4 and the outlet end of the heater 6.

[0065] As a specific embodiment of the present invention, the matrix clamping heat recovery control system further includes a heat circulation water pump 8; the heat circulation water pump 8 is installed on the hot water circuit.

[0066] As a specific embodiment of the present invention, the matrix clamping heat recovery control system further includes an inlet pressure sensor and an outlet pressure sensor; the inlet pressure sensor is installed on the connecting pipe between the outlet of the collector 1 and the inlet of the primary water tank 3; the outlet pressure sensor is installed on the connecting pipe between the inlet of the collector 1 and the outlet of the primary water tank 3.

[0067] As a specific embodiment of the present invention, the matrix clamping heat recovery control system also includes a controller; specifically, the controller is an industrial computer; the controller is connected to the regulating valve 11, the collector circulating water pump 7, the heating furnace circulating water pump 5 and the heat circulating water pump 8 respectively; the data collected by the temperature sensor 2, the inlet pressure sensor and the outlet pressure sensor are transmitted to the controller.

[0068] like Figure 2 As shown, the matrix clamping heat recovery control method provided by the present invention includes:

[0069] Step 101: Set the maximum temperature; temperature thresholds include: maximum temperature, intermediate temperature, maximum temperature difference, and minimum temperature difference. Temperature thresholds also include the minimum temperature.

[0070] Specifically, during actual operation, the working water tank 4 requires temperature control within a certain range. If the temperature exceeds the limit, customers may easily get scalded when using the faucet. If the temperature is below a certain level, customers will experience discomfort and feel that the water is cold.

[0071] Furthermore, the maximum temperature is set to 50℃; the minimum temperature is set to 42℃; the intermediate temperature is set to 1℃; the maximum temperature difference is set to 12℃; and the minimum temperature difference is set to 3℃.

[0072] The data collected by temperature sensor 2, inlet pressure sensor and outlet pressure sensor are transmitted to the controller; the controller is an industrial computer; the hot water circulation pump 8, the heating furnace circulation pump 5, the solar collector circulation pump 7 and the proportional regulating valve all execute the commands output by the controller after calculation.

[0073] Multiple primary water tanks 3 are arranged in an "array". The heating sequence starts from the first primary water tank 3. When the temperature of the first primary water tank 3 reaches the intermediate temperature of 46℃, the second primary water tank 3 is heated step by step. After the second primary water tank 3 reaches the intermediate temperature of 46℃, the third primary water tank 3 is heated step by step, and so on, until the last primary water tank 3 is heated to the intermediate temperature of 46℃.

[0074] Step 102: Determine whether the temperatures of the multiple primary water tanks meet the set temperature threshold; if not, heat the multiple primary water tanks; specifically including:

[0075] Determine whether the temperature difference between collector 1 and the current primary water tank 3 is greater than or equal to the highest temperature difference. If so, open the regulating valve 11 of the current primary water tank 3, close the regulating valve 11 of the remaining primary water tanks 3, and start the collector circulating water pump 7.

[0076] Specifically, the temperature data collected by the temperature sensor 2 of the solar collector 1 is compared with the temperature data collected by the temperature sensor of the first-stage water tank 3. When the temperature of the solar collector 1 minus the temperature of the first-stage water tank 3 is ≥12℃, the first regulating valve is opened, and the second, third, fourth, ..., Nth regulating valves are closed. At the same time, the solar collector circulating water pump 7 is turned on, and the solar collector 1 heats the first-stage water tank 3.

[0077] Determine whether the temperature difference between collector 1 and the current temperature of primary water tank 3 is less than or equal to the minimum temperature difference; if so, shut down collector circulating water pump 7.

[0078] Specifically, when the temperature of collector 1 minus the temperature of the first-stage water tank 3 is less than or equal to 3°C, the collector circulating water pump 7 stops working and the first regulating valve 11 remains 100% open.

[0079] like Figure 3 and Figure 4 As shown, determine whether the current temperature of the primary water tank 3 is higher than the intermediate temperature; if so, control the opening of the regulating valve 11 of the primary water tank 3; specifically including:

[0080] The opening of the regulating valve 11 of the current primary water tank 3 is gradually reduced by PID control; the opening of the regulating valve 11 of the next primary water tank 3 connected in series with the current primary water tank 3 is gradually increased to ensure that the temperature of the current primary water tank 3 is not lower than the intermediate temperature. It is determined whether the temperature of the current primary water tank 3 is greater than the maximum temperature; if so, the regulating valve 11 of the current primary water tank 3 is closed.

[0081] Specifically, when the temperature of the first stage water tank 3 is higher than the intermediate temperature of 46℃, the controller gradually reduces the opening ratio of the first regulating valve 11 through PID calculation. When the temperature of the first stage water tank 3 is higher than the maximum temperature of 50℃, the first regulating valve 11 is closed.

[0082] Furthermore, as the temperature of the first-stage water tank 3 gradually rises and exceeds the intermediate temperature of 46℃, the controller calculates and opens the second regulating valve 11, controlling its opening ratio. That is, when the temperature of the first-stage water tank 3 is 46℃, the controller outputs a control command that makes the opening ratio of the second regulating valve 11 0. When the temperature of the first-stage water tank 3 is higher than 46℃, the second regulating valve 11 opens proportionally according to the control command output by the controller. While ensuring that the temperature of the first-stage water tank 3 does not fall below 46℃, the controller's PID calculations open the second regulating valve 11 to heat the second-stage water tank 3. When the temperature of the first-stage water tank 3 exceeds 50℃, the first regulating valve 11 is closed, and the second regulating valve 11 and the collector circulating water pump 7 are fully opened to begin heating the second-stage water tank 3. Similarly, the heating steps for the first-stage water tank 3 are repeated for the second-stage water tank 3 until the temperature of the Nth-stage water tank 3 exceeds 50℃, at which point the Nth regulating valve 11 is closed. This completes the heating of multiple primary water tanks 3.

[0083] like Figure 5 and Figure 6 As shown, step 103: switch the heat circulation according to the temperature of the first-stage water tank; specifically including:

[0084] Determine if the temperature of the first-stage water tank 3 is lower than the intermediate temperature; if so, connect the three-way valve 12 to the water supply end of the working water tank 4 and the return water pipe, and start the heating furnace circulating water pump 5.

[0085] When the temperature of the first-stage water tank 3 is lower than the intermediate temperature of 46℃, the three-way valve 12 connects the water supply end of the working water tank 4 with the return water pipe, and turns on the heating furnace circulating water pump 5 to use the heat from the working water tank 4 to "heat and maintain" the pipeline.

[0086] Determine if the temperature of the first-stage water tank 3 is greater than the intermediate temperature; if so, connect the water supply end of the first-stage water tank 3 to the return water pipe with the three-way valve 12, and shut off the heating furnace circulating water pump 5.

[0087] When the temperature of the first-stage water tank 3 exceeds the intermediate temperature of 46℃, the three-way valve 12 connects the water supply end of the first-stage water tank 3 to the return water pipe, shutting off the heating furnace circulating water pump 5. While maintaining the heat and circulating, the heat circulation water pump 8 can be used to heat the working water tank 4 from the first-stage water tank 3. This control method is particularly suitable for hot water systems that use hot water at night, making full use of solar energy and reducing the need to turn on the heating furnace 6.

[0088] like Figure 7 As shown, step 104: Replenish the working water tank with water based on the water pressure data at the inlet and outlet of the first-stage water tank. Specifically, this includes:

[0089] Water replenished to the working water tank 4 flows into multiple primary water tanks 3 through the remaining replenishment end, and then enters the working water tank 4 through the water supply end of the first primary water tank 3.

[0090] Specifically, if the client starts using water, water is first supplied from the working water tank 4. The working water tank 4 is replenished by the first-stage water tank 3. Similarly, the first-stage water tank 3 is replenished by the second-stage water tank 3, the second-stage water tank 3 is replenished by the third-stage water tank 3, and so on. Finally, cold water is replenished from the Nth-stage water tank 3.

[0091] like Figure 8 and Figure 9 As shown, collector 1 is a solar collector 1 or other heat recovery source; primary water tank 3 and working water tank 4 are both volumetric water exchange tanks. The traditional solar water heating control steps are as follows:

[0092] Step 201: Heating the primary water tank.

[0093] Specifically, the process involves comparing the temperature measured by temperature sensor 2 of collector 1 with the temperature measured by temperature sensor 2 of primary water tank 3. When the difference between the temperature of collector 1 and the temperature of primary water tank 3 is ≥ 12℃ (where 12℃ is a settable temperature), the collector circulation pump 7 is activated, using water circulation to heat the primary water tank 3 via collector 1. When the difference between the temperature of collector 1 and the temperature of primary water tank 3 is ≤ 3℃ (where 3℃ is a settable temperature), the collector circulation pump 7 is deactivated. This cycle continues, with collector 1 heating the primary water tank 3.

[0094] Step 202: The working water tank is replenished with water from the primary water tank; when the working water tank temperature is lower than the set temperature, the heating furnace and the heating furnace circulating water pump are turned on to heat the working water tank. The heating furnace is a vacuum gas furnace.

[0095] Step 203: The hot water circulation pump circulates the supply and return water pipes and the working water tank to keep the hot water supply temperature constant within a certain range, ensuring that hot water is available immediately and preventing water waste.

[0096] Therefore, traditional solar water heating systems preheat the primary water tank 3 using collector 1, and then replenish the working water tank 4. By increasing the replenishment temperature of the working water tank 4, energy consumption can be reduced.

[0097] However, due to the fact that collector 1 is a free heat source and the heat is unstable, there will be a large deviation between heat recovery and design, and difficulties in engineering selection. The main situations include the following:

[0098] (1) It is difficult to select the size of the primary water tank 3. When the water tank is too small, the amount of cold energy stored by the collector 1 in the primary water tank 3 is too small when there is sunlight. When the water tank is too large, the heating speed of the solar collector 1 in the primary water tank 3 is slow. When a small amount of water is used, the water replenishment temperature of the primary water tank 3 in the working water tank 4 is too low. The working water tank 4 must start the heating furnace 6 and the heating furnace circulating water pump 5 to heat the working water tank 4.

[0099] (2) The solar collector 1 cannot heat the working water tank 4. The temperature of the working water tank 4 depends on the water supply temperature of the primary water tank 3. When the water supply temperature is lower than the required temperature, the heating furnace circulating water pump 5 and the heating furnace 6 must be started to ensure the temperature of the working water tank 4. Especially during periods when water is not in use, the heating furnace circulating water pump and the heating furnace 6 must be constantly switched on and off in order to "keep the working water tank 4 warm". Moreover, the hot circulating water pump 8 will consume the heat of the working water tank 4, resulting in energy waste.

[0100] This invention proposes a system where the inlet and outlet of multiple primary water tanks are connected in parallel, and the water supply and usage ends are sequentially connected, thus creating a multi-stage water tank array. This array of tanks achieves rapid heating. Furthermore, regulating valves at the inlet of each primary tank clamp the water supply to that tank. This multi-stage clamping heating ensures that the water supplied to the working tank from the primary tank reaches an intermediate temperature. Additionally, a heat circulation switching method is employed, allowing direct heating of the working tank when solar energy is abundant, reducing waste from secondary heating in the furnace.

[0101] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Regarding the methods disclosed in the embodiments, since they correspond to the systems disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the system section description.

[0102] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A matrix clamping heat recovery control method, characterized in that, The method is applied to a matrix clamping heat recovery control system, and the method includes: The primary water tank includes a water supply end, an inlet end, an outlet end, and a water consumption end. Multiple primary water tanks are connected in parallel at their inlet ends and outlet ends. The water supply ends and water consumption ends of the multiple primary water tanks are sequentially connected, leaving one water consumption end and one water supply end after the multiple primary water tanks are connected in series. The primary water tank containing the remaining water consumption end is the first-stage water tank. The water supply end of the first-stage water tank is connected to the water supply end of the working water tank. The remaining water supply end is used to replenish water to the multiple primary water tanks and the working water tank. The water consumption end of the working water tank is connected to the water supply end of the working water tank via a return pipe. The water supply end of the working water tank is connected to the outlet end of the heating furnace. The outlet end of the working water tank is connected to the water supply end of the heating furnace. Set temperature thresholds; the temperature thresholds include: maximum temperature, intermediate temperature, maximum temperature difference, and minimum temperature difference. The process involves determining whether the temperatures of multiple primary water tanks meet the set temperature threshold. If not, heating is then applied to the multiple primary water tanks, specifically including: determining whether the difference between the collector temperature and the current primary water tank temperature is greater than or equal to the highest temperature difference; if so, opening the regulating valve of the current primary water tank, closing the regulating valves of the remaining primary water tanks, and starting the collector circulating water pump; determining whether the difference between the collector temperature and the current primary water tank temperature is less than or equal to the lowest temperature difference; if so, turning off the collector circulating water pump; determining whether the current primary water tank temperature is greater than the intermediate temperature; if so, controlling the opening degree of the regulating valve of the primary water tank; and determining whether the current primary water tank temperature is greater than the highest temperature; if so, closing the regulating valve of the current primary water tank. The heat circulation is switched according to the temperature of the first-stage water tank. The working water tank is replenished based on the water pressure data at the inlet and outlet of the first-stage water tank.

2. The matrix clamping heat recovery control method according to claim 1, characterized in that, The opening degree of the regulating valve controlling the primary water tank specifically includes: The opening of the regulating valve of the current primary water tank is gradually reduced by PID control. The opening of the regulating valve of the next-level water tank connected in series with the current-level water tank is gradually increased to ensure that the temperature of the current-level water tank is not lower than the intermediate temperature.

3. The matrix clamping heat recovery control method according to claim 1, characterized in that, The process of switching the heat circulation based on the temperature of the first-stage water tank specifically includes: Determine whether the temperature of the first-stage water tank is lower than the intermediate temperature; If so, the three-way valve connects the water supply end of the working water tank to the return water pipe, and the heating furnace circulating water pump is turned on; Determine whether the temperature of the first-stage water tank is greater than the intermediate temperature; If so, the three-way valve connects the water supply end of the first-stage water tank to the return water pipe, and shuts off the heating furnace circulating water pump.

4. The matrix clamping heat recovery control method according to claim 1, characterized in that, The process of replenishing the working water tank based on the water pressure data at the inlet and outlet of the first-stage water tank specifically includes: The water replenished from the working water tank flows into the plurality of primary water tanks through the remaining replenishment end, and then enters the working water tank through the water consumption end of the first primary water tank.

5. The matrix clamping heat recovery control method according to claim 1, characterized in that, The matrix clamping heat recovery control system includes: a solar collector, a temperature sensor, multiple primary water tanks, a working water tank, regulating valves, and a heating furnace; The water outlet of the solar collector is connected to the water inlet of the primary water tank; the water inlet of the solar collector is connected to the water outlet of the primary water tank. The temperature sensors are respectively installed in the plurality of primary water tanks and the working water tank; Each of the multiple primary water tanks is equipped with a regulating valve at its inlet.

6. The matrix clamping heat recovery control method according to claim 5, characterized in that, The regulating valve is a proportional regulating valve.

7. The matrix clamping heat recovery control method according to claim 5, characterized in that, It also includes a three-way valve; the three-way valve is connected to the water supply end of the first-stage water tank, the water supply end of the working water tank, and the return water pipe respectively.

8. The matrix clamping heat recovery control method according to claim 5, characterized in that, It also includes a collector circulating water pump and a heater circulating water pump; the collector circulating water pump is installed on the connecting pipeline between the outlet end of the collector and the inlet end of the primary water tank; the heater circulating water pump is installed on the connecting pipeline between the inlet end of the working water tank and the outlet end of the heater.

9. The matrix clamping heat recovery control method according to claim 5, characterized in that, It also includes an inlet pressure sensor and an outlet pressure sensor; the inlet pressure sensor is installed on the connecting pipe between the outlet of the solar collector and the inlet of the primary water tank; the outlet pressure sensor is installed on the connecting pipe between the inlet of the solar collector and the outlet of the primary water tank.

Images