Heat exchange tube control method for graphite electric energy storage device and heating system

Abstract

The present invention discloses a heat exchange tube control method and a heating system for a graphite electric energy storage device. The graphite electric energy storage device includes a graphite electric energy storage module, a heat exchange tube, an inlet header, a flowmeter, a regulating valve, and a processing module. A manual valve and a solenoid valve are provided on the connection section. The inlet header is connected to each connection section, and a flowmeter and a regulating valve are provided on the inlet header. The heat exchange tube control method is characterized in that: the flow rate of each heat exchange tube is initialized by using the flowmeter, the regulating valve, the manual valve, and the solenoid valve; the processing module obtains the temperature value of each layer of the graphite electric energy storage module and obtains the flow rate value of the heat exchange tube by using the flowmeter; the processing module obtains a flow rate adjustment parameter according to the temperature value and the flow rate value; and the regulating valve is adjusted by using the flow rate adjustment parameter. The present invention can enable the heat exchange tube to work in a better state, improve the heat exchange efficiency, adjust the dryness in the heat exchange tube, and make the operation of the heat exchange tube more stable and safe.

Description

Technical Field

[0001] The present invention relates to a heat exchange tube control method for a graphite electric energy storage device and a heating system. Background Art

[0002] A heating system generally refers to a boiler room boiler, a heat exchange unit, an outdoor heating pipeline, and a radiator.

[0003] The heating system is beginning to transform towards intelligence and low carbonization. In this process, graphite is often used for electric energy storage.

[0004] Graphite is an allotrope of carbon, a grayish-black, opaque solid with stable chemical properties, corrosion resistance, and is not easily reactive with chemicals such as acids and alkalis. Natural graphite comes from graphite deposits or can be made into artificial graphite using petroleum coke, pitch coke, etc. as raw materials through a series of processes. Graphite burns in oxygen to form carbon dioxide and can be oxidized by strong oxidants such as concentrated nitric acid and potassium permanganate. It can be used as an anti-wear agent, lubricant, high-purity graphite is used as a neutron moderator in atomic reactors, and can also be used to manufacture crucibles, electrodes, brushes, dry batteries, graphite fibers, heat exchangers, coolers, electric arc furnaces, arc lamps, the lead of pencils, etc.

[0005] In particular, graphite, as a good heat storage material, is suitable for regenerative heat exchangers.

[0006] The existing graphite electric energy storage device has low heat exchange efficiency and large dryness changes in the heat exchange tubes, resulting in noise and safety hazards during equipment operation. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of low heat exchange efficiency of the existing graphite electric energy storage device, large dryness changes in the heat exchange tubes, and noise and safety hazards during equipment operation, and to provide a heat exchange tube control method and a heating system for a graphite electric energy storage device that can make the heat exchange tubes work in a better state, improve the heat exchange efficiency, adjust the dryness in the heat exchange tubes, and make the operation of the heat exchange tubes more stable and safe.

[0008] The present invention solves the above technical problem through the following technical solutions:

[0009] A heat exchange tube control method for a graphite electric energy storage device, the graphite electric energy storage device includes several layers of stacked graphite electric energy storage modules, several parallel heat exchange tubes, an inlet main pipe, at least one flow meter, at least one regulating valve, and a processing module. Each heat exchange tube includes a heat exchange section and a connection section. A manual valve and a solenoid valve are provided on the connection section. The inlet main pipe is connected to each connection section. A flow meter and a regulating valve are provided on the inlet main pipe. The heat exchange tube control method includes:

[0010] Initialize the flow rate of each heat exchange tube using a flow meter, a regulating valve, a manual valve, and a solenoid valve;

[0011] The processing module obtains the temperature value of each layer of graphite electric energy storage module and obtains the flow rate value of the heat exchange tube using a flow meter;

[0012] The processing module obtains a flow rate adjustment parameter according to the temperature value and the flow rate value;

[0013] Adjust the regulating valve using the flow rate adjustment parameter.

[0014] Preferably, the step of initializing the flow rate of each heat exchange tube using a flow meter, a regulating valve, a manual valve, and a solenoid valve includes:

[0015] Set the regulating valve to a preset value, where the preset value is less than the maximum flow rate value of the regulating valve;

[0016] For the manual valve on a target connection segment, open the solenoid valve on the target connection segment and close the solenoid valves on all connection segments other than the target connection segment, and adjust the manual valve to the target adjustment amount according to the flow rate value of the flow meter;

[0017] Adjust the manual valve on each connection segment to the target adjustment amount.

[0018] Preferably, the step that the processing module obtains a flow rate adjustment parameter according to the temperature value and the flow rate value includes:

[0019] The processing module obtains the target heat exchange tube in the working state according to the solenoid valve switch state;

[0020] Obtain the average temperature value of the graphite electric energy storage module that heats the target heat exchange tube, where the average temperature value is the average of the temperatures of all graphite units in a layer of graphite electric energy storage module;

[0021] The processing module looks up the target flow rate value corresponding to the average temperature value;

[0022] The processing module obtains a flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

[0023] Preferably, the heat exchange tube control method includes:

[0024] The processing module obtains the average temperature value;

[0025] The processing module looks up the target flow rate value corresponding to the temperature range where the average temperature value is located, where the temperature range corresponds to the flow rate value one by one;

[0026] The processing module determines whether the target flow rate value is the same as the current flow rate value. If not, obtain a flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

[0027] Preferably, the graphite electric energy storage device is used in a graphite electric energy storage system. The graphite electric energy storage system includes a heat storage side and a heat supply side, and the heat storage side and the heat supply side are connected by a plate heat exchanger. The heat exchange tube control method includes:

[0028] The processing module obtains the average temperature value and the water outlet temperature of the heat supply side of the plate heat exchanger;

[0029] Control the on-off state of the solenoid valve according to the average temperature value and the water outlet temperature.

[0030] Preferably, the controlling the on-off state of the solenoid valve according to the average temperature value and the water outlet temperature includes:

[0031] The processing module determines whether the maximum temperature difference between the graphite electric energy storage modules exceeds a preset temperature. If so, close the solenoid valve of the heat exchange tube heated by the graphite electric energy storage module with the lowest temperature;

[0032] Determine whether the temperature of the graphite electric energy storage module corresponding to the heat exchange tube in the closed state is greater than the highest temperature of all the graphite electric energy storage modules. If so, open the heat exchange tube in the closed state.

[0033] Preferably, the heat exchange tube control method includes:

[0034] The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to the heat exchange tubes in all working states;

[0035] Judge whether all the average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range;

[0036] Close the heat exchange tubes heated by the graphite electric energy storage modules smaller than the target temperature range, and the target temperature range is the temperature range corresponding to the largest number of graphite electric energy storage modules;

[0037] Obtain the flow regulation parameter according to the flow value corresponding to the target temperature range.

[0038] Preferably, the heat exchange tubes are divided into several groups, and the heat exchange tubes in each group are connected in parallel. The inlet main pipe is connected to each heat exchange tube group, and each heat exchange tube group includes a flow meter and a regulating valve. The heat exchange tube control method includes:

[0039] The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to the heat exchange tubes in all working states;

[0040] For the heat exchange tubes in a target heat exchange tube group, judge whether all the average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range;

[0041] In the target heat exchange tube group, close the heat exchange tubes heated by the graphite electric energy storage modules with temperatures lower than the target temperature range, and count the number of graphite electric energy storage modules corresponding to temperatures below the target temperature range as the target number;

[0042] In the heat exchange tube groups other than the target heat exchange tube group, search for the heat exchange tubes in the closed state, and determine whether the average temperature of the graphite electric energy storage modules corresponding to the heat exchange tubes in the closed state belongs to the temperature range of the graphite electric energy storage modules corresponding to the heat exchange tubes in the open state. If so, open the heat exchange tubes in the closed state, where the number of heat exchange tubes in the closed state opened matches the target number and the temperature difference matches.

[0043] The present invention also provides a graphite electric energy storage device, and the graphite electric energy storage device controls the heat exchange tubes by using the heat exchange tube control method as described above.

[0044] The present invention also provides a heating system, and the heating system includes the graphite electric energy storage device as described above.

[0045] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0046] The positive and progressive effects of the present invention are as follows:

[0047] The present invention can enable the heat exchange tubes to work in a better state, improve the heat exchange efficiency, adjust the dryness in the heat exchange tubes, and make the operation of the heat exchange tubes more stable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic structural diagram of the heating system according to Embodiment 1 of the present invention.

[0049] Figure 2 It is a flowchart of the heat exchange tube control method according to Embodiment 1 of the present invention. EMBODIMENTS

[0050] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the described examples. EXAMPLE

[0051] See Figure 1 , this embodiment provides a heating system, and the heating system includes a graphite electric energy storage device.

[0052] The graphite electric energy storage device includes a plurality of layers of stacked graphite electric energy storage modules 111, a plurality of heat exchange tubes arranged in parallel, an inlet main pipe, at least one flowmeter 117, at least one regulating valve 116, and a processing module.

[0053] Each heat exchange tube includes a heat exchange section 112 and a connection section 113. A manual valve 114 and a solenoid valve 115 are provided on the connection section. The inlet main pipe is connected to each connection section, and a flow meter and a regulating valve are provided on the inlet main pipe.

[0054] The flow rate of each heat exchange tube is initialized by using the flow meter, the regulating valve, the manual valve, and the solenoid valve. During this process, the user controls the regulating valve and the solenoid valve by using the processing module, and can manually adjust the manual valve for initialization.

[0055] The processing module is used to obtain the temperature value of each layer of graphite electric energy storage module, and obtain the flow rate value of the heat exchange tube by using the flow meter;

[0056] The processing module is used to obtain a flow rate adjustment parameter according to the temperature value and the flow rate value;

[0057] The processing module is used to adjust the regulating valve by using the flow rate adjustment parameter.

[0058] Among them, initializing the flow rate of each heat exchange tube by using the flow meter, the regulating valve, the manual valve, and the solenoid valve includes:

[0059] Set the regulating valve to a preset value. The preset value is usually not the maximum or minimum value. In this embodiment, it is the percentage flow type, and the preset value is less than the maximum flow rate value of the regulating valve;

[0060] For the manual valve on a target connection section, open the solenoid valve on the target connection section and close the solenoid valves on all connection sections other than the target connection section, and adjust the manual valve to the target adjustment amount according to the flow rate value of the flow meter;

[0061] In this embodiment, the manual valves are adjusted in sequence. When adjusting a manual valve, the solenoid valve connected to the manual valve is opened, and the rest of the solenoid valves are closed. After adjusting a manual valve, keep the state of the manual valve and close the solenoid valve corresponding to the manual valve to adjust the manual valve on other connection sections.

[0062] Adjust the manual valve on each connection section to the target adjustment amount.

[0063] Specifically, the processing module is used to obtain the target heat exchange tube in the working state according to the solenoid valve switch state;

[0064] The processing module is used to obtain the average temperature value of the graphite electric energy storage module for heating the target heat exchange tube. The average temperature value is the average of the temperatures of all graphite units in a layer of graphite electric energy storage module;

[0065] The processing module is used to find the target flow rate value corresponding to the average temperature value;

[0066] The processing module is used to obtain a flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

[0067] In this embodiment, the higher the temperature of the graphite electric energy storage module, the greater the flow rate in the heat exchange tube.

[0068] Specifically, the processing module obtains an average temperature value;

[0069] The processing module looks up the target flow rate value corresponding to the temperature range where the average temperature value is located, where the temperature range corresponds to the flow rate value one by one;

[0070] The processing module determines whether the target flow rate value is the same as the current flow rate value. If not, it obtains a flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

[0071] For example, in this embodiment, two temperature ranges can be set, from 200 degrees to 400 degrees, and from 400 degrees to 600 degrees.

[0072] The flow rate value corresponding to 200 degrees to 400 degrees is smaller. The flow rate value from 400 degrees to 600 degrees is larger, which can improve the heating efficiency.

[0073] The graphite electric energy storage device is used for a graphite electric energy storage system. The graphite electric energy storage system includes a heat storage side 11 and a heat supply side 21, and the heat storage side and the heat supply side are connected through a plate heat exchanger.

[0074] The processing module is used for:

[0075] Obtain the average temperature value and the outlet water temperature of the heat supply side of the plate heat exchanger;

[0076] Control the on-off state of the solenoid valve according to the average temperature value and the outlet water temperature.

[0077] Specifically, the processing module is used for:

[0078] The processing module determines whether the maximum temperature difference between the graphite electric energy storage modules exceeds a preset temperature. If so, it closes the solenoid valve of the heat exchange tube heated by the graphite electric energy storage module with the lowest temperature;

[0079] Determine whether the temperature of the graphite electric energy storage module corresponding to the heat exchange tube in the closed state is greater than the highest temperature of all the graphite electric energy storage modules. If so, it opens the heat exchange tube in the closed state.

[0080] Furthermore, the processing module is used for:

[0081] The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to all the heat exchange tubes in the working state;

[0082] Determine whether all average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range;

[0083] Close the heat exchange tubes heated by the graphite electric energy storage modules below the target temperature range, where the target temperature range is the temperature range with the largest number of corresponding graphite electric energy storage modules;

[0084] Obtain the flow regulation parameter according to the flow value corresponding to the target temperature range.

[0085] For example, divide the temperature range into 4 ranges in sequence: 200 to 300, 300 to 400, 400 to 500, 500 to 600.

[0086] The number of graphite electric energy storage modules with temperature in the first range is 1, the number of graphite electric energy storage modules with temperature in the second range is 2, the number of graphite electric energy storage modules with temperature in the third range is 3, and the number of graphite electric energy storage modules with temperature in the fourth range is 1.

[0087] In this case, if all heat exchange tubes are set with flow according to the temperature in the fourth range, the dryness in the heat exchange tubes in the low temperature range will cause failures.

[0088] Therefore, to ensure that the flow matches the temperature range, close the heat exchange tubes heated by the graphite electric energy storage modules in the first and second ranges, and use the fourth range as the target temperature range.

[0089] Further, the heat exchange tubes are divided into several groups, the heat exchange tubes in each group are connected in parallel, the inlet main pipe is connected to each heat exchange tube group, and each heat exchange tube group includes a flow meter and a regulating valve. The processing module is used for:

[0090] The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to the heat exchange tubes in all working states;

[0091] For the heat exchange tubes in a target heat exchange tube group, determine whether all average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range;

[0092] In the target heat exchange tube group, close the heat exchange tubes heated by the graphite electric energy storage modules below the target temperature range, and count the number of graphite electric energy storage modules corresponding to below the target temperature range as the target number;

[0093] In the heat exchange tube groups other than the target heat exchange tube group, search for the heat exchange tubes in the closed state, and determine whether the average temperature of the graphite electric energy storage module corresponding to the heat exchange tubes in the closed state belongs to the temperature range of the graphite electric energy storage module corresponding to the heat exchange tubes in the open state. If so, open the heat exchange tubes in the closed state, where the number of heat exchange tubes in the closed state to be opened matches the target number and the temperature difference matches.

[0094] See Figure 2 , using the above heating system, this embodiment also provides a heat exchange tube control method, including:

[0095] Step 100: Initialize the flow rate of each heat exchange tube by using a flow meter, a regulating valve, a manual valve, and a solenoid valve;

[0096] Step 101: The processing module obtains the temperature values of each layer of graphite electric energy storage modules and obtains the flow rate values of the heat exchange tubes by using a flow meter;

[0097] Step 102: The processing module obtains a flow rate adjustment parameter according to the temperature values and the flow rate values;

[0098] Step 103: Use the flow rate adjustment parameter to adjust the regulating valve.

[0099] Among them, step 100 specifically includes:

[0100] Step 1001: Set the regulating valve at a preset value, and the preset value is less than the maximum flow rate value of the regulating valve;

[0101] Step 1002: For the manual valve on a target connection section, open the solenoid valve on the target connection section and close the solenoid valves on all connection sections other than the target connection section, and adjust the manual valve to the target adjustment amount according to the flow rate value of the flow meter;

[0102] Step 1003: Adjust the manual valve on each connection section to the target adjustment amount.

[0103] Among them, step 102 specifically includes:

[0104] Step 1021: The processing module obtains the target heat exchange tubes in the working state according to the solenoid valve switch state;

[0105] Step 1022: Obtain the average temperature value of the graphite electric energy storage module for heating the target heat exchange tubes, and the average temperature value is the average value of the temperatures of all graphite units in a layer of graphite electric energy storage modules;

[0106] Step 1023: The processing module searches for the target flow rate value corresponding to the average temperature value;

[0107] Step 1024, the processing module obtains a flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

[0108] Specifically, the heat exchange tube control method includes:

[0109] The processing module obtains an average temperature value;

[0110] The processing module looks up the target flow rate value corresponding to the temperature range where the average temperature value is located, where the temperature range and the flow rate value are in one-to-one correspondence;

[0111] The processing module determines whether the target flow rate value is the same as the current flow rate value. If not, it obtains a flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

[0112] Further, the heat exchange tube control method includes:

[0113] The processing module obtains the average temperature value and the outlet water temperature of the heat supply side of the plate heat exchanger;

[0114] Control the on-off state of the solenoid valve according to the average temperature value and the outlet water temperature.

[0115] Among them, the control of the on-off state of the solenoid valve according to the average temperature value and the outlet water temperature includes:

[0116] The processing module determines whether the maximum temperature difference between the graphite electric energy storage modules exceeds a preset temperature. If so, it closes the solenoid valve of the heat exchange tube heated by the graphite electric energy storage module with the lowest temperature;

[0117] Judge whether the temperature of the graphite electric energy storage module corresponding to the heat exchange tube in the closed state is greater than the highest temperature of all graphite electric energy storage modules. If so, open the heat exchange tube in the closed state.

[0118] Further, step 102 also includes:

[0119] The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to all heat exchange tubes in the working state;

[0120] Judge whether all average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range;

[0121] Close the heat exchange tubes heated by the graphite electric energy storage modules with temperatures lower than the target temperature range, where the target temperature range is the temperature range corresponding to the largest number of graphite electric energy storage modules;

[0122] Obtain a flow rate adjustment parameter according to the flow rate value corresponding to the target temperature range.

[0123] Specifically, the heat exchange tubes are divided into several groups, and the heat exchange tubes in each group are connected in parallel. The inlet main pipe is connected to each heat exchange tube group. Each heat exchange tube group includes a flow meter and a regulating valve. The heat exchange tube control method includes:

[0124] The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to the heat exchange tubes under all working conditions;

[0125] For the heat exchange tubes in a target heat exchange tube group, determine whether all the average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range;

[0126] In the target heat exchange tube group, close the heat exchange tubes heated by the graphite electric energy storage modules with temperatures lower than the target temperature range, and count the number of graphite electric energy storage modules corresponding to below the target temperature range as the target number;

[0127] In the heat exchange tube groups other than the target heat exchange tube group, find the heat exchange tubes in the closed state, and determine whether the average temperature of the graphite electric energy storage modules corresponding to the closed heat exchange tubes belongs to the temperature range of the graphite electric energy storage modules corresponding to the open heat exchange tubes. If so, open the closed heat exchange tubes, where the number of opened closed heat exchange tubes matches the target number and the temperature difference matches.

[0128] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A heat exchange tube control method for a graphite electric energy storage device, the graphite electric energy storage device comprising a plurality of stacked graphite electric energy storage modules, a plurality of heat exchange tubes arranged in parallel, an inlet main pipe, at least one flow meter, at least one regulating valve, and a processing module. Each heat exchange tube comprises a heat exchange section and a connecting section. A manual valve and a solenoid valve are provided on the connecting section. The inlet main pipe is connected to each connecting section. A flow meter and a regulating valve are provided on the inlet main pipe, and it is characterized in that, The heat exchange tube control method includes: Initializing the flow rate of each heat exchange tube by using a flow meter, a regulating valve, a manual valve, and a solenoid valve; The processing module obtains the temperature values of each layer of graphite electric energy storage modules and obtains the flow rate values of the heat exchange tubes by using a flow meter; The processing module obtains a flow rate adjustment parameter according to the temperature values and the flow rate values; Adjusting the regulating valve by using the flow rate adjustment parameter; Wherein, the processing module obtains a flow rate adjustment parameter according to the temperature values and the flow rate values, including: The processing module obtains the target heat exchange tubes in the working state according to the solenoid valve switch state; Obtaining the average temperature value of the graphite electric energy storage modules for heating the target heat exchange tubes, and the average temperature value is the average value of the temperatures of all graphite units in one layer of graphite electric energy storage modules; The processing module searches for the target flow rate value corresponding to the average temperature value; The processing module obtains the flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value; Wherein, the graphite electric energy storage device is used for a graphite electric energy storage system, the graphite electric energy storage system includes a heat storage side and a heat supply side, the heat storage side and the heat supply side are connected by a plate heat exchanger, and the heat exchange tube control method includes: The processing module obtains the average temperature value and the outlet water temperature of the heat supply side of the plate heat exchanger; Controlling the switch state of the solenoid valve according to the average temperature value and the outlet water temperature; The heat exchange tube control method further includes: The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to all heat exchange tubes in the working state; Judging whether all the average temperatures belong to the same temperature range, if not, obtaining the number of graphite electric energy storage modules corresponding to each temperature range; Closing the heat exchange tubes heated by the graphite electric energy storage modules with temperatures lower than the target temperature range, and the target temperature range is the temperature range corresponding to the largest number of graphite electric energy storage modules; Obtaining the flow rate adjustment parameter according to the flow rate value corresponding to the target temperature range.

2. The heat exchange tube control method according to claim 1, characterized in that The initializing the flow rate of each heat exchange tube by using a flow meter, a regulating valve, a manual valve, and a solenoid valve includes: Setting the regulating valve at a preset value, and the preset value is less than the maximum flow rate value of the regulating valve; For the manual valve on a target connection section, opening the solenoid valve on the target connection section and closing the solenoid valves on all connection sections other than the target connection section, and adjusting the manual valve to the target adjustment amount according to the flow rate value of the flow meter; Adjusting the manual valve on each connection section to the target adjustment amount.

3. The heat exchange tube control method according to claim 1, characterized in that, The heat exchange tube control method includes: The processing module obtains the average temperature value; The processing module searches for the target flow rate value corresponding to the temperature range where the average temperature value is located, and the temperature range corresponds to the flow rate value one by one; The processing module judges whether the target flow rate value is the same as the current flow rate value, if not, obtaining the flow rate adjustment parameter according to the number of heat exchange tubes in the working state and the target flow rate value.

4. The heat exchange tube control method according to claim 1, characterized in that, The controlling the switch state of the solenoid valve according to the average temperature value and the outlet water temperature includes: The processing module judges whether the maximum temperature difference between the graphite electric energy storage modules exceeds a preset temperature, if so, closing the solenoid valve of the heat exchange tube heated by the graphite electric energy storage module with the lowest temperature; Determine whether the temperature of the heat exchange tubes in the closed state corresponding to the graphite electric energy storage module is greater than the highest temperature of all graphite electric energy storage modules. If so, open the heat exchange tubes in the closed state.

5. The heat exchange tube control method according to claim 1, characterized in that The heat exchange tubes are divided into several groups. The heat exchange tubes in each group are connected in parallel. The inlet main pipe is connected to each heat exchange tube group. Each heat exchange tube group includes a flow meter and a regulating valve. The heat exchange tube control method includes: The processing module obtains the average temperature of the graphite electric energy storage modules corresponding to the heat exchange tubes in all working states; For the heat exchange tubes in a target heat exchange tube group, determine whether all the average temperatures belong to the same temperature range. If not, obtain the number of graphite electric energy storage modules corresponding to each temperature range; In the target heat exchange tube group, close the heat exchange tubes heated by the graphite electric energy storage modules with temperatures lower than the target temperature range, and count the number of graphite electric energy storage modules corresponding to below the target temperature range as the target number; In the heat exchange tube groups other than the target heat exchange tube group, find the heat exchange tubes in the closed state, and determine whether the average temperature of the graphite electric energy storage modules corresponding to the closed state heat exchange tubes belongs to the temperature range of the graphite electric energy storage modules corresponding to the open state heat exchange tubes. If so, open the closed state heat exchange tubes, where the number of opened closed state heat exchange tubes matches the target number and the temperature difference matches.

6. A graphite electric energy storage device, characterized in that, The graphite electric energy storage device controls the heat exchange tubes by using the heat exchange tube control method described in any one of claims 1 to 5.

7. A heating system, characterized in that, The heating system includes the graphite electric energy storage device described in claim 6.

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