Heat supply system for dealing with wide-load operation through cooperation of industrial boiler and energy storage device

Abstract

The utility model discloses a heat supply system for dealing with wide load operation through cooperation of an industrial boiler and an energy storage device, which comprises a water supply mechanism, a boiler, a steam distribution pocket and a heat energy use end which are sequentially installed, a main path and an energy storage path are arranged between the steam distribution pocket and the heat energy use end in parallel, and the main path and the energy storage path are provided with regulating valves; a heat exchanger is arranged in the boiler and is used for converting heat energy and outputting steam or hot water; an energy storage device is arranged on the energy storage route and is used for storing or releasing redundant heat energy; the steam distribution pocket is used for distributing heat energy to a using end or an energy storage device; the adjusting valve is used for adjusting the flow of each path to adapt to different loads of a heat supply system. The heat supply system comprises an integrated energy storage device and an intelligent regulation and control system, the problems of efficiency reduction, equipment loss and environmental protection risks caused by load fluctuation of an industrial boiler are solved, boiler load stability, heat efficiency improvement and operation cost reduction are achieved, and the heat supply system is suitable for stable heat energy supply and energy-saving optimization in a high-load fluctuation scene.

Description

Technical Field

[0001] This utility model relates to the field of industrial boiler technology, specifically to a heating system for industrial boilers with collaborative energy storage devices to cope with wide load operation. Background Technology

[0002] As a core device for heat energy conversion, the technological evolution of industrial boilers is deeply intertwined with the process of the Industrial Revolution. Currently, approximately 38% of global industrial energy consumption is concentrated in steam systems, with boiler equipment accounting for over 65% of this, and they are widely used in various fields such as chemical, pharmaceutical, textile, food processing, and district heating.

[0003] However, existing boiler systems face the following technical challenges:

[0004] 1. Large load fluctuations: Frequent changes in heat energy demand during industrial production cause boilers to be in a state of low or overload for a long time, resulting in poor combustion stability and decreased thermal efficiency;

[0005] 2. Increased equipment wear and tear: Frequent variable load operation can easily lead to thermal stress fatigue, corrosion, and dust accumulation, shortening equipment lifespan;

[0006] 3. High environmental risks: Under low load, the operating efficiency of environmental protection facilities (such as desulfurization and denitrification systems) decreases, and pollutant emissions are prone to exceed standards;

[0007] 4. Poor economic efficiency: The boiler operates off-peak for extended periods, resulting in significant fuel waste and increased operation and maintenance costs;

[0008] In existing technologies, load fluctuations are mainly mitigated by adjusting combustion parameters or adding buffer tanks, but the effect is limited. There is an urgent need to propose a more efficient heating system suitable for high load fluctuation scenarios. Utility Model Content

[0009] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a heating system for industrial boilers with a collaborative energy storage device to cope with wide load operation. It integrates an energy storage device and an intelligent control system to solve the problems of reduced efficiency, equipment wear and tear and environmental risks caused by load fluctuations in industrial boilers. It achieves stable boiler load, improved thermal efficiency and reduced operating costs, and is suitable for stable heat supply and energy-saving optimization in high load fluctuation scenarios.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] A heating system for industrial boilers with coordinated energy storage to cope with wide load operation includes a water supply mechanism, a boiler, a steam distribution drum and a heat energy user end installed in sequence. A main line and an energy storage line are connected in parallel between the steam distribution drum and the heat energy user end. Regulating valves are provided on the main line and the energy storage line.

[0012] The boiler is equipped with a heat exchanger for heat energy conversion, outputting steam or hot water;

[0013] The steam distribution drum is used to distribute thermal energy to the user end or energy storage device;

[0014] The energy storage route is equipped with an energy storage device for storing or releasing excess heat energy;

[0015] The regulating valve is used to adjust the flow rate of each circuit to adapt to different loads in the heating system.

[0016] Furthermore, regulating valves are provided on the main road, between the steam distribution drum and the energy storage device, and between the energy storage device and the heat energy user end.

[0017] Furthermore, flow meters are installed on the main road and the energy storage route. A first flow meter is installed on the main road and a second flow meter is installed on the energy storage route. The flow meters provide feedback to the regulating valve to dynamically adjust the flow rate of the main road and the energy storage route.

[0018] Furthermore, the second flow meter is located between the energy storage device and the heat energy user end.

[0019] Furthermore, the energy storage device employs phase change thermal storage materials or high-pressure thermal storage tanks.

[0020] Furthermore, a regulating valve is provided between the boiler and the steam distribution drum.

[0021] Furthermore, the water supply mechanism is a pump body.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. Capacity optimization: Boiler selection can be reduced by 20%-30%, lowering initial investment;

[0024] 2. Efficiency Improvement: Boiler thermal efficiency is increased by 10%-15%, resulting in significant annual fuel cost savings;

[0025] 3. Equipment protection: Reduces load fluctuations by 70% and extends equipment life by more than 10%;

[0026] 4. Environmental compliance: NOx and SO2 emission concentrations are consistently below the national standard limits. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a front view of a heating system for a combined industrial boiler and energy storage device to cope with wide load operation, as provided in Example 1.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Feed water pump; 2. Boiler; 3. Heat exchanger; 4. First electric regulating valve; 5. Steam drum; 6. Second electric regulating valve; 7. First flow meter; 8. Third electric regulating valve; 9. Energy storage device; 10. Fourth electric regulating valve; 11. Second flow meter; 12. Heat energy usage end. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Figure 1 As shown, an industrial boiler-co-storage device is used to provide a heating system for wide-load operation. It includes a feedwater pump 1, a boiler 2, a steam distribution drum 5, and a heat energy consumption end 12 installed in sequence. The boiler 2 is equipped with a heat exchanger 3 for heat energy conversion and outputting steam or hot water. A first electric regulating valve 4 is provided between the boiler 2 and the steam distribution drum 5.

[0033] The steam distributor 5 and the heat energy user end 12 are connected in parallel with a main road and an energy storage road. An energy storage device 9 is provided on the energy storage road to store or release excess heat energy. The steam distributor 5 is used to distribute heat energy to the heat energy user end 12 or the energy storage device 9. A second electric regulating valve 6 is provided on the main road.

[0034] A third electric regulating valve 8 is provided between the steam distribution drum 5 and the energy storage device 9, and a fourth electric regulating valve 10 is provided between the energy storage device 9 and the heat energy use end 12.

[0035] Flow meters are installed on the main road and the energy storage route. A first flow meter 7 is installed on the main road, and a second flow meter 11 is installed on the energy storage route. The second flow meter 11 is located between the energy storage device 9 and the heat energy use end 12. The flow meter feeds back to the regulating valve to dynamically adjust the flow of the main road and the energy storage route.

[0036] The energy storage device 9 uses phase change thermal storage materials or a high-pressure thermal storage tank.

[0037] The working logic of this utility model is as follows:

[0038] Operating Condition 1: When the demand of the heat energy user 12 is consistent with the maximum load of the boiler, the first electric regulating valve 4 and the second electric regulating valve 6 are fully open, the third electric regulating valve 8 and the fourth electric regulating valve 10 are fully closed, the energy storage device 9 does not participate in the operation, and the boiler 2 directly supplies heat energy to the heat energy user 12 through the main line.

[0039] Operating Condition 2: When the demand at the heat energy user end 12 is lower than the boiler's maximum load but higher than the boiler's economic load, the first electric regulating valve 4 and the second electric regulating valve 6 are partially closed, while the third electric regulating valve 8 and the fourth electric regulating valve 10 remain fully closed. The energy storage device 9 does not participate in the operation, and the boiler 2 directly supplies heat energy to the heat energy user end 12 through the main circuit.

[0040] Operating Condition 3: When the demand at the heat energy user end 12 is lower than the boiler's economic load, the third electric regulating valve 8 is opened and the fourth electric regulating valve 10 is fully closed, storing the excess heat energy into the energy storage device 9. At the same time, the second electric regulating valve 6 is closed to maintain the boiler operating at the economic load.

[0041] Operating Condition 4: When the demand at the heat energy user end 12 exceeds the boiler's maximum capacity, the third electric regulating valve 8 is closed, the second electric regulating valve 6 is fully opened, and the opening of the fourth electric regulating valve 10 is adjusted according to the demand at the heat energy user end 12. The boiler and the energy storage device 9 work together to supply energy and ensure stable heat energy output.

[0042] Operating Condition 5: When the heat energy user end 12 needs to quickly reduce from a high load to a low load, close the second electric regulating valve 6, open the third electric regulating valve 8, and close the fourth electric regulating valve 10. Store the excess heat energy in the energy storage device 9, so that the boiler load change rate is within a reasonable range, reduce the damage to the boiler caused by rapid load fluctuations, and extend the service life.

[0043] Operating Condition 6: When NO is caused by factors such as load fluctuations or fuel changes... X When SO2 emission concentration exceeds the national standard limit, the energy storage device 9 maintains stable boiler load and ensures NO emission levels. X The SO2 emission concentration meets the national standard limit requirements.

[0044] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A heating system for industrial boilers with coordinated energy storage to cope with wide-load operation, characterized in that, It includes a water supply mechanism, a boiler, a steam distribution drum and a heat energy user end installed in sequence. A main line and an energy storage line are connected in parallel between the steam distribution drum and the heat energy user end. Regulating valves are installed on the main line and the energy storage line. The boiler is equipped with a heat exchanger for heat energy conversion, outputting steam or hot water; The energy storage route is equipped with an energy storage device for storing or releasing excess heat energy; The steam distribution drum is used to distribute thermal energy to the user end or energy storage device; The regulating valve is used to adjust the flow rate of each circuit to adapt to different loads in the heating system.

2. The heating system for industrial boilers with coordinated energy storage as described in claim 1, characterized in that, Regulating valves are installed on the main road, between the steam distribution drum and the energy storage device, and between the energy storage device and the heat energy user end.

3. A heating system for industrial boilers with coordinated energy storage as described in claim 1, characterized in that, Flow meters are installed on the main road and the energy storage route. A first flow meter is installed on the main road and a second flow meter is installed on the energy storage route. The flow meters provide feedback to the regulating valve to dynamically adjust the flow rate of the main road and the energy storage route.

4. A heating system for industrial boilers with coordinated energy storage as described in claim 3, characterized in that, The second flow meter is located between the energy storage device and the heat energy user.

5. A heating system for industrial boilers with coordinated energy storage as described in claim 1, characterized in that, The energy storage device uses phase change thermal storage materials or high-pressure thermal storage tanks.

6. A heating system for industrial boilers with coordinated energy storage as described in claim 1, characterized in that, A regulating valve is provided between the boiler and the steam distributor.

7. A heating system for industrial boilers with coordinated energy storage as described in claim 1, characterized in that, The water supply mechanism is a pump body.

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