Integrated light thermal storage system for oilfield well sites

Abstract

The utility model belongs to the technical field of light and heat storage integration system, disclose a kind of integrated light and heat storage system for oilfield well site, including support frame assembly, and integratedly set on support frame assembly photovoltaic power generation module, energy storage battery cabinet, light heat collector group and collaborative control cabinet;The output of photovoltaic power generation module is electrically connected with the input of energy storage battery cabinet;The output of energy storage battery cabinet is connected with the circulating pump in light heat collector group by energy storage converter;Collaborative control cabinet is connected with photovoltaic power generation module, energy storage battery cabinet and light heat collector group communication respectively, for scheduling the operating state of three according to illumination condition and load demand;The utility model integrates photovoltaic power generation module, energy storage battery cabinet, light heat collector group and collaborative control cabinet on support frame assembly, substantially reduce the length of connecting pipeline between equipment, reduce energy transmission loss, and realize energy efficient utilization, and system overall operating efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of integrated photovoltaic and thermal energy storage systems, and in particular to an integrated photovoltaic and thermal energy storage system for oilfield well sites. Background Technology

[0002] In the field of energy supply for oilfield well sites, the traditional model mainly relies on diesel generators or external power grids, which has significant drawbacks: First, the operating costs are high, diesel consumption is large and affected by oil price fluctuations; second, environmental pollution is severe, with diesel power generation producing large amounts of CO2 and NO. x The pollutants are not in line with the requirements for green oilfield construction; thirdly, the power supply is unstable, the grid access is limited by the conditions of remote well sites, the diesel generator has a high failure rate, and it is easy to cause production interruption.

[0003] Existing photovoltaic-storage systems mostly adopt a distributed design, with photovoltaic power generation modules, energy storage battery cabinets, and solar thermal collector groups installed independently. This results in complex installation, difficult maintenance, and lengthy connecting pipelines between equipment, leading to energy transmission losses of over 15%. Solar thermal systems generally lack wind speed response mechanisms, making them prone to reflector deformation or damage in the strong winds common in oil fields, resulting in a high equipment failure rate. Energy storage battery groups pose significant safety risks, lacking rapid fire extinguishing measures in the event of thermal runaway, which can easily lead to fire accidents, causing system shutdowns and property damage. The system control has a low level of intelligence, failing to dynamically optimize operation based on real-time lighting conditions and load demands, resulting in low energy utilization. Utility Model Content

[0004] The main objective of this invention is to provide an integrated photovoltaic-thermal energy storage system for oilfield well sites. This system addresses several technical issues: existing photovoltaic-thermal energy storage systems often employ a decentralized design, with photovoltaic modules, energy storage battery cabinets, and solar thermal collectors installed independently. This results in complex installation, difficult maintenance, lengthy connecting pipelines between devices, and energy transmission losses exceeding 15%. Furthermore, these systems generally lack wind speed response mechanisms, making reflectors prone to deformation or damage in the windy conditions common in oilfields, leading to high equipment failure rates. Finally, the energy storage battery packs pose significant safety risks, lacking rapid fire suppression measures in case of thermal runaway, which can easily cause fires, system shutdowns, and property damage.

[0005] In order to achieve the above-mentioned utility model objectives, the first aspect of this utility model proposes an integrated photovoltaic and thermal energy storage system for oilfield well sites, including a support frame assembly, and a photovoltaic power generation module, an energy storage battery cabinet, a photovoltaic thermal collector group, and a collaborative control cabinet integrated on the support frame assembly. The output terminal of the photovoltaic power generation module is electrically connected to the input terminal of the energy storage battery cabinet; The output end of the energy storage battery cabinet is connected to the circulating pump in the solar thermal collector group through an energy storage converter. The collaborative control cabinet is communicatively connected to the photovoltaic power generation module, the energy storage battery cabinet, and the solar thermal collector group, and is used to schedule the operation status of the three according to the lighting conditions and load demand.

[0006] Furthermore, the support frame assembly includes a photovoltaic mounting frame and an equipment carrying area located on its rear side, with the energy storage battery cabinet and the collaborative control cabinet arranged side by side within the equipment carrying area.

[0007] Furthermore, the solar thermal collector group is a trough-type concentrating solar collector, which includes a rotatable reflector and a collector tube, and is equipped with a solar tracking controller.

[0008] Furthermore, the solar tracking controller is communicatively connected to the collaborative control cabinet and can respond to wind speed sensor signals, controlling the reflector to rotate to a wind-resistant angle when the wind speed exceeds a set threshold.

[0009] Furthermore, the enclosure containing the energy storage battery cabinet is equipped with a fire suppression system.

[0010] Furthermore, the fire protection system adopts an aerosol fire extinguishing device and is equipped with a thermal wire automatic triggering mechanism.

[0011] Furthermore, the collaborative control cabinet includes a battery management system and an energy management system. The battery management system is used to monitor the voltage, temperature, and remaining charge of the energy storage battery, and the energy management system formulates charging and discharging strategies based on the data from the battery management system and load requirements.

[0012] Furthermore, the energy management system supports 4G wireless communication, enabling it to upload system operation data to a remote monitoring platform and receive remote commands.

[0013] Furthermore, the system also includes a mains power access interface, and the collaborative control cabinet can automatically switch to mains power supply when the power supply from the photovoltaic storage is insufficient.

[0014] Furthermore, the bottom of the support frame assembly is provided with adjustable feet to adapt to uneven ground and fix the system to the foundation.

[0015] Beneficial effects: 1. The integrated photovoltaic-thermal energy storage system for oilfield well sites of this utility model integrates photovoltaic power generation modules, energy storage battery cabinets, solar thermal collector groups and collaborative control cabinets on a support frame assembly, which greatly reduces the length of connecting pipelines between equipment, reduces energy transmission loss, and achieves efficient energy utilization. The overall operating efficiency of the system is improved, and the system systematically solves the pain points of high cost, low efficiency, great safety hazards and installation difficulties in energy supply for oilfield well sites.

[0016] 2. The integrated solar thermal energy storage system for oilfield well sites of this utility model has a fire-fighting system installed in the energy storage battery cabinet. It adopts an aerosol fire extinguishing device and a thermal wire automatic triggering mechanism. When the battery temperature exceeds 80°C, the fire extinguishing is activated within 3-5 seconds. There is no residue and no conductivity, which prevents the spread of fire and avoids downtime losses caused by battery fire. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an integrated photovoltaic thermal energy storage system for oilfield well sites according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the support frame assembly structure of an integrated photovoltaic thermal energy storage system for oilfield well sites according to an embodiment of this utility model.

[0018] in: 1-Supporting frame assembly; 2-Photovoltaic power generation module; 3-Energy storage battery cabinet; 4-Solar thermal collector group; 5-Coordination control cabinet.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Reference Figures 1-2 An embodiment of the present invention provides an integrated photovoltaic thermal energy storage system for oilfield well sites, including a support frame assembly 1, a photovoltaic power generation module 2, an energy storage battery cabinet 3, a photovoltaic thermal collector group 4, and a collaborative control cabinet 5 integrated on the support frame assembly 1. The output end of the photovoltaic power generation module 2 is electrically connected to the input end of the energy storage battery cabinet 3; The output end of the energy storage battery cabinet 3 is connected to the circulating pump in the solar thermal collector group 4 through an energy storage converter. The collaborative control cabinet 5 is communicatively connected to the photovoltaic power generation module 2, the energy storage battery cabinet 3, and the solar thermal collector group 4, respectively, and is used to schedule the operation status of the three according to the lighting conditions and load demand.

[0025] In this embodiment, the support frame assembly 1 is preferably constructed from high-strength steel welded together. Eight adjustable feet are provided at the bottom, employing a threaded adjustment structure. The support height can be adjusted by ±150mm by rotating the adjusting bolts to adapt to uneven ground. The system is then fixed to the concrete foundation using the anchor bolts. The support frame assembly 1 includes a photovoltaic mounting frame and an equipment bearing area located at its rear. The photovoltaic mounting frame uses a steel structure support with a 30° tilt angle for mounting the photovoltaic power generation module 2.

[0026] Photovoltaic power generation module 2 uses high-efficiency monocrystalline silicon solar panels, mounted on a photovoltaic mounting rack. Its output end is electrically connected to the input end of energy storage battery cabinet 3 via a copper core cable. Energy storage battery cabinet 3 uses lithium iron phosphate battery packs and is equipped with a fire suppression system, including an aerosol fire extinguishing device and a thermal wire automatic triggering mechanism. The aerosol fire extinguishing device is installed on the top of the battery cabinet, and the thermal wire is laid along the battery pack. When the battery temperature exceeds 80°C, the thermal wire automatically triggers the aerosol fire extinguishing device to achieve rapid fire suppression.

[0027] The output of the energy storage battery cabinet 3 is connected to the circulation pump in the solar thermal collector group 4 via a 50kW energy storage converter. The solar thermal collector group 4 is a trough-type concentrating solar collector, including a rotatable reflector and collector tubes. The reflector is made of aluminum alloy with a high-reflectivity coating, and the collector tubes are vacuum collector tubes filled with heat-conducting oil. The solar thermal collector group 4 is equipped with a solar tracking controller, which communicates with the collaborative control cabinet 5 via an RS485 bus and can respond to wind speed sensor signals. When the wind speed exceeds the set threshold of level 8, the controller rotates the reflector to a wind-resistant angle parallel to the ground to protect the reflector from damage by strong winds.

[0028] The collaborative control cabinet 5 is connected to the photovoltaic power generation module 2, the energy storage battery cabinet 3, and the solar thermal collector group 4 via a CAN bus, and is used to schedule the operation status of the three based on the lighting conditions and load demand. The collaborative control cabinet 5 includes a battery management system and an energy management system. The battery management system monitors the voltage, temperature, and remaining charge of the energy storage battery in real time, while the energy management system formulates charging and discharging strategies based on the data from the battery management system and load demand. The energy management system supports 4G wireless communication, enabling it to upload system operation data to a remote monitoring platform every 15 minutes and receive remote commands for system adjustments. The system also includes a mains power access interface. When the photovoltaic and energy storage power supply is insufficient, the collaborative control cabinet 5 automatically switches to mains power supply with a switching time of less than 100ms, ensuring continuous system operation.

[0029] The supporting frame assembly 1 integrates photovoltaic power generation module 2, energy storage battery cabinet 3, solar thermal collector group 4, and collaborative control cabinet 5, making the system structure compact and space utilization efficient, reducing the length of connecting pipelines between equipment, and reducing energy transmission loss; the collaborative control cabinet 5 uniformly schedules the operation status of the three components, realizing efficient energy utilization, reducing energy waste, and improving the overall operating efficiency of the system.

[0030] Optionally, the support frame assembly 1 includes a photovoltaic mounting frame and an equipment carrying area located on its back, with the energy storage battery cabinet 3 and the collaborative control cabinet 5 arranged side by side in the equipment carrying area.

[0031] It should be noted that the photovoltaic mounting frame and equipment bearing area of ​​the support frame assembly 1 are separated: the photovoltaic mounting frame and equipment bearing area are designed separately to avoid the impact of equipment heat dissipation on photovoltaic efficiency. At the same time, the energy storage battery cabinet 3 and the collaborative control cabinet 5 are set up side by side in the equipment bearing area, which facilitates equipment maintenance and repair, improves the maintainability of the system, and reduces operation and maintenance costs.

[0032] Optionally, the solar thermal collector group 4 is a trough-type concentrating solar collector, which includes a rotatable reflector and a collector tube, and is equipped with a solar tracking controller.

[0033] It should be noted that the solar thermal collector group 4 adopts a trough-type concentrating solar collector: by concentrating light through reflectors, the heat collection efficiency is improved, enabling the system to generate higher heat energy under the same light conditions, which is suitable for the heating needs of oilfield well sites; the trough structure is relatively simple and reliable, suitable for long-term use in oilfield environments, and reduces the equipment failure rate.

[0034] Optionally, the solar tracking controller is communicatively connected to the collaborative control cabinet 5 and can respond to the wind speed sensor signal, controlling the reflector to rotate to the wind-resistant angle when the wind speed exceeds a set threshold.

[0035] It should be noted that the solar tracking controller is connected to the collaborative control cabinet 5 and can respond to wind speed sensor signals: when the wind speed exceeds the set threshold, it automatically controls the reflector to rotate to the wind-resistant angle, which effectively protects the solar collector under severe weather conditions, extends the service life of the equipment, reduces maintenance costs, and improves the reliability of the system.

[0036] Optionally, a fire suppression system is installed inside the enclosure where the energy storage battery cabinet 3 is located.

[0037] It should be noted that the energy storage battery cabinet 3 is equipped with a fire suppression system: it can quickly activate to extinguish the fire when the battery experiences thermal runaway, prevent the fire from spreading, ensure the safety of the system, avoid system shutdown and property damage caused by battery fire, and improve the safety and reliability of the system.

[0038] Optionally, the fire protection system adopts an aerosol fire extinguishing device and is equipped with a thermal wire automatic triggering mechanism.

[0039] It should be noted that the fire protection system uses aerosol extinguishing devices and a thermal wire automatic triggering mechanism: the aerosol extinguishing device has the advantages of fast extinguishing speed (within 3-5 seconds), no residue, and non-conductive properties, making it particularly suitable for use in enclosed battery cabinets; the thermal wire automatic triggering mechanism can detect abnormal battery temperature in a timely manner and start extinguishing the fire in advance, improving the safety and reliability of the system.

[0040] Optionally, the collaborative control cabinet 5 includes a battery management system and an energy management system. The battery management system is used to monitor the voltage, temperature and remaining power of the energy storage battery, and the energy management system formulates charging and discharging strategies based on the data from the battery management system and load requirements.

[0041] It should be noted that the collaborative control cabinet 5 includes a battery management system and an energy management system: the battery management system monitors the battery status in real time, and the energy management system formulates the optimal charging and discharging strategy based on the data, which can extend the battery life by more than 20%, improve the utilization efficiency of the energy storage system, and ensure the stable operation of the system.

[0042] Optionally, the energy management system supports 4G wireless communication, enabling it to upload system operation data to a remote monitoring platform and receive remote commands.

[0043] It should be noted that the energy management system supports 4G wireless communication: it can upload system operation data to a remote monitoring platform, which makes it convenient for managers to remotely monitor the system's operating status, promptly identify and handle problems, improve the system's intelligence level and operation and maintenance efficiency, and reduce the cost of manual inspection.

[0044] Optionally, the system also includes a mains power access interface, and the collaborative control cabinet 5 can automatically switch to mains power supply when the power supply from the photovoltaic storage is insufficient.

[0045] It should be noted that the system includes a mains power access interface: when the power supply from the photovoltaic storage is insufficient, it automatically switches to mains power supply with a switching time of less than 100ms. This ensures the system's continuous power supply capability under conditions of insufficient light or insufficient energy storage, improves the system's reliability and power supply guarantee capability, and avoids production interruptions caused by power outages.

[0046] Optionally, the bottom of the support frame assembly 1 is provided with adjustable feet to adapt to uneven ground and fix the system to the foundation.

[0047] It should be noted that the bottom of the support frame assembly 1 is equipped with adjustable feet: these feet can adapt to uneven ground, ensuring stable installation of the system under various terrain conditions, avoiding system tilting and damage caused by uneven ground, improving the ease of installation and operational stability of the system, and reducing equipment failures caused by installation problems.

[0048] Instructions: First, adjust the system height using the adjustable feet at the bottom of the support frame assembly 1 to ensure stable installation on uneven ground, and then fix it to the foundation with anchor bolts. After the system starts, the photovoltaic power generation module 2 generates electricity under sunlight conditions. The electricity is transmitted via cable to the energy storage battery cabinet 3 for storage. The built-in fire protection system in the energy storage battery cabinet 3 monitors the battery temperature in real time. When the temperature exceeds 80°C, the thermal wire automatically triggers the aerosol fire extinguishing device to extinguish the fire. At the same time, the reflectors in the solar thermal collector group 4 adjust their angle under the control of the solar tracking controller to maximize the concentration efficiency. When the wind speed sensor detects a wind speed exceeding level 8, the solar tracking controller automatically controls the reflectors to rotate to a 0° wind-resistant angle to protect the equipment. The battery management system in the collaborative control cabinet 5 monitors the voltage, temperature, and remaining power of the energy storage battery in real time. The energy management system formulates control plans based on these data and load requirements. The optimal charging and discharging strategy is determined, and the circulation pump in the solar thermal collector group 4 is controlled by the energy storage converter. When the lighting conditions are good and the energy storage is sufficient, the system prioritizes the use of photovoltaic power generation and energy storage power supply. When the lighting is insufficient or the energy storage capacity is lower than the set threshold, the collaborative control cabinet 5 automatically switches to the mains power supply with a switching time of less than 100ms to ensure continuous power supply. The energy management system supports 4G wireless communication and uploads system operation data to the remote monitoring platform every 15 minutes for remote monitoring and management. During system operation, the collaborative control cabinet 5 continuously monitors the status of each module and dynamically adjusts the operating mode according to actual needs to ensure efficient, safe and stable operation of the system in the oilfield well site environment. At the same time, the energy storage battery cabinet 3 and the collaborative control cabinet 5 are set side by side in the equipment bearing area on the back of the support frame assembly 1, which avoids the impact of equipment heat dissipation on photovoltaic efficiency, facilitates equipment maintenance and repair, and improves the maintainability of the system.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An integrated solar thermal energy storage system for oilfield well sites, characterized in that, It includes a support frame assembly (1), and a photovoltaic power generation module (2), an energy storage battery cabinet (3), a solar thermal collector group (4), and a collaborative control cabinet (5) integrated on the support frame assembly (1); The output end of the photovoltaic power generation module (2) is electrically connected to the input end of the energy storage battery cabinet (3); The output end of the energy storage battery cabinet (3) is connected to the circulating pump in the solar thermal collector group (4) through an energy storage converter; The collaborative control cabinet (5) is connected in communication with the photovoltaic power generation module (2), the energy storage battery cabinet (3) and the solar thermal collector group (4) respectively, and is used to schedule the operation status of the three according to the lighting conditions and load demand.

2. The integrated solar thermal energy storage system for oilfield well sites according to claim 1, characterized in that, The support frame assembly (1) includes a photovoltaic mounting frame and an equipment carrying area located on its back, and the energy storage battery cabinet (3) and the collaborative control cabinet (5) are arranged side by side in the equipment carrying area.

3. The integrated solar thermal energy storage system for oilfield well sites according to claim 1, characterized in that, The solar thermal collector group (4) is a trough-type concentrating solar collector, which includes a rotatable reflector and a collector tube, and is equipped with a solar tracking controller.

4. The integrated solar thermal energy storage system for oilfield well sites according to claim 3, characterized in that, The solar tracking controller is connected to the collaborative control cabinet (5) and can respond to the wind speed sensor signal. When the wind speed exceeds the set threshold, it controls the reflector to rotate to the wind-resistant angle.

5. The integrated solar thermal energy storage system for oilfield well sites according to claim 1, characterized in that, The energy storage battery cabinet (3) is located inside a fire protection system.

6. The integrated solar thermal energy storage system for oilfield well sites according to claim 5, characterized in that, The fire protection system uses an aerosol fire extinguishing device and is equipped with a thermal wire automatic triggering mechanism.

7. The integrated solar thermal energy storage system for oilfield well sites according to claim 1, characterized in that, The collaborative control cabinet (5) includes a battery management system and an energy management system. The battery management system is used to monitor the voltage, temperature and remaining power of the energy storage battery. The energy management system formulates charging and discharging strategies based on the data from the battery management system and load requirements.

8. The integrated solar thermal energy storage system for oilfield well sites according to claim 7, characterized in that, The energy management system supports 4G wireless communication, enabling it to upload system operation data to a remote monitoring platform and receive remote commands.

9. The integrated solar thermal energy storage system for oilfield well sites according to claim 1, characterized in that, The system also includes a mains power access interface, and the collaborative control cabinet (5) can automatically switch to mains power supply when the power supply of the optical storage is insufficient.

10. The integrated solar thermal energy storage system for oilfield well sites according to claim 1, characterized in that, The bottom of the support frame assembly (1) is provided with adjustable feet to adapt to uneven ground and fix the system to the foundation.

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