Active closed-loop vortex tube heat dissipation system and method for underground equipment

Abstract

According to the active closed-loop vortex tube heat dissipation system and method for the underground equipment, in the system, a load area and a heat dissipation area are communicated through a gas backflow path so that gas absorbing heat can be guided back to the heat dissipation area from the load area; the heating component is arranged in the load area; the compressor is arranged in the heat dissipation area and comprises an air inlet communicated with the inner space of the heat dissipation area so as to extract and compress air. The vortex tube is arranged in the heat dissipation area and is communicated with the compressor so as to introduce compressed gas; the heat exchange device is thermally coupled with the inner wall of the closed shell so as to conduct heat of hot air flow to the shell and dissipate the heat to the underground environment, and the hot end air outlet is connected with the heat exchange device through a hot air discharging path; the compressor, the vortex tube, the heat exchange device, the cold air conveying path, the gas backflow path, the hot air discharging path and the heat exchange device form a closed-loop gas circulation loop, so that heat is actively transferred from a load area to the underground environment.

Description

Technical Field

[0001] This invention relates to the field of downhole operation technology, and in particular to an active closed-loop vortex tube heat dissipation system and method for downhole equipment. Background Technology

[0002] During deep exploration and perforation operations, core components such as motors, controller circuit boards, and power batteries are difficult to operate under high temperature and high pressure. At the same time, they generate a lot of heat. Traditional insulation cylinders and phase change materials are passive heat dissipation methods, which can only maintain the system's safe operation for a certain period of time. As the cost of going down into the well increases and the operation time continues to extend, the temperature inside the cylinder using the existing methods continues to rise, eventually leading to equipment failure, seriously affecting the operation time and increasing the operation cost.

[0003] In existing technologies, equipment must withstand heat transferred from the environment and heat generated by the equipment itself. Because there is no heat outlet inside the casing, after a certain period, critical electronic components such as control chips will experience performance degradation, operational interruption, or even permanent damage due to overheating, severely impacting the reliability, continuity, and safety of downhole operations. Furthermore, downhole tools typically require compact structures, high integration, and the ability to operate independently; relying on external cooling media circulation significantly increases system complexity and the risk of failure.

[0004] The information disclosed in the background section is only intended to enhance the understanding of the background of the present invention, and therefore may contain information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To address the shortcomings or defects of the existing technology, an active closed-loop vortex tube cooling system and method for downhole equipment is provided. The system utilizes the Rank-Hersch effect of the vortex tube to generate a low-temperature airflow, which forces the key heat-generating components inside the equipment to be cooled by air. At the same time, the system efficiently discharges the waste heat generated to the outside of the equipment, ensuring the long-term stable operation of the equipment in the high-temperature environment downhole.

[0006] The objective of this invention is achieved through the following technical solutions.

[0007] An active closed-loop vortex tube cooling system for downhole equipment includes,

[0008] A sealed outer shell having an internal cavity, the internal cavity being divided into a load area and a heat dissipation area, the load area and the heat dissipation area being connected via a gas return path to draw the heat-absorbing gas from the load area back to the heat dissipation area.

[0009] A heating element is located within the load area;

[0010] A compressor is located in the heat dissipation area, the compressor including an air inlet communicating with the internal space of the heat dissipation area to draw in and compress gas;

[0011] A vortex tube is provided in the heat dissipation area and is connected to the compressor via a connecting pipe to introduce compressed gas. The vortex tube includes a cold end outlet and a hot end outlet that are connected to the load area via a cold gas delivery path for forced cooling.

[0012] A heat exchange device is thermally coupled to the inner wall of the sealed shell to conduct heat from the hot gas flow to the shell and dissipate it to the downhole environment. The hot end outlet is connected to the heat exchange device through a hot gas discharge path.

[0013] The compressor, vortex tube, heat exchanger, cold gas delivery path, gas return path, hot gas discharge path, and heat exchanger form a closed-loop gas circulation circuit, enabling the active transfer of heat from the load area to the downhole environment.

[0014] In the active closed-loop vortex tube heat dissipation system for downhole equipment, the heat exchange device is provided with a porous skeleton structure or fin array structure, and the inner side of the sealed shell is also provided with heat insulation material.

[0015] In the active closed-loop vortex tube cooling system for downhole equipment, the heat-generating component includes a motor, a chip control circuit board, and a battery that powers it. The chip control circuit board is connected to one or more temperature sensors to monitor the temperature of the heat-generating component in real time, and controls the start and stop of the compressor based on the temperature sensors.

[0016] In the active closed-loop vortex tube cooling system for downhole equipment, the cold air delivery path is a conduit or a shaped flow channel, which directs the airflow from the cold end outlet of the vortex tube to the heat-generating parts of the motor, chip control circuit board, and battery.

[0017] In the active closed-loop vortex tube cooling system for downhole equipment, the load area and the heat dissipation area are separated by a partition, the cold gas delivery path includes a conduit passing through the partition, and the gas return path is a through hole in the partition.

[0018] In the active closed-loop vortex tube cooling system for downhole equipment, the closed-loop gas circulation loop is pre-filled with a working medium, which includes air, nitrogen, or inert gas.

[0019] In the active closed-loop vortex tube heat dissipation system for downhole equipment, the heat exchange device includes an air inlet connected to the hot end outlet of the vortex tube, an air outlet communicating with the internal space of the heat dissipation area, and a heat dissipation end in close contact with the sealed shell.

[0020] In the active closed-loop vortex tube cooling system for downhole equipment, the heat-generating component is installed in the load area via a vibration damping structure.

[0021] In the active closed-loop vortex tube cooling system for downhole equipment, the active closed-loop vortex tube cooling system has a cylindrical structure.

[0022] The heat dissipation methods for active closed-loop vortex tube cooling systems used in downhole equipment include:

[0023] The compressor draws gas from the heat dissipation area and compresses the gas.

[0024] The compressed gas enters the vortex tube and is separated into a low-temperature cold gas flow and a high-temperature hot gas flow using the Rank-Helch effect.

[0025] The low-temperature cold airflow enters the load area through the cold air delivery path to provide forced air cooling for the heat-generating components;

[0026] The gas that has absorbed heat in the load area flows back to the heat dissipation area through the gas return path;

[0027] The high-temperature hot airflow enters the heat exchange device, where heat is transferred to the sealed shell through thermal coupling and finally dissipated into the downhole environment.

[0028] After the hot and cold air masses mix in the heat dissipation area, they are re-drawn into the compressor, completing a closed-loop cycle.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention generates a cold airflow at a temperature lower than the ambient temperature through vortex tubes to forcibly cool the heat-generating core, and the heat dissipation efficiency is much higher than that of traditional passive heat dissipation methods, which can effectively prevent the chip from overheating and shutting down.

[0030] The description provided is merely an overview of the technical solution of this invention. In order to make the technical means of this invention clearer and more understandable, so that those skilled in the art can implement it according to the contents of the specification, and to make the described and other objects, features and advantages of this invention more obvious and understandable, specific embodiments of this invention are described below. Attached Figure Description

[0031] Various other advantages and benefits of the present invention will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0032] In the attached diagram:

[0033] Figure 1 This is a schematic diagram of an embodiment of the active closed-loop vortex tube cooling system for downhole equipment according to the present invention.

[0034] The present invention will be further explained below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0035] Specific embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While specific embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0036] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that different terms may be used to refer to the same component. This specification and claims do not distinguish components based on differences in terminology, but rather on differences in function. The terms "comprising" or "including" used throughout the specification and claims are open-ended and should be interpreted as "comprising but not limited to." The following descriptions are preferred embodiments for carrying out the invention; however, these descriptions are for the purpose of understanding the general principles of the specification and are not intended to limit the scope of the invention. The scope of protection of this invention is determined by the appended claims.

[0037] To facilitate understanding of the embodiments of the present invention, the following will provide further explanation and description with reference to the accompanying drawings and several specific embodiments, and the accompanying drawings do not constitute a limitation on the embodiments of the present invention.

[0038] To better understand, such as Figure 1 As shown, an active closed-loop vortex tube cooling system for downhole equipment includes,

[0039] The sealed outer shell 9 has an internal cavity, which is divided into a load area and a heat dissipation area. The load area and the heat dissipation area are connected via a gas return path 6 to draw the heat-absorbing gas from the load area back to the heat dissipation area.

[0040] A heating element is located within the load area;

[0041] A compressor 8 is disposed in the heat dissipation area, the compressor 8 including an air inlet 8a communicating with the internal space of the heat dissipation area to draw in and compress gas;

[0042] The vortex tube 4 is located in the heat dissipation area and is connected to the compressor 8 via the connecting pipe 5 to introduce compressed gas. The vortex tube 4 includes a cold end outlet 4a and a hot end outlet 4b that are connected to the load area via a cold gas delivery path for forced cooling.

[0043] The heat exchange device 7 is thermally coupled to the inner wall of the sealed outer shell 9 to conduct the heat of the hot gas flow to the outer shell and dissipate it to the downhole environment. The hot end outlet 4b is connected to the heat exchange device 7 through the hot gas discharge path.

[0044] The compressor 8, vortex tube 4, heat exchange device 7, cold gas delivery path, gas return path, hot gas discharge path, and heat exchange device 7 constitute a closed-loop gas circulation circuit, enabling the active transfer of heat from the load area to the downhole environment.

[0045] In a preferred embodiment of the active closed-loop vortex tube heat dissipation system for downhole equipment, the heat exchange device 7 is provided with a porous skeleton structure or fin array structure, and the inner side of the sealed shell 9 is also provided with thermal insulation material 9a.

[0046] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the heat-generating component includes a motor 1, a chip control circuit board 2, and a battery 3 that powers it. The chip control circuit board 2 is connected to one or more temperature sensors to monitor the temperature of the heat-generating component in real time, and controls the start and stop of the compressor 8 according to the temperature sensors.

[0047] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the cold air delivery path is a duct or a shaped flow channel, which directs the airflow from the cold end outlet 4a of the vortex tube to the heat-generating parts of the motor 1, the chip control circuit board 2, and the battery 3.

[0048] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the load area and the heat dissipation area are separated by a partition, the cold gas delivery path includes a conduit passing through the partition, and the gas return path 6 is a through hole in the partition.

[0049] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the closed-loop gas circulation loop is pre-filled with a working medium, which includes air, nitrogen, or an inert gas.

[0050] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the heat exchange device 7 includes an air inlet 7b connected to the hot end air outlet 4b of the vortex tube, an air outlet 7a communicating with the internal space of the heat dissipation area, and a heat dissipation end 7c in close contact with the sealed outer shell 9.

[0051] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the heat-generating component is mounted in the load area via a vibration damping structure.

[0052] In a preferred embodiment of the active closed-loop vortex tube cooling system for downhole equipment, the active closed-loop vortex tube cooling system has a cylindrical structure.

[0053] The heat dissipation methods for active closed-loop vortex tube cooling systems used in downhole equipment include:

[0054] Compressor 8 draws gas from the heat dissipation area and compresses the gas;

[0055] The compressed gas enters the vortex tube 4 and is separated into a low-temperature cold gas flow and a high-temperature hot gas flow using the Rank-Helch effect.

[0056] The low-temperature cold airflow enters the load area through the cold air delivery path to provide forced air cooling for the heat-generating components;

[0057] The gas that has absorbed heat in the load area flows back to the heat dissipation area through the gas return path 6;

[0058] The high-temperature hot airflow enters the heat exchange device 7, and the heat is transferred to the sealed shell 9 through thermal coupling, and finally dissipated into the downhole environment;

[0059] After the hot and cold air flows mix in the heat dissipation area, they are re-drawn into the compressor 8, completing a closed-loop cycle.

[0060] Example 1

[0061] Please see Figure 1 The present invention provides an active closed-loop vortex tube cooling system for downhole equipment. The system is encapsulated within a robust, sealed housing 9, the inner wall of which is covered with thermal insulation material 9a to minimize heat intrusion from the high-temperature downhole environment.

[0062] The system's internal space is divided into a load area and a heat dissipation area by a partition. The load area houses the system's main heat-generating components, including the motor 1, the chip control circuit board 2, and the battery 3 that powers them. The heat dissipation area integrates the core heat dissipation components of this invention, forming a closed-loop gas circulation circuit. The operation of this circuit is as follows:

[0063] Power supply and startup: Battery 3 provides power to the chip control circuit board 2 and compressor 8. When the chip control circuit board 2 detects that its own temperature or that of battery 3 has reached a preset threshold, it starts compressor 8.

[0064] Gas compression: The compressor 8 draws working gas, such as air, from the internal space of the heat dissipation area through its air inlet 8a and compresses it into high-pressure gas. This process causes the gas temperature to rise due to compression.

[0065] Energy separation: High-pressure gas is transported to the inlet of vortex tube 4 through connecting pipe 5. Inside vortex tube 4, the high-pressure gas rotates at high speed and undergoes energy separation, i.e., the Rank-Helsch effect, forming two airflows with a large temperature difference at each end.

[0066] Cold end cooling: A stream of low-temperature, low-pressure cold air is discharged from the cold end outlet 4a of the vortex tube and is precisely guided to the effective load area through a preset pipe or flow channel. It sweeps over the surfaces of the motor 1, the chip control circuit board 2 and the battery 3 and efficiently absorbs the heat generated by these components through forced convection.

[0067] Gas recirculation: After absorbing heat, the temperature of this cold airflow rises, turning into warm airflow. Subsequently, it flows back into the internal space of the heat dissipation area through the through-holes set in the bulkhead between the two compartments, waiting to be drawn back into the compressor 8 to complete the closure of the cooling loop.

[0068] Hot-end heat dissipation: Simultaneously, another stream of high-temperature, high-pressure hot gas exits from the hot-end outlet 4b of the vortex tube and enters the integrated porous skeleton heat exchanger 7 through the heat exchanger inlet 7b. This heat exchanger 7 has a large specific surface area, and its structure, such as fins or a porous skeleton, is in close contact with the inner wall of the sealed shell 9, forming excellent thermal coupling. As the hot gas flows through the heat exchanger 7, it transfers a large amount of heat carried by it to the device body, and then conducts it through the heat dissipation end 7c of the heat exchanger to the sealed shell 9, ultimately dissipating it into the rock formation or fluid environment downhole.

[0069] Hot air circulation: After heat dissipation is completed, the hot air with a reduced temperature is discharged from the outlet 7a of the heat exchange device and returns to the internal space of the heat dissipation area. It mixes with the warm air flowing back from the effective load compartment and together serves as the air intake source for the compressor 8.

[0070] Through the above cycle, the system continuously removes heat from the payload area, thereby maintaining a safe operating temperature inside the equipment, especially around key electronic components, that is far lower than the external environment.

[0071] Example 2

[0072] This embodiment further optimizes the system's control logic based on Embodiment 1. The chip control circuit board 2 integrates a temperature sensor and control algorithm. This circuit board is not only the object being cooled but also the intelligent controller of the heat dissipation system. It can monitor its own temperature and the temperature of key points such as the battery 3 in real time. When the temperature is below a safe threshold, the circuit board can actively shut off the power to the compressor 8; when the temperature rises and approaches the warning value, it restarts the compressor 8. This intelligent control mode, which operates on demand, greatly reduces the average power consumption of the system, which is crucial for downhole tools that rely on battery power.

[0073] Example 3

[0074] Considering the intense mechanical shocks and vibrations generated during the operation of the downhole controllable shock wave equipment, this embodiment strengthens the internal structure of the effective load area based on the structure of Embodiment 1. The motor 1, chip control circuit board 2, and battery 3 are not directly fixed to the outer casing, but are mounted on an independent vibration damping frame connected to the main structure via a vibration damper. This design effectively isolates external impacts, providing efficient heat dissipation while further ensuring the mechanical safety of the core electronic components.

[0075] It should be noted that in this invention, the entire heat dissipation system forms a closed gas circulation loop inside the equipment, eliminating the need for external cooling media. This enhances the independence and environmental adaptability of the downhole tool, while reducing system complexity and potential leakage risks. The hot airflow generated by the vortex tube is cleverly guided to a heat exchange device integrated with the outer shell, utilizing the large shell surface area to efficiently discharge waste heat into the wellbore environment, completing the entire thermal management closed loop. By maintaining the operating temperature of the electronic equipment within the optimal range, the lifespan of components is significantly extended, improving the stability and operational success rate of the entire downhole tool. Through compartmentalization, the heat-generating payload is distinguished from the heat dissipation area, and efficient heat exchange is achieved through optimized airflow paths. Simultaneously, the application of thermal insulation materials further reduces the negative impact of the high-temperature downhole environment on the internal electronic equipment. The system can be intelligently started and stopped by a chip-controlled circuit board based on real-time temperature, achieving on-demand heat dissipation, effectively saving battery energy and reducing compressor mechanical wear.

[0076] Furthermore, this invention divides the internal cavity of the sealed shell 9 into a load area and a heat dissipation area, achieving functional zoning. This facilitates centralized management and cooling of heat-generating components, while also centrally arranging high-power heat dissipation components, optimizing airflow paths, and improving thermal control efficiency and system integration. Heat-generating components such as the motor 1, chip control circuit board 2, and battery 3 are located in the effective load area, clearly identifying key objects requiring active cooling and ensuring precise heat dissipation from the core heat source by the thermal control system, preventing equipment failure due to localized overheating. A gas compression and energy separation circuit consisting of a compressor 8, a connecting pipe 5, and a vortex tube 4 is established. The compressor provides a high-pressure gas source, driving the vortex tube to achieve the Rank-Hersch effect, separating a single airflow into a low-temperature cold airflow and a high-temperature hot airflow, providing active cooling capability for the system. The cold end outlet 4a of the vortex tube supplies cooling to the load area through a cold gas delivery path, directionally delivering the low-temperature airflow generated by the vortex tube to the surface of the heat-generating components. Forced convection heat transfer rapidly absorbs heat, significantly reducing the operating temperature of electronic components and preventing overheating shutdown. A gas return path is set up to return the heat-absorbing gas to the heat dissipation area, forming a closed-loop circulation channel for the cooling gas. This allows the heat-absorbing gas to re-enter the circulation system, ensuring closed-loop operation and preventing gas loss or pressure imbalance. The hot end outlet 4b of the vortex tube is connected to the hot gas discharge path, leading to the heat exchanger 7. This concentrates and discharges the high-temperature waste heat generated by the vortex tube, preventing heat accumulation inside the system and providing a dedicated channel for waste heat discharge. The heat exchanger 7 is thermally coupled to the inner wall of the sealed shell 9. The large specific surface area of ​​the heat exchanger, such as a porous skeleton or fin structure, efficiently absorbs the heat from the hot gas flow and conducts the heat to the high-temperature environment downhole, such as the formation or well fluid, through the shell, achieving system-level thermal balance. Thermal insulation material 9a is installed on the inner wall of the sealed shell to effectively block heat conduction from the downhole high-temperature environment (up to 150°C or higher) into the equipment, reducing external heat load and improving the energy efficiency ratio and stability of the internal thermal control system. The entire gas circulation loop is a closed-loop system, achieving self-contained and self-sustaining operation without relying on external cooling media. This avoids the introduction of external fluids that could lead to seal failure, contamination, or structural complexity, improving the independence and reliability of downhole tools. The chip control circuit board 2 integrates a temperature sensor and intelligent control module to control the compressor's start and stop, enabling on-demand heat dissipation. When the temperature is below a threshold, the compressor shuts down, reducing power consumption and extending battery life; at high temperatures, it automatically starts, ensuring equipment safety and enhancing system intelligence and energy efficiency. Heating components are mounted on a vibration-damping frame with dampers, providing efficient thermal control while isolating the system from strong mechanical shocks and vibrations during deep well operations, preventing electronic components from being damaged due to fatigue or displacement, and improving overall structural robustness. Using air or inert gas as the working medium—selecting non-toxic, stable, and readily available gases—reduces system maintenance costs; inert gas further prevents internal oxidation or electrochemical corrosion, improving long-term reliability.The cold air delivery path uses ducts or shaped flow channels to precisely guide the cold air to key heat-generating parts, improve the utilization rate of cooling airflow, avoid waste of cold energy, and achieve precise local temperature control, which is especially suitable for downhole equipment with limited space.

[0077] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0078] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An active closed-loop vortex tube cooling system for downhole equipment, characterized in that, It includes, The sealed shell (9) has an internal cavity that is divided into a load area and a heat dissipation area, which are connected via a gas return path (6) to draw the heat-absorbing gas from the load area back to the heat dissipation area. A heating element is located within the load area; A compressor (8) is located in the heat dissipation area, the compressor (8) including an air inlet (8a) communicating with the internal space of the heat dissipation area to draw in and compress gas; A vortex tube (4) is provided in the heat dissipation area and is connected to the compressor (8) via a connecting pipe (5) to introduce compressed gas. The vortex tube (4) includes a cold end outlet (4a) and a hot end outlet (4b) that are connected to the load area via a cold gas delivery path for forced cooling. The heat exchange device (7) is thermally coupled to the inner wall of the sealed outer shell (9) to conduct the heat of the hot gas flow to the outer shell and dissipate it to the downhole environment. The hot end outlet (4b) is connected to the heat exchange device (7) through the hot gas discharge path. The compressor (8), vortex tube (4), heat exchange device (7), cold gas delivery path, gas return path, hot gas discharge path and heat exchange device (7) constitute a closed-loop gas circulation circuit, which enables the active transfer of heat from the load area to the downhole environment.

2. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, Preferably, the heat exchange device (7) is provided with a porous skeleton structure or fin array structure, and the inner side of the sealed shell (9) is also provided with heat insulation material (9a).

3. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, The heating component includes a motor (1), a chip control circuit board (2), and a battery (3) that powers it. The chip control circuit board (2) is connected to one or more temperature sensors to monitor the temperature of the heating component in real time and to control the start and stop of the compressor (8) according to the temperature sensors.

4. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 3, characterized in that, The cold air delivery path is a duct or a shaped flow channel, which directs the airflow from the cold end outlet (4a) of the vortex tube to the heating parts of the motor (1), the chip control circuit board (2) and the battery (3).

5. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, The load area and the heat dissipation area are separated by a partition, the cold air delivery path includes a conduit passing through the partition, and the gas return path (6) is a through hole in the partition.

6. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, The closed-loop gas circulation circuit is pre-filled with a working medium, which includes air, nitrogen, or an inert gas.

7. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, The heat exchange device (7) includes an air inlet (7b) connected to the hot end air outlet (4b) of the vortex tube, an air outlet (7a) communicating with the internal space of the heat dissipation area, and a heat dissipation end (7c) in close contact with the sealed shell (9).

8. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, The heating element is mounted in the load area via a vibration damping structure.

9. The active closed-loop vortex tube cooling system for downhole equipment as described in claim 1, characterized in that, The active closed-loop vortex tube cooling system has a cylindrical structure.

10. The heat dissipation method of the active closed-loop vortex tube heat dissipation system for downhole equipment as described in any one of claims 1-9.

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