A coaxial hub adjusting device with micro leakage monitoring function and a multi-energy flow coupling system

Abstract

The application discloses a coaxial hub adjusting device with micro-leak monitoring function and a multi-energy flow coupling system, and relates to the technical fields of fluid control and new energy. The device comprises a shell (1), a center fluid passage (2), a first isolation wall (11), an isolation monitoring layer (6), a second isolation wall (12) and an annular fluid passage (3) which are coaxially nested. The pipe wall of the center fluid passage (2) is extended to form a sealed blind pipe (21), the driving part (41) and the adjusting part (42) of the magnetic adjusting assembly (4) are separated by the sealed blind pipe (21) to realize non-contact magnetic transmission, and shaft seal flow adjustment is realized; the monitoring sensor (51) penetrates into the isolation monitoring layer (6) in a vacuum state. The application completely prevents the physical leakage of high-pressure medium through the blind pipe magnetic drive structure, uses three layers of protection to build a micro-leak early warning mechanism, and realizes in-situ thermal cooperation of various fluids through coaxial nesting, so that the safety and integration of the multi-energy flow coupling system are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of fluid control equipment and new energy system integration technology, and more specifically, to a coaxial hub adjustment device with micro-leakage monitoring function and a multi-energy flow coupling system including the device. Background Technology

[0002] In modern new energy chemical systems (such as multi-energy flow coupling systems that utilize solid-state transformers to produce green hydrogen and further synthesize green chemical products), extremely complex material and energy flows are often involved. These systems not only need to handle high-temperature, high-pressure, and easily escaping gases (such as hydrogen), but also the large amounts of waste hot water or coolant generated during the electrolytic hydrogen production process. Existing fluid piping and valve control systems suffer from the following significant drawbacks:

[0003] (i) High risk of leakage from dynamic seals: Traditional high-pressure gas flow control valves generally use a mechanical valve stem that passes through the valve body for actuation. When dealing with small molecule media such as hydrogen, the mechanical shaft seal (packing seal) is prone to wear and failure during long-term reciprocating motion, resulting in physical leakage of hazardous gases.

[0004] (ii) Lack of early warning mechanism for micro-leakage: Once the existing pipeline has internal material fatigue micro-leakage, the gas often leaks directly into the external environment. There is a lack of intermediate buffer and safety monitoring means, making it difficult to achieve early warning.

[0005] (iii) Redundant pipelines and lack of thermal coordination: Gas pipelines and heat exchange water pipelines are usually laid independently, which not only occupies a large amount of physical space and increases the number of flanges and joints (increasing the number of leakage points), but also cannot efficiently utilize the by-product heat generated by electrolysis to heat and regulate the core reaction gas, resulting in low overall thermodynamic efficiency of the system. Summary of the Invention

[0006] The purpose of this invention is to provide a coaxial hub adjustment device and a multi-energy flow coupling system with micro-leakage monitoring function. Through the deep integration of multi-layer coaxial nested structure and magnetic drive technology, the leakage of dangerous media is fundamentally eliminated, and a high degree of integration and synergy of material flow and energy flow is achieved.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A coaxial hub adjustment device with micro-leakage monitoring function, comprising: a housing; a central fluid channel extending through the housing along its axial direction; a first isolation wall annularly surrounding the central fluid channel; an isolation monitoring layer annularly fitted around the first isolation wall, the layer being either in a vacuum state or filled with a tracer medium; a second isolation wall annularly fitted around the isolation monitoring layer; an annular fluid channel fitted between the second isolation wall and the housing; a magnetic adjustment component disposed on the device for adjusting the flow rate or on / off state of the fluid in the central fluid channel; and a monitoring sensor, the detection end of which extends into the isolation monitoring layer.

[0008] Preferably, the wall of the central fluid channel extends towards one side of the outer casing, forming a sealed blind tube open at one end and closed at the other. The magnetic adjustment assembly includes a drive unit and an adjustment unit. The adjustment unit is movably disposed inside the sealed blind tube, and the drive unit is sleeved outside the sealed blind tube. The two are connected by magnetic coupling for non-contact transmission. Preferably, an enhanced heat transfer assembly is disposed inside the annular fluid channel. This enhanced heat transfer assembly includes spiral fins or staggered ribs. Preferably, concentric flanges are integrally formed at both axial ends of the outer casing. The solid edge area of ​​the concentric flange has several bolt holes distributed circumferentially, and the bolt holes are not connected to any of the fluid or monitoring channels. Preferably, the outer surface of the outer casing is provided with an integrated electrical junction box and a multi-source sensing interface. The probe of the monitoring sensor penetrates the outer casing, the annular fluid channel, and the second isolation wall in sequence, with its end suspended in the isolation monitoring layer.

[0009] The present invention also provides a multi-energy flow coupling system, comprising: a power conversion system; an electrolytic hydrogen production system connected to the power conversion system; a coaxial hub regulating device as described above, wherein its central fluid channel is connected to the hydrogen output end of the electrolytic hydrogen production system, and its annular fluid channel is connected to the liquid heat medium ends of the electrolytic hydrogen production system and the power conversion system respectively; and a reaction vessel system wherein its feed end is connected to the discharge end of the coaxial hub regulating device.

[0010] The beneficial effects of this invention are as follows:

[0011] (i) Completely eliminate the hidden danger of dynamic seal leakage: The present invention completely seals the physical boundary of the central fluid channel through the "sealed blind pipe" and, together with the non-contact transmission of the "magnetic adjustment component", eliminates the traditional mechanical valve stem and achieves "absolute zero leakage" of high pressure gas.

[0012] (II) Pioneering Three-Layer Protection and Micro-Leak Early Warning Mechanism: An innovative protection system of "first isolation wall - isolation monitoring layer - second isolation wall" is constructed between the gas and water circuits. When an extremely small initial leak occurs in the central pipeline, the leaking medium will be trapped in the vacuum isolation monitoring layer, triggering the sensor alarm and shutting off the valve in conjunction with it, thus preventing high-pressure gas from directly mixing into the external cooling water system and achieving an ultimate safety defense.

[0013] (III) Extreme spatial integration and in-situ synergy of multiple energy flows: Abandoning the traditional gas-water separation pipeline, a coaxial nested design is adopted. The heat medium in the annular fluid channel wraps around the central gas path like a water bath jacket. With the help of enhanced heat transfer components, the waste heat of upstream equipment is used to directly preheat / temperature regulate the reaction gas, which greatly simplifies the pipeline network nodes and improves the overall energy efficiency of the system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external three-dimensional structure of the coaxial hub adjustment device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the longitudinal section structure of the coaxial hub adjustment device provided in an embodiment of the present invention along the central axis; Figure 3 A partially enlarged longitudinal sectional view of the sealed blind tube and magnetic adjustment assembly provided in an embodiment of the present invention; Figure 4 This is a front view of the concentric flange on the end face of the coaxial hub adjustment device provided in an embodiment of the present invention; Figure 5 The logical topology block diagram of the multi-energy flow coupling system provided in the embodiments of the present invention is shown.

[0015] Explanation of reference numerals in the attached drawings: 1-Outer shell; 11-First isolation wall; 12-Second isolation wall; 2-Central fluid channel; 21-Sealed blind pipe; 3-Annular fluid channel; 31-Enhanced heat transfer component; 4-Magnetic adjustment component; 41-Drive unit; 42-Adjustment unit; 5-Multi-source sensing interface; 51-Monitoring sensor; 6-Isolation monitoring layer; 7-Integrated electrical junction box; 8-Concentric flange; 81-Bolt hole. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of the present invention, the following description is provided in conjunction with the appendix. Figure 1 To be continued Figure 5 The present invention will be further described in detail with reference to specific embodiments.

[0017] Example 1: The main body structure of the coaxial hub adjustment device is as follows Figure 1 and Figure 2 As shown, this embodiment provides a coaxial hub adjustment device with micro-leakage monitoring function. From the external structure (see...), Figure 1The device includes a robust housing 1 with concentric flanges 8 integrally machined at both ends. The surface of the housing 1 also integrates a multi-source sensing interface 5 for mounting various probes, and a comprehensive electrical junction box 7 for centralized cabling.

[0018] The core of this device lies in its internal multi-layered coaxial nested flow channel design. Combined with... Figure 2 Longitudinal section view and Figure 4 The end face front view shows the following structure arranged in a ring from the inside out of the device: At the very center is the central fluid channel 2, used to transport high-pressure hazardous gases (such as green hydrogen); surrounding the gas passage is a solid metal first isolation wall 11; outside the first isolation wall 11 is an independent annular cavity, namely the isolation monitoring layer 6; this isolation layer 6 is further surrounded by a solid metal second isolation wall 12; the wide annular cavity formed between the second isolation wall 12 and the outermost outer shell 1 is the annular fluid channel 3, used to introduce heat exchange liquid (such as cooling water or waste hot water). Further, in Figure 4 On the concentric flange 8 shown, the aforementioned channels and walls are concentrically distributed, and four bolt holes 81 are drilled in the edge area of ​​the flange solid metal. Since the bolt holes 81 are completely within the solid metal area and do not communicate with other flow channels, a tight connection of the gas and liquid pipelines can be achieved through a single flange connection action.

[0019] Example 2: Magnetic Leak Prevention and Micro-Leak Monitoring Mechanism In scenarios involving easily permeable small molecule media such as high-pressure hydrogen, leak prevention is the primary technical challenge. See [link to relevant documentation] Figure 2 and Figure 3 The enlarged view shows that this invention abandons the traditional through-type mechanical valve stem and adopts a shaft-seal-less structure. Specifically, the wall of the central fluid channel 2 extends upward to form a sealed blind tube 21 with a closed top. The magnetic adjustment component 4 is cleverly divided into inner and outer parts: the drive part 41 (such as a servo stator coil or an external drive magnetic ring) is sleeved on the external air side of the sealed blind tube 21; the adjustment part 42 (a valve core with a permanent magnet) is suspended on the internal air passage side of the sealed blind tube 21. During operation, the drive part 41 uses a magnetic field to drive the adjustment part 42 to move through the metal blind tube 21, thereby adjusting the gas flow and eliminating physical leakage caused by shaft seal wear.

[0020] Furthermore, this invention constructs a triple security protection system. See also Figure 2The isolation monitoring layer 6 is evacuated to a vacuum (or filled with a specific micro-pressure tracer gas) before leaving the factory or during system operation. The probe of the monitoring sensor 51 passes through the external flow channel and is precisely suspended inside the isolation monitoring layer 6. When the wall of the central fluid channel 2 develops micron-level fatigue cracks due to long-term high-pressure erosion, a trace amount of hydrogen gas will not directly seep into the external water channel 3 and cause an explosion. Instead, it will preferentially leak into the vacuum isolation monitoring layer 6, causing a sudden change in the pressure of that layer. The monitoring sensor 51 instantly captures this abnormal signal and reports it through the electrical interface, achieving accurate early fault detection.

[0021] Example 3: Application in multi-current coupling systems (see [link]). Figure 5 The device described in this invention can serve as a core hub, perfectly integrated into a multi-energy flow coupling system such as "solid-state transformer-electrolysis of water to produce hydrogen-sustainable aviation fuel synthesis". In actual operation, the high-pressure hydrogen generated by the electrolyzer system flows into the central fluid channel 2; simultaneously, the approximately 60°C-80°C cooling wastewater generated by the solid-state transformer system or the electrolyzer system is introduced into the annular fluid channel 3. Combined with... Figure 2 The annular fluid channel 3 is equipped with a heat transfer enhancement component 31 containing numerous spiral fins. When the wastewater flows through it, turbulence is generated, directly acting as a "water bath jacket" to transfer heat to the internal hydrogen. Through this device, the hydrogen is preheated in situ to the required inlet temperature of the downstream reactor system while its flow rate is being regulated. When the system control terminal receives a micro-leakage alarm signal from the monitoring sensor 51, it can immediately send an emergency shutdown command to the drive unit 41 of the magnetic adjustment component 4. The adjustment unit 42 instantly cuts off the central fluid channel 2, nipping any potential safety hazards in the bud.

[0022] In summary, this invention not only achieves extreme physical spatial integration of multi-media pipelines, but also breaks through the technical bottleneck of easy leakage in existing chemical valves through the original "blind tube magnetic drive + hollow interlayer monitoring" structure, making it extremely suitable for application in modern multi-energy flow coupling systems with extremely high requirements for safety, compactness and energy efficiency.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A coaxial hub adjustment device with micro-leakage monitoring function, characterized in that, include: The device comprises: a housing (1); a central fluid channel (2) extending through the housing (1) along its axial direction; a first isolation wall (11) enclosing the central fluid channel (2) in an annular shape; an isolation monitoring layer (6) annularly fitted around the first isolation wall (11), wherein the isolation monitoring layer (6) is in a vacuum state or filled with a tracer medium; a second isolation wall (12) annularly fitted around the isolation monitoring layer (6); an annular fluid channel (3) fitted between the second isolation wall (12) and the housing (1); a magnetic adjustment component (4) mounted on the device for adjusting the flow rate or on / off state of the fluid in the central fluid channel (2); and a monitoring sensor (51) whose detection end extends into the isolation monitoring layer (6).

2. The coaxial hub adjustment device with micro-leakage monitoring function according to claim 1, characterized in that: The wall of the central fluid channel (2) extends toward the outer shell (1) to form a sealed blind tube (21) with one end open and the other end closed; the magnetic adjustment assembly (4) includes a driving part (41) and an adjustment part (42). The adjustment part (42) is movably disposed inside the sealed blind tube (21), and the driving part (41) is sleeved on the outside of the sealed blind tube (21). The driving part (41) and the adjustment part (42) are driven by magnetic coupling for non-contact transmission.

3. The coaxial hub adjustment device with micro-leakage monitoring function according to claim 1, characterized in that: The annular fluid channel (3) is provided with an enhanced heat transfer component (31), which includes spiral fins or staggered fins.

4. The coaxial hub adjustment device with micro-leakage monitoring function according to claim 1, characterized in that: Both ends of the outer shell (1) are integrally formed with concentric flanges (8). The solid edge area of ​​the concentric flanges (8) is provided with several bolt holes (81) distributed in the circumferential direction. The bolt holes (81) are not connected to the central fluid channel (2), the isolation monitoring layer (6) and the annular fluid channel (3).

5. The coaxial hub adjustment device with micro-leakage monitoring function according to claim 1, characterized in that: The outer surface of the housing (1) is provided with an integrated electrical junction box (7) and a multi-source sensing interface (5). The monitoring sensor (51) is installed at the multi-source sensing interface (5). The probe of the monitoring sensor (51) penetrates the housing (1), the annular fluid channel (3) and the second isolation wall (12) in sequence, and its end is suspended in the isolation monitoring layer (6).

6. A multi-energy flow coupled system, characterized in that, include: Power conversion system, used to output electrical energy and waste heat medium; An electrolytic hydrogen production system, connected to the power conversion system, is used to generate hydrogen and a by-product heat medium; The coaxial hub regulating device with micro-leakage monitoring function as described in any one of claims 1 to 5, wherein the central fluid channel (2) of the coaxial hub regulating device is connected to the hydrogen output end of the electrolytic hydrogen production system, and the annular fluid channel (3) of the coaxial hub regulating device is connected to one or both of the by-product heat medium output end of the electrolytic hydrogen production system and the waste heat medium output end of the power conversion system. The reactor system has its feed end connected to the discharge end of the coaxial hub regulating device, and is used to receive the regulated fluid medium for the synthesis reaction.

7. The multi-energy flow coupling system according to claim 6, characterized in that: The power conversion system is a solid-state transformer system.

8. The multi-energy flow coupling system according to claim 6, characterized in that: It also includes a control terminal, and the monitoring sensor (51) is connected to the control terminal by signal; when the monitoring sensor (51) detects that the pressure value or medium concentration value in the isolation monitoring layer (6) reaches a preset threshold, the control terminal outputs a command to the drive part (41) of the magnetic adjustment component (4) to shut off the central fluid channel (2).

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