Microreactor control drum assembly with rebound control

Abstract

This application provides a microreactor control drum assembly with rebound control, its buffer device, and control method. The control method includes: engaging the power transmission between the control drum and a drive motor, driving the control drum to rotate away from the zero position and allowing an elastic reset member to accumulate energy; releasing the torque constraint of the control drum through a clutch device, causing the elastic reset member to release energy and drive the control drum to rotate back to the zero position; when the control drum rotates to a preset interval adjacent to the zero position, a first friction member fixed to the control drum contacts a second friction member fixed to a support, consuming the kinetic energy of the control drum; when the control drum is at the zero position, the elastic reset member accumulates energy that causes the control drum to rotate back towards the zero position. The control method provided in this application can effectively reduce rebound during the control drum's rotation and reset, achieving more stable operation control of the control drum and improving the system's safety and reliability.

Description

Technical Field

[0001] This application relates to the field of microreactor technology, specifically to a microreactor control drum assembly with rebound control, its buffer device, and control method. Background Technology

[0002] Miniature reactor control drum assemblies typically employ a resilient reset operation control scheme: during normal operation, the drive unit overcomes the elastic force of the resilient reset component, rotating the control drum to a preset angle to adjust core reactivity; when rapid reset is required, such as in the event of a power failure, the control drum quickly resets to the zero position under the elastic force of the resilient reset component. When the control drum resets to the zero position, collisions with the stop and limit structure can cause the control drum to spring back, reducing its reactivity absorption capacity and jeopardizing core operational safety.

[0003] In view of this, this application proposes a microreactor control drum assembly with rebound control, a buffer device and a control method thereof, in order to solve one or a combination of the above-mentioned technical problems. Summary of the Invention

[0004] The first aspect of this application is to provide a control method for a microreactor control drum assembly with springback control.

[0005] The second aspect of this application is to provide the microreactor control drum assembly.

[0006] A third aspect of this application is to provide a buffer device for the microreactor control drum assembly.

[0007] The control method according to the first aspect of this application includes the following steps: The power transmission between the control drum and the drive motor is achieved by driving the control drum to rotate away from the zero position and causing the elastic reset element to accumulate energy. The torque constraint of the control drum is released by the clutch device, the elastic reset member releases energy and drives the control drum to rotate back to the zero position; When the control drum rotates to a preset range adjacent to the zero position, the first friction element fixed to the control drum comes into contact with the second friction element fixed to the support, generating frictional resistance and consuming the kinetic energy of the control drum. When the control drum is at the zero position, the elastic reset member accumulates energy that causes the control drum to rotate toward the zero position.

[0008] The microreactor control drum assembly and control method with rebound control provided in this application can effectively improve the rebound problem during rapid reset of the control drum, making the operation control of the control drum more stable and improving the safety and reliability of microreactor operation. Specifically, when the control drum rotates back to the zero position to the end of its stroke (i.e., within the preset range adjacent to the zero position), the first and second friction components of the buffer device can contact to generate frictional resistance to consume the kinetic energy of the control drum, so that the collision energy when rotating back to the correct position is dissipated, thereby effectively reducing the rebound of the drum. Furthermore, by configuring an elastic reset component, the control drum still accumulates energy that causes it to tend to rotate back when it is at the zero position. By providing an elastic preload, it effectively ensures that the control drum can rotate back to the correct position and remain stably at the zero position, effectively avoiding the problem of the control drum not being able to fully reset due to the frictional resistance of the friction buffer device.

[0009] According to a second aspect of this application, a microreactor control drum assembly includes a control drum, a support, a resilient reset member, a drive device, and a buffer device; wherein the support is used to fix the microreactor control drum assembly at its mounting position; the opposite ends of the resilient reset member are respectively fixed to the control drum and the support; the drive device includes a drive motor, a transmission shaft, and a clutch device; the drive motor is connected to the control drum via the transmission shaft to provide rotational power to the control drum; the clutch device is disposed in the torque transmission path of the control drum and is used to engage or disengage the torque transmission path; the buffer device... The impact device includes a first friction element and a second friction element. The first friction element is fixed to the control drum, and the second friction element is fixed to the support. When the control drum is far from the zero position, the torque transmission path is disconnected by the clutch device, allowing the elastic reset element to release energy and drive the control drum to rotate back to the zero position. When the control drum is in a preset range adjacent to the zero position, the first friction element and the second friction element contact to generate frictional resistance, thereby consuming the kinetic energy of the control drum. When the control drum is at the zero position, the elastic reset element accumulates energy that causes the control drum to rotate back towards the zero position.

[0010] In some embodiments, the second friction element is threadedly connected to the support via an elastic washer.

[0011] In some embodiments, the drive shaft is rotatably connected to the support, and the drive device further includes a limiting seat and a limiting block. The limiting seat is directly fixed to the support, and the limiting block is directly fixed to the drive shaft. The limiting seat and the limiting block cooperate to limit the control drum to rotate to the zero position.

[0012] In some embodiments, the limiting block and the first friction element are configured as a single unit, and the second friction element and the limiting seat at least partially overlap in the axial direction of the drive shaft.

[0013] In some embodiments, the preset interval is within the angle range of 4° to 12°.

[0014] In some embodiments, the zero position is configured as an emergency stop position, and the clutch is configured as an electromagnetic clutch capable of disconnecting the torque transmission path upon power failure, thereby automatically driving the control drum to rotate back to the emergency stop position.

[0015] In some embodiments, the microreactor control is configured as a heat pipe microreactor, the elastic gasket is made of heat-resistant rubber with an operating temperature of up to 200°C, and the first friction element and the second friction element are made of carbide ceramic or high-temperature alloy.

[0016] In some embodiments, the resilient reset element is configured as a torsion spring disposed around the drive shaft; and / or, the drive device further includes a reducer through which the drive motor transmits rotational power to the control drum.

[0017] According to the third aspect of this application, a buffer device is used in a microreactor control drum assembly as described in the second aspect, comprising a first friction element and a second friction element, wherein the first friction element is fixed to the control drum and the second friction element is fixed to the support; when the control drum is in a preset range adjacent to the zero position, the first friction element and the second friction element contact to generate frictional resistance, thereby consuming the kinetic energy of the control drum. Attached Figure Description

[0018] The above and other features, properties, and advantages of this application will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features. It should be noted that these drawings are merely illustrative and are not drawn to scale, and should not be construed as limiting the scope of protection actually claimed by this application, wherein: Figure 1 This is a schematic diagram of the structure of a microreactor control drum assembly according to one embodiment.

[0019] Figure 2 This is a schematic flowchart illustrating a control method for a microreactor control drum assembly according to one embodiment.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Miniature reactor control drum assembly; 10. Support; 11. Limiting seat; 20. Drive unit; 21. Drive shaft; 22. Limiting block; 23. Key; 30. Buffer device; 31. First friction element; 32. Second friction element; 33. Elastic washer; 34. Bolt; 40. Control the drum. Detailed Implementation

[0022] Reference will now be made in detail to various embodiments of this application, examples of which are shown in the accompanying drawings and described below. Although this application will be described in conjunction with exemplary embodiments, it should be understood that this application is not intended to be limited to those exemplary embodiments. Rather, this application is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of this application as defined by the appended claims.

[0023] This application uses specific terms to describe embodiments of the application. For example, "an embodiment" and / or "one embodiment" refers to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment" or "one embodiment" mentioned twice or more in different locations in this application does not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0024] In this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying positional relationships or order of importance.

[0025] In the following description, the terms "upper", "lower", "inner", "outer", "front", "rear", or other directional terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and / or be implemented in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] In the following description, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," "contact," etc., should be interpreted broadly; for example, they can refer to fixed connections or movable connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0027] This application uses flowcharts to illustrate the operations performed according to embodiments of this application. It should be understood that, depending on the actual situation, the steps shown in the diagrams are not necessarily performed sequentially, and other operations may be added to these processes, or one or more steps may be removed from these processes.

[0028] It is understood that the microreactor control drum assembly with rebound control and its buffer device and control method provided in this application are particularly suitable for heat pipe microreactors, and can also be applied to other suitable microreactors, without limitation.

[0029] See Figure 1 The microreactor control drum assembly 1 shown includes a control drum 40, a support 10, an elastic reset element, and a drive unit 20.

[0030] The control drum is a reactive control device known to those skilled in the art, particularly suitable for compact, highly integrated microreactors, such as heat pipe-cooled microreactors (HMRs), which will not be elaborated upon here. The support 10 is used to fix the control drum assembly in its mounting position and provides support for other parts of the assembly. The opposite ends of the elastic reset member are fixed to the control drum 40 and the support 10, respectively. The elastic reset member stores energy through elastic deformation and provides an elastic force to drive the control drum 40 to rotate towards zero (referred to as rotation) when the energy is released. The drive unit 20 includes a drive motor, a drive shaft 21, and a clutch device; the drive motor is connected to the control drum 40 via the drive shaft 21 and provides rotational power away from zero to the control drum 40. The clutch device is located on the torque transmission path of the control drum 40, for example, between the control drum 40 and the drive shaft 21, and is used to engage or disengage the torque transmission path. When the control drum 40 is away from the zero position (e.g., in the running position), the clutch device disconnects the torque transmission path that keeps the control drum 40 away from the zero position. In other words, the torque constraint is released, allowing the elastic reset member to release energy and provide elastic force to drive the control drum 40 to rotate, thereby achieving a rapid reset of the control drum 40.

[0031] The microreactor control drum assembly 1 also includes a buffer device 30, which comprises a first friction element 31 and a second friction element 32. The first friction element 31 is relatively fixed to the control drum 40 and can rotate with the control drum 40; the second friction element 32 is relatively fixed to the support 10 and does not rotate with the control drum 40. When the control drum 40 rotates to a preset range adjacent to the zero position, the first friction element 31 and the second friction element 32 come into contact to generate frictional resistance, thereby consuming the kinetic energy of the control drum 40. The collision energy of the control drum 40 during rapid reset is converted into frictional heat dissipation, thereby effectively reducing drum rebound, making the operation control of the control drum 40 more stable, and improving the safety and reliability of the system.

[0032] Compared to rebound control schemes that add a capture device, such as a hook at the end of the rotation stroke to capture and control the rotating drum 40, and an actuator to realize the hook's action, the friction-type buffer device 30 provided in this application helps to reduce structural complexity and failure risk.

[0033] Furthermore, when the control drum 40 is at the zero position, the elastic reset member still accumulates energy that causes the control drum 40 to rotate back to the zero position. This design, by providing elastic preload through the elastic reset member, ensures that the control drum 40 can rotate back to the correct position and remain stably at the zero position, effectively avoiding the problem that the control drum 40 cannot fully reset due to the frictional resistance of the friction buffer device 30.

[0034] like Figure 1 As shown, in some embodiments, the second friction element 32 is threaded to the support 10 via an elastic washer 33, for example, via a bolt 34. The elastic support of the elastic washer 33 can maintain a uniform clamping force on the contact surface of the friction element, avoid contact misalignment caused by rigid connection, absorb vibration and impact of friction contact, and extend the service life of the friction element; under the high-temperature conditions of heat pipe micro-stacking, the elastic deformation of the elastic washer 33 can adapt to the thermal deformation of the friction element and the support 10, ensuring the reliable performance of the buffer device 30 under long-term high-temperature operation conditions.

[0035] like Figure 1 As shown, in some embodiments, the drive shaft 21 is rotatably connected to the support 10, and the drive device 20 also includes a limiting seat 11 and a limiting block 22. The limiting seat 11 is directly fixed to the support 10, and the limiting block 22 is directly fixed to the drive shaft 21. For example, the limiting block 22 and the drive shaft 21 are connected by a key 23. The limiting seat 11 and the limiting block 22 cooperate to limit the rotation of the control drum 40 to the zero position.

[0036] Furthermore, the limiting block 22 and the first friction element 31 are configured as a single unit, and the second friction element 32 and the limiting seat 11 at least partially overlap in the axial direction of the drive shaft 21. This integrated design of the limiting block 22 and the first friction element 31, and the arrangement of the second friction element 32 and the limiting seat 11 occupying the same axial space, facilitates the integration and compactness of the control drum assembly. It also helps ensure the overall structural fit accuracy, guaranteeing the stability and controllability of the control drum 40's operation. This effectively prevents the risk of failure due to structural loosening or poor fit, thus improving the system's operational stability and reliability.

[0037] In some embodiments, the sector angle of the control drum 40 is in the range of 90° to 150°, and the buffer device 30 provides a buffering effect within a preset range of 4° to 12° of the adjacent zero position, for example, a preset range of about 10°. This ensures that the buffer device 30 only acts at the end of the rotation stroke of the control drum 40, avoiding excessive increase in the reset time of the control drum 40 and weakening the safety performance.

[0038] Furthermore, the sector angle of the control drum 40 is within the range of 110° to 130°, and the preset interval of the adjacent zero position providing buffering effect is limited to the range of 4° to 6°. For example, the sector angle of the control drum 40 is approximately 120°, and the preset interval is approximately 5°. When the control drum 40 is at the zero position, the projected area of ​​the absorber facing the core is approximately 1.73 × r × l, where r is the radius of the control drum and l is the length of the control drum. When the control drum enters this preset interval and deviates from the zero position by 5°, the deviation of the projected area is only about 0.3%, and its impact on the working performance of the control drum 40 is negligible.

[0039] In some embodiments, the zero position is configured as an emergency shutdown position, and the clutch is configured as an electromagnetic clutch capable of disengaging the torque transmission path that keeps the control drum 40 away from the emergency shutdown position during power failure, i.e., releasing the torque constraint. The elastic reset member automatically drives the control drum 40 to rotate back towards the emergency shutdown position to achieve power failure protection for the microreactor. It is understood that in other embodiments, the zero position can be configured as an operating position, and power regulation can be achieved by rotating to the zero position.

[0040] In some embodiments, the microreactor control is configured as a heat pipe cooled microreactor (HPMR), the elastic pad 33 is made of heat-resistant rubber with a long-term operating temperature of 200°C, the first friction element 31 and the second friction element 32 are made of carbide ceramic or high-temperature alloy, and the support 10 can be made of metal materials such as stainless steel. This design ensures the reliability and service life of long-term operation.

[0041] Specifically, the elastic pad 33 may also be about 3 to 5 millimeters thick, and the thickness of the first and second friction elements 32 in the direction perpendicular to the contact surface may be 2 to 3 millimeters, without limitation.

[0042] In some embodiments, the resilient reset element is configured as a torsion spring about the drive shaft 21, with the torsion spring used to further achieve structural compactness.

[0043] In some embodiments, the drive unit 20 further includes a reducer, through which the drive motor transmits rotational power to the control drum 40. The reducer receives the rotational power output from the drive motor and converts it into the required speed and torque output for the control drum 40, so that the control drum 40 rotates smoothly.

[0044] This application also provides a buffer device 30 for the microreactor control drum assembly 1 as described above, which includes a first friction element 31 and a second friction element 32. The first friction element 31 is fixed to the control drum 40, and the second friction element 32 is fixed to the support 10. When the control drum 40 is in a preset range adjacent to the zero position, the first friction element 31 and the second friction element 32 come into contact to generate frictional resistance, so as to consume the kinetic energy of the control drum 40.

[0045] like Figure 2 As shown, this application further provides a control method for the microreactor control drum assembly 1 to more clearly illustrate its operation control process. The control method includes the following steps: S1. The power transmission between the control drum 40 and the drive motor is connected. The drive motor drives the control drum 40 to rotate away from the zero position through the transmission shaft 21, so that the elastic reset element can accumulate energy to ensure the normal operation of the micro reactor.

[0046] S2. By releasing the torque constraint of the control drum 40 through the clutch device, the elastic reset member releases energy and drives the control drum 40 to rotate back to the zero position, so as to realize the rapid reset of the control drum 40, for example, to realize emergency shutdown in the event of a fault.

[0047] Furthermore, when the control drum 40 rotates to a preset range adjacent to the zero position, the first friction member 31 fixed to the control drum 40 and the second friction member 32 fixed to the support 10 come into contact and generate frictional resistance, consuming the kinetic energy of the control drum 40; when the control drum 40 is at the zero position, the elastic reset member accumulates energy that causes the control drum 40 to rotate toward the zero position.

[0048] In summary, the beneficial technical effects of this application include, but are not limited to, at least one of the following: 1. The microreactor control drum assembly with rebound control and its control method and buffer device provided in this application can effectively reduce the rebound of the control drum during rapid reset, making the operation control of the control drum more stable and improving the safety and reliability of the microreactor operation. When the control drum rotates back to the zero position to the end of the rapid reset stroke (i.e., within the preset interval adjacent to the zero position), the first friction element and the second friction element of the buffer device can contact to generate frictional resistance to consume the kinetic energy of the control drum, so that the collision energy when rotating to the correct position is dissipated, thereby effectively reducing the drum rebound, making the operation control of the control drum more stable, and improving the safety and reliability of the system.

[0049] 2. The elastic reset component is configured to store energy that causes the control drum to rotate even when it is in the zero position. By providing elastic preload, it effectively ensures that the control drum can rotate back to the correct position and remain stably in the zero position, thus effectively avoiding the problem that the control drum cannot be fully reset due to the frictional resistance of the friction buffer device.

[0050] While this application discloses preferred embodiments as described above, it is not intended to limit the scope of this application. Any changes and modifications can be made by those skilled in the art without departing from the spirit and scope of this application. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall fall within the protection scope defined by the claims of this application.

Claims

1. A control method for a microreactor control drum with rebound control, characterized in that, Includes the following steps: The power transmission between the control drum and the drive motor is achieved by driving the control drum to rotate away from the zero position and causing the elastic reset element to accumulate energy. The torque constraint of the control drum is released by the clutch device, the elastic reset member releases energy and drives the control drum to rotate back to the zero position; When the control drum rotates to a preset range adjacent to the zero position, the first friction element fixed to the control drum comes into contact with the second friction element fixed to the support, generating frictional resistance and consuming the kinetic energy of the control drum. When the control drum is at the zero position, the elastic reset member accumulates energy that causes the control drum to rotate toward the zero position.

2. A microreactor control drum assembly with rebound control, characterized in that, This includes a control drum, support, elastic reset component, drive unit, and buffer device; among which, The support is used to fix the microreactor control drum assembly at its mounting position; The two opposite ends of the elastic reset member are respectively fixed to the control drum and the support; The drive device includes a drive motor, a transmission shaft, and a clutch device; the drive motor is connected to the control drum via the transmission shaft to provide rotational power to the control drum; the clutch device is disposed in the torque transmission path of the control drum and is used to engage or disengage the torque transmission path. The buffer device includes a first friction element and a second friction element, wherein the first friction element is fixed to the control drum and the second friction element is fixed to the support; When the control drum moves away from the zero position, the torque transmission path is disconnected by the clutch device, allowing the elastic reset member to release energy and drive the control drum to rotate back to the zero position. When the control drum is in a preset range adjacent to the zero position, the first friction element and the second friction element come into contact to generate frictional resistance, thereby consuming the kinetic energy of the control drum. When the control drum is at the zero position, the elastic reset member accumulates energy that causes the control drum to rotate toward the zero position.

3. The microreactor control drum assembly according to claim 2, characterized in that, The second friction element is threadedly connected to the support via an elastic washer.

4. The microreactor control drum assembly according to claim 2, characterized in that, The drive shaft is rotatably connected to the support. The drive device also includes a limiting seat and a limiting block. The limiting seat is directly fixed to the support, and the limiting block is directly fixed to the drive shaft. The limiting seat and the limiting block cooperate to limit the control drum to rotate to the zero position.

5. The microreactor control drum assembly according to claim 4, characterized in that, The limiting block and the first friction element are configured as a single unit, and the second friction element and the limiting seat at least partially overlap in the axial direction of the transmission shaft.

6. The microreactor control drum assembly according to claim 2, characterized in that, The preset range is between 4° and 12°.

7. The microreactor control drum assembly according to claim 2, characterized in that, The zero position is configured as an emergency stop position, and the clutch device is configured as an electromagnetic clutch capable of disconnecting the torque transmission path when power is off, thereby the elastic reset member automatically drives the control drum to rotate back to the emergency stop position.

8. The microreactor control drum assembly according to claim 3, characterized in that, The microreactor control is configured as a heat pipe microreactor, the elastic gasket is made of heat-resistant rubber with an operating temperature of 200°C, and the first friction element and the second friction element are made of carbide ceramic or high-temperature alloy.

9. The microreactor control drum assembly according to claim 2, characterized in that, The elastic reset element is configured as a torsion spring surrounding the drive shaft; and / or, the drive device further includes a reducer through which the drive motor transmits rotational power to the control drum.

10. A buffer device, characterized in that, A microreactor control drum assembly as described in any one of claims 2 to 9 includes a first friction element and a second friction element, wherein the first friction element is fixed to the control drum and the second friction element is fixed to the support; When the control drum is in a preset range adjacent to the zero position, the first friction element and the second friction element come into contact to generate frictional resistance, thereby consuming the kinetic energy of the control drum.

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