Hydrogen reduction tube furnace gas path control mechanism

Abstract

The utility model discloses a kind of hydrogen reduction tubular furnace gas path control mechanism, the mechanism is composed of electric valve, double sensor, controller and two flange discs, each component is spliced by splicing sleeve two two, and the connecting assembly formed by limiting screw and hexagon nut is fixed through. Multiple sealing structure is formed by triple rubber ring in splicing sleeve, and it is tightened extruded with connecting assembly, can strengthen sealing, prevent hydrogen leakage;Double sensor realizes gas path parameter multipoint acquisition and redundancy backup, and with controller, electric valve constitutes closed loop architecture, guarantees flow, pressure accurate linkage control;Modular splicing design collocates flange disc standardization interface and avoids opening, convenient to disassemble and maintain and working condition adaptation;Controller integrates display screen, LED state light and control button, realizes operating parameter real-time visual and convenient operation. The mechanism structure is compact, safe and reliable, fully meet the safety, precision and convenient demand of hydrogen reduction tubular furnace gas path control.

Description

Technical Field

[0001] This utility model relates to the field of materials science and engineering, and in particular to a gas path control mechanism for a hydrogen reduction tubular furnace. Background Technology

[0002] Hydrogen reduction reactions are widely used in scientific research and industrial applications such as material preparation and catalyst activation. As a core piece of equipment, the safety and precision of the gas path control of the hydrogen reduction tubular furnace directly determine the reaction effect and operational safety.

[0003] In existing technologies, the gas path control of hydrogen reduction tubular furnaces mostly adopts a decentralized architecture with manual valves, independent sensors, and simple pressure regulating components, which has many technical pain points: First, the sealing structure is simple, relying mainly on single-stage rubber seals or mechanical seals. Under high pressure and long-term operating conditions, gas leakage is likely to occur, and the flammable and explosive nature of hydrogen will directly amplify the safety risks. Secondly, the control precision is insufficient. Most sensors are single-point detectors, lacking redundant backup design. The comprehensiveness and reliability of data acquisition are lacking. Furthermore, it is difficult to achieve precise linkage control of flow and pressure by manually adjusting valves, resulting in poor stability of the reaction conditions. Third, disassembly and maintenance are inconvenient. Most of the control components are fixedly connected or welded together, without standardized splicing interfaces. When replacing sensors, valves and other components, the whole thing needs to be disassembled, which is not flexible enough to adapt to different operating conditions. Fourth, the operation status is poorly visualized, lacks a centralized control unit, parameter monitoring and status indication are scattered, operation is inconvenient, and it is difficult to respond quickly to gas path abnormalities.

[0004] To address this, a gas path control mechanism for a hydrogen reduction tubular furnace is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the above problems by proposing a novel pneumatic control mechanism with closed-loop control capability, multiple sealing protections, and a modular splicing structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen reduction tubular furnace gas path control mechanism, comprising an electric valve, a first sensor, a second sensor, a controller, and two flange discs. The controller is fixedly mounted on the top surface of the electric valve. The electric valve, the first sensor, the second sensor, and the two flange discs are connected in pairs via splicing sleeves. The two flange discs are located at both ends of the control mechanism, and all the splicing sleeves are fixed through two connecting components.

[0007] Preferably, the splicing sleeve includes an outer circular frame, an inner circular frame, a first rubber ring, a second rubber ring, a rounded corner rubber ring, and an inner hexagonal through-hole sleeve; the outer circular frame is welded to one end of the electric valve, the first sensor, and the second sensor, as well as one side surface of one of the flange discs; the inner circular frame is welded to the other end of the electric valve, the first sensor, and the second sensor, as well as one side surface of the other flange disc; the first rubber ring is bonded and fixed to the rear end face of the outer circular frame; the second rubber ring is bonded and fixed to the front end face of the inner circular frame; the rounded corner rubber ring is bonded and fixed to the annular groove at the front end of the outer circular frame; and the inner hexagonal through-hole sleeve is welded to both ends of the outer circular frame and the inner circular frame.

[0008] Preferably, the front end of the embedded circular frame is adapted to be inserted into the interior of the outer circular frame, the outer sides of the second rubber ring and the rounded corner rubber ring are both attached to the inner wall of the outer circular frame, and the first rubber ring is attached to the outer wall of the embedded circular frame, forming a multi-layer sealing structure through the first rubber ring, the second rubber ring and the rounded corner rubber ring; the interior of the inner hexagonal through-hole sleeve is provided with a hexagonal through-hole adapted to its own shape; the outer sides of the first rubber ring and the second rubber ring are both provided with annular grooves to improve the sealing deformation compensation capability.

[0009] Preferably, the connecting assembly includes a limiting screw and a hexagonal nut, wherein the limiting screw passes through the hexagonal through hole of the inner hexagonal through hole sleeve along the axial direction, and the hexagonal nut is threadedly sleeved on the front threaded section of the limiting screw.

[0010] Preferably, when the hexagonal nut at the front end of the limiting screw is tightened, the electric valve, sensor No. 1, sensor No. 2 and the two flange discs can be spliced ​​and locked; during this process, rubber ring No. 1 and rubber ring No. 2 are compressed and undergo elastic deformation, and their deformation tension can further enhance the sealing effect.

[0011] Preferably, the surfaces of the first sensor, the second sensor, and the controller are all equipped with display screens for data display. The surface of the controller is also equipped with LED lights for status indication and control buttons for parameter adjustment. The controller is electrically connected to the electric valve, the first sensor, and the second sensor, respectively.

[0012] Preferably, both ends of the flange disc are provided with clearance openings, the positions of which correspond to the assembly positions of the connecting components, facilitating the assembly and disassembly of the connecting components.

[0013] The beneficial effects of this utility model are as follows: Through the design of this gas path control mechanism, the specific beneficial effects are as follows: This utility model possesses multiple advantages through its closed-loop "detection-control-execution" architecture and modular splicing design: The dual sensors work together to acquire and redundantly back up parameters at multiple points in the gas path, and the precise linkage between the controller and the electric valve ensures efficient and accurate gas path regulation. The multi-rubber ring sealing structure of the splicing sleeve and the locking design of the connecting components effectively prevent gas leakage and ensure stable operation. Each functional component can be disassembled and assembled, and the standardized interface of the flange disc facilitates installation, maintenance and component replacement. The sensor type and parameters can be flexibly adapted to different working conditions. The overall structure is compact, the operation is intuitive, and the operating status is visible in real time, fully meeting the safety, reliability and convenience requirements of hydrogen reduction tubular furnace gas circuit control. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the overall structure of this utility model; Appendix Figure 2 This is the utility model Figure 1 Enlarged diagram of part A in the middle; Appendix Figure 3 This is a schematic diagram of the flange disc structure of this utility model; Appendix Figure 4 This is an exploded view of the splicing sleeve of this utility model; Appendix Figure 5 This is a partial schematic diagram of the connecting component of this utility model.

[0015] Legend: 1. Electric valve; 2. Sensor 1; 3. Sensor 2; 4. Controller; 5. Flange disc; 6. Splicing sleeve; 601. Outer circular frame; 602. Inner circular frame; 603. Rubber ring 1; 604. Rubber ring 2; 605. Rounded corner rubber ring; 606. Inner hexagonal through-hole sleeve; 7. Connecting assembly; 701. Limiting screw; 702. Hexagonal nut. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] See Figure 1-5As shown, the electric valve 1, as the core actuator for gas circuit opening and closing and flow regulation, is electrically connected to the controller 4 and receives the control signal from the controller 4 to achieve precise adjustment of the valve opening, thereby controlling the flow status (opening and closing) and flow rate of gases such as hydrogen in the tubular furnace gas circuit. It is a key actuator for gas circuit control.

[0018] Sensor 2, as one of the core components for gas path parameter detection, can be a gas sensor such as a flow sensor or a pressure sensor to collect key parameters such as the flow rate and pressure of hydrogen in the gas path in real time. It transmits the detection data to the controller 4 through electrical connection and displays the detection data intuitively on its own surface, providing data support for gas path status monitoring and adjustment.

[0019] Sensor 3 has the same function as Sensor 2 and works in conjunction with it. Both are gas path parameter detection components. It can be a flow sensor or a pressure sensor, etc., to collect gas parameters (such as pressure and flow rate in different sections) at different locations in the gas path in real time. The data is transmitted to the controller 4 through electrical connection and displayed on its own display screen, realizing multi-point detection and redundant backup of gas path parameters, and improving the comprehensiveness and reliability of detection data.

[0020] Controller 4, as the core control unit of the entire control mechanism, is fixedly mounted on the top surface of electric valve 1 and electrically connected to electric valve 1, sensor 2, and sensor 3. Its core functions include: receiving detection data transmitted from sensor 2 and sensor 3 and displaying the data on the surface display screen; indicating the air circuit operating status (e.g., normal, abnormal, adjusting) via LED lights; allowing users to adjust air circuit parameters (e.g., setting flow thresholds and pressure ranges) via control buttons; and sending control signals to electric valve 1 based on preset parameters or detection data to achieve automatic adjustment and precise control of the air circuit.

[0021] The flange disc 5 serves as the connecting component at both ends of the control mechanism, used to connect with the gas pipeline of the hydrogen reduction tubular furnace or other equipment, providing an installation reference and connection interface for the entire control mechanism. The clearance openings at both ends correspond to the assembly positions of the connecting component 7, facilitating the disassembly and assembly of the connecting component 7. At the same time, through welding with the splicing sleeve 6, a stable connection between the control mechanism and external equipment is achieved.

[0022] See appendix Figure 1-4 As shown, the splicing sleeve 6 serves as the splicing connection carrier for various functional components (electric valve 1, sensor 2, sensor 3, flange disc 5), and includes an outer circular frame 601, an inner circular frame 602, a first rubber ring 603, a second rubber ring 604, a rounded corner rubber ring 605, and an inner hexagonal through-hole sleeve 606. Its core function is to enable the detachable splicing and sealing of each component. The outer circular frame 601 and the inner circular frame 602 are connected by plugging and pulling to provide a structural basis for the splicing of various components, which facilitates the adjustment and replacement of the positions of the components; Rubber ring 603, rubber ring 604 and rounded rubber ring 605 form a multi-layer sealing structure. Rubber ring 603 fits against the outer wall of the inner circular frame 602, while rubber ring 604 and rounded rubber ring 605 fit against the inner wall of the outer circular frame 601. The annular grooves on the outer sides of rubber ring 603 and rubber ring 604 can improve the sealing deformation compensation capability and effectively prevent gas leakage. The internal hexagonal through-hole sleeve 606 provides a positioning channel for the assembly of the connecting component 7. Its hexagonal through-hole is adapted to the limit screw 701 to ensure the stability of the connecting component 7 after assembly and to prevent axial rotation.

[0023] See appendix Figure 1-5 As shown, the connecting assembly 7 includes a limiting screw 701 and a hexagonal nut 702. Its core function is to lock and fix the various splicing components: the limiting screw 701 axially passes through the hexagonal through-hole of the inner hexagonal through-hole sleeve 606, and the hexagonal nut 702 is threaded onto the threaded section at the front end of the limiting screw 701. Tightening the hexagonal nut 702 locks the electric valve 1, sensor 2, sensor 3, and the two flange discs 5 together. For disassembly, unscrewing the hexagonal nut 702 and pulling out the limiting screw 701 releases the locking mechanism, facilitating component adjustment and replacement. Simultaneously, the tightening process compresses the rubber rings 603 and 604, causing elastic deformation, and the deformation tension further enhances the sealing effect.

[0024] The operation process of this utility model is as follows: During installation and docking, the control mechanism is connected to the gas pipeline or other equipment of the hydrogen reduction tubular furnace through the circular through holes of the flange discs 5 at both ends to complete the installation benchmark positioning.

[0025] When assembling the components, the electric valve 1, sensor 2, sensor 3 and the two flange discs 5 are spliced ​​together in pairs through the splicing sleeve 6, so that the front end of the inner circular frame 602 is inserted into the outer circular frame 601, ensuring that each rubber ring fits against the corresponding frame wall.

[0026] When locking, the limiting screw 701 is axially inserted through the internal hexagonal through hole sleeve 606 of all splicing sleeves 6, and a hexagonal nut 702 is fitted on the threaded section at the front end of the limiting screw 701 and tightened to achieve splicing and locking of all components. At the same time, the first rubber ring 603 and the second rubber ring 604 are compressed to improve the sealing effect.

[0027] When setting parameters, preset parameters such as air flow threshold and pressure range can be set by using the control buttons on the surface of controller 4.

[0028] When the system starts up, the controller 4 automatically establishes an electrical connection with the electric valve 1, sensor 2, and sensor 3. Sensors 2 and 3 collect gas path parameters in real time and transmit them to the controller 4. The controller 4 displays the data on the screen and indicates the operating status with LED lights.

[0029] During automatic adjustment, the controller 4 sends a control signal to the electric valve 1 according to preset parameters or sensor detection data, and precisely adjusts the opening degree of the electric valve 1 to control the air passage opening and flow rate.

[0030] When it is necessary to replace or adjust sensor 2, sensor 3 and electric valve 1, unscrew the hexagonal nut 702, pull out the limit screw 701, and pull out the inner circular frame 602 from the outer circular frame 601 to complete the disassembly or position adjustment of the parts; after reassembly, follow the locking and fixing steps to complete the locking and restore use.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art should understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas path control mechanism for a hydrogen reduction tubular furnace, characterized in that: The device includes an electric valve (1), a first sensor (2), a second sensor (3), a controller (4), and two flange discs (5). The controller (4) is fixedly mounted on the top surface of the electric valve (1). The electric valve (1), the first sensor (2), the second sensor (3), and the two flange discs (5) are spliced ​​together in pairs by splicing sleeves (6). The two flange discs (5) are located at both ends of the control mechanism. All the splicing sleeves (6) are fixed through two connecting components (7).

2. The hydrogen reduction tubular furnace gas path control mechanism according to claim 1, characterized in that: The splicing sleeve (6) includes an outer circular frame (601), an inner circular frame (602), a first rubber ring (603), a second rubber ring (604), a rounded corner rubber ring (605), and an inner hexagonal through-hole sleeve (606); the outer circular frame (601) is welded to one end of the electric valve (1), the first sensor (2), and the second sensor (3), as well as one side surface of one of the flange discs (5); the outer circular frame (601) is welded to the other end of the electric valve (1), the first sensor (2), and the second sensor (3), as well as the other flange disc (5). The inner circular frame (602) is welded to one side surface of the flange disc (5); the first rubber ring (603) is bonded to the rear end face of the outer circular frame (601), the second rubber ring (604) is bonded to the front end face of the inner circular frame (602), the rounded corner rubber ring (605) is bonded to the annular groove at the front end of the outer side of the outer circular frame (601), and the inner hexagonal through hole sleeve (606) is welded to both ends of the outer side of the outer circular frame (601) and the inner circular frame (602).

3. The hydrogen reduction tubular furnace gas path control mechanism according to claim 2, characterized in that: The front end of the embedded circular frame (602) is adapted to be inserted into the interior of the outer circular frame (601). The outer sides of the second rubber ring (604) and the rounded corner rubber ring (605) are both attached to the inner wall of the outer circular frame (601). The first rubber ring (603) is attached to the outer wall of the embedded circular frame (602). A multi-layer sealing structure is formed by the first rubber ring (603), the second rubber ring (604), and the rounded corner rubber ring (605). The interior of the inner hexagonal through-hole sleeve (606) is provided with a hexagonal through-hole that matches its own shape. The outer sides of the first rubber ring (603) and the second rubber ring (604) are both provided with annular grooves to improve the sealing deformation compensation capability.

4. The hydrogen reduction tubular furnace gas path control mechanism according to claim 3, characterized in that: The connecting assembly (7) includes a limiting screw (701) and a hexagonal nut (702). The limiting screw (701) passes through the hexagonal through hole of the inner hexagonal through hole sleeve (606) axially, and the hexagonal nut (702) is threaded onto the front threaded section of the limiting screw (701).

5. The hydrogen reduction tubular furnace gas path control mechanism according to claim 4, characterized in that: When the hexagonal nut (702) at the front end of the limiting screw (701) is tightened, the electric valve (1), sensor 1 (2), sensor 2 (3) and two flange discs (5) can be spliced ​​and locked. During this process, rubber ring 1 (603) and rubber ring 2 (604) are squeezed and elastically deformed, and their deformation tension can further enhance the sealing effect.

6. The hydrogen reduction tubular furnace gas path control mechanism according to claim 5, characterized in that: The surfaces of the first sensor (2), the second sensor (3) and the controller (4) are all equipped with display screens for data display. The surface of the controller (4) is also equipped with LED lights for status indication and control buttons for parameter adjustment. The controller (4) is electrically connected to the electric valve (1), the first sensor (2) and the second sensor (3) respectively.

7. The hydrogen reduction tubular furnace gas path control mechanism according to claim 6, characterized in that: Both ends of the flange disc (5) are provided with clearance openings, the positions of which correspond to the assembly positions of the connecting components (7), facilitating the assembly and disassembly of the connecting components (7).

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