Rotor support device and feed water pump turbine unit using same

Abstract

The utility model discloses a rotor support device and apply its water pump turbine unit, and rotor support device is used for supporting rotor, including support main part, drive component, rotating component and main control component, drive component and main control component set up respectively in both sides of support main part, the input of drive component is electrically connected with main control component, rotating component sets up in the top of support main part, and with rotor rotation is connected, the output of drive component is connected in rotating component, main control component can control drive component drive rotating component operation to drive rotor rotation. The utility model drives drive component through main control component to drive rotating component, makes rotor controlled rotation on the support of rotating component, like this, and rotor support does not need manual pushing, improves operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a rotor support device and a feedwater pump turbine unit using the same. Background Technology

[0002] The turbine rotor of the main feedwater pump in a nuclear power plant (i.e., the APP rotor, weighing approximately 3 tons) needs to be lifted out of the cylinder and placed on a support during major overhauls, inspections, and spare parts storage. Currently, simple roller supports are commonly used, and the rotor's rotation on the support requires manual pushing, usually requiring multiple people to work together. This poses a safety risk, such as hand injuries, and causes inconvenience for on-site maintenance and equipment storage, resulting in low work efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a rotor support device and a feedwater pump turbine unit using the same, aiming to solve the technical problem that the rotor support in the prior art needs to be manually pushed, resulting in low operating efficiency.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: A rotor support device is provided for supporting a rotor, comprising a support body, a drive assembly, a rotating assembly, and a main control assembly. The drive assembly and the main control assembly are respectively disposed on both sides of the support body. The input end of the drive assembly is electrically connected to the main control assembly. The rotating assembly is disposed on the top of the support body and rotatably connected to the rotor. The output end of the drive assembly is connected to the rotating assembly. The main control assembly can control the drive assembly to drive the rotating assembly to operate, thereby driving the rotor to rotate.

[0005] Furthermore, the rotating assembly includes at least two rotating brackets arranged side by side and a rotating wheel rotatably mounted on the rotating brackets. The rotating brackets are installed on the top of the support body, and the output end of the drive assembly is connected to the rotating wheel. The two rotating wheels together support the rotor.

[0006] Furthermore, the rotating wheel is made of MC nylon material.

[0007] Furthermore, the rotating wheels on the two rotating supports are arranged side by side with their rotation axes parallel.

[0008] Furthermore, the rotating assembly also includes a reducer disposed inside the rotating bracket, the reducer being movably connected to the rotating wheel, and the main control assembly being able to control the reducer to brake the rotating wheel.

[0009] Furthermore, the drive assembly includes a drive motor and a drive rod, one end of which is rotatably connected to the drive motor, and the other end of which is rotatably connected to the rotating assembly.

[0010] Furthermore, the rotor support device also includes a remote controller for controlling the drive assembly.

[0011] Furthermore, the main control component includes an emergency stop button for emergency braking.

[0012] This utility model embodiment also provides a feedwater pump turbine unit, including the rotor support device and rotor as described above, wherein the rotor support device supports the rotor.

[0013] Furthermore, at least two rotor support devices are provided, one rotor support device is located at the head end of the rotor, and the other rotor support device is located at the tail end of the rotor.

[0014] This invention provides a rotor support device for supporting a rotor, comprising a support body, a drive assembly, a rotating assembly, and a main control assembly. The drive assembly and the main control assembly are respectively disposed on both sides of the support body. The input end of the drive assembly is electrically connected to the main control assembly. The rotating assembly is disposed on the top of the support body and rotatably connected to the rotor. The output end of the drive assembly is connected to the rotating assembly. The main control assembly can control the drive assembly to drive the rotating assembly to rotate the rotor. This invention uses the main control assembly to drive the drive assembly to drive the rotating assembly, allowing the rotor to rotate in a controlled manner on the support of the rotating assembly. Thus, the rotor support does not require manual pushing, improving work efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a rotor support device provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of a water pump turbine unit provided for an embodiment of the present utility model.

[0017] Explanation of the markings in the image: 100. Rotor support device; 200. Rotor; 10. Supporting structure; 20. Drive assembly; 21. Drive motor; 22. Drive rod; 30. Rotating assembly; 31. Rotating support; 32. Rotating wheel; 33. Reducer; 40. Main control component; 41. Emergency stop button. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0022] Combination Figure 1 and Figure 2 As shown, this embodiment of the present invention provides a rotor support device 100 for supporting a rotor 200. It includes a support body 10, a drive assembly 20, a rotating assembly 30, and a main control assembly 40. The drive assembly 20 and the main control assembly 40 are respectively disposed on both sides of the support body 10. The input end of the drive assembly 20 is electrically connected to the main control assembly 40. The rotating assembly 30 is disposed on the top of the support body 10 and is rotatably connected to the rotor 200. The output end of the drive assembly 20 is connected to the rotating assembly 30. The main control assembly 40 can control the drive assembly 20 to drive the rotating assembly 30 to rotate the rotor 200.

[0023] In this embodiment, the support body 10 is used to support and position the various functional components within the rotor support device 100. The support body 10 is preferably a rigid frame structure, with a support platform on its upper part for mounting the rotating component 30, and lateral mounting positions on its left and right sides for mounting the main control component 40 and the drive component 20. The support body 10 is connected to the ground or a tooling table via a fixed point at its bottom to ensure sufficient structural strength and stability when supporting the rotor 200. A cable routing channel is provided within the support body 10 to achieve orderly laying of electrical connections and signal wiring between the main control component 40 and the drive component 20, reducing interference from exposed cables. The rotating component 30 is used for rotatable connection with the rotor 200 and achieves controlled rotation relative to the support body 10 under the action of the drive component 20. The rotating component 30 is mounted on the top support platform of the support body 10, and its mating part with the rotor 200 is configured as a rotational mating interface corresponding to the rotor 200 journal, so that the rotor 200 is supported vertically by the support body 10 and tangentially driven by the rotating component 30 for driving contact and rotational support. The rotating assembly 30 has an input connection terminal for forming a detachable mechanical connection with the output terminal of the drive assembly 20, enabling rapid separation and reset during installation, maintenance, or rotor 200 loading and unloading. The drive assembly 20 converts the control output from the main control assembly 40 into mechanical drive for the rotating assembly 30. The drive assembly 20 is mounted on one side of the support body 10. Its input terminal is electrically connected to the main control assembly 40 via a cable to receive control commands for start, stop, and operating parameters; its output terminal is connected to the input connection terminal of the rotating assembly 30 via a connecting member to transfer the output rotational energy to the rotating assembly 30. The connecting member between the drive assembly 20 and the rotating assembly 30 has a detachable structure for rapid unlocking and reset when the rotor support device 100 needs to be moved or the rotor 200 needs to be replaced. The main control assembly 40 manages the power supply and operation of the drive assembly 20 and performs logical control over the operating status of the rotating assembly 30. The main control assembly 40 is mounted on the other side of the support body 10 and internally includes a power input unit, a control unit, and an external interface unit. The control unit of the main control component 40 is electrically connected to the input terminal of the drive component 20, and is used to output control signals for driving. The external interface unit of the main control component 40 is used to connect to external power supply and upper-level control signals (which can be local human-machine operation or external system control) to realize the start-up, shutdown and operating condition settings of the rotor support device 100. The main control component 40 and the support body 10 are fixedly installed, and are connected to the drive component 20 through shielded cables and internal wiring channels to reduce electromagnetic interference and improve signal stability.

[0024] During assembly and use, first place the rotor support device 100 on a flat ground or tooling platform that can support the weight of the rotor 200, and position and fix it through the bottom fixing point of the support body 10; then, according to the journal position of the rotor 200, adjust the installation position of the rotating component 30 on the top of the support body 10 so that the rotating component 30 corresponds to the predetermined contact part of the rotor 200; mechanically connect the output end of the drive component 20 to the input connection end of the rotating component 30, and check the coaxiality and tightness of the connection; then complete the electrical connection between the main control component 40 and the input end of the drive component 20, and perform reliable power input and insulation testing. After confirming that the rotor 200 is supported by the support body 10 and forms a stable rotational engagement with the rotating component 30, the main control component 40 issues an operating command, driving the drive component 20 to drive the rotating component 30 to operate, so that the rotor 200 can achieve the required angle or angular displacement rotation under controlled conditions; after the operation is completed, the main control component 40 issues a stop command, the drive component 20 stops outputting, the rotating component 30 stops operating, and the rotor 200 remains in the current positioning state, which is convenient for subsequent maintenance, measurement or storage operations.

[0025] In one embodiment, the rotating assembly 30 includes at least two rotating brackets 31 arranged side by side and a rotating wheel 32 rotatably mounted on the rotating brackets 31. The rotating brackets 31 are mounted on the top of the support body 10, and the output end of the drive assembly 20 is connected to the rotating wheel 32. The two rotating wheels 32 together support the rotor 200.

[0026] In this embodiment, parallel mounting reference areas are pre-set on the top bearing surface of the support body 10 for positioning the side-by-side rotating brackets 31. The mounting reference areas can be formed by symmetrically arranged positioning holes or elongated holes and reference steps to ensure the relative spacing and parallelism of the rotating brackets 31 after assembly. During assembly, the two rotating brackets 31 are sequentially aligned with the mounting reference areas and fastened, ensuring they are arranged parallel to each other on the same horizontal plane. This creates conditions for stable line contact or narrow surface contact between the rotating wheel 32 and the rotor 200. Each rotating bracket 31 is preferably a rigid frame or "door" shaped structure, with a base at the bottom that fits against the top bearing surface of the support body 10, and a bearing seat at the top for mounting the rotating wheel 32. The axial direction of the bearing seat is parallel to the transverse reference line of the support body 10, thus ensuring that the rotation axes of the two rotating wheels 32 are parallel to each other. To improve assembly consistency, the height difference between the bearing housing and the base of the rotating bracket 31 is kept consistent between the left and right brackets to ensure that the outer circumferential surfaces of the two rotating wheels 32 are at the same elevation, so that the rotor 200 is subjected to balanced force between the two wheels.

[0027] Furthermore, the rotating wheel 32 is mounted in a corresponding bearing housing via a rotating pair, and its rotation axis is parallel to the rotation axis of the other rotating wheel 32. The outer circle of the rotating wheel 32 is a rolling contact surface that matches the outer circle of the rotor 200. After assembly, the two rotating wheels 32 form a two-point support relative to the rotor 200, and their contact lines are located in the same horizontal plane and are basically symmetrically distributed on both sides of the axis of the rotor 200, thereby achieving a combined function of load bearing and guidance under heavy load. By pre-setting and finely adjusting the distance between the two rotating supports 31 (e.g., using elongated holes to achieve a small lateral adjustment), the rotating wheel 32 can achieve a stable fit with rotors 200 of different outer diameters. The output end of the drive assembly 20 forms a mechanical connection with at least one rotating wheel 32 to transfer the rotational energy generated by the drive to the rotating wheel 32. Preferably, the mechanical connection adopts a detachable connecting component, so that the drive assembly 20 and the rotating wheel 32 can be quickly separated and reset during installation, maintenance, and rotor 200 loading and unloading.

[0028] In one embodiment, the rotating wheel 32 is made of MC nylon material.

[0029] In this embodiment, MC nylon can be a cast polyamide engineering plastic, which has high wear resistance and self-lubricating properties, and is adaptable to humid and corrosive environments. Through the above material selection and structural process control, the rotating wheel 32 achieves low-friction rolling contact with the rotor 200 under heavy load and low speed conditions, while taking into account the comprehensive performance of wear resistance, corrosion resistance and easy maintenance, and is suitable for the maintenance and spare parts storage scenarios of feedwater pump turbine rotors in nuclear power plants.

[0030] In one embodiment, the rotating wheels 32 on the two rotating supports 31 are arranged side by side and their rotation axes are parallel.

[0031] In this embodiment, the two rotating wheels 32 are respectively assembled in corresponding bearing seats via rolling bearings. After assembly, the axes of the two rotating wheels 32 are inspected using a straightness gauge, level, or laser collimator. When a slight angle is detected in the axes, compensation is made by adjusting the lateral position of the rotating bracket 31 in the elongated hole and the thickness of the shim until the parallelism of the two rotating axes reaches a predetermined tolerance (e.g., not greater than 0.05 mm / 1000 mm), thereby ensuring that the rotor 200 obtains a stable straight rolling path between the two wheels.

[0032] During the commissioning phase, the rotor 200 is placed at low speed on the two rotating wheels 32, and the main control component 40 issues a low-speed operation command (e.g., a detection speed of 1 to 2 rpm / min) to observe the rolling state of the rotor 200 along the two rotating wheels 32. When yaw or serpentine trajectory occurs, the parallelism and levelness of the two rotating supports 31 are checked and finely adjusted until the contact belt width of the rotor 200 is uniform and there is no abnormal noise or additional vibration during the full circumference rolling process.

[0033] In one embodiment, the rotating assembly 30 further includes a reducer 33 disposed inside the rotating bracket 31. The reducer 33 is movably connected to the rotating wheel 32, and the main control assembly 40 can control the reducer 33 to brake the rotating wheel 32.

[0034] In this embodiment, the output shaft of the reducer 33 is connected to the driven shaft installed in the hub of the rotating wheel 32 via a keyed or splined connection, so that the torque of the output shaft is transmitted to the rotating wheel 32 through the connection interface. To meet the needs of assembly and maintenance, a detachable connecting sleeve is provided on the output side. The connecting sleeve is quickly installed and removed by axial fasteners, and a concentric positioning section is provided between the connecting surfaces to ensure reassembly accuracy. To ensure low-speed and smooth driving capability, the reducer 33 can adopt a multi-stage gear transmission scheme and be configured with a high reduction ratio on the output side, so that the rotating wheel 32 can achieve a low-speed output range of about 1 to 2 rpm / min under the constant speed input of the drive component 20, which meets the rotation requirements of the rotor 200 in maintenance and storage scenarios.

[0035] In one embodiment, the drive assembly 20 includes a drive motor 21 and a drive rod 22, one end of the drive rod 22 being rotatably connected to the drive motor 21 and the other end being rotatably connected to the rotating assembly 30.

[0036] In this embodiment, the drive rod 22 is used to transmit mechanical energy between the drive motor 21 and the rotating assembly 30. One end of the drive rod 22 is rotatably connected to the output shaft of the drive motor 21, and the other end is rotatably connected to the input connection part of the rotating assembly 30. To compensate for installation errors and minor displacements during operation, detachable connection units (such as flexible couplings or universal joints) are provided at both ends of the drive rod 22. These connection units achieve reliable connection with axial fasteners through key / spline fit and provide flexible compensation within the allowable radial and angular ranges, thereby reducing off-center loads and additional vibrations.

[0037] In one embodiment, the rotor support device 100 further includes a remote controller for controlling the drive assembly 20.

[0038] In this embodiment, the remote controller is used to control the operation of the drive component 20, including starting, stopping, setting direction and speed, within a certain range from the rotor support device 100. This allows operators to complete controlled operations without approaching the support body 10 when hoisting, measurement, or maintenance work is being performed around the rotor 200, thereby improving operational convenience and on-site safety. A communication link is established between the remote controller and the main control component 40, preferably using industrial-grade wireless communication (e.g., 2.4 GHz / 5 GHz band or Sub-GHz industrial band), and configured with frequency hopping anti-interference and link encryption strategies. In situations with strict electromagnetic environment restrictions, a wired connection can also be achieved through a shielded cable. To ensure the uniqueness and reliability of control, the remote controller and the main control component 40 are uniquely paired, and control commands are only allowed to be issued after successful pairing. When the link is interrupted or the signal quality is below a threshold, the main control component 40 enters a hold or stop state to prevent the drive component 20 from running out of control.

[0039] In one embodiment, the main control component 40 includes an emergency stop button 41 for emergency braking.

[0040] In this embodiment, the emergency stop button 41 is located on the front operation panel of the main control component 40, in a position easily accessible to the operator and not confused with conventional start / stop / speed control components. Its shape is preferably a mushroom-shaped self-locking structure, with a prominent label and a highly visible indicator ring, allowing the operator to trigger emergency braking with a single button press in case of sudden events during rotor 200 hoisting, maintenance, or storage operations. When the emergency stop button 41 is pressed and locked, the safety control unit immediately cuts off the drive permission signal of the drive component 20 and simultaneously issues a brake holding command to the brake execution end of the rotating component 30 (e.g., the integrated brake unit on the output side of the reducer 33). This isolates the drive power while mechanical braking quickly establishes braking force on the output shaft side, causing the rotating wheel 32 to stop immediately and maintain its current position, preventing the rotor 200 from continuing to rotate due to inertia or rolling backward.

[0041] This utility model embodiment also provides a water pump turbine unit, including a rotor support device 100 and a rotor 200, wherein the rotor support device 100 supports the rotor 200.

[0042] In this embodiment, the rotor support device 100 is used to provide load-bearing and controlled rotational support for the rotor 200 during maintenance or storage. The rotor 200 is a rotor for the main feedwater pump turbine of a nuclear power plant, suitable for ground operations after being lifted out of the cylinder during major overhauls and for long-term storage of spare parts.

[0043] In one embodiment, at least two rotor support devices 100 are provided, one rotor support device 100 is located at the head end of the rotor 200, and the other rotor support device 100 is located at the tail end of the rotor 200.

[0044] In this embodiment, the feedwater pump turbine unit adopts an arrangement of at least two rotor support devices 100, one rotor support device 100 being located at the head end of the rotor 200 and the other rotor support device 100 being located at the tail end of the rotor 200. The "head end / tail end" positioning is based on the assembly reference of the rotor 200 in the unit, preferably corresponding to two journal areas of the rotor 200, so that the two rotor support devices 100 respectively form rolling contact supports with the rotor 200 at the outer circle corresponding to the journals, thereby achieving span bearing in the longitudinal direction and centering guidance in the transverse direction, to meet the engineering requirements of heavy-load low-speed rotation and long-term static support.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A rotor support device for supporting a rotor, characterized in that, The system includes a support body, a drive assembly, a rotating assembly, and a main control assembly. The drive assembly and the main control assembly are respectively disposed on both sides of the support body. The input end of the drive assembly is electrically connected to the main control assembly. The rotating assembly is disposed on the top of the support body and is rotatably connected to the rotor. The output end of the drive assembly is connected to the rotating assembly. The main control assembly can control the drive assembly to drive the rotating assembly to operate, thereby driving the rotor to rotate.

2. The rotor support device according to claim 1, characterized in that, The rotating assembly includes at least two rotating brackets arranged side by side and a rotating wheel rotatably mounted on the rotating brackets. The rotating brackets are installed on the top of the support body, and the output end of the drive assembly is connected to the rotating wheel. The two rotating wheels together support the rotor.

3. The rotor support device according to claim 2, characterized in that, The rotating wheel is made of MC nylon material.

4. The rotor support device according to claim 2, characterized in that, The rotating wheels on the two rotating supports are arranged side by side with their rotation axes parallel.

5. The rotor support device according to claim 2, characterized in that, The rotating assembly also includes a reducer disposed inside the rotating bracket. The reducer is movably connected to the rotating wheel, and the main control assembly can control the reducer to brake the rotating wheel.

6. The rotor support device according to claim 1, characterized in that, The drive assembly includes a drive motor and a drive rod, one end of which is rotatably connected to the drive motor and the other end of which is rotatably connected to the rotating assembly.

7. The rotor support device according to claim 1, characterized in that, It also includes a remote controller for controlling the drive components.

8. The rotor support device according to claim 1, characterized in that, The main control component includes an emergency stop button for emergency braking.

9. A feedwater pump turbine unit, characterized in that, It includes a rotor support device and a rotor as described in any one of claims 1-8, wherein the rotor support device supports the rotor.

10. The feedwater pump turbine unit according to claim 9, characterized in that, The rotor support device is provided in at least two parts, one of which is located at the head end of the rotor and the other at the tail end of the rotor.

Images