Device for grinding bearing bush of steam turbine of nuclear power plant

Abstract

The utility model discloses a device for grinding a bearing bush of a steam turbine of a nuclear power plant. The device comprises a support frame, a hoisting mechanism, an acting mechanism, a monitoring mechanism and a control mechanism, according to the device, through the arrangement of the supporting frame, the bearing bush can be directly disassembled, assembled and ground near the original position of the steam turbine, the bearing bush does not need to be hoisted to an overhaul area, the overhaul time is greatly shortened, the overhaul efficiency is improved, and the overall construction period is effectively shortened. The hoisting mechanism and the acting mechanism are arranged, so that operations such as hoisting and grinding of the bearing bush are conveniently realized, the labor intensity of workers is reduced, repeated bearing bush grinding and trial assembly are facilitated, the transportation frequency of the bearing bush in the hoisting process is reduced, the risk that the bearing bush is damaged due to collision and the like in the hoisting process is reduced, and the service life of the bearing bush is prolonged. The monitoring mechanism is further arranged and used for monitoring the using process of the nuclear power plant steam turbine bearing bush grinding device, working environment data are fed back in real time, and the safety and reliability of bearing bush overhauling are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant steam turbine overhauling technical field especially relates to a device for nuclear power plant steam turbine bearing bush grinding. BACKGROUND

[0002] In the maintenance process of steam turbine, the bearing bush grinding is an important and frequent work. In the prior art, when the bearing bush of steam turbine is ground, the bearing bush is usually disassembled from the steam turbine, hoisted and transported to a special maintenance area for grinding operation. After the grinding is completed, the bearing bush is hoisted back to the original position of the steam turbine for installation. The traditional maintenance method has the following obvious deficiencies:

[0003] The hoisting process is complicated, and needs to be hoisted and transported for many times, which not only consumes a lot of time and labor cost, but also has the risk of bearing bush damage in the hoisting process. Since the bearing bush needs to be hoisted to the maintenance area, the maintenance period is long, which affects the overall maintenance progress of the steam turbine and the normal operation time of the equipment. For the case of needing to grind the bearing bush and test the installation for many times, the hoisting operation needs to be performed each time, which greatly increases the complexity and difficulty of the work and reduces the work efficiency. The traditional lifting frame only relies on manual operation of the chain hoist, lacks real-time monitoring and automatic auxiliary functions for the bearing bush grinding process. In addition, the bearing bush needs to be turned over by manual adjustment, which has low precision and efficiency, and lacks remote operation means, which is difficult to adapt to complex working condition requirements. SUMMARY

[0004] The utility model provides a device for nuclear power plant steam turbine bearing bush grinding.

[0005] The utility model adopts the technical scheme in the technical problem that the utility model solves: a device for nuclear power plant steam turbine bearing bush grinding is constructed, which comprises a support frame, a hoisting mechanism, an acting mechanism, a monitoring mechanism and a control mechanism.

[0006] The support frame is installed on the steam turbine.

[0007] The hoisting mechanism is installed on the support frame and is used for hoisting the bearing bush of the steam turbine.

[0008] The acting mechanism is installed on the support frame and is used for operating the bearing bush of the steam turbine.

[0009] The monitoring mechanism is used for monitoring the use process of the device for nuclear power plant steam turbine bearing bush grinding.

[0010] The control mechanism is in communication connection with the hoisting mechanism, the acting mechanism and the monitoring mechanism.

[0011] In some embodiments, a plurality of connecting holes are formed on the support frame, and the connecting holes are arranged correspondingly to the mounting holes on the split surface of the steam turbine.

[0012] In some embodiments, the lifting mechanism comprises an electric hoist connected to the support frame, and a lifting chain connected to the electric hoist, and the lifting chain is connected to the bearing of the steam turbine.

[0013] In some embodiments, the acting mechanism comprises a mechanical arm connected to the support frame, and a gripper connected to the mechanical arm, and the gripper is used for operating the bearing of the steam turbine.

[0014] In some embodiments, the monitoring mechanism comprises a temperature and humidity sensor installed on the support frame.

[0015] In some embodiments, the monitoring mechanism comprises a vibration sensor installed on the support frame.

[0016] In some embodiments, the monitoring mechanism further comprises an adjustable support connected to the support frame, and an image collector installed on the adjustable support.

[0017] In some embodiments, the number of the image collectors is four, and the four image collectors are installed at the four corners of the support frame.

[0018] In some embodiments, the device for grinding the bearing of the steam turbine of the nuclear power plant further comprises a lubricant spray head installed on the support frame.

[0019] In some embodiments, the control mechanism comprises a remote control operation module, a data processing module, and a wireless communication module.

[0020] The device for grinding the bearing of the steam turbine of the nuclear power plant has the following beneficial effects: the support frame is arranged, the bearing can be directly disassembled and ground near the original position of the steam turbine, the bearing does not need to be hoisted to the maintenance area, the maintenance time is greatly shortened, the maintenance efficiency is improved, and the overall construction period is effectively saved. Through the arrangement of the lifting mechanism and the acting mechanism, the lifting and grinding of the bearing are facilitated, the labor intensity of workers is reduced, the multiple grinding and trial installation of the bearing are facilitated, the transportation frequency of the bearing during hoisting is reduced, the risk of damage to the bearing during hoisting due to collision and the like is reduced, the monitoring mechanism is arranged to monitor the use process of the device for grinding the bearing of the steam turbine of the nuclear power plant, real-time feedback of working environment data is realized, an alarm is triggered in an abnormal condition, and the safety and reliability of bearing maintenance are improved. In addition, the control mechanism is arranged to control the movement of the lifting mechanism, the acting mechanism, and the monitoring mechanism, so as to realize intelligent operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in conjunction with the drawings and embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as limiting the scope, for those of ordinary skill in the art, under the premise of not paying creative labor, still can obtain other related drawings according to these drawings. In the drawings:

[0022] Figure 1 It is the overall structure schematic diagram of the device for grinding the bushing of the steam turbine of the nuclear power plant in some embodiments of the utility model. Specific implementation

[0023] In order to have more clear understanding of the technical features, object and effect of the utility model, the specific implementation of the utility model will be described in detail by referring to the drawings. In the following description, it should be understood that the orientation or positional relationship indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is constructed and operated in a particular orientation, and is only for the convenience of describing the technical scheme, and should not be understood as indicating that the indicated device or element must have a particular orientation, therefore should not be understood as limiting the utility model.

[0024] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "fix", "set" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated, can be mechanically connected, or can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship of two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or one or more intermediate elements can exist. The terms "first", "second", "third" and the like are only for the convenience of describing the technical scheme, and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features limited by "first", "second", "third" and the like can be explicitly or implicitly included one or more features. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Please refer to Figure 1The utility model discloses a device for nuclear power plant steam turbine bearing bush grinding, it includes support frame 1, hoist mechanism 2, action mechanism 3, monitoring mechanism 4 and control mechanism, support frame 1 installs on steam turbine, hoist mechanism 2 installs on support frame 1, and is used to hoist the bearing bush of steam turbine, action mechanism 3 installs on support frame 1, and is used to operate the bearing bush of steam turbine, monitoring mechanism 4 is used to monitor the use process of the device for nuclear power plant steam turbine bearing bush grinding, control mechanism is connected with hoist mechanism 2, action mechanism 3 and monitoring mechanism 4 all communication.

[0026] Specifically, the support frame 1 can be made of a solid metal material, and has a frame shape, good stability and carrying capacity, the size of the support frame 1 is designed to be compatible with the structure of the steam turbine, and can be stably installed on the middle surface of the steam turbine. The hoist mechanism 2 can be connected with the bearing bush to facilitate hoisting operation of the bearing bush. The action mechanism 3 can perform operations such as grabbing and turning the bearing bush of the steam turbine. The monitoring mechanism 4 can monitor the use process of the device for nuclear power plant steam turbine bearing bush grinding, real-time feedback of working environment data, and triggering alarm in abnormal condition. The control mechanism can control the movement of the hoist mechanism 2, the action mechanism 3 and the monitoring mechanism 4 to realize intelligent operation.

[0027] Understandably, the device for nuclear power plant steam turbine bearing bush grinding can directly perform bearing bush disassembly and grinding work near the original position of the steam turbine by setting the support frame 1, without the need to hoist the bearing bush to the repair area, greatly shortening the repair time, improving the repair efficiency, and effectively saving the overall construction period. Through the setting of the hoist mechanism 2 and the action mechanism 3, hoisting, grinding and other operations of the bearing bush are facilitated, the labor intensity of workers is reduced, the multiple grinding of the bearing bush and the trial installation work are facilitated, the transportation frequency of the bearing bush during hoisting is reduced, the risk of damage to the bearing bush during hoisting due to collision and other reasons is reduced, the monitoring mechanism 4 is set to monitor the use process of the device for nuclear power plant steam turbine bearing bush grinding, real-time feedback of working environment data, triggering alarm in abnormal condition, improving the safety and reliability of bearing bush repair. In addition, the control mechanism is set to control the movement of the hoist mechanism 2, the action mechanism 3 and the monitoring mechanism 4 to realize intelligent operation.

[0028] Specifically, a plurality of connecting holes 11 are formed in the support frame 1, and the connecting holes 11 are correspondingly arranged with the mounting holes on the middle surface of the steam turbine. The connecting holes 11 can be a plurality of threaded holes, and the positions of the plurality of connecting holes 11 correspond to the mounting holes on the middle surface of the steam turbine. During use, the support frame 1 is fixed on the middle surface of the steam turbine by bolts to ensure the stability of the support frame 1 during work.

[0029] The lifting mechanism 2 comprises an electric hoist 21 connected with the support frame 1 and a lifting chain connected with the electric hoist 21, and the lifting chain is connected with the bearing of the steam turbine. The electric hoist 21 is a lifting device, which is specifically installed on the suspension structure of the support frame 1, and is detachably connected with the support frame 1, so that the position can be adjusted according to the actual operation position. The electric hoist 21 has the characteristics of small size, light weight, simple operation and convenient use. The electric hoist 21 can be connected with the bearing of the steam turbine through the lifting chain, so as to facilitate the lifting of the bearing.

[0030] The action mechanism 3 comprises a mechanical arm 31 connected with the support frame 1 and a clamping jaw 32 connected with the mechanical arm 31, and the clamping jaw 32 is used for operating the bearing of the steam turbine. The mechanical arm 31 can be installed on the top of the support frame 1, and can be a multi-degree-of-freedom mechanical arm. The clamping jaw 32 can be installed on the mechanical arm 31, and can accurately grab and turn the bearing of the steam turbine. The mechanical arm 31 drives the clamping jaw 32 to complete the bearing grabbing or turning according to the preset program or manual instruction. The mechanical arm 31 can adopt mature mechanical arm equipment on the market. In some embodiments, the mechanical arm 31 can be used to grind the bearing of the steam turbine or adopt artificial grinding.

[0031] Further, the monitoring mechanism 4 comprises a temperature and humidity sensor 41 installed on the support frame 1, which uses a temperature and humidity integrated probe as a temperature measuring element to collect temperature and humidity signals. The monitoring mechanism 4 further comprises a vibration sensor 42 installed on the support frame 1, which can measure the vibration amount during operation and trigger an alarm when abnormal.

[0032] The monitoring mechanism 4 further comprises an adjustable support 43 connected with the support frame 1 and an image collector 44 installed on the adjustable support 43. In this embodiment, the number of image collectors 44 is four, and the four image collectors 44 are installed at the four corner positions of the support frame 1. The four image collectors 44 jointly monitor the working process of the device for grinding the bearing of the steam turbine of the nuclear power plant, and can be equipped with an LED light group for supplementary lighting to support 360° dead angle free monitoring. The image collector 44 can be a camera.

[0033] The device for grinding the bearing of the steam turbine of the nuclear power plant further comprises a lubricant spray head 5 installed on the support frame 1, which can be connected with a spray pipeline to spray lubricant, thereby facilitating the grinding of the steam turbine.

[0034] The control mechanism comprises a remote control operation module, a data processing module and a wireless communication module. The remote control operation module can be a handheld remote controller, a touch screen, an operation joystick and an emergency stop button, and information of the remote control operation module can be remotely operated through the wireless communication module. The data processing module can process signals from the hoisting mechanism 2, the acting mechanism 3 and the monitoring mechanism 4.

[0035] It can be understood that the above embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and a number of modifications and improvements can be made, which belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A device for grinding of a bearing bush of a turbine shaft of a nuclear power plant, characterized in that, The device comprises a support frame (1), a lifting mechanism (2), an acting mechanism (3), a monitoring mechanism (4) and a control mechanism. The support frame (1) is installed on a steam turbine. The lifting mechanism (2) is installed on the support frame (1) and used for lifting a bearing bush of the steam turbine. The acting mechanism (3) is installed on the support frame (1) and used for operating the bearing bush of the steam turbine. The monitoring mechanism (4) is used for monitoring the use process of the device for grinding a bearing bush of a steam turbine of a nuclear power plant. The control mechanism is in communication connection with the lifting mechanism (2), the acting mechanism (3) and the monitoring mechanism (4).

2. The device for grinding the bushings of the turbine shaft of a nuclear power plant according to claim 1, characterized in that, A plurality of connecting holes (11) are formed in the support frame (1) and correspondingly arranged with mounting holes on a middle surface of the steam turbine.

3. The device for grinding the bushings of the turbine shaft of a nuclear power plant according to claim 1, characterized in that, The lifting mechanism (2) comprises an electric hoist (21) connected with the support frame (1) and a lifting chain connected with the electric hoist (21), and the lifting chain is connected with the bearing bush of the steam turbine.

4. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 1, characterized in that, The acting mechanism (3) comprises a mechanical arm (31) connected with the support frame (1) and a clamping jaw (32) connected with the mechanical arm (31), and the clamping jaw (32) is used for operating the bearing bush of the steam turbine.

5. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 1, characterized in that, The monitoring mechanism (4) comprises a temperature and humidity sensor (41) installed on the support frame (1).

6. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 1, characterized in that, The monitoring mechanism (4) comprises a vibration sensor (42) installed on the support frame (1).

7. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 1, characterized in that, The monitoring mechanism (4) further comprises an adjustable support (43) connected with the support frame (1) and an image collector (44) installed on the adjustable support (43).

8. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 7, characterized in that, The number of the image collectors (44) is four, and the four image collectors (44) are installed at four corner positions of the support frame (1).

9. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 1, characterized in that, The device further comprises a lubricant spraying head (5) installed on the support frame (1).

10. The device for grinding the bearing bush of the turbine shaft of the nuclear power plant according to claim 1, characterized in that, The control mechanism comprises a remote control operation module, a data processing module and a wireless communication module.

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