阅读说明：本技术 一种独立的手动盘车装置及盘车结构 (Independent manual barring gear and barring structure ) 是由 段增辉 谭俊 欧楚雄 杨晖 卢平 邱健 李继朝 李进 周赵伟 吴婷 陈娇红 王 于 2021-01-26 设计创作，主要内容包括：本发明公开了一种独立的手动盘车装置及盘车结构,包括撑杆、转动设置在撑杆上的压杆、转动设置在压杆上表面的顶杆和齿轮,顶杆的旋转中心与压杆的旋转中心平行,顶杆远离撑杆的一侧设置有能够与压杆接触的凸台,齿轮上设置有若干个能够与顶杆的顶端传动连接的齿。本发明的有益效果是：本方案采用连杆机构和杠杆原理,具有结构简单、装拆方便、操作便捷的优点,能够完全独立于原有的盘车装置,避免原有盘车装置的零件受损而导致手动盘车的功能受限,提高了机组的安全性。(The invention discloses an independent manual barring gear and a barring structure, which comprise a support rod, a pressure rod rotationally arranged on the support rod, an ejector rod rotationally arranged on the upper surface of the pressure rod and a gear, wherein the rotation center of the ejector rod is parallel to that of the pressure rod, a boss capable of being in contact with the pressure rod is arranged on one side of the ejector rod, away from the support rod, and a plurality of teeth capable of being in transmission connection with the top end of the ejector rod are arranged on the gear. The invention has the beneficial effects that: this scheme adopts link mechanism and lever principle, has simple structure, installs and removes the advantage of convenience, simple operation, can be totally independent of original barring device, avoids original barring device's part impaired and lead to the function of manual barring to be limited, has improved the security of unit.)

1. An independent manual barring gear, its characterized in that: the novel push rod mechanism comprises a support rod (13), a press rod (12) rotatably arranged on the support rod (13), a push rod (11) rotatably arranged on the upper surface of the press rod (12) and a gear (17), wherein the rotation center of the push rod (11) is parallel to that of the press rod (12), a boss (19) capable of contacting with the press rod (12) is arranged on one side, away from the support rod (13), of the push rod (11), and a plurality of teeth capable of being in transmission connection with the top end of the push rod (11) are arranged on the gear (17).

2. An independent manual barring gear according to claim 1 wherein: one end of the support rod (13) far away from the pressure rod (12) is connected with a support plate (18).

3. An independent manual barring gear according to claim 1 wherein: one end of the pressure lever (12) far away from the mandril (11) is connected with an extension bar (14).

4. A self-contained manual turning gear according to claim 3, wherein: the extension bar (14) is sleeved in the compression bar (12).

5. An independent manual barring gear according to any one of claims 1 to 4 wherein: the pressure lever (12) is detachably connected with the stay bar (13) through a bolt.

6. An independent manual barring gear according to any one of claims 1 to 4 wherein: the ejector rod (11) is detachably connected with the pressure rod (12) through a bolt.

7. An independent manual barring gear according to any one of claims 1 to 4 wherein: the boss (19) is triangular, and the surface of the boss (19) below the boss is a plane which can be connected with the surface of the pressure lever (12).

8. The utility model provides an independent manual barring structure which characterized in that: comprising a housing support base (20), a housing (21) arranged on the housing support base (20), and two rotor couplings (22) arranged in the housing (21), wherein the gear (17) of any one of claims 1 to 7 is arranged between the two rotor couplings (22) and is in transmission connection with the rotor couplings (22), and the stay bar (13) is arranged on the housing support base (20) and is positioned below the housing (21).

9. An independent manual barring construction according to claim 8 wherein: the supporting plate (18) used for supporting the supporting rod (13) is arranged on the housing supporting seat (20).

10. An independent manual barring construction according to claim 9 wherein: the supporting plate (18) is horizontally welded on the housing supporting seat (20).

Technical Field

The invention relates to the technical field of power generation of steam turbines and gas turbines, in particular to an independent manual barring gear and a barring structure.

Background

Steam turbine, gas turbine shafting all need be equipped with the barring gear to eliminate the rotor and prevent rotor from taking place hot bending because of the temporary bending that stops for a long time, and the barring gear generally is motor drive (few use hydraulic drive). However, in order to prevent the electric (or hydraulic) barring gear from being unusable at the time of power failure or other faults, it is necessary that the unit has a manual barring function. The traditional practice in the industry is to add a special wrench at the tail of the barring motor and to drive the motor, so as to drive the barring device to rotate and further drive the rotor. The manual barring function is realized by combining the original barring device, and the manual barring and the original barring device share parts. If the mechanical part of the original barring gear fails, such as a gear, the manual barring function of the unit is lost. At this point, if the unit is in a hot state, no barring gear is available, which would cause the rotor to thermally buckle.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide an independent manual barring device and a barring structure, wherein the device does not share parts with the original barring device, can carry out barring even when the parts of the original barring device break down, and can improve the safety of a unit.

The invention is realized by the following technical scheme: the utility model provides an independent manual barring gear, includes the vaulting pole, rotates the depression bar that sets up on the vaulting pole, rotates ejector pin and the gear that sets up at the depression bar upper surface, and the rotation center of ejector pin is parallel with the rotation center of depression bar, and one side that the ejector pin kept away from the vaulting pole is provided with the boss that can contact with the depression bar, is provided with the tooth that a plurality of can be connected with the top transmission of ejector pin on the gear.

Furthermore, in order to better realize the invention, one end of the support rod, which is far away from the pressure rod, is connected with a support plate.

Furthermore, in order to better realize the invention, one end of the pressure lever, which is far away from the ejector rod, is connected with an extension rod.

Furthermore, in order to better realize the invention, the extension bar is sleeved in the compression bar.

Further, in order to better realize the invention, the pressure lever and the stay bar are detachably connected through a bolt.

Furthermore, in order to better realize the invention, the ejector rod is detachably connected with the pressure rod through a bolt.

Furthermore, in order to better realize the invention, the boss is triangular, and the surface of the boss below the boss is a plane which can be connected with the surface of the pressure rod.

An independent manual barring structure comprises a housing supporting seat, a housing arranged on the housing supporting seat and two rotor couplers arranged in the housing, wherein a gear is arranged between the two rotor couplers and is in transmission connection with the rotor couplers, and a supporting rod is arranged on the housing supporting seat and is located below the side of the housing.

Furthermore, in order to better realize the invention, the housing supporting seat is provided with a supporting plate for supporting the stay bar.

Furthermore, in order to better realize the invention, the supporting plate is horizontally welded on the housing supporting seat.

The beneficial effect that this scheme obtained is: this scheme adopts link mechanism and lever principle, has simple structure, installs and removes the advantage of convenience, simple operation, can be totally independent of original barring device, avoids original barring device's part impaired and lead to the function of manual barring to be limited, has improved the security of unit.

Drawings

FIG. 1 is a schematic view of the installation of a manual barring gear;

FIG. 2 is a schematic view of the operation of the manual barring gear;

FIG. 3 is a schematic view of the operation of the manual barring gear;

FIG. 4 is a schematic view of the installation of the gears;

the device comprises 11-ejector rods, 12-compression rods, 13-support rods, 14-extension rods, 17-gears, 18-support plates, 19-bosses, 20-housing support seats, 21-housings and 22-rotor couplers.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1:

as shown in fig. 1, in the present embodiment, an independent manual barring gear includes a supporting rod 13, a pressing rod 12 rotatably disposed on the supporting rod 13, a push rod 11 rotatably disposed on an upper surface of the pressing rod 12, and a gear 17, a rotation center of the push rod 11 is parallel to a rotation center of the pressing rod 12, a boss 19 capable of contacting with the pressing rod 12 is disposed on a side of the push rod 11 away from the supporting rod 13, and a plurality of teeth capable of being in transmission connection with a top end of the push rod 11 are disposed on the gear 17.

The jigger structure comprises a housing support seat 20, a housing 21 arranged on the housing support seat 20, and two rotor couplers 22 arranged in the housing 21, wherein a gear 17 is arranged between the two rotor couplers 22 and is in transmission connection with the rotor couplers 22, and a support rod 13 is arranged on the housing support seat 20 and is positioned below the side of the housing 21.

When the turning is needed, the pressure rod 12 and the ejector rod 11 are installed in place, and the ejector rod 11 is meshed with the gear 17. As shown in fig. 4, the gear 17 is installed between two rotor couplings 22, here, the installation position of the adjusting shim between the rotor couplings 22, and the gear 17 is installed without the original gear of the electric barring or the hydraulic barring. The thickness of the gear 17 can be matched within a certain range, and the function of adjusting the gasket is achieved, so that the installation of a shaft system is not influenced.

As shown in fig. 2 and 3, the ejector rod 11 is rotated upward to drive the gear 17 to rotate, and the gear 17 drives the rotor coupling 22 to rotate, thereby driving the shafting of the whole steam turbine to rotate. When the gear 17 rotates for a certain angle, the ejector rod 11 is separated from the teeth, the press rod 12 and the ejector rod 11 can rotate downwards, the ejector rod 11 goes around the top point of one tooth and enters the next tooth groove, at the moment, the press rod 12 continues to rotate upwards to drive the gear 17 to rotate, and manual barring is achieved for multiple times in a circulating mode.

Example 2:

on the basis of the above embodiments, in this embodiment, the housing supporting base 20 is provided with the supporting plate 18 for supporting the stay bar 13.

The support plate 18 is used as an installation foundation of the support rod 13, so that the stability of the support rod 13 can be improved, the space below the housing 21 is reasonably utilized, the rooting space on the basis of the steam turbine is not occupied, and the space utilization rate is improved. The pressure generated during turning is transmitted to the housing support base 20, and the housing 21 is not subjected to any pressure, so that additional requirements on the strength of the housing 21 are not generated.

In this embodiment, the support plate 18 is horizontally welded to the housing support base 20. This can improve the strength of connection between the support plate 18 and the housing support base 20, and improve the stability of the support plate 18. A diagonal brace connected between the support plate 18 and the housing support base 20 may be provided below the support plate 18 to further improve the strength and stability of the support plate 18

Example 3:

on the basis of the above embodiment, in the present embodiment, the end of the pressing rod 12 far away from the top rod 11 is connected with the extension rod 14. The use of the extension bar 14 facilitates the control of the rotation of the strut 12, making the operation more convenient.

In this embodiment, the extension bar 14 is sleeved in the compression bar 12. Thereby facilitating the connection or the disconnection of the extension bar 14 and the pressure bar 12 and facilitating the operation when the vehicle is required to be turned. After the barring is completed, the extension rod 14 is convenient to disassemble, so that the extra space is avoided, and meanwhile, the parts are convenient to manage in a unified mode.

Example 4:

on the basis of the above embodiments, in the present embodiment, the pressing rod 12 and the supporting rod 13 are detachably connected through a latch. The ejector rod 11 is detachably connected with the pressure rod 12 through a bolt. Therefore, the press rod 12 and the ejector rod 11 can be conveniently mounted and dismounted, after the dismounting, the occupied area of parts is small, and the parts can be conveniently stored and managed.

Example 5:

in addition to the above embodiments, in the present embodiment, the boss 19 is triangular, and the surface of the boss 19 located below is a plane capable of being connected to the surface of the pressure rod 12. Therefore, when the boss 19 is in contact with the pressure lever 12, the contact area between the pressure lever 12 and the boss 19 can be increased, the pressure intensity received by the pressure lever 12 in unit area is reduced, the problem that the pressure lever 12 is bent and deformed under the pressure action of the boss 19 can be avoided, the shape precision of the pressure lever 12 is ensured, and the barring efficiency is prevented from being influenced.

Example 6:

on the basis of the above embodiment, in the present embodiment, the housing 21 is divided into an upper half and a lower half. The barring gear is arranged below the lower half part, and the lower half part of the housing 21 is provided with an opening so as to facilitate the extension of the ejector rod 11 and the pressure rod 12. The upper half part of the housing 21 can be detached to facilitate maintenance, and the use of the barring gear is not affected when the upper half part is detached. The opening of the lower half of the housing 21 is provided with a cover plate, and the opening is closed by the cover plate when turning is not needed.

In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.