Manual turning tool for gas turbine

Abstract

The utility model relates to the field of turning tools, in particular to a manual turning tool of a gas turbine. The manual turning tool for the gas turbine comprises a disc and a main shaft, the main shaft is fixedly connected to the middle of the right side of the disc, a manual turning stress application rod is fixedly connected to the middle of the main shaft, a manual turning handle is fixedly connected to the right side of the main shaft, a lengthened handle is slidably connected to the manual turning handle, and the lengthened handle and the manual turning stress application rod are each sleeved with a layer of plastic sleeve. According to the manual barring tool for the gas turbine, the manual barring force application rod, the lengthened handle and the manual barring handle are installed, and the working mode that the lengthened handle and the manual barring force application rod apply force at the same time is utilized, so that a rotor of a gas turbine generator set can be barred more easily; the situation that the gas turbine rotor is heated unevenly is avoided, meanwhile, by installing the auxiliary shaft, the bolt and the fixing column, force borne by the main shaft is reduced, and the service life of the main shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of cranking tools, in particular to a manual cranking tool for a gas turbine. Background Art

[0002] The GE 6F.03 gas turbine generator set is equipped with a variable speed load gearbox, which is a variable speed rotating mechanical device that converts the high speed (5231 rpm) output from the gas turbine end into the low speed (3000 rpm) output from the generator end. This device consists of a high-speed rotating shaft (with gears), a low-speed rotating shaft (with gears), a cranking motor, and a connecting lever (with a speed change gear). The cranking motor is essential for low-speed cranking of gas turbines. A Ø65 hexagonal connecting rod is connected to the end of the cranking motor rotor via a coupling. The hexagonal connecting rod serves as an auxiliary device for securing and rotating the manual cranking tool, providing space for the manual cranking tool to operate. Manual cranking must be performed continuously or at fixed positions, depending on the temperature range of the gas turbine's intertwining space. The cranking time is determined by the intertwining space temperature of the gas turbine. According to our gas turbine operating procedures, cranking can only be stopped when the intertwining space temperature drops below 65°C. Existing manual cranking tools are mostly operated by one person, which is not only labor-intensive but also difficult to achieve the torque required for the overall rotation of the gas turbine unit. This can easily cause uneven heating of the gas turbine rotor, leading to inevitable damage to the unit. Furthermore, the main shaft of the cranking tool can easily deform after prolonged use, affecting its proper operation.

[0003] Therefore, it is necessary to provide a new gas turbine manual turning tool to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a gas turbine manual turning tool.

[0005] The present invention provides a gas turbine manual cranking tool comprising: a disc and a main shaft, the main shaft is fixedly connected in the middle of the right side of the disc, a manual cranking force rod is fixedly connected in the middle of the main shaft, a manual cranking handle is fixedly connected to the right side of the main shaft, the manual cranking handle is slidably connected to an extended handle, and a plastic sleeve is covered on the extended handle and the manual cranking force rod. By installing the manual cranking force rod and the extended handle, first, two people are required to perform the manual cranking at the same time, one person holds the 400Nm extended handle, and the other person holds two of the four manual cranking force rods and exerts force at the same time, so that the rotating mechanical force overcomes the gravity of the gas turbine generator set rotor and continuously rotates the manual cranking device until the entire rotor of the gas turbine generator set gradually rotates. When two people operate the manual cranking device at the same time, it can save labor and meet the torque required for the overall rotation of the gas turbine set. By utilizing the working mode of the extended handle and the manual cranking force rod exerting force at the same time, the rotor of the gas turbine generator set can be cranked more easily, avoiding the occurrence of uneven heating of the gas turbine rotor.

[0006] Preferably, a second empty slot is provided inside the extended handle, and a manual turning handle is slidably connected inside the second empty slot, and several sliding slots are provided on the upper and lower sides of the extended handle, and there are five sliding slots. A first empty slot is provided on the upper and lower sides of the left side of the manual turning handle, and a return spring column is fixedly connected inside the first empty slot, and a stop column is fixedly connected to the top of the return spring column, and the stop column can be slidably connected inside the slide slot. First, the extended handle is put on the manual turning handle, and the stop column is pressed into the first empty slot by hand, so that the stop column enters the second empty slot along with the manual turning handle, and then the stop column is slid out of the slide slot by the return spring column, and the extended handle and the manual turning handle are fixed, thereby increasing the torque, saving effort, and preventing the extended handle from slipping during turning and affecting the use of the turning tool. At the same time, when the turning tool is not in use, the stop column can be slid out of the slide slot by hand, and then the extended handle can be taken out, reducing storage space and facilitating storage.

[0007] Preferably, the limiting columns are fixedly connected to both sides of the middle of the blocking column. By installing the limiting columns, the blocking column will not completely separate from the second slot under the action of the reset spring column, affecting the use of the reset spring column and the blocking column.

[0008] Preferably, auxiliary shafts are fixedly connected to the left side of the main shaft all around, and fixing columns are evenly fixedly connected to the left side of the auxiliary shaft. There are three fixing columns, and second threaded holes are provided inside the fixing columns. Bolts are threadedly connected to the second threaded holes. Several first threaded holes are provided around the right side of the disc, and the first threaded holes are threadedly connected to bolts through the second threaded holes. The first threaded holes and the second threaded holes are fixedly connected by bolts, so that the main shaft and the auxiliary shaft are fixedly connected to the disc, so that when the turning tool is rotated, the force applied to the main shaft can be dispersed through the auxiliary shaft, reducing the force applied to the main shaft and increasing the service life of the main shaft. When the turning tool is not in use, the main shaft and the auxiliary shaft can be separated from the disc by bolts, reducing storage space and facilitating storage.

[0009] Preferably, a manual turning shaft fixing sleeve is fixedly connected to the middle of the left side of the disc. By installing the manual turning shaft fixing sleeve, the manual turning tool can be directly installed on the outside of the outer hexagonal connecting rod of the turning motor. After installation, it is observed that when the manual turning tool rotates, it can drive the turning motor rotor to rotate, so that the turning motor rotor does not slip.

[0010] Compared with related technologies, the gas turbine manual turning tool provided by the present invention has the following beneficial effects:

[0011] 1. The utility model provides a manual cranking tool for a gas turbine. By installing a manual cranking force rod, an extension handle and a manual cranking handle, and utilizing a working mode in which the extension handle and the manual cranking force rod exert force simultaneously, the rotor of the gas turbine generator set can be cranked more easily, thereby avoiding the occurrence of uneven heating of the gas turbine rotor.

[0012] 2. The utility model provides a manual turning tool for a gas turbine. By installing an auxiliary shaft, bolts and a fixing column, when the turning tool is rotated, the force applied to the main shaft can be dispersed through the auxiliary shaft, thereby reducing the force applied to the main shaft and increasing the service life of the main shaft. When the turning tool is not in use, the main shaft and the auxiliary shaft can be separated from the disc by bolts, thereby reducing storage space and facilitating storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a preferred embodiment of a manual turning tool for a gas turbine provided by the present invention;

[0014] Figure 2 for Figure 1 A structural side view of a manual turning tool for a gas turbine is shown;

[0015] Figure 3 for Figure 1 The structural diagram of the main and auxiliary shaft installation structure shown;

[0016] Figure 4 for Figure 1 The schematic diagram of the internal structure of the extended handle is shown.

[0017] Numbers in the figure: 1. Disc; 2. Main shaft; 3. Manual turning force rod; 4. Manual turning sleeve for fixing the shaft; 5. Manual turning handle; 6. Extension handle; 7. Auxiliary shaft; 8. Fixed column; 9. Slide groove; 10. Stop column; 11. First empty slot; 12. Second empty slot; 13. Reset spring column; 14. Limit column; 15. Bolt; 16. First threaded hole; 17. Second threaded hole. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0020] See also Figures 1 to 4 , the embodiment of the present invention provides a gas turbine manual cranking tool, the gas turbine manual cranking tool includes: a disc 1 and a main shaft 2, the main shaft 2 is fixedly connected to the middle of the right side of the disc 1, a manual cranking force rod 3 is fixedly connected to the middle of the main shaft 2, a manual cranking handle 5 is fixedly connected to the right side of the main shaft 2, the manual cranking handle 5 is slidably connected to an extension handle 6, the extension handle 6 and the manual cranking force rod 3 are both covered with a layer of plastic sleeve, by installing the manual cranking force rod 3 and the extension handle 6, first of all, this manual cranking requires two people to perform at the same time, one person holds the 400Nm extension handle 6. Another person holds two of the four manual cranking force rods 3 and applies force at the same time, so that the rotating mechanical force overcomes the gravity of the gas turbine generator set rotor and continuously rotates the manual cranking device until the rotor of the gas turbine generator set gradually rotates. When two people operate the manual cranking device at the same time, it can save labor and meet the torque required for the overall rotation of the gas turbine set. By using the working mode of exerting force simultaneously with the extended handle 6 and the manual cranking force rod 3, the rotor of the gas turbine generator set can be cranked more easily, avoiding the occurrence of uneven heating of the gas turbine rotor.

[0021] In the embodiments of the present invention, please refer to Figure 4, a second slot 12 is provided inside the extended handle 6, and a manual turning handle 5 is slidably connected inside the second slot 12. A plurality of slide slots 9 are provided on the upper and lower sides of the extended handle 6, and there are five slide slots 9. A first slot 11 is provided on the upper and lower sides of the left side of the manual turning handle 5. A reset spring column 13 is fixedly connected inside the first slot 11, and a stop column 10 is fixedly connected to the top of the reset spring column 13. The stop column 10 is slidably connected to the inside of the slide slot 9. First, put the extended handle 6 on the manual turning handle 5, and manually move the stop column 10 Press into the first slot 11, so that the blocking column 10 enters the second slot 12 along with the manual turning handle 5, and then the blocking column 10 is slid out of the slide slot 9 by the return spring column 13, fixing the extended handle 6 and the manual turning handle 5, increasing the torque, playing a labor-saving role, and preventing the extended handle 6 from slipping during turning and affecting the use of the turning tool. At the same time, when the turning tool is not in use, the blocking column 10 can be slid out of the slide slot 9 by hand, and then the extended handle 6 can be taken out, reducing storage space and facilitating storage.

[0022] In the embodiments of the present invention, please refer to Figure 4 The limiting columns 14 are fixedly connected to both sides of the middle of the blocking column 10. By installing the limiting columns 14, the blocking column 10 will not completely break away from the second slot 12 under the action of the reset spring column 13, affecting the use of the reset spring column 13 and the blocking column 10.

[0023] In the embodiments of the present invention, please refer to Figure 1 and Figure 3 , the auxiliary shaft 7 is fixedly connected to the left side of the main shaft 2 all around, and the fixing columns 8 are evenly fixedly connected to the left side of the auxiliary shaft 7. There are three fixing columns 8, and a second threaded hole 17 is provided inside the fixing column 8. The second threaded hole 17 is threadedly connected to the bolt 15. A plurality of first threaded holes 16 are provided around the right side of the disc 1, and the first threaded holes 16 are threadedly connected to the bolt 15 through the second threaded holes 17. The first threaded holes 16 and the second threaded holes 17 are fixedly connected by the bolts 15, so that the main shaft 2 and the auxiliary shaft 7 are fixedly connected to the disc 1, so that when the turning tool is rotated, the force applied to the main shaft 2 can be dispersed through the auxiliary shaft 7, thereby reducing the force applied to the main shaft 2 and increasing the service life of the main shaft 2, and when the turning tool is not in use, the main shaft 2 and the auxiliary shaft 7 can be separated from the disc 1 by the bolts 15, thereby reducing storage space and facilitating storage.

[0024] In the embodiments of the present invention, please refer to Figure 2 A manual turning shaft fixing sleeve 4 is fixedly connected to the middle of the left side of the disc 1. By installing the manual turning shaft fixing sleeve 4, the manual turning tool can be directly installed on the outside of the outer hexagonal connecting rod of the turning motor. After installation, it is observed that when the manual turning tool rotates, it can drive the turning motor rotor to rotate, so that the turning motor rotor does not slip.

[0025] The working principle of the gas turbine manual cranking tool provided by the utility model is as follows: when in use, first use the manual cranking fixed shaft sleeve 4 to directly cover the outer side of the outer hexagonal connecting rod of the cranking motor, then cover the extended handle 6 on the manual cranking handle 5, and press the blocking column 10 into the first empty slot 11 by hand, so that the blocking column 10 enters the second empty slot 12 along with the manual cranking handle 5, and slide the blocking column 10 out of the slide slot 9 through the reset spring column 13, fixing the extended handle 6 and the manual cranking handle 5, increasing the torque, playing a labor-saving role, and preventing the extended handle 6 from slipping during cranking and affecting the use of the cranking tool. Afterwards, one person holds the 400Nm extended handle 6, and the other person holds two of the four manual cranking force rods 3 and exerts force at the same time, so that the rotating mechanical force overcomes the gravity of the gas turbine generator rotor and continuously rotates the manual cranking. The device is used until the rotor of the gas turbine generator set gradually rotates. When two people operate the manual turning device at the same time, it can save effort and meet the torque required for the overall rotation of the gas turbine set. The working mode of using the extended handle 6 and the manual turning force rod 3 to exert force at the same time can make it easier to turn the rotor of the gas turbine generator set, avoiding the occurrence of uneven heating of the gas turbine rotor. At the same time, the first threaded hole 16 and the second threaded hole 17 are fixedly connected by the bolt 15, so that the main shaft 2 and the auxiliary shaft 7 are fixedly connected to the disc 1, so that when the turning tool is rotated, the force applied to the main shaft 2 can be dispersed through the auxiliary shaft 7, reducing the force applied to the main shaft 2 and increasing the service life of the main shaft 2. When the turning tool is not in use, the main shaft 2 and the auxiliary shaft 7 can be separated from the disc 1 by the bolt 15, reducing storage space and facilitating storage.

[0026] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas turbine manual turning tool, characterized in that: include: A disc (1) and a main shaft (2), wherein the middle of the right side of the disc (1) is fixedly connected to the main shaft (2), the middle of the main shaft (2) is fixedly connected to a manual turning force rod (3), the right side of the main shaft (2) is fixedly connected to a manual turning handle (5), the manual turning handle (5) is slidably connected to an extension handle (6), and the extension handle (6) and the manual turning force rod (3) are both covered with a layer of plastic sleeve.

2. The gas turbine manual turning tool according to claim 1, characterized in that: A second slot (12) is provided inside the extended handle (6), and a manual turning handle (5) is slidably connected inside the second slot (12). A plurality of slide slots (9) are provided on the upper and lower sides of the extended handle (6), and there are five slide slots (9).

3. The gas turbine manual turning tool according to claim 1, characterized in that: A first slot (11) is provided on both the upper and lower sides of the left side of the manual turning handle (5), a return spring column (13) is fixedly connected inside the first slot (11), a stop column (10) is fixedly connected to the top of the return spring column (13), and the stop column (10) is slidably connected inside the slide groove (9).

4. The gas turbine manual turning tool according to claim 3, characterized in that: Limiting columns (14) are fixedly connected to both sides of the middle of the blocking column (10).

5. The gas turbine manual turning tool according to claim 1, characterized in that: Auxiliary shafts (7) are fixedly connected to the left side of the main shaft (2) all around, and fixed columns (8) are evenly fixedly connected to the left side of the auxiliary shaft (7). There are three fixed columns (8), and second threaded holes (17) are provided inside the fixed columns (8). Bolts (15) are threadedly connected to the second threaded holes (17).

6. The gas turbine manual turning tool according to claim 1, characterized in that: A plurality of first threaded holes (16) are provided around the right side of the disc (1), and the first threaded holes (16) are all threadedly connected to bolts (15) through second threaded holes (17).

7. The gas turbine manual turning tool according to claim 1, characterized in that: A manual turning shaft fixing sleeve (4) is fixedly connected to the middle of the left side of the disc (1).

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