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CN-224214232-U - Turbine rotor and turbine

CN224214232UCN 224214232 UCN224214232 UCN 224214232UCN-224214232-U

Abstract

The application relates to a turbine rotor and a turbine. The turbine rotor comprises a turbine shaft, a turbine disc and a connecting assembly, wherein a connecting groove is formed in the first end face of the turbine shaft in the axial direction of the turbine shaft, the turbine disc is arranged at one end of the turbine shaft, which is provided with the first end face, the turbine disc comprises a disc body and a connecting shaft, the connecting shaft is arranged at one side, facing the turbine shaft, of the disc body, and the connecting shaft is inserted into the connecting groove. The connecting assembly is connected with the connecting shaft and the turbine shaft, and the connecting direction of the connecting assembly is perpendicular to the first end face. Through set up the spread groove at the turbine axle to set up the connecting axle in disk body one side, peg graft the connecting axle in the spread groove and carry out preliminary connection and radial positioning to turbine disk and turbine axle. The connecting shaft and the turbine shaft are further connected, fixed and axially positioned by the connecting assembly. The connecting shaft is inserted into the turbine shaft and the connecting assembly is axially provided with a matched connecting mode, so that the axial space of the turbine shaft is not occupied, and more space can be reserved for the outer peripheral surface of the turbine shaft.

Inventors

  • PEI LI
  • LIU YEKUI
  • WANG MINGZHE
  • GUO LIMING
  • LI WENPENG

Assignees

  • 北京宇航推进科技有限公司

Dates

Publication Date
20260508
Application Date
20250731

Claims (10)

  1. 1. A turbine rotor, comprising: A turbine shaft (1), wherein a connecting groove (111) is formed in a first end surface (101) of the turbine shaft (1) along the axial direction; A turbine disk (2) arranged at one end of the turbine shaft (1) with the first end face (101), wherein the turbine disk (2) comprises a disk body (21) and a connecting shaft (22), the connecting shaft (22) is arranged at one side of the disk body (21) facing the turbine shaft (1), the connecting shaft (22) is inserted into the connecting groove (111), and And a connecting assembly (3) for connecting the connecting shaft (22) and the turbine shaft (1), wherein the connecting direction of the connecting assembly (3) is perpendicular to the first end face (101).
  2. 2. Turbine rotor according to claim 1, characterized in that the connecting shaft (22) is connected with the turbine shaft (1) by an interference fit.
  3. 3. The turbine rotor according to claim 1, characterized in that a surface of the disc (21) facing the turbine shaft (1) abuts against the first end face (101) of the turbine shaft (1).
  4. 4. Turbine rotor according to claim 1, wherein the connection assembly (3) comprises: The disc body (21), the connecting shaft (22) and the turbine shaft (1) are correspondingly provided with a plurality of pin holes (112), and each locating pin (31) is correspondingly connected in the pin hole (112).
  5. 5. The turbine rotor as claimed in claim 4, wherein a portion of the positioning pin (31) connecting the turbine shaft (1) is exposed in the connection groove (111).
  6. 6. The turbine rotor as recited in claim 4, characterized in that the dowel pin (31) is interference fit connected within the dowel bore (112).
  7. 7. The turbine rotor as claimed in claim 4, characterized in that the outer circumferential surface of the locating pin (31) is provided with external threads, the inner wall of the pin bore (112) is provided with matching internal threads, and the locating pin (31) is threadedly connected within the pin bore (112).
  8. 8. Turbine rotor according to any one of claims 4 to 7, wherein the connection assembly (3) further comprises: A fastener (32) coaxially arranged with the axis of the connecting shaft (22), wherein the fastener (32) is in threaded connection with the connecting shaft (22) and the turbine shaft (1); The fastener (32) comprises a radially arranged baffle plate (321), and the baffle plate (321) is positioned on one side of the disc body (21) away from the connecting shaft (22) and is used for abutting against the positioning pin (31).
  9. 9. The turbine rotor according to any one of claims 1 to 7, characterized in that the turbine shaft (1) comprises: A shaft shoulder (11), the shaft shoulder (11) having the first end face (101) provided with the connecting groove (111), and And the shaft neck (12) is connected to one end of the shaft shoulder (11) which is far away from the connecting groove (111), and the diameter of the shaft neck (12) is smaller than that of the shaft shoulder (11).
  10. 10. A turbine comprising a turbine rotor according to any one of claims 1 to 9.

Description

Turbine rotor and turbine Technical Field The application relates to the technical field of turbines, in particular to a turbine rotor and a turbine. Background The turbine is a power device driven by high-temperature high-pressure gas to convert chemical energy into mechanical energy. The turbine rotor is composed of a turbine disc, a turbine shaft and other parts. The turbine disc and the turbine shaft are generally manufactured in a split machining mode and then assembled into a whole through a connecting structure. The turbine rotor is responsible for transmitting mechanical work (namely torque), and comprises a high-temperature component and a normal-temperature or low-temperature component, and has higher rotating speed and higher rotating precision requirement. Therefore, the connection of the turbine disk and the turbine shaft needs to meet the requirements of rigidity, concentricity and strength. The common disc shaft connection modes are flange type, locating pin type and welding type. Flange-type mounting is to connect the flange plate at the end of the turbine shaft to the turbine plate by means of fasteners (e.g., bolts) and torque is transmitted by shear forces of the fasteners. The flange type installation occupies a large axial distance and sometimes cannot meet the installation requirement of the turbine rotor. Disclosure of utility model Accordingly, it is necessary to provide a turbine rotor and a turbine, which solve the problem that the flange occupies an axial space when the turbine rotor is mounted and affects the turbine assembly. In a first aspect, the present application provides a turbine rotor comprising: the turbine shaft is provided with a connecting groove along the first axial end face of the turbine shaft; the turbine disk is arranged at one end of the turbine shaft, which is provided with the first end face, and comprises a disk body and a connecting shaft, wherein the connecting shaft is arranged at one side of the disk body facing the turbine shaft and is inserted into the connecting groove, and And the connecting assembly is used for connecting the connecting shaft and the turbine shaft, and the connecting direction of the connecting assembly is perpendicular to the first end face. In one embodiment, the connecting shaft is in interference fit connection with the turbine shaft. In one embodiment, a surface of the disk facing the turbine shaft abuts the first end face of the turbine shaft. In one embodiment, the connection assembly includes: The disc body, the connecting shaft and the turbine shaft are correspondingly provided with a plurality of pin holes, and each positioning pin is correspondingly connected in each pin hole. In one embodiment, a section of the positioning pin connected with the turbine shaft is exposed in the connecting groove. In one embodiment, the dowel is interference fit within the pin bore. In one embodiment, the outer circumferential surface of the locating pin is provided with external threads, the inner wall of the pin hole is provided with matched internal threads, and the locating pin is in threaded connection with the pin hole. In one embodiment, the connection assembly further comprises: The fastening piece is coaxially arranged with the axis of the connecting shaft and is in threaded connection with the connecting shaft and the turbine shaft. In one embodiment, the fastener includes a radially disposed baffle located on a side of the disc facing away from the connecting shaft for abutting the locating pin. In one embodiment, the turbine shaft comprises: a shaft shoulder provided with the first end face and provided with the connecting groove, and And the shaft neck is connected to one end of the shaft shoulder, which is far away from the connecting groove, and the diameter of the shaft neck is smaller than that of the shaft shoulder. In a second aspect, the present application also provides a turbine comprising a turbine rotor as in any of the embodiments above. According to the turbine rotor, the connecting grooves are formed in the turbine shaft, the connecting shaft is arranged on one side of the disc body of the turbine disc, and the connecting shaft is inserted into the connecting grooves to preliminarily connect and radially position the turbine disc and the turbine shaft. The connecting shaft and the turbine shaft are connected through the connecting assembly, and the connecting shaft and the turbine shaft are further connected, fixed and axially positioned. The connecting shaft is inserted into the turbine shaft and the connecting assembly is axially provided with a matched connecting mode, so that the axial space of the turbine shaft is not occupied, more space can be reserved for the outer peripheral surface of the turbine shaft, and the turbine rotor can meet the installation requirements under various installation environments. Drawings FIG. 1 is an exploded view of a turbine rotor according to one embodiment of the present ap