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Connection structure capable of realizing rapid disassembly and assembly, and used for helium gas turbine

A technology for connecting structures and turbines, which is applied in the direction of blade support components, stators, engine components, etc., can solve the problems of difficult disassembly and assembly of the turbine shell and difficult assembly, achieve the safety margin of protection strength, reduce the overall weight and structure simple compact effect

Pending Publication Date: 2019-03-01
中国船舶重工集团公司第七0三研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing helium gas compressor has a non-central split integral structure of the turbine casing, the turbine casing is not easy to disassemble, and the turbine rotor rotor disc is of an integrated structure, which makes assembly difficult, and further provides a machine that can Quick disassembly helium turbine connection structure

Method used

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  • Connection structure capable of realizing rapid disassembly and assembly, and used for helium gas turbine
  • Connection structure capable of realizing rapid disassembly and assembly, and used for helium gas turbine
  • Connection structure capable of realizing rapid disassembly and assembly, and used for helium gas turbine

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specific Embodiment approach 1

[0031] Specific implementation mode one: combine Figure 1 to Figure 5 Describe this embodiment, a helium turbine connection structure that can be quickly disassembled and assembled in this embodiment, it includes a turbine rotor 1 and a turbine stator 2, the turbine stator 2 is sleeved on the turbine rotor 1, and the two turbine stators 2 The ends are respectively connected with the external steam inlet casing 3 and the steam outlet casing 4,

[0032] The turbine rotor 1 includes a turbine front shaft 1-1, a turbine rear shaft 1-2, six rotor discs 1-3 and 2N long stay bolts 1-4, where N is a positive integer greater than or equal to 4,

[0033] The outer diameters of the six rotor discs 1-3 are the same, and N first cooling air circulation holes 1-3-1 are evenly distributed along the circumferential direction on the end face of each rotor disc 1-3, and two adjacent first cooling air circulation holes 1-3-1 Two first bolt holes 1-3-2 are evenly distributed between the air cir...

specific Embodiment approach 2

[0039] Specific implementation mode two: combination image 3 with Image 6 To illustrate this embodiment, the turbine rotor 1 of this embodiment also includes six stepped tooth seal rings 1-5, and a stepped tooth is provided between two adjacent rotor disks 1-3 among the six rotor disks 1-3. Sealing ring 1-5, there is a stepped tooth sealing ring 1-5 between the turbine front shaft 1-1 and the adjacent rotor disc 1-3, six stepped tooth sealing rings 1-5 and six stators The guide vane rings 2-2 are in one-to-one correspondence, and the six stator guide vane rings 2-2 are sealed with the stepped teeth 1-5-3 of the stepped tooth seal ring 1-5,

[0040] The outer diameters of the six stepped tooth seal rings 1-5 are the same, and N second cooling air circulation holes 1-5-1 are uniformly distributed along the circumferential direction on the end face of each stepped tooth seal ring 1-5, and each stepped tooth seal ring The N second cooling air circulation holes 1-5-1 on the rin...

specific Embodiment approach 3

[0042] Specific implementation mode three: combination image 3 with Figure 5 Describe this embodiment, the turbine rotor 1 of this embodiment also includes six moving blade units, each moving blade unit includes a number of moving blades 1-6, the root of each moving blade is provided with mortise teeth, each rotor disc A plurality of tenon grooves 1-3-3 matched with tenon teeth are evenly distributed on the outer circumference of 1-3, and the moving blade is connected with the rotor disc 1-3 through the mutually matched tenon teeth and tenon grooves 1-3-3. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a connection structure capable of realizing rapid disassembly and assembly, and used for a helium gas turbine, and relates to the field of helium gas compressors. The connection structure solves the problems that a turbine shell body is not easily disassembled and assembled because a turbine case is of a non-halved integrated structure, and the assembly difficulty is high because a turbine rotor and rotor wheel discs are of an integrated structure, in an existing helium gas compressor. According to the connection structure, a turbine stator sleeves a turbine rotor, thetwo ends of the turbine stator are connected with an external intake case and an exhaust case separately, a long stay bolt of the turbine rotor sequentially penetrates through first bolt holes of sixrotor wheel discs, one end of the long stay bolt is bolted with a turbine front shaft which is coaxially arranged, and the other end of the long stay bolt is bolted with a turbine rear shaft which iscoaxially arranged; and the turbine case is of an integrated cylindrical structure, six stator guide vane rings of the turbine stator are sequentially installed on the inner circumference of the turbine case from front to rear, and the six stator guide vane rings and the six rotor wheel discs are arranged in a staggered manner. The connection structure is used for rapidly disassembly and assemblyfor the turbine shell body of the helium gas compressor.

Description

technical field [0001] The invention relates to the field of helium gas compressors, in particular to a helium gas turbine connection structure that can be quickly disassembled. Background technique [0002] The turbine is a component in the gas turbine engine that uses high-temperature gas to drive the blades to rotate at high speed to drive the load to perform work. The helium compressor mainly uses helium as the working fluid. The turbine is an important part of the helium compressor. From the perspective of assembly structure and function, the turbine mainly includes the turbine rotor, turbine casing, intake casing, exhaust casing, stator guide and various stator rings. Since the overall size of the unit is small and the rotation speed is high, the requirements for sealing are relatively high. The turbine casing adopts a non-central integral structure, so it is difficult to design the structure of the turbine rotor. Due to the complex temperature field of the turbine,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D1/04F01D5/02F01D5/06F01D5/08F01D9/04F01D25/24F01D25/26
CPCF01D1/04F01D5/025F01D5/027F01D5/06F01D5/085F01D9/041F01D25/243F01D25/246F01D25/26
Inventor 郁顺旺马涛朱凯迪刘勋张馨
Owner 中国船舶重工集团公司第七0三研究所
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