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Structure for fixing steam turbine flow guide plate for ship

A steam turbine and deflector technology, applied in the field of ship power, can solve the problems of difficult casting, poor safety and reliability, difficult inspection and maintenance, etc., and achieve the effects of simplifying the manufacturing structure, convenient maintenance, and improving inspectability

Pending Publication Date: 2018-12-07
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] The present invention solves the problems that the existing marine steam turbine deflector and the cylinder are cast together, resulting in difficult casting, difficult inspection and maintenance, and poor safety and reliability, and further provides a fixed marine steam turbine deflector structure

Method used

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  • Structure for fixing steam turbine flow guide plate for ship
  • Structure for fixing steam turbine flow guide plate for ship
  • Structure for fixing steam turbine flow guide plate for ship

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific implementation mode one: as Figure 1~2 As shown, the fixed marine steam turbine deflector structure of the present embodiment includes a deflector sleeve 1, a fixed plate 3, a plurality of ribs 2 and a plurality of hexagon socket screws 5, and the steam turbine deflector structure also includes a plurality of anti The loose gasket block 4, the guide sleeve 1 and the fixed plate 3 are fixed as a whole, the fixed plate 3 is located on one end of the guide sleeve 1, the rib plate 2 is a right-angled triangular plate, and two of each rib plate 2 One of the right-angled sides is fixed to the guide sleeve 1, and the other of the two right-angled sides of each rib 2 is fixed to the fixed plate 3. The plurality of ribs 2 are arranged in parallel and evenly distributed, and the inner hexagon The quantity of the screw 5 is consistent with the quantity of the anti-loosening washer block 4, and the fixed plate 3 is fixed on the cylinder by the hexagon socket head cap scre...

specific Embodiment approach 2

[0034] Specific implementation mode two: as figure 1 and figure 2 As shown, the flow guide sleeve 1 of this embodiment is composed of an upper flow guide sleeve and a lower flow guide sleeve, and the upper flow guide sleeve and the lower flow guide sleeve are symmetrically arranged up and down. This design ensures the vertical symmetrical structure of the steam flow channel, which reduces the aerodynamic loss of the steam in the flow channel. At the same time, the vertical symmetrical structure of the guide sleeve also simplifies the production and installation work, and is convenient for disassembly and maintenance. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0035] Specific implementation mode three: as figure 1 and figure 2As shown, the number of anti-loosening washer blocks 4 in this embodiment is an even number, and the number of anti-loosening washer blocks 4 ranges from 6 to 10. The upper guide sleeve and the lower guide sleeve pass through the same number of anti-loosen washer blocks. 4 and the same number of hexagon socket head screws 5 are fixed on the cylinder. With such a design, the anti-loosening washer block 4 can effectively prevent the screws on the deflector from loosening and falling off. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a structure for fixing a steam turbine flow guide plate for a ship, and relates to flow guide plate structures. The problems that an existing steam turbine flow guide plate forthe ship and a steam cylinder are casted into a whole, casting is difficult, checking and maintaining are difficult, and safety reliability is poor are solved. One fixing plate is located at one endof a flow guide sleeve, one of two right-angle sides of each rib plate is fixedly connected with the flow guide sleeve, the other of two right-angle sides of each rib plate is fixedly connected with the fixing plate, the multiple rib plates are arranged in parallel and are evenly distributed, the number of inner hexagon screws is consistent with the number of anti-loosening gasket blocks, the fixing plate is fixedly arranged on an air cylinder through the inner hexagon screws, each inner hexagon screw is sleeved with an anti-loosening gasket block, the gasket block gasket blocks are of bucket-shaped structures, annular grooves are machined in the opening ends of the anti-loosening gasket blocks in the circumference direction, and inner edges of the opening ends of the anti-loosening gasketblocks are tightly pressed on screw heads of the corresponding inner hexagon screws.

Description

technical field [0001] The invention relates to a deflector for a steam turbine, in particular to a deflector structure for a fixed marine steam turbine, which belongs to the field of ship power. Background technique [0002] The main difference between marine power steam turbines and commonly used power station steam turbines in operation is that commonly used power station steam turbines operate at a constant speed under constant conditions, while marine steam turbines operate at variable speeds under variable conditions. This requires marine steam turbines to have better safety, reliability and advancement. For this reason, it is necessary to continuously analyze and study the structure of the original marine steam turbine, and then optimize the structural design to achieve better safety, reliability and advancement of the marine steam turbine. Among them, improving the safety, reliability and advancement of the deflector is a design innovation work that needs to be stud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D9/00
CPCF01D9/00
Inventor 高雷陈齐李佳冀张红莲赵世群郭佳宋苗苗刘伟
Owner 中国船舶重工集团公司第七0三研究所
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