PATENT CLAIM ANALYSIS

Application Number: 15759175
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["415", "230000"]

Abstract:
The present invention discloses an elastic sheet used for a turbine follow-up suspended steam seal belt and a steam seal structure thereof, which comprises a plurality of elastic L-shaped metal sheets correspondingly overlapped on the same rim, one rim of the L-shaped metal sheet is a toothed rim, the toothed notches of the toothed rim extend laterally through the entire toothed rim so that the other rim of the L-shaped metal sheet can be bent longitudinally toward the toothed rim to form an arc shape; the toothed notches and the toothed tabs of the toothed rims of the plurality of L-shaped metal sheets are misoriented with each other to cover the toothed notches, and the other rim of the L-shaped metal sheet is fixed within the arc-shaped steam seal ring block along the steam seal ring teeth, the steam seal ring teeth extend out from the top of the toothed rim to seal the gap between the seal ring teeth and the turbine main shaft, and the toothed rims of the L-shaped metal sheet perform elastic beating reciprocately down after being subjected to the force at the top; the invention has the advantages of simple structure and the sealing of the main shaft side is well achieved; and the main shaft of the turbine can be completely achieved by utilizing the elastic characteristics of the seal elastic sheet of the invention.

Claim (Index 7):
A turbine follow-up suspended steam seal structure, comprising a steam seal circular ring arranged around a turbine main shaft, the steam seal circular ring is composed of a plurality of arc-shaped steam seal circular ring blocks abutting each other, the inner diameters of the arc-shaped steam seal ring block are axially provided with steam seal ring teeth  401  corresponding to the main shaft of the turbine along the main shaft, characterized in that the follow-up steam seal structure comprises a plurality of elongated metal sheets, the metal sheet is longitudinally bent in an elongated shape to form an elongated L-shape, one rim of the L-shaped metal sheet is a toothed rim alternately formed from a plurality of toothed notches and toothed tabs, the toothed notches extend laterally through the entire toothed rim so that the other rim of the L-shaped metal sheet can be bent longitudinally toward the toothed rim to form an arc shape; the toothed notches continue to extend forward an opening on the other rim, so that the toothed tabs of the toothed rim suspend in the turbine steam seal gap due to the opening of the other rim and can perform elastic beating reciprocately up and down; the same rims of the plurality of L-shaped metal sheets are correspondingly overlapped with each other, the toothed notches and the toothed tabs of the toothed rims of the plurality of L-shaped metal sheets are misoriented with each other to cover the toothed notches, the other rims of the overlapped L-shaped metal sheets are fixed along the steam seal ring teeth in the arc-shaped steam seal ring blocks, wherein a suspended springing space is provided in the arc-shaped steam seal ring block for at least a portion of the length containing an opening on the other rim of the metal sheet, the suspended springing space allows the toothed rims of the metal sheet to perform elastic beating reciprocately down after being subjected to the force at the top; the toothed rims  101  of the overlapped L-shaped metal sheet are provided in a form-fitting manner to the seal ring teeth at the back of the steam facing side A of the steam seal ring teeth, the top of the toothed rim protrudes out of the steam seal ring tooth for sealing the gap between the seal ring teeth and the main shaft of the turbine.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 2.51042
- Patent Class: 415.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12922461', '11427866', '14294812', '15761867', '13578639']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7817308896348213
- 35 USC 102 Novelty (BERT): 0.4344634591501717
- Combined Prediction Score: 0.7470041465863564
- Mean Citation Score: 168.073378
- Max Citation Score: 179.32652
- Similarity Product: 128.94255195102448

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test