PATENT CLAIM ANALYSIS

Application Number: 15769048
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-02
Patent Classification: ["137", "596170"]

Abstract:
A trip system for a steam turbine closes a trip-and-throttle valve and a control valve of a steam turbine in an emergency. The trip system includes: an emergency shut-off device that shuts off supply of control oil for the trip-and-throttle valve and the control valve to close the trip-and-throttle valve and the control valve; and a drain device that includes a plurality of solenoid valves connected in parallel and drains the control oil by opening the solenoid valves. The emergency shut-off device includes a cylinder, a piston that slides in the cylinder, a spring that applies biasing force to the piston, a plurality of piston valves provided to the piston, and a plurality of chambers formed by the piston valves.

Claim (Index 1):
A trip system for a steam turbine that closes a trip-and-throttle valve and a control valve of a steam turbine in an emergency, the trip system comprising:\n an emergency shut-off device that shuts off supply of control oil for the trip-and-throttle valve and the control valve to close the trip-and-throttle valve and the control valve; and a drain device that includes a plurality of solenoid valves connected in parallel and drains the control oil by opening the solenoid valves, wherein the emergency shut-off device includes:\n a cylinder; \n a piston that slides in the cylinder; \n a spring that applies biasing force to the piston; \n a plurality of piston valves provided to the piston; and \n a plurality of chambers formed by the piston valves, \n the plurality of chambers includes:\n a transfer chamber that moves the piston from a normal position during normal operation to an emergency position when the control oil is drained from the transfer chamber, \n a supply chamber that supplies the control oil to the control valve in normal operation, \n a control-valve drainage chamber that drains the control oil from the control valve during the emergency, and \n a trip-and-throttle-valve drainage chamber that drains the control oil from the trip-and-throttle valve during the emergency, and \n piping through which the control oil is supplied includes:\n a first piping connected to the supply chamber; and \n a second piping that passes through an orifice and is connected to the drain device, the transfer chamber, the trip-and-throttle-valve drainage chamber, and the trip-and-throttle valve so that the drain device, the transfer chamber, the trip-and-throttle-valve drainage chamber, and the trip-and-throttle valve are in parallel.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 91.0
- Lexical Diversity: 2.52941
- Patent Class: 137.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15843814', '15528954', '11448895', '15506042', '15272871']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8118210689561791
- 35 USC 102 Novelty (BERT): 0.4695152400890875
- Combined Prediction Score: 0.77759048606947
- Mean Citation Score: 216.748636
- Max Citation Score: 226.25902
- Similarity Product: 192.2893566821801

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

Dataset: test