Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine

A high-medium pressure and steam turbine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of increased heat consumption of units, low assembly efficiency, low flow efficiency of high-medium pressure, etc., to reduce heat consumption and improve efficiency , the effect of reducing steam leakage loss

Inactive Publication Date: 2016-03-02
HARBIN TURBINE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of low efficiency of high and medium pressure flow, increased heat consumption of the unit, and low assembly efficiency due to the assembly gap between the assembly surfaces of the existing supercritical steam turbine unit. A New Integral High and High Pressure Inner Cylinder Applied in Supercritical Steam Turbine

Method used

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  • Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine
  • Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine
  • Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine

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specific Embodiment approach 1

[0010] Specific implementation mode one: see Figure 1 to Figure 3 Describe this embodiment, a new type of overall high and medium pressure inner cylinder applied to supercritical steam turbines described in this embodiment, including high and medium pressure inner cylinder 1, high pressure partition sleeve 5 and medium pressure No. 1 partition sleeve 7, the The high and medium pressure inner cylinder 1, the high pressure partition sleeve 5 and the medium pressure No. 1 partition sleeve 7 are integrated, and the blades of the high pressure part are directly installed on the high and medium pressure inner cylinder 1.

[0011] The high and medium pressure inner cylinder is an integral casting structure, the blades of the flow part are directly fixed on the high and medium pressure inner cylinder, reducing the number of assembly parts, the structure is simple, the machining and installation are time-saving and labor-saving, and the unit structure is simple. The assembly between p...

specific Embodiment approach 2

[0012] Specific embodiment 2: This embodiment is a further limitation of a new type of overall high and medium pressure inner cylinder applied to supercritical steam turbines described in specific embodiment 1. In this embodiment, the high-pressure steam inlet and the medium-pressure steam inlet , No. 0 high-pressure heater extraction port 2, No. 1 high-pressure heater extraction port 3, high and medium pressure steam inlet side balance holes, and the partition groove are integrated into one piece.

[0013] This embodiment can further reduce the amount of steam leakage, improve the efficiency of the high and medium pressure parts, reduce the heat consumption of the unit, and improve the economy.

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Abstract

The invention discloses a novel integrated high-medium-pressure internal cylinder applied to a supercritical steam turbine, relating to a high-medium-pressure internal cylinder structure of a steam turbine and aims at solving the problems of low high-medium-pressure through flow efficiency, unit heat consumption increment and low assembly efficiency caused by an assembling gap existing between both assembly surfaces of a high-pressure part and a medium-pressure part of the existing supercritical steam turbine unit. The high-medium-pressure internal cylinder, a high-pressure diaphragm sleeve and a 1# medium-pressure diaphragm sleeve are integrated, and a vane of the high-pressure part is directly arranged on the high-medium-pressure internal cylinder. A high-pressure steam inlet, a medium-pressure steam inlet, a 0# high-pressure heater steam extraction opening, a 1# high-pressure heater steam extraction opening, a high-medium-pressure steam inlet side balancing hole and a diaphragm slot are integrated into an integrated part. Due to the adoption of the integrated structure of the novel integrated high-medium-pressure internal cylinder, the efficiencies of the high-pressure part and the medium-pressure part of the unit are increased, steam leakage loss is reduced, the heat consumption of the whole unit is reduced, and the benefit of a power plant is increased; in addition, the high-medium-pressure assembly can be reduced, the processibility is good, the final assembly is simple, time and labor are saved, and the field installation period is shortened. The novel integrated high-medium-pressure internal cylinder is suitable for the supercritical steam turbine.

Description

technical field [0001] The invention belongs to the field of high and medium pressure inner cylinder structures of steam turbines. Background technique [0002] The high and medium pressure parts of the existing supercritical units have many parts that can be assembled. There are assembly surfaces between the parts and there are assembly gaps between the parts, which increases the steam leakage during the operation of the unit and reduces the efficiency of the unit. , increasing the heat consumption of the unit. And because there are many parts to assemble, the efficiency of the final assembly is low, the structure of the unit is complicated, and the processing and installation of the unit is time-consuming and laborious, which increases the cost. Contents of the invention [0003] The present invention aims to solve the problems of low efficiency of high and medium pressure flow, increased heat consumption of the unit, and low assembly efficiency due to the assembly gap ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/24
CPCF01D25/24
Inventor 王洪鹏王景生王成佳李伍亮李万军李肖霞毕春媚王雪梅董中杰徐国林
Owner HARBIN TURBINE
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