Feed pump system for gas turbine
By adding a horizontal π bend and improving the connection structure in the gas turbine feedwater pump system, the leakage problem at the connection between the balance pipe and the feedwater pump was solved, and the sealing effect was improved.
Patent Information
- Application Number
- CN202422914989.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the gas turbine feedwater pump system, the interface connecting the balance pipe and the feedwater pump frequently leaks, resulting in poor sealing.
A horizontal π bend is added to the middle section of the balance pipe, and a flat thread design is adopted at the connection between the balance pipe and the water pump. A boss and a copper gasket are added to improve the sealing structure.
It effectively reduces leakage at the interface between the balance pipe and the water pump, and improves the sealing performance.
Smart Images
Figure CN223781569U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a power plant, concretely relates to a water supply pump system for gas turbine. BACKGROUND
[0002] The water supply pump is the important auxiliary equipment of the gas turbine, when using, the balance pipe installed on the water supply pump, its butt joint frequently leaks with the water supply pump connection. CONTENT
[0003] The utility model provides a water supply pump system for gas turbine, aims at solving above -mentioned problem.
[0004] The utility model discloses a water supply pump system for gas turbine, the system includes water supply pump, the balance pipe installed on water supply pump, (because gas turbine unit starts frequently, and steam temperature is high pressure, and temperature and pressure change greatly in the process of shutdown and operation, and balance pipe's own cold and hot expansion contracts sharply) balance pipe displacement makes its butt joint frequently leaks with water supply pump connection, based on this, design, balance pipe middle segment adds the bend, utilizes the bend and constitutes the buffer, reduces balance pipe's displacement, solves its butt joint frequently leaks with water supply pump connection problem.
[0005] A water supply pump system for gas turbine, the system includes water supply pump, the balance pipe installed on water supply pump, (because gas turbine unit starts frequently, and steam temperature is high pressure, and temperature and pressure change greatly in the process of shutdown and operation, and balance pipe's own cold and hot expansion contracts sharply) balance pipe displacement makes its butt joint frequently leaks with water supply pump connection, based on this, design, balance pipe middle segment adds the bend, utilizes the bend and constitutes the buffer, reduces balance pipe's displacement, solves its butt joint frequently leaks with water supply pump connection problem.
[0006] The above technical scheme is further refined, and the bend is a π bend.
[0007] The above technical scheme is further refined, and the bend is horizontal.
[0008] The above technical scheme is further refined, and the balance pipe frame is connected with two supports, and the connecting portion is located in front of and behind the bend.
[0009] The butt joint of the balance pipe and the water supply pump is designed with tapered threads (conventional design), which should be able to play a good sealing role, but it is greatly affected by the displacement of the balance pipe, and it is counterproductive, based on this, the butt joint of the balance pipe and the water supply pump is designed with flat threads and increased with a boss and a copper gasket.
[0010] The utility model has the advantages of reasonable design, structure, and effectively solves the problem of frequent leakage of the butt joint of the balance pipe and the water supply pump. DRAWINGS
[0011] Figure 1 It is a water supply pump system for gas turbine.
[0012] In the figure, water supply pump 1, balance pipe 2, horizontal π bend 2-1, support 3. DETAILED DESCRIPTION
[0013] As shown in the figure, a water supply pump system for a combustion engine, the system comprising a water supply pump 1, a balance pipe 2 mounted on the water supply pump 1, a horizontal π bend 2-1 arranged in the middle section of the balance pipe 2; the balance pipe 2 is supported on two supports 3 and connected with the two supports 3, the connection being located in front of and behind the horizontal π bend 2-1.
[0014] The butt joint of the balance pipe 2 and the water supply pump 1 is designed with flat threads and increased with a boss and a copper gasket.
[0015] The above embodiments are only for illustrating the practical technical concept and characteristics, the purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.
Claims
1. A feedwater pump system for gas turbines, the system comprising a feedwater pump and a balance pipe mounted on the feedwater pump, characterized in that, The balance pipe has a bend in the middle section; the bend is a π bend; the bend is horizontal; the balance pipe support is connected to two supports, and the connection is located before and after the bend; the interface between the balance pipe and the water pump adopts a flat thread design and is equipped with a boss and a copper washer.