CN211041872U

CN211041872U - Turbo generator set condenser circulating water pipeline arrangement structure of power plant

Info

Publication number: CN211041872U
Application number: CN201921786375.XU
Authority: CN
Inventors: 於震跃; 光旭; 任渊源; 吴骅鸣; 丁雁湘; 徐红波
Original assignee: China Energy Engineering Group Zhejiang Electric Power Design Institute Co ltd
Current assignee: China Energy Engineering Group Zhejiang Electric Power Design Institute Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-07-17
Anticipated expiration: 2029-10-23

Abstract

A circulating water pipeline arrangement structure of a condenser of a steam turbine generator unit of a power plant comprises a water inlet pipe, a water return pipe and a condenser, wherein the water inlet pipe and the water return pipe are arranged in a staggered mode, the water inlet pipe is composed of a vertically arranged water inlet main pipe and at least two water inlet branch pipes vertically arranged on the water inlet main pipe, and the water return pipe is composed of a vertically arranged water return main pipe and at least two water return branch pipes vertically arranged on the water return main pipe; one end of the water inlet main pipe is connected with a water inlet of the condenser through a water inlet branch pipe, and the other end of the water inlet main pipe is embedded at the bottom of the ground and connected with a circulating water pipeline outside the machine room; one end of the water return main pipe is connected with a water return port of the condenser through a water return branch pipe, the other end of the water return main pipe is embedded at the bottom of the ground and connected with a circulating water pipeline outside the machine room, and the embedded parts of the water inlet main pipe and the water return main pipe are arranged in a staggered manner; the novel building has the characteristics of simple structure, shock resistance, capability of effectively reducing the initial investment of civil engineering, capacity of a steam turbine room and the like.

Description

Turbo generator set condenser circulating water pipeline arrangement structure of power plant

Technical Field

The utility model relates to a turbo generator set condenser circulating water pipeline arrangement structure in power plant, concretely relates to side direction steam extraction turbo generator set condenser circulating water pipeline and a gallows arrangement structure thereof in power plant belongs to thermal power factory design technical field.

Background

The condenser is a heat exchanger for cooling steam turbine exhaust of the pure condensing steam turbine generator unit, and a condenser circulating water pipeline provides circulating water cooling water for cooling exhaust steam of the condenser; the natural conditions of different areas, the general plane arrangement of the power plant and the requirements of the condenser on water quantity and water quality have corresponding water supply equipment, cooling equipment, water supply and drainage buildings and the like, and the equipment and the buildings form a water supply system of the power plant. At present, a condenser circulating water pipeline of a lateral steam exhaust steam turbine generator unit of a conventional thermal power plant is arranged in a circulating water pit below zero meters in a steam turbine room. Generally, condenser circulating water pipelines (2 water inlet pipelines/2 water return pipelines) are arranged in parallel in a straight line in a circulating water pit, and are connected with an industrial water pipeline which is buried after the water is discharged from a steam engine room for 1 meter. The arrangement mode has the defects that the circulating water pipeline is long, the circulating water pit occupies a large area, and the conventional condenser circulating water pipeline has weak shock resistance.

In addition, no ground building is arranged between the pump room and the water inlet room which are arranged in the open air, so that the civil construction investment can be reduced, but the electrical protection grade and the corrosion prevention requirements of the equipment are relatively high, the number of the configured hoisting equipment can be properly reduced, and the investment of main equipment such as a motor, hoisting equipment and the like is relatively increased due to the large span and the large floor area of the circulating water pump room of the large-capacity unit. Therefore, how to save the initial investment cost of the power plant and improve the working efficiency of the equipment becomes a primary problem.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a simple structure, have the shock resistance, can effectively reduce civil engineering initial cost, reduce the turbo generator set condenser circulating water pipeline arrangement structure of the volumetric power plant of steam turbine room.

The utility model aims at providing a circulating water pipeline arrangement structure of a condenser of a turbo generator set of a power plant, which comprises a water inlet pipe, a water return pipe and a condenser, wherein the water inlet pipe and the water return pipe are arranged in a staggered way, the water inlet pipe consists of a vertically arranged water inlet main pipe and at least two water inlet branch pipes vertically arranged on the water inlet main pipe, and the water return pipe consists of a vertically arranged water return main pipe and at least two water return branch pipes vertically arranged on the water return main pipe; one end of the water inlet main pipe is connected with a water inlet of the condenser through a water inlet branch pipe, and the other end of the water inlet main pipe is embedded at the bottom of the ground and connected with a circulating water pipeline outside the machine room; one end of the water return main pipe is connected with a water return port of the condenser through a water return branch pipe, the other end of the water return main pipe is embedded at the bottom of the ground and connected with a circulating water pipeline outside the machine room, and the embedded parts of the water inlet main pipe and the water return main pipe are arranged in a staggered manner.

Furthermore, at least one large pull rod transverse compensator is arranged on the water inlet main pipe and the water return main pipe, and a plurality of main pipe supports are arranged on two sides of the large pull rod transverse compensator.

Furthermore, two large pull rod transverse compensators are arranged on the water inlet branch pipe and the water return branch pipe, and a plurality of branch pipe brackets are arranged between the two large pull rod transverse compensators.

Furthermore, the main pipe support comprises a fixed support, a first horizontal limiting support, a damping support, a spring hanger and a second horizontal limiting support which are sequentially arranged on the water inlet main pipe and the water return main pipe from bottom to top.

Furthermore, the branch pipe support comprises a first guide support, a damping support, a sliding support and a second guide support which are arranged on the two water inlet branch pipes and the two water return branch pipes from left to right in sequence.

The utility model has the advantages of: 1. reduce the initial investment of the engineering construction of the power plant.

(1) The initial investment of a circulating water pipeline is reduced by shortening the length of the circulating water pipeline of the condenser;

(2) by eliminating a circulating water pipeline pit, the initial investment of civil engineering is reduced;

(3) the longitudinal length of the steam turbine room is shortened, the volume of the steam turbine room is reduced, and the initial investment of civil engineering is reduced;

2. through reasonable setting of the supporting and hanging frame, the shock resistance of the condenser circulating water pipeline is greatly improved.

3. Through the reasonable big pull rod lateral compensator that sets up, reduce interface power and the moment of condenser equipment that pipeline and equipment displacement arouse by a wide margin, for example the displacement that causes, condenser equipment expend with heat and contract with cold of the displacement that the industrial water pipe outside the factory (buried pipeline) arouses because of the land subsides.

Drawings

Fig. 1 is a schematic top view of the present invention;

fig. 2 is a schematic structural view of a water inlet pipe and a condenser according to the present invention;

fig. 3 is the schematic structural diagram of the water return pipe and the condenser.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-3, the utility model relates to a steam turbine generator set condenser circulating water pipeline arrangement structure of power plant, including inlet tube 2, return pipe 3 and condenser 1, inlet tube 2 and return pipe 3 height dislocation arrangement, inlet tube 2 by the vertical setting female pipe 21 of intaking and set up at least two branch pipe sets 22 of intaking on the female pipe 21 perpendicularly, return pipe 3 by the vertical setting return main pipe 31 of returning water and set up at least two return branch pipe 32 on the female pipe 31 of returning water perpendicularly; one end of the water inlet main pipe 21 is connected with a water inlet of the condenser 1 through a water inlet branch pipe 22, and the other end of the water inlet main pipe is embedded at the bottom of the ground and is connected with a circulating water pipeline outside the machine room; one end of the water return main pipe 31 is connected with a water return port of the condenser 1 through a water return branch pipe 32, the other end of the water return main pipe is embedded at the bottom of the ground to 1 meter outside the steam turbine room and is connected with a water conservancy project professional circulating water pipeline, and the embedded parts of the water inlet main pipe 21 and the water return main pipe 31 are arranged in a staggered manner.

Referring to fig. 2-3, at least one large pull rod transverse compensator 4 is arranged on the water inlet main pipe 21 and the water return main pipe 31, and a plurality of main pipe brackets are arranged on two sides of the large pull rod transverse compensator 4; the large pull rod transverse compensator 4 is used for compensating radial displacement of the condenser and the branch pipe pipeline to the main pipe pipeline caused by expansion with heat, contraction with cold and other factors.

Referring to fig. 2-3, two large pull rod transverse compensators 4 are arranged on the water inlet branch pipe 22 and the water return branch pipe 32, and a plurality of branch pipe brackets are arranged between the two large pull rod transverse compensators 4; the two large pull rod transverse compensators 4 are respectively positioned at the position of a condenser interface flange and the connecting position of the condenser interface flange and the main pipe pipeline, and the two large pull rod transverse compensators are used for absorbing the radial displacement of the condenser and the main pipe pipeline to the branch pipe pipeline caused by the factors of expansion with heat and contraction with cold, ground settlement and the like.

Referring to fig. 2-3, the main pipe support comprises a fixed support 5, a first horizontal limiting support 6, a damping support 7, a spring hanger 8 and a second horizontal limiting support 9 which are sequentially arranged on a water inlet main pipe 21 and a water return main pipe 31 from bottom to top; the fixing support is mainly used for isolating the influence on the main pipe pipeline and the branch pipe pipeline caused by factors such as thermal expansion and cold contraction of the buried pipeline outside the steam turbine room, ground settlement and the like; the two horizontal limiting brackets and the damping bracket are mainly used for bearing horizontal earthquake force and keeping the stability of the vertically arranged main pipe pipeline when an earthquake occurs; the main function of the spring hanger is to bear the own weight of the main pipe pipeline.

Referring to fig. 2 to 3, the branch pipe bracket includes a first guide bracket 10, a damping bracket 11, a sliding bracket 12, and a second guide bracket 13, which are sequentially disposed from left to right on two water inlet branch pipes 22 and a water return branch pipe 32. The two guide supports are mainly used for bearing horizontal earthquake force, keeping the stability of the branch pipe pipeline and bearing the weight of the branch pipe pipeline when an earthquake occurs; the damping support mainly has the functions of bearing horizontal earthquake force and keeping the stability of the branch pipe pipeline when an earthquake occurs; the main function of the sliding support is to bear the weight of the branch pipe.

The specific embodiments described herein are merely illustrative of the principles of the present invention and its efficacy, and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.

Claims

1. A circulating water pipeline arrangement structure of a condenser of a steam turbine generator unit of a power plant comprises a water inlet pipe, a water return pipe and a condenser, and is characterized in that the water inlet pipe and the water return pipe are arranged in a staggered mode, the water inlet pipe is composed of a vertically arranged water inlet main pipe and at least two water inlet branch pipes vertically arranged on the water inlet main pipe, and the water return pipe is composed of a vertically arranged water return main pipe and at least two water return branch pipes vertically arranged on the water return main pipe; one end of the water inlet main pipe is connected with a water inlet of the condenser through a water inlet branch pipe, and the other end of the water inlet main pipe is embedded at the bottom of the ground and connected with a circulating water pipeline outside the machine room; one end of the water return main pipe is connected with a water return port of the condenser through a water return branch pipe, the other end of the water return main pipe is embedded at the bottom of the ground and connected with a circulating water pipeline outside the machine room, and the embedded parts of the water inlet main pipe and the water return main pipe are arranged in a staggered manner.

2. The arrangement structure of the circulating water pipeline of the condenser of the turbo generator unit in the power plant according to claim 1, wherein at least one large pull rod lateral compensator is arranged on the water inlet main pipe and the water return main pipe, and a plurality of main pipe brackets are arranged on two sides of the large pull rod lateral compensator.

3. The arrangement structure of the circulating water pipeline of the condenser of the turbo generator unit of the power plant according to claim 1 or 2, wherein two large pull rod lateral compensators are arranged on the water inlet branch pipe and the water return branch pipe, and a plurality of branch pipe brackets are arranged between the two large pull rod lateral compensators.

4. The arrangement structure of the circulating water pipeline of the condenser of the turbo generator unit in the power plant according to claim 2, wherein the main pipe support comprises a fixed support, a first horizontal limiting support, a damping support, a spring hanger and a second horizontal limiting support which are sequentially arranged on the water inlet main pipe and the water return main pipe from bottom to top.

5. The arrangement structure of the circulating water pipeline of the condenser of the turbo generator unit in the power plant according to claim 3, wherein the branch pipe support comprises a first guide support, a damping support, a sliding support and a second guide support which are sequentially arranged on the two water inlet branch pipes and the water return branch pipes from left to right.