CN204572086U - For the drained water recovery system of saturated vapour turbine equipment - Google Patents

Abstract

The utility model discloses a drain recovery system for saturated steam turbine equipment, which comprises a main steam valve, a steam-water separator, a drain expander and a condenser connected with the saturated steam turbine, the main steam valve, the steam-water separator and the saturated steam turbine body The hydrophobic flow into the hydrophobic expander. The drain expander is vertically arranged, and the drain of the saturated steam turbine equipment is connected to the drain expander from bottom to top according to the pressure from high to low, and the separation is carried out considering the different physical properties of gas and liquid, and the vacuum pumping system is used to realize the drain expander It operates under negative pressure to realize step-by-step self-flow of drainage and save the cost of drainage recycling. The saturated steam and non-condensable gas separated by the hydrophobic expansion vessel are sent to the condenser, and the non-condensable gas and evaporated saturated steam are extracted through the vacuum system, and the saturated steam and condensed steam are cooled and recovered by circulating water , The system piping system is simple and stable, improves energy utilization efficiency, reduces desalinated water loss, and improves the environment.

Description

Hydrophobic Recovery System for Saturated Steam Turbine Equipment

technical field

The utility model relates to a hydrophobic recovery system, in particular to a hydrophobic recovery system for saturated steam turbine equipment.

Background technique

As a high-efficiency and energy-saving way of waste heat recovery to realize cascade utilization of energy, saturated steam turbine has been applied in my country's iron and steel, building materials, electric power, non-ferrous metals, coking, chemical and other industries, and has achieved obvious economic and environmental benefits. the

The saturated steam turbine drainage is different from the steam drainage of the superheated steam turbine, because the superheated steam turbine usually adopts a double-layer arrangement, and the hydrophobic expansion vessel is used, which is easy to realize the gradual self-flow of the drainage and recover the drainage of the steam turbine body. Saturated steam turbines are usually arranged in a single layer or renovated by using old factory buildings. Due to limited space, some units do not recycle the drainage of saturated steam turbine equipment and discharge them directly to the outside, which affects the environment of the steam turbine room and causes the loss of desalinated water. Some units use horizontally arranged drain expanders to collect drain from saturated steam turbine equipment, and then pump it into the hot water well of the condenser through a drain pump for reuse, and the cost of drain recovery is relatively high.

Utility model content

The purpose of the utility model is to provide a drainage recovery system with simple piping system and low drainage recovery cost to recover the drainage of saturated steam turbine equipment.

The utility model discloses a drain recovery system for saturated steam turbine equipment, which comprises a main steam valve, a steam-water separator, a drain expander and a condenser connected with the saturated steam turbine, the main steam valve, the steam-water separator and the saturated steam turbine body The hydrophobic flow into the hydrophobic expander. The hydrophobic expander is vertically arranged, and the saturated steam and non-condensable gas separated by it are sent to the condenser, and the hydrophobic flow flows into the hot water well of the condenser.

The upper part of the hydrophobic expander is connected with an upper outlet pipe for discharging non-condensable gas and saturated steam to communicate with the steam space at the upper part of the condenser.

The upper part of the hydrophobic expander and the opposite side of the upper outlet pipeline interface are connected with an upper hydrophobic inlet pipeline for accepting the drainage of the saturated steam turbine body.

The middle part of the drain expander and the same side of the upper drain inlet pipe interface are connected with a middle drain inlet pipe for receiving the drain from the main steam valve.

The lower part of the drain expander and the same side of the middle drain inlet pipe interface are connected with a lower drain inlet pipe for accepting the drain of the steam-water separator.

The bottom of the hydrophobic expander is connected with a hydrophobic outlet pipe to communicate with the hot water well of the condenser.

The working principle of the utility model is as follows: the drainage of the saturated steam turbine equipment is respectively connected to the vertically arranged hydrophobic expansion vessel through pipelines, and then the saturated steam and drainage separated from the hydrophobic expansion vessel are respectively connected to different parts of the condenser: The upper steam space of the hydrophobic expander is connected with the steam space of the condenser, and then the non-condensable gas and the evaporated saturated steam are pumped out through the vacuum system, in which the saturated steam and the condensed steam are cooled and recovered by circulating water, without The condensed gas is discharged through the vacuum system to ensure that the pressure of the drain expander is consistent with that of the condenser, which is in a negative pressure state; the drain recovered from the bottom of the drain expander flows into the hot water well of the condenser by gravity. The piping system of the system is simple and stable, which improves the energy utilization efficiency, reduces the loss of desalted water, and improves the environment.

In the utility model, the hydrophobic expander is set up in a vertical arrangement, and the hydrophobic pressing force of the saturated steam turbine equipment is connected to the hydrophobic expander from the bottom to the top in order from high to low, and the gas and liquid are separated in consideration of the different physical properties and states, and the vacuum is used. The system realizes the operation of the hydrophobic expander in a negative pressure state, realizes the step-by-step self-flow of the drain, and saves the cost of drain recovery.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

Fig. 2 is a schematic structural diagram of the prior art.

Detailed ways

As shown in Figure 1, this embodiment discloses a drain recovery system for saturated steam turbine equipment, which mainly includes a main steam valve 2, a steam-water separator 3, a drain expander 4 and a condenser respectively connected with the saturated steam turbine 1 5. The main steam valve 2, the steam-water separator 3 and the main body of the saturated steam turbine 1 flow into the drain expander 4. The hydrophobic expander 4 is vertically arranged, and the saturated steam and non-condensable gas separated by it are sent into the condenser 5, and the hydrophobic water flows into the hot water well 51 of the condenser 5 by itself.

The upper part of the hydrophobic expander 4 is connected with an upper outlet pipe 6 for discharging non-condensable gas and saturated steam, which communicates with the steam space at the upper part of the condenser 5 .

The upper, middle, and lower parts of the upper, middle, and lower parts of the upper outlet pipe 6 of the drain expander 4 are sequentially connected with the upper drain inlet pipe 7 for receiving the drain of the saturated steam turbine 1 body, the middle drain inlet pipe 8 for receiving the drain of the main steam valve 2 and the Undertake the lower drain inlet pipe 9 of the steam separator 3 drain.

The bottom of the hydrophobic expander 4 is connected with a hydrophobic outlet pipe 10 to communicate with the hot water well 51 of the condenser 5 .

The drain of the saturated steam turbine equipment is respectively connected to the vertically arranged drain expander through pipes, and then the separated saturated steam and drain are respectively connected to different parts of the condenser: the upper steam space of the drain expander and the condenser The upper steam space is connected, and then the non-condensable gas and the evaporated saturated steam are pumped out through the vacuum system, in which the saturated steam and condensed steam are cooled and recovered by circulating water, and the non-condensable gas is discharged through the vacuum system to ensure drainage The pressure of the expansion vessel is consistent with that of the condenser, which is in a negative pressure state; the water recovered from the bottom of the expansion vessel flows into the hot water well of the condenser by gravity. The piping system of the system is simple and stable, which improves the energy utilization efficiency, reduces the loss of desalted water, and improves the environment.

The drain expander is set up in a vertical arrangement, and the drain pressure of the saturated steam turbine equipment is connected from bottom to top on the drain expander in turn from high to low, and the separation is carried out considering the different physical properties of the gas and liquid, and the vacuum system is used to realize the drain The expander operates under negative pressure to realize the step-by-step self-flow of drainage and save the cost of drainage recycling.

Claims (6)

1. the drained water recovery system for saturated vapour turbine equipment, comprise the main stop valve, steam-water separator, hydrophobic development unit and the vapour condenser that are communicated with saturated vapour turbine, in the hydrophobic inflow hydrophobic development unit of main stop valve, steam-water separator and saturated turbine body, it is characterized in that: described hydrophobic development unit vertical, its isolated saturated vapour and incoagulable gas are sent in vapour condenser, hydrophobic gravity flow enters in the hot well of vapour condenser.

2., as claimed in claim 1 for the drained water recovery system of saturated vapour turbine equipment, it is characterized in that: the top of described hydrophobic development unit is connected with and is communicated with the air space on described vapour condenser top with the upper outlet pipeline of saturated vapour for discharging incoagulable gas.

3., as claimed in claim 2 for the drained water recovery system of saturated vapour turbine equipment, it is characterized in that: the top of described hydrophobic development unit, the offside of described upper outlet pipe joint are connected with the hydrophobic inlet pipe in top for accepting saturated turbine proper water drain.

4., as claimed in claim 3 for the drained water recovery system of saturated vapour turbine equipment, it is characterized in that: the homonymy of the middle part of described hydrophobic development unit, the hydrophobic inlet tube connection in described top is connected with for accepting the hydrophobic inlet pipe in the hydrophobic middle part of main stop valve.

5., as claimed in claim 4 for the drained water recovery system of saturated vapour turbine equipment, it is characterized in that: the homonymy of the bottom of described hydrophobic development unit, the hydrophobic inlet tube connection in described middle part is connected with for accepting the hydrophobic inlet pipe in the hydrophobic bottom of steam-water separator.

6., as claimed in claim 1 for the drained water recovery system of saturated vapour turbine equipment, it is characterized in that: the bottom of described hydrophobic development unit is connected with hydrophobic outlet conduit and is communicated with the hot well of described vapour condenser.