CN219317015U - Overflow water recovery system for vacuum pump steam-water separator - Google Patents

Abstract

The utility model discloses an overflow water recovery system of a steam-water separator of a vacuum pump, which comprises an air outlet pipeline of a condenser and a steam turbine, a water ring vacuum pump, a desalting water tank, the steam-water separator, a water collecting tank, a water pump, an intermediate heat exchanger and a controller, wherein a filtering baffle plate is arranged in the water collecting tank, a liquid level sensor is arranged in the water collecting tank, a signal output end of the liquid level sensor is in signal connection with a signal receiving end of the controller, and the controller is respectively and electrically connected with a second valve and the water pump. The advantages are that: 1. collecting overflow water of the steam-water separator as working fluid of a water ring vacuum pump to supplement water, so that water resources are fully utilized; 2. a filtering baffle is arranged in the water collecting tank, so that impurities are prevented from entering the water ring vacuum pump along with desalted water, and the failure of the water ring vacuum pump is avoided; 3. the liquid level sensor is arranged in the water collecting tank, and the controller is used for controlling the start and stop of the water pump, so that the intermittent discharge of water in the water collecting tank is realized, and the energy consumption is reduced.

Description

Overflow water recovery system for vacuum pump steam-water separator

Technical Field

The utility model relates to the technical field of overflow water recovery, in particular to an overflow water recovery system of a vacuum pump steam-water separator.

Background

In the running process of the condenser and the steam turbine, because the structure of the condenser and the steam turbine is not tight, air in the environment enters the equipment, if the condensed gases are not timely extracted, the pressure in the equipment is increased, and the safety and the efficiency of the condenser and the steam turbine are greatly influenced. In order to timely extract the condensed gas, the negative pressure of a unit vacuum system is maintained mainly through the arrangement of the water ring vacuum pump pair, after the steam-water mixture extracted by the water ring vacuum pump is separated by the steam-water separator, the gas exhaust gas is directly discharged into the atmosphere, and the liquid demineralized water overflows to a drainage well outside a factory building through the steam-water separator to be discharged as waste water, so that the waste of the demineralized water is caused.

The utility model comprises the following steps:

according to the defects of the prior art, the utility model aims to provide an overflow water recovery system of a steam-water separator of a vacuum pump.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the overflow water recovery system of the steam-water separator of the vacuum pump comprises an air outlet pipeline of a condenser and a steam turbine, a water ring vacuum pump, a desalting water tank, the steam-water separator, a water collecting tank, a water pump, an intermediate heat exchanger and a controller, wherein an outlet of the desalting water tank is communicated with a working fluid inlet of the water ring vacuum pump through a first valve;

the air outlet pipeline is communicated with the inlet of the water ring vacuum pump, the outlet of the water ring vacuum pump is communicated with the inlet of the steam-water separator, the liquid phase outlet of the steam-water separator is communicated with the inlet of the water collecting tank, the outlet of the water collecting tank is communicated with the water inlet of the water pump, the water outlet of the water pump is communicated with the inlet of the intermediate heat exchanger, and the outlet of the intermediate heat exchanger is communicated with the inlet of the desalination water tank through a second valve;

the water collecting tank is internally provided with a filtering baffle plate, a liquid level sensor is arranged in the water collecting tank, a signal output end of the liquid level sensor is in signal connection with a signal receiving end of the controller, and the controller is respectively and electrically connected with the second valve and the water pump.

Preferably, the filter baffle is obliquely arranged between the water collection tank inlet and the water collection tank outlet, and the end parts of the filter baffle are fixed with the inner wall of the water collection tank.

The utility model has the advantages that: 1. collecting overflow water of the steam-water separator, cooling by an intermediate heat exchanger, and then sending the overflow water into a desalting water tank to be used as working liquid of a water ring vacuum pump for supplementing water, so that water resources are fully utilized; 2. the filter baffle is arranged in the water collecting tank, so that impurities carried in overflow water can be filtered out, and the impurities are prevented from entering the water ring vacuum pump along with desalted water, so that the failure of the water ring vacuum pump is avoided; 3. the liquid level sensor is arranged in the water collecting tank, and the controller is used for controlling the start and stop of the water pump, so that the intermittent discharge of water in the water collecting tank is realized, and the energy consumption is reduced.

Description of the drawings:

in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

In the figure: the device comprises an air outlet pipeline 1, a water ring vacuum pump 2, a desalination water tank 3, a steam-water separator 4, a water collecting tank 5, a water pump 6, an intermediate heat exchanger 7, a controller 8, a first valve 9, a second valve 10, a filtering baffle 11 and a liquid level sensor 12.

The specific embodiment is as follows:

as shown in fig. 1, the overflow water recovery system of the vacuum pump steam-water separator 4 comprises an air outlet pipeline 1 of a condenser and a steam turbine, a water ring vacuum pump 2, a desalination water tank 3, the steam-water separator 4, a water collecting tank 5, a water pump 6, an intermediate heat exchanger 7 and a controller 8.

The outlet of the salt removal water tank 3 is communicated with the working fluid inlet of the water ring vacuum pump 2 through a first valve 9. The gas outlet pipeline 1 is communicated with the inlet of the water ring vacuum pump 2, the outlet of the water ring vacuum pump 2 is communicated with the inlet of the steam-water separator 4, the liquid phase outlet of the steam-water separator 4 is communicated with the inlet of the water collecting tank 5, the outlet of the water collecting tank 5 is communicated with the water inlet of the water pump 6, the water outlet of the water pump 6 is communicated with the inlet of the intermediate heat exchanger 7, and the outlet of the intermediate heat exchanger 7 is communicated with the inlet of the desalination water tank 3 through the second valve 10. The overflow water of the steam-water separator 4 is collected and is cooled by the intermediate heat exchanger 7, and then is sent into the desalting water tank 3 to be used as the working liquid of the water ring vacuum pump 2 for supplementing water, so that the overflow water is fully utilized.

Be equipped with filtering baffle 11 in header tank 5 incasement, filtering baffle 11 slope sets up between header tank 5 import and header tank 5 export to filtering baffle 11 tip is all fixed with header tank 5 inner wall, sets up filtering baffle 11 in header tank 5, can filter out the impurity that the overflow aquatic was carried secretly, avoids impurity along with demineralized water entering water ring vacuum pump 2, leads to water ring vacuum pump 2 to break down. A liquid level sensor 12 is arranged in the water collecting tank 5, a signal output end of the liquid level sensor 12 is connected with a signal receiving end of the controller 8 in a signal way, and the controller 8 is respectively and electrically connected with the second valve 10 and the water pump 6. The liquid level in the water collection tank 5 is detected through the liquid level sensor 12, and meanwhile, the second valve 10 and the water pump 6 are controlled to be opened and closed through the controller 8, so that water in the water collection tank 5 is intermittently fed into the desalination water tank 3, and the energy consumption is reduced.

The working description:

when the system is started, only the desalination water tank 3 supplies water to the working fluid of the water ring vacuum pump 2.

The water ring vacuum pump 2 pumps condensed gas in the condenser and the steam turbine into the steam-water separator 4 for steam-water separation, wherein the exhaust gas is directly discharged into the atmosphere, overflow water is conveyed into the water collecting tank 5, filtering and impurity removing are carried out by utilizing the filtering baffle 11, after the water is accumulated to a certain amount, the liquid level detected by the liquid level sensor 12 reaches a set value, a feedback signal is sent to the controller 8 (the controller 8 adopts a PLC controller), the controller 8 sends a control signal, so that the second valve 10 is opened, the water pump 6 is started, the accumulated water is pumped into the intermediate heat exchanger 7 from the water collecting tank 5, and the water enters the desalting water tank 3 as working solution of the water ring vacuum pump 2 after the temperature of the water is reduced by the intermediate heat exchanger 7, so as to play a role in recycling; when the liquid level detected by the liquid level sensor 12 reaches the lower limit value, the second valve 10 is closed, the water pump 6 is stopped, and the energy consumption is reduced.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (2)

1. The overflow water recovery system of the steam-water separator of the vacuum pump comprises an air outlet pipeline of a condenser and a steam turbine, a water ring vacuum pump, a desalination water tank, a steam-water separator and is characterized by also comprising a water collecting tank, a water pump, an intermediate heat exchanger and a controller, wherein an outlet of the desalination water tank is communicated with a working fluid inlet of the water ring vacuum pump through a first valve;

the air outlet pipeline is communicated with the inlet of the water ring vacuum pump, the outlet of the water ring vacuum pump is communicated with the inlet of the steam-water separator, the liquid phase outlet of the steam-water separator is communicated with the inlet of the water collecting tank, the outlet of the water collecting tank is communicated with the water inlet of the water pump, the water outlet of the water pump is communicated with the inlet of the intermediate heat exchanger, and the outlet of the intermediate heat exchanger is communicated with the inlet of the desalination water tank through a second valve;

the water collecting tank is internally provided with a filtering baffle plate, a liquid level sensor is arranged in the water collecting tank, a signal output end of the liquid level sensor is in signal connection with a signal receiving end of the controller, and the controller is respectively and electrically connected with the second valve and the water pump.

2. The overflow water recovery system of a vacuum pump steam-water separator according to claim 1, wherein the filter separator is disposed obliquely between the water collection tank inlet and the water collection tank outlet, and the filter separator ends are fixed to the water collection tank inner wall.

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