CN205860805U - A kind of thermal power plant pumped vacuum systems and pump group - Google Patents
A kind of thermal power plant pumped vacuum systems and pump group Download PDFInfo
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- CN205860805U CN205860805U CN201620839384.0U CN201620839384U CN205860805U CN 205860805 U CN205860805 U CN 205860805U CN 201620839384 U CN201620839384 U CN 201620839384U CN 205860805 U CN205860805 U CN 205860805U
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Abstract
This utility model relates to thermal power generating technology field, it is specifically related to a kind of thermal power plant pumped vacuum systems and pump group, including the entrance condenser being sequentially connected in series, one-level Roots vaccum pump, interstage cooler, two grades of Roots vaccum pumps, aftercooler, water ring vacuum pump and gas-liquid separator.Inlet porting condenser in this pumped vacuum systems pipeline before condenser expellant gas enters Roots vaccum pump, the gas entering Roots vaccum pump is carried out condensation process, reduce the temperature of gas, reduce volume flow, expand the range of application in thermal power generation vacuum system field of Roots's water ring vacuum pump group, use two-stage series connection air-cooled roots vacuum pump, the end vacuum of pump group can be reduced further, thus improve the economy of Turbo-generator Set.This vacuum pumping pump group simple in construction, equipment occupation space is little, and energy consumption is low, and vacuum is improved effect and become apparent from.
Description
Technical field
This utility model relates to thermal power generating technology field, is specifically related to a kind of thermal power plant pumped vacuum systems and pump
Group.
Background technology
Thermal power generation utilizes Steam Actuation steam turbine to rotate and generates electricity, and generally installs evacuation at turbine discharge mouth
Equipment, Main Function is the incondensable gas extracting condenser out, maintains optimum vacuum, improves heat energy and turns the efficiency of mechanical energy.By
In pipeline and housing imprecision, air can leak into, thus destroy condenser vacuum, unfavorable to Turbine Safety economical operation, when
When air content is big, the oxygen content of condensation water can be made to increase and aggravate equipment corrosion.
Traditional evacuating equipment is water ring vacuum pump, or series connection vacuum pump, owing to working solution temperature deviates for a long time
Design load, causes water ring vacuum pump serious cavitation erosion, and inefficiency；Energy consumption plus vacuum pump increases, the reality of pump group
Border effective pumping speed reduces.
Existing evacuating equipment is made up of lobe pump little water ring vacuum pump of connecting, on the one hand, the non-noncondensing gas of its suction
In containing a large amount of steam, beyond the actual suction capactity of this type water ring vacuum pump, cause energy consumption to increase；On the other hand, its
The scope of application is limited by lobe pump suction temperature, it is impossible to be applied to the Steam Turbine dimension of turbine discharge temperature higher (>=60 DEG C)
Hold vacuum, otherwise will be due to roots pump rotor expanded by heating, dynamic and static gaps reduces and causes device damage.
Utility model content
The purpose of this utility model is for the problems referred to above, it is provided that a kind of thermal power plant pumped vacuum systems, improves sieve
The working condition of thatch water-ring vacuum system, expands the scope of application of system, improves the suction capactity of system；This utility model also carries
For a kind of thermal power plant vacuum pumping pump group, this pump group includes frame and the pumped vacuum systems being fixed in frame, and this pump group has
There is simple in construction, save the energy, highly versatile.
Embodiment of the present utility model is achieved in that
A kind of thermal power plant pumped vacuum systems, including entrance condenser, one-level Roots vaccum pump, interstage cooler, two
Level Roots vaccum pump, aftercooler, water ring vacuum pump and gas-liquid separator；Described entrance condenser is true with described one-level Roots
The air inlet pipe of empty pump is connected by connecting tube, the exhaustor of described one-level Roots vaccum pump and the inlet end of described interstage cooler
Being connected by connecting tube, the exhaust end of described interstage cooler is connected by connecting tube with the air inlet pipe of described two grades of Roots vaccum pumps
Logical, the exhaustor of described two grades of Roots vaccum pumps is connected by connecting tube with the inlet end of described aftercooler, described water ring
The inlet end of vacuum pump is connected by connecting tube with described aftercooler, the outlet side of described water ring vacuum pump and described gas-liquid
Separator is connected by connecting tube.
In this embodiment, it is provided with entrance condenser before one-level Roots vaccum pump so that what condenser was discharged does not coagulates
Stagnation of QI body first carries out condensation process in entrance condenser, and liquid is formed in the congealed into fractional condensation in gas, and the vacuum of gas obtains
To promoting so that the scope of application of Roots vaccum pump is wider, improves the suction capactity of system.
In this utility model optional embodiment, described thermal power plant pumped vacuum systems also includes condensate water discharging
System, described condensate water discharging subsystem includes condensate line and discharge outlet, described entrance condenser, institute's interstage cooler,
Described aftercooler and described gas-liquid separator are connected by described condensate line with described discharge outlet respectively, described final stage
It is communicated with condensate line between cooler and described water ring vacuum pump.
In this utility model optional embodiment, arrange between described entrance condenser and described one-level Roots vaccum pump
There is Pneumatic butterfly valve.
In this utility model optional embodiment, between described water ring vacuum pump and described gas-liquid separator, it is provided with work
Making liquid cooler, described working solution cooler, described water ring vacuum pump and described gas-liquid separator collectively constitute working solution circulation
Subsystem, the outlet side of described water ring vacuum pump is connected by connecting tube with the inlet end of described gas-liquid separator, described gas-liquid
The working solution port of export of separator connects with the working solution entrance point of described working solution cooler, the work of described working solution cooler
Make the liquid port of export to connect with the working solution entrance point of described water ring vacuum pump.
In this utility model optional embodiment, the working solution entrance point of described working solution cooler is all provided with the port of export
Being equipped with thermometer, described thermometer is for detecting the heat transfer effect of working solution cooler.
In this utility model optional embodiment, it is provided with between described water ring vacuum pump and described working solution cooler
Temperature sensor.
In this utility model optional embodiment, described thermal power plant pumped vacuum systems also includes that liquidometer is with automatic
Water replanishing device, described liquidometer is installed on described gas-liquid separator, and described automatic water-replenishing device is positioned at described gas-liquid separator
Water pipe, described liquidometer is for detecting the liquid level of liquid in described gas-liquid separator and controlling described automatic water-replenishing device and enter
Row moisturizing.
In this utility model optional embodiment, connect between described entrance condenser with described one-level Roots vaccum pump
There is the pressure transmitter for detecting described one-level Roots vaccum pump inlet vacuum.
In this utility model optional embodiment, only it is provided with between described aftercooler and described water ring vacuum pump
Return valve.
A kind of thermal power plant vacuum pumping pump group, described thermal power plant vacuum pumping pump group includes frame and thermal power plant
Pumped vacuum systems, described thermal power plant pumped vacuum systems is installed on described frame.
In this embodiment, thermal power plant pumped vacuum systems is connected with frame so that pumped vacuum systems is fixed,
Form vacuum pumping pump group.
Compared with prior art, the beneficial effects of the utility model are: a kind of thermal power plant that this utility model provides
Pumped vacuum systems and pump group, inlet porting condensation in this pump group pipeline before condenser expellant gas enters Roots vaccum pump
Device, carries out condensation process to the gas entering Roots vaccum pump, reduces the temperature of gas, reduces volume flow, expands Roots's water
Ring vacuum pump group, in the range of application in thermal power generation vacuum system field, uses two-stage series connection air-cooled roots vacuum pump, it is possible to enter
One step reduces the end vacuum of pump group, thus improves the economy of Turbo-generator Set.This vacuum pumping pump group simple in construction, equipment
Taking up room little, energy consumption is low, and vacuum is improved effect and become apparent from.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, will use required in embodiment below
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiment of the present utility model, the most should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other relevant accompanying drawings according to these accompanying drawings.
Fig. 1 is the system diagram of the thermal power plant pumped vacuum systems of this utility model first embodiment；
Fig. 2 is the structural representation of the thermal power plant vacuum pumping pump group of this utility model the second embodiment.
Labelling in figure particularly as follows:
Entrance condenser 100, air inlet 101, discharge outlet 102, Pneumatic butterfly valve 110, pressure transmitter 120, one-level Roots
Vacuum pump 210, interstage cooler 211, two grades of Roots vaccum pumps 220, aftercooler 300, water ring vacuum pump 400, gas-liquid is divided
From device 500, liquidometer 510, overflow pipe 520, working solution cooler 600, thermometer 610, temperature sensor 620, water pipe
700, automatic water-replenishing device 710, moisturizing bypass valve 720, sewage draining exit 730, cooling water pipeline 740, condensate line 750, frame
800。
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of this utility model rather than whole embodiments.Generally described in the accompanying drawing herein and
The assembly of this utility model embodiment illustrated can be arranged with various different configurations and design.
Therefore, below the detailed description of the embodiment of the present utility model provided in the accompanying drawings is not intended to limit requirement
The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in this utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of this utility model protection.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " is arranged "
Should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion.For the ordinary skill in the art, can understand that above-mentioned term is in this utility model with concrete condition
Concrete meaning.
First embodiment
Refer to Fig. 1, the present embodiment provides a kind of thermal power plant pumped vacuum systems, including entrance condenser 100, one-level
Roots vaccum pump 210,211, two grades of Roots vaccum pumps 220 of interstage cooler, aftercooler 300, water ring vacuum pump 400 and gas
Liquid/gas separator 500.
Entrance condenser 100 is connected by connecting tube with the air inlet pipe of one-level Roots vaccum pump 210, one-level Roots vaccum pump
The exhaustor of 210 is connected by connecting tube with the inlet end of interstage cooler 211, the exhaust end of interstage cooler 211 and two grades
The air inlet pipe of Roots vaccum pump 220 is connected by connecting tube, the exhaustor of two grades of Roots vaccum pumps 220 and aftercooler 300
Inlet end connected by connecting tube, the inlet end of the exhaust end of aftercooler 300 and water ring vacuum pump 400 passes through connecting tube
Connection, the outlet side of water ring vacuum pump 400 is connected by connecting tube with gas-liquid separator 500.
The effect of condenser is: gas or steam are converted into liquid.In the present embodiment, the effect of entrance condenser 100
Being that the gas from condenser extraction enters entrance condenser 100 through air inlet 101, gas is condensed by entrance condenser 100
Process, make the temperature of gas reduce, meanwhile, water is formed in the congealed into fractional condensation in gas, get rid of through discharge outlet 102, so that
Non-condensable gas and a small amount of water vapour is comprised only in the gas that entrance condenser 100 processed.
Roots vaccum pump (being called for short: lobe pump) refers to the pump lobed rotor built with two rightabout synchronous rotaries, turns
Between son, there is slight gap between rotor and pump housing endophragm and non-touching a kind of positive displacement vacuum pump.Roots vaccum pump is by pump chamber
Interior a pair lobed rotor synchronizes, the pushing effect of reverse rotation carrys out mobile gas and realizes the vacuum pump bled.Roots vaccum pump
Producing heat due to conveying and compressed gas, these heats must reach housing from rotor and distribute.But under low pressure, gas
Conduction and convection current performance extreme difference to heat, the heat causing rotor to absorb is difficult to shed, and causes temperature of rotor to be always higher than housing
Temperature.Due to the thermal expansion of rotor, make between rotor and rotor, gap between rotor and pump case is reduced, the highest at pressure reduction especially
In the case of, it is particularly acute, even causes rotor stuck, make pump damage.Roots vaccum pump has drains that gas ability is strong, efficiency is high
Etc. advantage, but the pressure reduction that its shortcoming is subject to little (being usually no more than 6KPa).Therefore, Roots vaccum pump is to entering Roots vacuum
The gas of pump has strict requirements, and the temperature of the gas i.e. entered is low, the vacuum of gas wants high and steam amount is few.
In the present embodiment, before Roots vaccum pump, add entrance condenser 100 so that the gas entering Roots vaccum pump is mostly
Dry air, only a small amount of steam, the temperature of gas is low and vacuum is high.
In the present embodiment, Roots vaccum pump uses two groups of Roots vaccum pumps, the one-level Roots vacuum being respectively interconnected
Pump 210 and two grades of Roots vaccum pumps 220.The air inlet pipe of one-level Roots vaccum pump 210 is with entrance condenser 100 by connecting tube even
Logical, the exhaustor of two grades of Roots vaccum pumps 220 is connected by connecting tube with aftercooler 300, one-level Roots vaccum pump 210 and
Connected by interstage cooler 211 between two grades of Roots vaccum pumps 220.Interstage cooler 211 can cool down one-level Roots vacuum
Pump 210 effluent air so that enter the temperature of gas of two grades of Roots vaccum pumps 220 relative to one-level Roots vaccum pump 210
The temperature of effluent air is low, so that the suction capactity of two grades of Roots vaccum pumps 220 strengthens.Interstage cooler 211 condenses
Condensed water flow into condensate line 750 discharge through discharge outlet 102.
As the alternative of the present embodiment, can be communicated with between entrance condenser 100 and one-level Roots vaccum pump 210
Pressure transmitter 120.The effect of pressure transmitter 120 is by the pressure (i.e. vacuum) of gas in pipeline as electronic signals
It is sent to external control devices so that the vacuum of gas in operator's signal piping.When vacuum height in pipeline, say
Gas after bright entrance condenser 100 processes meets the requirement entering one-level Roots vaccum pump 210；When the vacuum in pipeline
Time low, illustrate that the gas after entrance condenser 100 process does not meets the requirement entering one-level Roots vaccum pump 210, need to be to pipe
Gas in road is isolated, and stops gas to enter one-level Roots vaccum pump 210.
As the alternative of the present embodiment, can be communicated with between entrance condenser 100 and one-level Roots vaccum pump 210
Pneumatic butterfly valve 110.The effect of Pneumatic butterfly valve 110 is the gas that isolation enters Roots's water-ring vacuum system, i.e. stops in pipeline
Gas enters one-level Roots vaccum pump 210.The startup of Pneumatic butterfly valve 110 is provided with setting value, when the vacuum of gas in pipeline
When reaching setting value, external control devices controls Pneumatic butterfly valve 110 and starts, and Pneumatic butterfly valve 110 is opened, at entrance condenser 100
The gas managed enters one-level Roots vaccum pump 210 through Pneumatic butterfly valve 110.Meanwhile, break down when other equipment in pipeline
When causing the gas in pipeline to occur abnormal, external control devices controls Pneumatic butterfly valve 110 and closes, Pneumatic butterfly valve 110 isolated tube
Gas in road enters one-level Roots vaccum pump 210.In pipeline, the vacuum of gas is at entrance condenser 100 and by connection
Pressure transmitter 120 detection between level Roots vaccum pump 210, Pneumatic butterfly valve 110 is communicated in entrance condenser 100 and pressure
Between transmitter 120.
In the present embodiment, gas, after the supercharging of two grades of Roots vaccum pumps 220, enters aftercooler 300.Final stage cools down
The effect of device 300 is two grades of Roots vaccum pump 220 expellant gas of cooling, reduces the temperature of gas.Aftercooler 300 ensures
Gas in pipeline has high vacuum and temperature is low, and condensed water is formed in the congealed into fractional condensation in gas, and gas enters water ring
After vacuum pump 400, meet the working condition of water ring vacuum pump 400.Between two grades of Roots vaccum pumps 220 and water ring vacuum pump 400
Add aftercooler 300 and reduce volume flow, reduce heat of vaporization energy, make the merit of the water ring vacuum pump 400 of next stage
Rate is greatly improved, and is improved the inlet pressure of water ring vacuum pump 400 by two grades of Roots vaccum pumps 220, effectively avoids water ring true
The cavitation of empty pump 400.As the alternative of the present embodiment, the gas tube between aftercooler 300 and water ring vacuum pump 400
Road is provided with check-valves 310, and gas can only flow to water ring vacuum pump 400 from aftercooler 300.Aftercooler 300 condenses
The condensed water that condenses with interstage cooler 211 of condensed water mix, a part flows to water ring vacuum pump 400, and another part is through cold
Condensate line 750 is discharged from discharge outlet 102.The condensate line 750 that aftercooler 300 connects with water ring vacuum pump 400 sets
Being equipped with check-valves, the condensate line 750 between aftercooler 300 and entrance condenser 100 is provided with check-valves.
Water ring vacuum pump 400 be the change by pump chamber to realize air-breathing, compression and aerofluxus, belong to variable-capacity vacuum
Pump.Gas is compressed after entering water ring vacuum pump 400, and when the pressure of gas is more than drain pressure, gas compressed is from row
Gas end is discharged, and during the continuously running of pump, water ring vacuum pump 400 constantly carries out air-breathing, compression, exhaust process,
Thus reach the purpose of continuous air extraction.The effect of water ring vacuum pump 400 is to press interstage cooler 300 expellant gas
Contracting.In the present embodiment, water ring vacuum pump 400 is arranged on the inlet end of gas-liquid separator 500, it is ensured that enter gas-liquid separator
The gas of 500 has high vacuum.
Saturated gas is in cooling or pressure process, and a part of condensable gas component can form droplet with gas
Flowing.The effect of gas-liquid separator 500 is to process the gas containing a small amount of lime set, it is achieved the recovery of lime set or gas phase purifying.
Owing to gas is different from the density of liquid, liquid is when flowing with the gases, and liquid can be affected by gravity, produces one
Downward speed, and gas is still towards the flowing of original direction, say, that liquid has in gravitational field with gas and separates
Tendency, downward liquid is attached on wall be gathered together discharged by drain pipe.In the present embodiment, gas-liquid separator 500
The exhaust end of water ring vacuum pump 400 it is communicated in by connecting tube, after gas enters gas-liquid separator 500, congealing in gas
Condensed water is formed in fractional condensation, through the condensation-water drain entrance condensate line 750 of gas-liquid separator 500, with aftercooler 300
The condensed water of condensate line 750 converges discharges through discharge outlet 102；Non-in gas is congealed into and point arranges through air vent with gas
Go out.In the present embodiment, the drain pipe of gas-liquid separator 500 includes blow-off pipe, condensate draining pipe and working solution drain pipe, gas-liquid
Condensate line 750 between separator 500 and entrance condenser 100 is provided with check-valves, and condensed water can only be by gas-liquid separation
Device 500 flows into entrance condenser 100.
Owing to needing working solution as working media in water ring vacuum pump 400 work process, water ring vacuum pump 400 is to work
The temperature requirement of liquid is higher, and the working solution temperature that gas-liquid separator 500 is discharged is higher, is unsatisfactory for water ring vacuum pump 400 to work
Make the requirement of liquid, so, the working solution that gas-liquid separator 500 is discharged need to could enter water ring vacuum pump after supercooling processes
400.As the alternative of the present embodiment, working solution can be provided with between water ring vacuum pump 400 and gas-liquid separator 500 cold
But device 600.Working solution cooler 600, water ring vacuum pump 400 and gas-liquid separator 500 collectively constitute working solution cycle subsystem:
The outlet side of water ring vacuum pump 400 is connected by connecting tube with the inlet end of gas-liquid separator 500, the work of gas-liquid separator 500
Make the liquid port of export to connect with the working solution entrance point of working solution cooler 600, the working solution port of export of working solution cooler 600 with
The working solution entrance point connection of water ring vacuum pump 400, i.e. working solution flows out from gas-liquid separator 500, enters working solution cooling
Device 600, at the cooling effect borehole cooling of working solution cooler 600, then through pipeline enter water ring vacuum pump 400, working solution with
Gas flows into gas-liquid separator 500, forms working solution circulation line.
Working solution entrance point and the working solution port of export of working solution cooler 600 are provided with thermometer 610, for work
The temperature of working solution in personnel on site's signal piping, thus detect the heat transfer effect of working solution cooler 600.When working solution cools down
When the working solution temperature difference of the import and export of device 600 is less than design load, working solution cooler 600 Heat exchanger is described.
The working solution entrance point of water ring vacuum pump 400 is provided with temperature sensor 620, and temperature sensor 620 will be for managing
In road, the temperature of working solution sends external control devices as electronic signals to.Temperature sensor 620 is provided with two and makes a reservation for
Value (predetermined value 1 and predetermined value 2), when working solution temperature reaches predetermined value 1, early warning signal is fed back in temperature sensor 620；Work as work
When liquid temp reaches predetermined value 2, temperature sensor 620 feedback alarm signal, the i.e. temperature of working solution are too high, it is impossible to meet water
The demand of ring vacuum pump 400.
In the present embodiment, thermal power plant pumped vacuum systems also includes liquidometer 510 and automatic water-replenishing device 710, liquid level
Meter 510 is installed on gas-liquid separator 500, and automatic water-replenishing device 710 is positioned at the water pipe 700 of gas-liquid separator 500.Liquidometer
510 for detecting the liquid level of liquid in gas-liquid separator 500, and the liquid level signal of liquid is fed back to external control devices；From
Dynamic water replanishing device 710 is for controlling the flow of water in water pipe 700.When in gas-liquid separator 500, the liquid level of liquid is low, liquid
Position meter 510 feeds back signal of water shortage to external control devices, and external control devices assigns moisturizing signal to automatic water-replenishing device 710,
Gas-liquid separator 500 is carried out moisturizing；When the liquid level height of liquid in gas-liquid separator 500, liquid can be through overflow pipe 520 row
Go out.As the optional mode of the present embodiment, water pipe 700 can be provided with moisturizing bypass valve 720.Work as automatic water-replenishing device
710 break down inefficacy after, staff can manually opened and close moisturizing bypass valve 720, mend for gas-liquid separator 500
Water.
In this enforcement, water ring vacuum pump 400 and gas-liquid separator 500 are additionally provided with blow-off pipe, water ring vacuum pump and gas-liquid
Sewage in separator is discharged through sewage draining exit 730.
The operation principle of the thermal power plant pumped vacuum systems that the present embodiment provides is: the incondensable gas that condenser is discharged
Being introduced into entrance condenser 100 before entering Roots vaccum pump, incondensable gas is carried out at condensation by entrance condenser 100
Reason, the congealed into fractional condensation in gas becomes liquid, and non-in gas is congealed into point and a small amount of steam is true through pipeline entrance Roots
Empty pump, Roots vaccum pump includes one-level Roots vaccum pump 210 and two grades of Roots vaccum pumps 220, one-level Roots vaccum pump 210 and two
It is provided with interstage cooler 211 so that gas was risen before entering water ring vacuum pump 400 between level Roots vaccum pump 220
Pressure and temperature are relatively low, be provided with aftercooler 300, enter gas further in the pipeline of the inlet end of water ring vacuum pump 400
Row cooling and boosting；Water ring vacuum pump 400, gas-liquid separator 500 and be arranged at water ring vacuum pump 400 and gas-liquid separator 500
Between working solution cooler 600 collectively constitute working solution cycle subsystem so that the working solution in water ring vacuum pump 400 is in
Relatively low temperature, improves the work efficiency of water ring vacuum pump 400, improves the vacuum of pumped vacuum systems, meanwhile, reduces power consumption.
Second embodiment
Refer to shown in Fig. 2, the present embodiment provides a kind of thermal power plant vacuum pumping pump group, including frame 800 and first
The thermal power plant pumped vacuum systems that embodiment provides.Entrance condenser 100 is fixed on frame 800 and one-level Roots vaccum pump
The air inlet pipe of 210 passes through pipeline communication, and aftercooler 300 is fixed on frame 800 and the exhaustor of two grades of Roots vaccum pumps 220
Connection, the outlet side of aftercooler 300 is connected by connecting tube with the inlet end of water ring vacuum pump 400, gas-liquid separator 500
It is fixed on frame 800 and the outlet side with water ring vacuum pump 400 was connected by communicating pipe.
The vacuum pumping pump group that the present embodiment provides, including cooling water pipeline 740 (with reference to shown in Fig. 1), due to work process
The heat that middle pump group produces normally works affecting pump group, and therefore, cooling water pipeline 740 to be provided with in pump group, for pump group
Interior formation is cooling water circulation, the temperature of working environment in reduction pump group.
In sum, a kind of thermal power plant pumped vacuum systems of this utility model offer and pump group, discharge at condenser
Gas enter inlet porting condenser 100 in the pipeline before Roots vaccum pump, the gas entering Roots vaccum pump is carried out cold
Solidifying process, reduces the temperature of gas, reduces volume flow, expand the range of application of Roots's water ring vacuum pump group；Use two-stage string
Connection air-cooled roots vacuum pump, can reduce the end vacuum of pump group further, thus improve the economy of Turbo-generator Set.This is taken out
Vacuum pump group simple in construction, equipment occupation space is little, and energy consumption is low, and vacuum is improved effect and become apparent from.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All in spirit of the present utility model and principle
Within, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (10)
1. a thermal power plant pumped vacuum systems, it is characterised in that include entrance condenser, one-level Roots vaccum pump, inter-stage
Cooler, two grades of Roots vaccum pumps, aftercooler, water ring vacuum pump and gas-liquid separator；
Described entrance condenser is connected by connecting tube with the air inlet pipe of described one-level Roots vaccum pump, described one-level Roots vacuum
The exhaustor of pump is connected by connecting tube with the inlet end of described interstage cooler, and the exhaust end of described interstage cooler is with described
The air inlet pipe of two grades of Roots vaccum pumps is connected by connecting tube, and the exhaustor of described two grades of Roots vaccum pumps cools down with described final stage
The inlet end of device is connected by connecting tube, and the inlet end of described water ring vacuum pump is with described aftercooler by connecting tube even
Logical, the outlet side of described water ring vacuum pump is connected by connecting tube with described gas-liquid separator.
Thermal power plant the most according to claim 1 pumped vacuum systems, it is characterised in that described thermal power plant evacuation
System also includes that condensate water discharging subsystem, described condensate water discharging subsystem include condensate line and discharge outlet, described in enter
Mouth condenser, institute's interstage cooler, described aftercooler and described gas-liquid separator pass through described with described discharge outlet respectively
Condensate line connects, and is communicated with condensate line between described aftercooler and described water ring vacuum pump.
Thermal power plant the most according to claim 1 pumped vacuum systems, it is characterised in that described entrance condenser is with described
It is provided with Pneumatic butterfly valve between one-level Roots vaccum pump.
Thermal power plant the most according to claim 1 pumped vacuum systems, it is characterised in that described water ring vacuum pump is with described
Being provided with working solution cooler between gas-liquid separator, described working solution cooler, described water ring vacuum pump and described gas-liquid are divided
Collectively constituting working solution cycle subsystem from device, the outlet side of described water ring vacuum pump leads to the inlet end of described gas-liquid separator
Crossing connecting tube connection, the working solution port of export of described gas-liquid separator connects with the working solution entrance point of described working solution cooler
Logical, the working solution port of export of described working solution cooler connects with the working solution entrance point of described water ring vacuum pump.
Thermal power plant the most according to claim 4 pumped vacuum systems, it is characterised in that the work of described working solution cooler
Making liquid entrance point and be provided with thermometer with the port of export, described thermometer is for detecting the heat transfer effect of working solution cooler.
Thermal power plant the most according to claim 4 pumped vacuum systems, it is characterised in that described water ring vacuum pump is with described
It is provided with temperature sensor between working solution cooler.
Thermal power plant the most according to claim 1 pumped vacuum systems, it is characterised in that described thermal power plant evacuation
System also includes that liquidometer and automatic water-replenishing device, described liquidometer are installed on described gas-liquid separator, and described automatic water supplement fills
Setting in the water pipe of described gas-liquid separator, the liquid level of described liquidometer liquid in detecting described gas-liquid separator and
Control described automatic water-replenishing device and carry out moisturizing.
Thermal power plant the most according to claim 1 pumped vacuum systems, it is characterised in that described entrance condenser is with described
The pressure transmitter for detecting described one-level Roots vaccum pump inlet vacuum it is communicated with between one-level Roots vaccum pump.
Thermal power plant the most according to claim 1 pumped vacuum systems, it is characterised in that described aftercooler is with described
Check-valves it is provided with between water ring vacuum pump.
10. a thermal power plant vacuum pumping pump group, it is characterised in that described thermal power plant vacuum pumping pump group include frame and
Thermal power plant pumped vacuum systems described in claim 1-9 any one, described thermal power plant pumped vacuum systems is installed on
Described frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620839384.0U CN205860805U (en) | 2016-08-04 | 2016-08-04 | A kind of thermal power plant pumped vacuum systems and pump group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620839384.0U CN205860805U (en) | 2016-08-04 | 2016-08-04 | A kind of thermal power plant pumped vacuum systems and pump group |
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| Publication Number | Publication Date |
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| CN205860805U true CN205860805U (en) | 2017-01-04 |
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| CN201620839384.0U Expired - Fee Related CN205860805U (en) | 2016-08-04 | 2016-08-04 | A kind of thermal power plant pumped vacuum systems and pump group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199419A (en) * | 2017-06-08 | 2017-09-26 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Full argon titanium alloy welding workshop vacuum system with exhaust gas absorption device |
| CN111852870A (en) * | 2020-05-06 | 2020-10-30 | 中国电力工程顾问集团中南电力设计院有限公司 | Coal-fired power plant vacuum pump multistage cooling water system and cooling method |
| CN115898517A (en) * | 2023-01-06 | 2023-04-04 | 淄博水环真空泵厂有限公司 | High negative pressure water conservation colliery gas drainage system |
-
2016
- 2016-08-04 CN CN201620839384.0U patent/CN205860805U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199419A (en) * | 2017-06-08 | 2017-09-26 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Full argon titanium alloy welding workshop vacuum system with exhaust gas absorption device |
| CN111852870A (en) * | 2020-05-06 | 2020-10-30 | 中国电力工程顾问集团中南电力设计院有限公司 | Coal-fired power plant vacuum pump multistage cooling water system and cooling method |
| CN115898517A (en) * | 2023-01-06 | 2023-04-04 | 淄博水环真空泵厂有限公司 | High negative pressure water conservation colliery gas drainage system |
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Granted publication date: 20170104 Termination date: 20180804 |