CN204923937U - Power plant condenser vacuum improves device and thermal power system - Google Patents
Power plant condenser vacuum improves device and thermal power system Download PDFInfo
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- CN204923937U CN204923937U CN201520453931.7U CN201520453931U CN204923937U CN 204923937 U CN204923937 U CN 204923937U CN 201520453931 U CN201520453931 U CN 201520453931U CN 204923937 U CN204923937 U CN 204923937U
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Abstract
The utility model relates to a power plant condenser vacuum improves device and thermal power system, wherein, the vacuum is improved the device and is included lobe pump, condenser, water ring vacuum pump, vapour and liquid separator, cooler, a condenser tube and the 2nd condenser tube and the 3rd condenser tube, the air inlet of condenser links to each other with the gas outlet of lobe pump, water ring vacuum pump's air inlet links to each other with the gas outlet of condenser, vapour and liquid separator's air inlet links to each other with water ring vacuum pump's gas outlet, and the heat side high temperature interface of cooler links to each other with vapour and liquid separator's backward flow mouth, and the heat side low temperature interface of cooler links to each other with water ring vacuum pump's water inlet, a condenser tube links to each other with the lobe pump, the 2nd condenser tube links to each other with the condenser, and the 3rd condenser tube links to each other with the cooler. According to the utility model provides a power plant condenser vacuum improves device and thermal power system can reach the partial pressure that reduces the dry air, promotes condenser vacuum degree's purpose.
Description
Technical field
The utility model relates to thermal power generating technology field, and particularly a kind of condenser of power plant vacuum improves device and thermal power generation system.
Background technology
Thermal power generation, is utilized the heat energy produced when solid, liquid, the gas fuel combustions such as coal, oil, natural gas, is converted to a kind of generation mode of electric energy by generation power device.Divide by prime mover, mainly contain steam turbine power generation, gas turbine power generation, diesel power generation (other internal combustion engine generate outputs are very little).In steam turbine power generation mode, its basic procedure first sends fuel to boiler, sends into air simultaneously, and boiler injects through chemically treated feedwater, the heat energy utilizing fuel combustion to release makes water become high temperature, high steam, and driving steam turbine rotates work done and drive electrical generators generates electricity.
And condenser is connected in steam turbine gas outlet for cooling the device condensing into water to high steam.Condenser needs higher vacuum, and vacuum is higher, and generating efficiency is higher.At present, in thermal power generation, the general water ring vacuum pump that adopts vacuumizes condenser.
But current Problems existing is that condenser vacuum has room for promotion, but the vacuum of condenser is caused to promote further due to the restriction of the final vacuum of water ring vacuum pump.Its main cause is: in condenser, gas pressure is made up of steam partial pressure and leakage dry air dividing potential drop, based on steam partial pressure.Because condensation water quantity is very large, water ring vacuum pump rate of air sucked in required size can not affect the dividing potential drop of steam, and steam partial pressure determines primarily of cooling water temperature.Condenser dry air dividing potential drop is determined by vavuum pump rate of air sucked in required, because the mass flow that dry air leaks is basicly stable, and amount is little, if water ring vacuum pump rate of air sucked in required is large, dry air dividing potential drop is just low, if water ring vacuum pump rate of air sucked in required is little, dry air dividing potential drop is just high.Because condenser runs the end vacuum of vacuum close to water ring vacuum pump, now, the rate of air sucked in required of water ring vacuum pump significantly declines, and dry air dividing potential drop can not reduce further.Because during end vacuum point close to water ring vacuum pump, even if open several water ring vacuum pumps also there is no obvious effect more.So prior art cannot improve vacuum in condenser.
Utility model content
Main purpose of the present utility model is, for above-mentioned deficiency of the prior art, provides a kind of condenser of power plant vacuum to improve device and thermal power generation system.
For achieving the above object, on the one hand, the condenser of power plant vacuum that the utility model provides improves device, comprising:
Lobe pump, the air entry of described lobe pump is for connecting the bleeding point of the condenser of thermal power generation system;
Condenser, the air inlet of described condenser is connected with the gas outlet of described lobe pump;
Water ring vacuum pump, the air inlet of described water ring vacuum pump is connected with the gas outlet of described condenser;
Gas-liquid separator, the air inlet of described gas-liquid separator is connected with the gas outlet of described water ring vacuum pump, and the liquid outlet of described gas-liquid separator connects a blow-off pipe, and the exhaust outlet of described gas-liquid separator connects a blast pipe;
Cooler, the hot side high temperature interface of described cooler is connected with the refluxing opening of described gas-liquid separator, and the hot side low temperature interface of described cooler is connected with the water inlet of described water ring vacuum pump;
First cooling water pipe, described first cooling water pipe is connected with described lobe pump, in order to cool described lobe pump;
Second cooling water pipe, described second cooling water pipe is connected with described condenser, in order to provide the cooling water needed for described condenser;
3rd cooling water pipe, described 3rd cooling water pipe is connected with described cooler, in order to provide the cooling water needed for described cooler.
Preferably, described first cooling water pipe comprises the first water inlet pipe and the first outlet pipe, and described first water inlet pipe is connected with the cooling water inlet of described lobe pump, and described first outlet pipe is connected with the coolant outlet of described lobe pump;
Described second cooling water pipe comprises the second water inlet pipe and the second outlet pipe, and described second water inlet pipe is connected with the cooling water inlet of described condenser, and described second outlet pipe is connected with the coolant outlet of described condenser;
Described 3rd cooling water pipe comprises the 3rd water inlet pipe and the 3rd outlet pipe, and described 3rd water inlet pipe is connected with the cooling water inlet of described cooler, and described 3rd outlet pipe is connected with the coolant outlet of described cooler;
Described first water inlet pipe, the second water inlet pipe and the 3rd water inlet pipe are connected to a cooling water supply pipe, and described first outlet pipe, the second outlet pipe and the 3rd outlet pipe are connected to a cooling water discharge pipe.
Preferably, also comprise water deflector, the air inlet of described water deflector is connected with the circulation gas port of described condenser, and the gas outlet of described water deflector is connected with the cold gas entrance of described lobe pump, described lobe pump cold gas outlet be connected with the gas returning port of described water deflector.
Preferably, described gas-liquid separator connects the filling pipe that is described gas-liquid separator moisturizing.
Preferably, the discharge outlet of described water ring vacuum pump is connected with described blow-off pipe.
Preferably, between the gas outlet of described condenser and the air inlet of described water ring vacuum pump, be provided with check valve, the conducting on the air inlet direction leading to described water ring vacuum pump along the gas outlet of described condenser of described check valve.
On the other hand, the thermal power generation system that the utility model provides, comprising:
Boiler;
Steam turbine, the air inlet of described steam turbine is connected with the gas outlet of described boiler;
Condenser, described condenser is connected with the gas outlet of described steam turbine;
Circulating pump, the water inlet of described circulating pump is connected with the delivery port of described condenser, and the delivery port of described circulating pump is connected with the water inlet of described boiler;
Condenser of power plant vacuum as above improves device, and the air entry of the lobe pump that described condenser of power plant vacuum improves in device is connected with the bleeding point of described condenser;
Water ring vacuum pump group, described water ring vacuum pump group is connected with the bleeding point of described condenser.
Preferably, described water ring vacuum pump group comprises the first water ring vacuum pump group and the second water ring vacuum pump group, and described first water ring vacuum pump group and the second water ring vacuum pump group are all connected to the bleeding point of described condenser.
Again on the one hand, the condenser of power plant vacuum raising method that the utility model provides, is applied to system described above, comprises:
Start described water ring vacuum pump group, described condenser is vacuumized, make the vacuum of condenser reach the final vacuum that can reach of described water ring vacuum pump pump group;
Stop described water ring vacuum pump group, start described condenser of power plant vacuum and improve device, utilize the lobe pump in described condenser of power plant vacuum raising device and water ring vacuum pump to vacuumize further described condenser, the vacuum of described condenser is improved further.
Device and thermal power generation system is improved according to the condenser of power plant vacuum that the utility model provides, can first be vacuumized condenser by water ring vacuum pump group, set up vacuum, the vacuum of condenser is made to reach the final vacuum that can reach of water ring vacuum pump pump group, now, stop water ring vacuum pump group, start condenser of power plant vacuum and improve device, the lobe pump in this device and water ring vacuum pump is utilized to vacuumize further condenser, so, under the prerequisite that power does not promote, the final vacuum of the combination of lobe pump and water ring vacuum pump is higher than traditional water ring vacuum pump a lot, during high vacuum, rate of air sucked in required is more much larger than water ring vacuum pump, the dividing potential drop reducing dry air can be reached, promote the object of condenser vacuum.
Accompanying drawing explanation
Fig. 1 is that the utility model embodiment condenser of power plant vacuum improves apparatus structure schematic diagram;
Fig. 2 is the structural representation of the utility model embodiment thermal power generation system;
Fig. 3 is the flow chart of the utility model embodiment condenser of power plant vacuum raising method.
Reference numeral:
Lobe pump 10;
Pneumatic butterfly valve 11;
Condenser 20;
Check valve 21;
Water ring vacuum pump 30;
4th ball valve 31;
Gas-liquid separator 40;
Blow-off pipe 41;
Blast pipe 42;
Filling pipe 43;
6th ball valve 44;
Magnetic valve 45;
5th ball valve 46;
Overflow pipe 47;
Cooler 50;
3rd ball valve 51;
3rd water inlet pipe 52;
3rd outlet pipe 53;
First water inlet pipe 60;
First outlet pipe 61;
First ball valve 62;
Second water inlet pipe 70;
Second outlet pipe 71;
Second ball valve 72;
Cooling water supply pipe 80;
Cooling water discharge pipe 81;
Filter 82;
Water deflector 90.
Condenser of power plant vacuum improves device 100;
Boiler 200;
Steam turbine 300;
Condenser 400;
Circulating pump 500;
First water ring vacuum pump group 600;
Second water ring vacuum pump group 610.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
With reference to shown in Fig. 1, the utility model embodiment provides a kind of condenser of power plant vacuum and improves device 100, comprises lobe pump 10, condenser 20, water ring vacuum pump 30, gas-liquid separator 40, cooler 50, first cooling water pipe and the second cooling water pipe and the 3rd cooling water pipe.
The air entry of lobe pump 10 is for connecting the bleeding point of the condenser of thermal power generation system, air in suction condenser and the mist of uncondensed vapor, such as, in Fig. 1 example shown, the air entry of lobe pump 10 is connected to the bleeding point of condenser by a Pneumatic butterfly valve 11.The air inlet of condenser 20 is connected with the gas outlet of lobe pump 10, and that is, lobe pump 10 is discharged the compression of suction mist, and the mist of discharge carries out condensation by condenser 20, forms water and low-temperature mixed gas.
The air inlet of water ring vacuum pump 30 is connected with the gas outlet of condenser 20.For the low-temperature mixed gas that suction cooler 20 is discharged.The air inlet of gas-liquid separator 40 is connected with the gas outlet of water ring vacuum pump 30, and the liquid outlet of gas-liquid separator 40 connects a blow-off pipe 41, and the exhaust outlet of gas-liquid separator 40 connects a blast pipe 42.That is, water ring vacuum pump 30 is discharged the low-temperature mixed gas compression sucked, the mist of discharging carries out gas-liquid separation by gas-liquid separator 40, form gas and water, water can be discharged by blow-off pipe 41, also can flow into cooler 50 from refluxing opening, gas can be discharged by blast pipe 42.
The hot side high temperature interface of cooler 50 is connected with the refluxing opening of gas-liquid separator 40, and the hot side low temperature interface of cooler 50 is connected with the water inlet of described water ring vacuum pump 30.
That is, cooler 50 can cool the water that refluxing opening in gas-liquid separator 40 flows out, and cooled water can be delivered in water ring vacuum pump 30.Such as, starting to start this condenser of power plant vacuum raising device 100, water ring vacuum pump 30 needs a certain amount of working water, and now, the water that cooler 50 can be utilized to cool is delivered to water ring vacuum pump 30, so that water ring vacuum pump 30 starts work.
It should be noted that, adopt the water in cooler 50 pairs of gas-liquid separators 40 to cool rear supply water ring vacuum pump 30, on the one hand, working water can be provided for water ring vacuum pump 30; On the other hand, the water provided due to this cooler 50 is cooling water, so, when this cooling water works as working water in water ring pump, also serve the cooling effect to water ring pump, guarantee that water ring vacuum pump can steady operation.
First cooling water pipe is connected with described lobe pump 10, in order to cool lobe pump 10.That is, because when lobe pump 10 runs, temperature can raise, therefore, water quench lobe pump 10 is provided by the first cooling water pipe.Second cooling water pipe is connected with condenser 20, in order to provide the cooling water needed for condenser 20.This second cooling water pipe, for providing the cooling water of condenser 20, carries out heat exchange by cooling water and the mist passing into condenser 20, carries out the condensation realizing mist.3rd cooling water pipe is connected with described cooler, in order to provide the cooling water needed for described cooler.
Specific works flow process is as follows: lobe pump 10 aspirates the mist of air and the uncondensed gas reached in the condenser of certain vacuum degree, undertaken compressing rear discharge by lobe pump 10, the mist of discharging is expelled to condenser 20, condensation is carried out, forming section water and low-temperature mixed gas by condenser 20; Then, the part water that condensation is formed and low-temperature mixed gas are aspirated by water ring vacuum pump 30, and be expelled to gas-liquid separator 40 after compression, after carrying out gas-liquid separation by gas-liquid separator 40, form gas and water, gas fraction is discharged by blast pipe 42, and water cools rear supply water ring vacuum pump 30 by cooler 50 recycles.
It should be noted that, in the utility model, due to lobe pump 10 run under HTHP difference time, very easily break down, substantially can not reliable and stablely run, that is, lobe pump 10 is when vacuumizing condenser, need to avoid HTHP difference ring border, otherwise cannot realize realizing vacuumizing to condenser.Therefore, in the utility model, on the one hand, the mist of discharging by arranging condenser 20 pairs of lobe pumps 10 carries out condensation, on the other hand, by arranging the first cooling water pipe, lobe pump 10 is cooled itself, therefore, can pressure reduction be reduced, avoid lobe pump 10 high temperature, High Pressure Difference to run, reduce lobe pump 10 power, guarantee lobe pump 10 stable operation, again on the one hand, cool and then supply water ring vacuum pump 30 by the water in cooler 50 pairs of gas-liquid separators 40 and use, guarantee the operation that water ring vacuum pump 30 is reliable and stable.
Device 100 is improved according to the condenser of power plant vacuum that the utility model provides, lobe pump 10 is combined with water ring vacuum pump 30 and forms water ring lobe pump 10 groups, in a particular application, can first be vacuumized condenser by water ring vacuum pump group original in thermal power generation system, set up vacuum, the vacuum of condenser is made to reach the final vacuum that can reach of water ring vacuum pump pump group, now, stop water ring vacuum pump group, start condenser of power plant vacuum and improve device 100, the lobe pump 10 in this device and water ring vacuum pump 30 pairs of condensers are utilized to vacuumize further, so, under the prerequisite that power does not promote, the final vacuum of the combination of lobe pump 10 and water ring vacuum pump 30 is higher than traditional water ring vacuum pump group a lot, during high vacuum, rate of air sucked in required is more much larger than original water ring vacuum pump group, the dividing potential drop reducing dry air can be reached, promote the object of condenser vacuum.
In a specific embodiment of the present utility model, the first cooling water pipe comprises the first water inlet pipe 60 and the first outlet pipe 61, first water inlet pipe 60 is connected with the cooling water inlet of lobe pump 10, and the first outlet pipe 61 is connected with the coolant outlet of lobe pump 10.So, the cooling water that first water inlet pipe 60 passes into can enter lobe pump 10 by the cooling water inlet of lobe pump 10, after lobe pump 10, the heat absorbing lobe pump 10 realizes cooling lobe pump 10, the cooling water absorbed after heat is flowed into the first outlet pipe 61 by the coolant outlet of lobe pump 10, then is discharged by the first outlet pipe 61.
Second cooling water pipe comprises the second water inlet pipe 70 and the second outlet pipe 71, second water inlet pipe 70 is connected with the cooling water inlet of described condenser 20, and the second outlet pipe 71 is connected with the coolant outlet of described condenser 20.So, the cooling water that second water inlet pipe 70 passes into enters condenser 20 by the cooling water inlet of condenser 20 and after carrying out heat exchange with the HTHP mist in condenser 20, be expelled to the second outlet pipe 71 by the coolant outlet of condenser 20, then discharged by the second outlet pipe 71.
3rd cooling water pipe comprises the 3rd water inlet pipe 52 and the 3rd outlet pipe the 53, three water inlet pipe 52 is connected with the cooling water inlet of described cooler 50, and the 3rd outlet pipe 53 is connected with the coolant outlet of described cooler 50.So, the cooling water passed into of the 3rd water inlet pipe 52 to be entered in cooler 50 by the cooling water inlet of cooler 50 and after carrying out heat exchange with the hot water in cooler 50, be expelled to the 3rd outlet pipe 53 by the coolant outlet of cooler 50, then discharged by the 3rd outlet pipe 53.
Further, the first water inlet pipe 60, second water inlet pipe 70 and the 3rd water inlet pipe 52 are connected to cooling water supply pipe 80, first outlet pipe 61, second outlet pipe 71 and the 3rd outlet pipe is connected to a cooling water discharge pipe 81.That is, first water inlet pipe 60, second water inlet pipe 70 and the 3rd water inlet pipe 53 provide cooling water by same cooling water supply pipe 80, and meanwhile, the first outlet pipe 61, second outlet pipe 71 and the 3rd outlet pipe 53 can be connected to by cooling water discharge pipe 81, so, simple and compact for structure.
More favorably, the first ball valve 62 can be set at the first water inlet pipe 60, the second water inlet pipe 70 arranges the second ball valve 72, so, the break-make of the first water inlet pipe 60 and the second water inlet pipe 70 can be controlled respectively by the first ball valve 62 and the second ball valve 72.
In addition, in an example of utility model, cooling water supply pipe 80 can also arrange filter 82, can filter with to cooling water, guarantee the pure free from admixture of cooling water, avoid causing damage to condenser 20, lobe pump 10 and cooler 50.
More specifically, in an example of the present utility model, the 3rd ball valve 51 can be set between the cooling water inlet of cooler 50 and cooling water supply pipe 80, by the supply of the 3rd ball valve 51 controlled cooling model water.
In embodiments more of the present utility model, also comprise water deflector 90, the air inlet of this water deflector 90 is connected with the circulation gas port of condenser 20, and the gas outlet of water deflector 90 is connected with the cold gas entrance of lobe pump 10, lobe pump 10 cold gas outlet be connected with the gas returning port of water deflector 90.
That is, water deflector 90 is that the water that the cooling for stopping in condenser 20 is formed afterwards enters to lobe pump 10, avoid lobe pump 10 by liquid hammer, simultaneously, this water deflector 90 can allow the cooled refrigerating gas of condenser 20 to enter in lobe pump 10 by the cold gas entrance on lobe pump 10, the heat absorbing lobe pump 10 after this refrigerating gas enters lobe pump 10 cools lobe pump 10, and being back to water deflector 90 gas returning port from the cold gas outlet discharge of lobe pump 10, the air inlet finally by water deflector 90 flows back to and flow to condenser 20.So, except the first cooling water pipe cools lobe pump 10, the refrigerating gas through be entered lobe pump 10 by water deflector 90 after can also being discharged by condenser 20 is cooled lobe pump 10.By this, lobe pump 10 temperature and pressure reduction can be reduced further, avoid lobe pump 10 high temperature, High Pressure Difference to run, reduce lobe pump 10 power, guarantee lobe pump 10 more stable operation.
In an embodiment of the present utility model, gas-liquid separator 40 connects the filling pipe 43 that is the moisturizing of described gas-liquid separator 40.So, when the liquid level in gas-liquid separator 40 is lower than minimum liquid level, by filling pipe 43 to gas-liquid separator 40 supplementing water, so, after can guaranteeing have enough water can be cooled by cooler 50 in gas-liquid separator 40, water ring vacuum pump 30 can be supplied to.Guarantee that whole device uses reliably convenient.
More specifically, such as, in example described in Fig. 1, filling pipe 43 is provided with magnetic valve 45 and the 6th ball valve 44, is controlled the break-make of filling pipe 43 by magnetic valve 45 and the 6th ball valve 44, and then realize replenishment control.
In addition, in an example of the present utility model, gas-liquid separator 40 is also provided with connection one overflow pipe 47, overflow pipe 47 is connected to above-mentioned blow-off pipe 41, when the liquid level in gas-liquid separator 40 is higher than the highest liquid level, blow-off pipe 41 can be expelled to by overflow pipe 47, then be discharged by blow-off pipe 41.
Further, in an example of utility model, the discharge outlet of water ring vacuum pump 30 is connected with blow-off pipe 41.So, such as, when water ring vacuum pump 30 keeps in repair, by blow-off pipe 41, the water in water ring vacuum pump 30 can be discharged.
In a concrete example of the present utility model, the discharge outlet of water ring vacuum pump 30 can be connected to blow-off pipe 41 by one the 4th ball valve 31, and the liquid outlet of gas-liquid separator 40 is connected to blow-off pipe 41 by one the 5th ball valve 46.So, the break-make of the discharge outlet of water ring vacuum pump 30 and the liquid outlet of gas-liquid separator 40 can be controlled respectively by the 4th ball valve 31 and the 5th ball valve 46.
More favorably, in an embodiment of the present utility model, check valve 21 is provided with, the conducting on the air inlet direction leading to described water ring vacuum pump 30 along the gas outlet of described condenser 20 of described check valve 21 between the gas outlet of condenser 20 and the air inlet of described water ring vacuum pump 30.
So, the water that condenser 20 is discharged and low-temperature mixed gas can only enter to water ring vacuum pump 30 by check valve 21, and water in water ring vacuum pump 30 or gas can not reverse flow to condenser 20, by this, can play and prevent the problem such as gas or liquid refluence, guarantee that condenser 20 and lobe pump 10 normally work.
Prove through test, the condenser of power plant vacuum that the utility model provides improves the vacuum that the vacuum of condenser can be improved 0.05KPa to 1KPa by device 100.According to power plant's operating experience, 300MW power plant, vacuum often improves 1KPa, and every KWH generated energy saves 2.5g coal, and economic benefit is huge, just can reclaim the investment that this condenser of power plant vacuum improves device 100 in some months.
In sum, condenser of power plant vacuum of the present utility model improves device 100, lobe pump 10 is combined with water ring vacuum pump 30 and forms water ring lobe pump group, the final vacuum of the combination of lobe pump 10 and water ring vacuum pump 30 is higher than traditional water ring vacuum pump group a lot, during high vacuum, rate of air sucked in required is more much larger than original water ring vacuum pump group, the dividing potential drop reducing dry air can be reached, promote the object of condenser vacuum.
With reference to shown in Fig. 2, the utility model embodiment provides a kind of thermal power generation system, comprises boiler 200, steam turbine 300, condenser 400, circulating pump 500, condenser of power plant vacuum as described in above-described embodiment improve device 100 and water ring vacuum pump group.
The air inlet of steam turbine 300 is connected with the gas outlet of boiler 200, and condenser 400 is connected with the gas outlet of steam turbine 300.The water inlet of circulating pump 500 is connected with the delivery port of condenser 400, and the delivery port of circulating pump 500 is connected with the water inlet of boiler 200.Boiler 200, steam turbine 300, condenser 400, circulating pump 500 form steam-return line, concrete, the high-temperature steam that boiler 200 produces, and pushing turbine 300, is generated electricity by steam turbine 300 drive electrical generators.And made the vapor stream of merit through condenser 400 water-cooled, become the saturation water close to normal temperature, saturation water is delivered to boiler 200 through circulating pump 500 and again utilizes.
It should be noted that, other function elements can also be comprised in steam-return line, such as between boiler 200 and steam turbine 300, can also heater, high pressure cylinder etc. be set, between condenser 400 and boiler 200, low-pressure heater, oxygen-eliminating device, high-pressure heater etc. can also be set, steam-return line is prior art known in the art, and no further details to be given herein.
The air entry of the lobe pump 10 that condenser of power plant vacuum improves in device 100 is connected with the bleeding point of described condenser 400.Water ring vacuum pump group is connected with the bleeding point of described condenser 400.Condenser of power plant vacuum raising device 100 and water ring vacuum pump group are all for vacuumizing condenser 400.
General, the power of water ring vacuum pump group is comparatively large, and the power that condenser of power plant vacuum improves lobe pump 10 and water ring vacuum pump 30 in device 100 is less.
That is, thermal power generation system of the present utility model, remains the water ring vacuum pump group in traditional thermal power generation system, meanwhile, has set up condenser of power plant vacuum on this basis and has improved device 100.Wherein, water ring vacuum pump group sets up vacuum for vacuumizing condenser 400, and make the vacuum of condenser 400 close to the final vacuum of water ring vacuum pump group.And condenser of power plant vacuum raising device 100 is for when reaching the final vacuum of water ring vacuum pump group, when namely utilizing water ring vacuum pump group not improve the vacuum of condenser 400 again, utilize this condenser of power plant vacuum to improve device 100 pairs of condensers 400 to continue to vacuumize, to improve the vacuum of condenser 400.
In an embodiment of the present utility model, water ring vacuum pump group comprises the bleeding point that the first water ring vacuum pump group 600 and the second water ring vacuum pump group 610, first water ring vacuum pump group 600 and the second water ring vacuum pump group 610 are all connected to described condenser 400.That is to say and by two groups of water ring vacuum pump groups, condenser 400 to be vacuumized, set up vacuum, so, (traditional method of operation is can to reduce the power of separate unit water ring vacuum pump group, incipient half an hour, two water ring pumps run, and set up vacuum rapidly, stop a pump afterwards, only run a vavuum pump).
With reference to shown in Fig. 3, condenser of power plant vacuum raising method, is applied to system described above, that is to say and utilizes system described above to improve the method for vacuum, comprise the following steps:
S10, start described water ring vacuum pump group, described condenser 400 is vacuumized, makes the vacuum of condenser 400 reach the final vacuum that can reach of described water ring vacuum pump pump group;
S20, stop described water ring vacuum pump group, start described condenser of power plant vacuum and improve device 100, utilize the lobe pump 10 in described condenser of power plant vacuum raising device 100 and water ring vacuum pump 30 to vacuumize further described condenser 400, the vacuum of described condenser 400 is improved further.
According to the condenser of power plant vacuum raising method that the utility model provides, can first be vacuumized condenser 400 by water ring vacuum pump group, set up vacuum, the vacuum of condenser 400 is made to reach the final vacuum that can reach of water ring vacuum pump group, now, stop water ring vacuum pump group, start condenser of power plant vacuum and improve device 100, the lobe pump 10 in this device and water ring vacuum pump 30 pairs of condensers 400 are utilized to vacuumize further, so, under the prerequisite that power does not promote, the final vacuum of the combination of lobe pump 10 and water ring vacuum pump 30 is higher than traditional water vacuum ring pump group a lot, during high vacuum, rate of air sucked in required is more much larger than original water ring vacuum pump group, the dividing potential drop reducing dry air can be reached, promote the object of condenser 400 vacuum.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.
Claims (8)
1. condenser of power plant vacuum improves a device, it is characterized in that, comprising:
Lobe pump, the air entry of described lobe pump is for connecting the bleeding point of the condenser of thermal power generation system;
Condenser, the air inlet of described condenser is connected with the gas outlet of described lobe pump;
Water ring vacuum pump, the air inlet of described water ring vacuum pump is connected with the gas outlet of described condenser;
Gas-liquid separator, the air inlet of described gas-liquid separator is connected with the gas outlet of described water ring vacuum pump, and the liquid outlet of described gas-liquid separator connects a blow-off pipe, and the exhaust outlet of described gas-liquid separator connects a blast pipe;
Cooler, the hot side high temperature interface of described cooler is connected with the refluxing opening of described gas-liquid separator, and the hot side low temperature interface of described cooler is connected with the water inlet of described water ring vacuum pump;
First cooling water pipe, described first cooling water pipe is connected with described lobe pump, in order to cool described lobe pump;
Second cooling water pipe, described second cooling water pipe is connected with described condenser, in order to provide the cooling water needed for described condenser;
3rd cooling water pipe, described 3rd cooling water pipe is connected with described cooler, in order to provide the cooling water needed for described cooler.
2. condenser of power plant vacuum according to claim 1 improves device, it is characterized in that, described first cooling water pipe comprises the first water inlet pipe and the first outlet pipe, described first water inlet pipe is connected with the cooling water inlet of described lobe pump, and described first outlet pipe is connected with the coolant outlet of described lobe pump;
Described second cooling water pipe comprises the second water inlet pipe and the second outlet pipe, and described second water inlet pipe is connected with the cooling water inlet of described condenser, and described second outlet pipe is connected with the coolant outlet of described condenser;
Described 3rd cooling water pipe comprises the 3rd water inlet pipe and the 3rd outlet pipe, and described 3rd water inlet pipe is connected with the cooling water inlet of described cooler, and described 3rd outlet pipe is connected with the coolant outlet of described cooler;
Described first water inlet pipe, the second water inlet pipe and the 3rd water inlet pipe are connected to a cooling water supply pipe, and described first outlet pipe, the second outlet pipe and the 3rd outlet pipe are connected to a cooling water discharge pipe.
3. condenser of power plant vacuum according to claim 1 improves device, it is characterized in that, also comprise water deflector, the air inlet of described water deflector is connected with the circulation gas port of described condenser, the gas outlet of described water deflector is connected with the cold gas entrance of described lobe pump, described lobe pump cold gas outlet be connected with the gas returning port of described water deflector.
4. condenser of power plant vacuum according to claim 1 improves device, it is characterized in that, described gas-liquid separator connects the filling pipe that is described gas-liquid separator moisturizing.
5. condenser of power plant vacuum according to claim 1 improves device, and it is characterized in that, the discharge outlet of described water ring vacuum pump is connected with described blow-off pipe.
6. condenser of power plant vacuum according to claim 1 improves device, it is characterized in that, check valve is provided with, the conducting on the air inlet direction leading to described water ring vacuum pump along the gas outlet of described condenser of described check valve between the gas outlet of described condenser and the air inlet of described water ring vacuum pump.
7. a thermal power generation system, is characterized in that, comprising:
Boiler;
Steam turbine, the air inlet of described steam turbine is connected with the gas outlet of described boiler;
Condenser, described condenser is connected with the gas outlet of described steam turbine;
Circulating pump, the water inlet of described circulating pump is connected with the delivery port of described condenser, and the delivery port of described circulating pump is connected with the water inlet of described boiler;
Condenser of power plant vacuum according to any one of claim 1 to 6 improves device, and the air entry of the lobe pump that described condenser of power plant vacuum improves in device is connected with the bleeding point of described condenser;
Water ring vacuum pump group, described water ring vacuum pump group is connected with the bleeding point of described condenser.
8. thermal power generation system according to claim 7, it is characterized in that, described water ring vacuum pump group comprises the first water ring vacuum pump group and the second water ring vacuum pump group, and described first water ring vacuum pump group and the second water ring vacuum pump group are all connected to the bleeding point of described condenser.
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| CN201520453931.7U CN204923937U (en) | 2015-06-29 | 2015-06-29 | Power plant condenser vacuum improves device and thermal power system |
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| CN201520453931.7U CN204923937U (en) | 2015-06-29 | 2015-06-29 | Power plant condenser vacuum improves device and thermal power system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949541A (en) * | 2015-06-29 | 2015-09-30 | 深圳市成德机械有限公司 | Device and method for improving vacuum of power plant condenser and thermal power generation system |
| CN107062932A (en) * | 2017-03-30 | 2017-08-18 | 中国神华能源股份有限公司 | Steam cools down retracting device |
| CN109028999A (en) * | 2018-07-19 | 2018-12-18 | 国家能源投资集团有限责任公司 | Boiler circuit |
| CN110307734A (en) * | 2019-05-29 | 2019-10-08 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of vacuum pump working solution circulating system |
| WO2020082292A1 (en) * | 2018-10-25 | 2020-04-30 | Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd | Separator system |
| GB2615836A (en) * | 2022-02-17 | 2023-08-23 | Edwards Tech Vacuum Engineering Qingdao Company Limited | System and method for cleaning a liquid ring pump system |
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2015
- 2015-06-29 CN CN201520453931.7U patent/CN204923937U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949541A (en) * | 2015-06-29 | 2015-09-30 | 深圳市成德机械有限公司 | Device and method for improving vacuum of power plant condenser and thermal power generation system |
| CN107062932A (en) * | 2017-03-30 | 2017-08-18 | 中国神华能源股份有限公司 | Steam cools down retracting device |
| CN109028999A (en) * | 2018-07-19 | 2018-12-18 | 国家能源投资集团有限责任公司 | Boiler circuit |
| WO2020082292A1 (en) * | 2018-10-25 | 2020-04-30 | Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd | Separator system |
| CN110307734A (en) * | 2019-05-29 | 2019-10-08 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of vacuum pump working solution circulating system |
| GB2615836A (en) * | 2022-02-17 | 2023-08-23 | Edwards Tech Vacuum Engineering Qingdao Company Limited | System and method for cleaning a liquid ring pump system |
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