CN103244946B - For bootstrap system and the power plants generating electricity system of oxygen-eliminating device - Google Patents
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- CN103244946B CN103244946B CN201310175761.6A CN201310175761A CN103244946B CN 103244946 B CN103244946 B CN 103244946B CN 201310175761 A CN201310175761 A CN 201310175761A CN 103244946 B CN103244946 B CN 103244946B
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Abstract
The invention discloses a kind of bootstrap system for oxygen-eliminating device, comprise the first skirt and heater, wherein, the first skirt is used for being connected with the auxiliary pipe of gland steam exhauster continuous in oxygen-eliminating device; Above-mentioned auxiliary pipe is provided with fastens valve, and fastens the throttle orifice of valve near the exhaust port side of the supervisor of continuous gland steam exhauster, auxiliary pipe near the other end be responsible for; First skirt is arranged on throttle orifice and fastens between valve; Heater has thermal source working medium passage and by hot working fluid passage, thermal source working medium passage is connected with the first skirt by the second skirt.The above-mentioned bootstrap system for oxygen-eliminating device can make full use of the waste heat of oxygen-eliminating device exhaust steam, avoids energy dissipation, is beneficial to power plant's production and realizes energy-saving and emission-reduction.The invention also discloses a kind of power plants generating electricity system, it applies the above-mentioned bootstrap system for oxygen-eliminating device, the exhaust steam residual heat of oxygen-eliminating device can be avoided to waste, can realize energy-saving and emission-reduction.
Description
Technical field
The present invention relates to technical field of waste heat utilization, more particularly, relate to a kind of bootstrap system for oxygen-eliminating device, also relate to a kind of power plants generating electricity system.
Background technology
Power plant is for fixation means or the dynamics factory transporting electricity consumption by the original electric energy that can be converted into of certain form.For thermal power plant, refer to Fig. 1 and Fig. 2, power plants generating electricity system mainly comprises: boiler, oxygen-eliminating device, steam turbine, generator, feed water preheater and gland steam heater, wherein, condensate water first sends to feed water preheater after oxygen-eliminating device deoxygenation, boiler is delivered to after feed water preheater heating, and at boiler place by thermosetting vaporous water steam, water vapour arrives steam turbine and makes steam turbine drive electrical generators rotate with generating, water vapour is discharged by the cylinder of each pressure stage of steam turbine, wherein, water recovery in low pressure (LP) cylinder becomes water and discharges, the condensate water that low pressure (LP) cylinder is discharged need be back to oxygen-eliminating device after gland steam heater heating, to be reused for heat absorption and again to do work at steam turbine place.The thermal source of above-mentioned gland steam heater is the packing back-steam in power plants generating electricity system.
In above-mentioned power plants generating electricity system, oxygen-eliminating device comprises body and continuous gland steam exhauster, the supervisor that continuous gland steam exhauster comprises auxiliary pipe and is communicated with body, and wherein, the internal diameter of supervisor is larger than the internal diameter of auxiliary pipe, and supervisor is provided with multiple control valve; The two ends of auxiliary pipe are all communicated with above-mentioned supervisor, and which is provided with throttle orifice; Each control valve is all between two ends of auxiliary pipe.During work, the condensed water entering oxygen-eliminating device is heated, and in it, dissolved gases overflows, and after gas-liquid separation, directly entering air through above-mentioned continuous gland steam exhauster, (when oxygen-eliminating device just starts, capacity is comparatively large, and control valve is opened, and gas enters air by supervisor; After oxygen-eliminating device is stable, capacity is less, and control valve is closed, and gas enters air by " supervisor-auxiliary pipe-supervisor " circuit).But in above-mentioned oxygen-eliminating device, the not condensable gas overflowed in condensed water can carry a large amount of water vapour after gas-liquid separation, both are mixed to form exhaust steam, and with amount of heat in exhaust steam, energy dissipation after being directly disposed to air, can be caused, be unfavorable for that power plant realizes energy-saving and cost-reducing productive target.
In sum, how a kind of bootstrap system that can absorb the heat of the exhaust steam that oxygen-eliminating device is discharged is provided, to reach energy-saving and cost-reducing effect, and a kind of power plants generating electricity system applying above-mentioned bootstrap system how is provided to be those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of bootstrap system for oxygen-eliminating device, it can make full use of the exhaust steam residual heat of oxygen-eliminating device, avoids energy dissipation, is beneficial to power plant's production and realizes energy-saving and emission-reduction.The present invention also provides a kind of power plants generating electricity system, and it applies above-mentioned bootstrap system, the exhaust steam residual heat of oxygen-eliminating device can be avoided to waste, can realize energy-saving and emission-reduction.
For achieving the above object, the invention provides following technical scheme:
For a bootstrap system for oxygen-eliminating device, comprising:
For the first skirt be connected with the auxiliary pipe of gland steam exhauster continuous in described oxygen-eliminating device, described auxiliary pipe is provided with fastens valve, and described in fasten valve near the exhaust port side of the supervisor of described continuous gland steam exhauster, the throttle orifice of described auxiliary pipe near the other end of described supervisor; Described first skirt is arranged on described throttle orifice and describedly fastens between valve; With
There is thermal source working medium passage and the heater by hot working fluid passage; Described thermal source working medium passage is connected with described first skirt by the second skirt.
Preferably, in above-mentioned bootstrap system, described first skirt is 2, respectively with described in 2 groups of described oxygen-eliminating device continuously the described auxiliary pipe of gland steam exhauster be connected.
Preferably, in above-mentioned bootstrap system, the caliber of described second skirt is greater than the caliber of described first skirt.
Preferably, in above-mentioned bootstrap system, described first skirt is provided with the first valve.
Preferably, in above-mentioned bootstrap system, described second skirt is provided with the second valve.
A kind of power plants generating electricity system, comprise oxygen-eliminating device, also comprise the bootstrap system for described oxygen-eliminating device, described bootstrap system is the bootstrap system in technique scheme described in any one.
Preferably, in above-mentioned power plants generating electricity system, described heater is the gland steam heater of described power plants generating electricity system.
Preferably, in above-mentioned power plants generating electricity system, described second skirt is connected with described thermal source working medium passage by the packing back-steam pipeline of described power plants generating electricity system.
Preferably, in above-mentioned power plants generating electricity system, on described packing back-steam pipeline, the 3rd valve of close described gland steam heater is between described gland steam heater and described second skirt.
Bootstrap system for oxygen-eliminating device provided by the invention comprises the first skirt and heater, and wherein, the first skirt is used for being connected with the auxiliary pipe of gland steam exhauster continuous in oxygen-eliminating device; Above-mentioned auxiliary pipe is provided with fastens valve, and fastens the throttle orifice of valve near the exhaust port side of the supervisor of continuous gland steam exhauster, auxiliary pipe near the other end be responsible for; First skirt is arranged on throttle orifice and fastens between valve; Heater has thermal source working medium passage and by hot working fluid passage, thermal source working medium passage is connected with the first skirt by the second skirt.
During application, startup is completed at oxygen-eliminating device, after its exhaust steam discharge capacity is steady, valve is fastened in closedown, exhaust steam directly enters the first skirt through auxiliary pipe, the thermal source working medium passage of heater is entered again by the second skirt, and heating by the working medium in hot working fluid passage heater, and then realize exhaust steam residual heat utilization; Exhaust steam is via forming condensed water and not condensable gas after thermal source working medium passage, above-mentioned condensed water can be recycled, and to realize the utilization of exhaust steam working medium, above-mentioned incondensable gas directly enters air.
The above-mentioned bootstrap system for oxygen-eliminating device can make full use of the waste heat of oxygen-eliminating device exhaust steam, avoids energy dissipation, is beneficial to power plant's production and realizes energy-saving and emission-reduction.
Meanwhile, above-mentioned bootstrap system can make the working medium in exhaust steam be recycled utilization, achieves the effect of conservation.
Moreover the bootstrap system of above-mentioned oxygen-eliminating device avoids exhaust steam heat and enters air, is beneficial to environmental protect temperature.
The present invention also provides a kind of power plants generating electricity system, and it applies the above-mentioned bootstrap system for oxygen-eliminating device, the exhaust steam residual heat of oxygen-eliminating device can be avoided to waste, can realize energy-saving and emission-reduction.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of oxygen-eliminating device in prior art;
Fig. 2 is the structural representation of gland steam heater in existing power plants generating electricity system;
Fig. 3 is applied to the structural representation of power plants generating electricity system for the bootstrap system for oxygen-eliminating device that the embodiment of the present invention provides;
Wherein, in upper Fig. 3:
Oxygen-eliminating device 100; Supervisor 101; Auxiliary pipe 102; Throttle orifice 121; Fasten valve 122; First skirt 200; First valve 201; Second skirt 300; Second valve 301; Gland steam heater 400; Packing back-steam pipeline 501; 3rd valve 511.
Detailed description of the invention
The embodiment of the invention discloses a kind of bootstrap system for oxygen-eliminating device, it can make full use of the exhaust steam residual heat of oxygen-eliminating device, avoids waste heat to waste, achieves energy-saving and emission-reduction.The embodiment of the invention also discloses a kind of power plants generating electricity system, it applies above-mentioned bootstrap system, the exhaust steam residual heat of oxygen-eliminating device in system can be avoided to waste, can realize energy-saving and emission-reduction.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 3, the bootstrap system that the embodiment of the present invention provides is for oxygen-eliminating device 100.Oxygen-eliminating device comprises oxygen-eliminating device and comprises body and continuous gland steam exhauster, the supervisor 101 that continuous gland steam exhauster comprises auxiliary pipe 102 and is communicated with body, and wherein, the internal diameter of supervisor 101 is larger than the internal diameter of auxiliary pipe 102, and supervisor 101 is provided with multiple control valve; The two ends of auxiliary pipe 102 are all communicated with above-mentioned supervisor 101, and which is provided with throttle orifice 121; Each control valve is all between two ends of auxiliary pipe 102.During work, the condensed water entering oxygen-eliminating device 100 is heated, and in it, dissolved gases overflows, and after gas-liquid separation, directly entering air through above-mentioned continuous gland steam exhauster, (when oxygen-eliminating device 100 just starts, capacity is comparatively large, and control valve is opened, and gas enters air by being responsible for 101; After oxygen-eliminating device 100 is stable, capacity is less, and control valve is closed, and gas enters air by " the auxiliary pipe 102-of supervisor 101-is responsible for 101 " circuit).In above-mentioned oxygen-eliminating device, the not condensable gas overflowed in condensed water can carry a large amount of water vapour after gas-liquid separation, and both are mixed to form exhaust steam.
The above-mentioned bootstrap system for oxygen-eliminating device 100 comprises the first skirt 200 and heater, and wherein, the first skirt 200 is for being connected with the auxiliary pipe 102 of gland steam exhauster continuous in oxygen-eliminating device 100; Above-mentioned auxiliary pipe 102 is provided with fastens valve 122, and fastens the exhaust port side of valve 122 near the supervisor 101 of continuous gland steam exhauster, the other end (being namely responsible for 101 one end be connected with body) of the close supervisor 101 of throttle orifice 121; First skirt 200 is arranged on throttle orifice 121 and fastens between valve 122; Heater has thermal source working medium passage and by hot working fluid passage, thermal source working medium passage is connected with the first skirt 200 by the second skirt 300.
During application, startup is completed at oxygen-eliminating device 100, after its exhaust steam discharge capacity is steady, valve 122 is fastened in closedown, exhaust steam directly enters the first skirt 200 through auxiliary pipe 102, the thermal source working medium passage of heater is entered again by the second skirt 300, and heating by the working medium in hot working fluid passage heater, and then realize exhaust steam residual heat utilization; Exhaust steam is via forming condensed water and not condensable gas after thermal source working medium passage, above-mentioned condensed water can be recycled, and to realize the utilization of exhaust steam working medium, above-mentioned incondensable gas directly can enter air.
The above-mentioned bootstrap system for oxygen-eliminating device 100 can make full use of the waste heat of oxygen-eliminating device 100 exhaust steam, avoids energy dissipation, is beneficial to and realizes energy-saving and emission-reduction.Meanwhile, above-mentioned bootstrap system can make the working medium in exhaust steam be recycled utilization, achieves the effect of conservation.
Moreover the above-mentioned bootstrap system for oxygen-eliminating device 100 avoids heat and enters air, is beneficial to environmental protect temperature.
Concrete, in the bootstrap system that above-described embodiment provides, the first skirt 200 is 2, and is connected with the auxiliary pipe 102 of two groups of continuous gland steam exhausters of oxygen-eliminating device 100 respectively.First skirt 200 can also be set to 1,3 and 4 etc. according to the group number of gland steam exhauster continuous in oxygen-eliminating device 100, the quantity of the present embodiment to the first skirt 200 does not limit, but it need be identical with the quantity of continuous gland steam exhauster, to guarantee that the auxiliary pipe 102 often organizing continuous gland steam exhauster is all communicated with the second skirt 300 by the first skirt 200.
In the bootstrap system that above-described embodiment provides, the second skirt 300 is one.Because each first skirt 200 is all communicated with the second skirt 300, cause flow in the second skirt 300 comparatively large, thus smooth and easy in order to make exhaust steam circulate, and the caliber of above-mentioned second skirt 300 is set to the caliber being greater than the first skirt 200.
Conveniently control exhaust steam to flow to, in the bootstrap system that above-described embodiment provides, the first skirt 200 is provided with the first valve 201, second skirt 300 and is provided with the second valve 301.
The embodiment of the present invention also provides a kind of power plants generating electricity system, it is formed by the existing power plants generating electricity system reform, it comprises oxygen-eliminating device 100 and the bootstrap system for oxygen-eliminating device 100, wherein, and the bootstrap system for oxygen-eliminating device 100 that bootstrap system provides for above-described embodiment.Disclosed in the embodiment of the present invention, power plants generating electricity system applies the bootstrap system that above-described embodiment provides, and the exhaust steam residual heat of oxygen-eliminating device 100 can be avoided to waste, can realize energy-saving and emission-reduction.
Concrete, above-described embodiment provides in power plants generating electricity system, can be independent heater, can be used for adding the working medium such as hot cooling water for heater in the bootstrap system of oxygen-eliminating device 100, to heat to user's supplying hot water or for user.Preferably, specifically adopt the gland steam heater 400 of power plants generating electricity system for the heater in the bootstrap system of oxygen-eliminating device 100, to avoid increasing new heater, reduce reconstruction cost.
In above-mentioned power plants generating electricity system, the main heating source of gland steam heater 400 is packing back-steam, the thermal source working medium passage of gland steam heater 400 is connected with packing back-steam pipeline 501, second skirt 300 is directly connected on above-mentioned packing back-steam pipeline 501, to realize being connected with thermal source working medium passage by above-mentioned packing back-steam pipeline 501.
Position near gland steam heater 400 on packing back-steam pipeline 501 is provided with the 3rd valve 511, and the 3rd valve 511 is between gland steam heater 400 and the second skirt 300.
In the power plants generating electricity system that the present embodiment provides, condensate water first sends to feed water preheater after oxygen-eliminating device 100 deoxygenation, boiler is delivered to after feed water preheater heating, and at boiler place by thermosetting water vapour, water vapour arrives steam turbine and makes steam turbine drive electrical generators rotate with generating, water vapour is discharged by the cylinder of the different pressures level of steam turbine, wherein, the low pressure (LP) cylinder place water vapour of steam turbine forms condensate water and discharges, the condensate water at this place heats by the exhaust steam of oxygen-eliminating device 100 and the steam of packing back-steam pipeline 501 at gland steam heater 400 place simultaneously, after heating, this condensate water is back to oxygen-eliminating device 100, and be reused for heat absorption with again in steam turbine acting place.
In above-mentioned power plants generating electricity system, the exhaust steam of oxygen-eliminating device 100 forms condensed water and not condensable gas after gland steam heater 400 place's heat exchange, wherein condensable gas does not enter air under the effect of the air exhauster of gland steam heater 400, condensate return is for subsequent use to condenser hotwell place, the double back achieving energy and the working medium making oxygen-eliminating device 100 exhaust steam is received, and is beneficial to the production cost reducing power plant.
In addition, because gland steam heater 400 is introduced in oxygen-eliminating device 100 exhaust steam, the gas flow needing to enter air in gland steam heater 400 is caused to increase, namely the burden of the air exhauster of gland steam heater 400 is caused to strengthen, exerting oneself of air exhauster need be calculated during reconstruction and whether can meet emission request, for the oxygen-eliminating device 100 of 300MW unit, do not reclaim if its exhaust steam is 1.0-3.0t/h(, thermal loss reaches 589000-1938000KJ/h, amounting to mark coal is 20-65Kg/h), be 10% calculating according to incondensable gas content in exhaust steam, after reconstruction, the incondensable gas that the air exhauster of gland steam heater 400 is taken away increases 75-112m
3/ h, cause the rate of air sucked in required of air exhauster to increase 3.8-5.6%, in existing power plants generating electricity system, air exhauster exerts oneself as 2000m
3/ h, can meet transformation final vacuum demand.Surplus due to air exhauster in power plant all arranges comparatively large, and it generally can meet the exhaust demand after reconstruction, if the exhaust demand after calculating air exhauster and cannot meeting reconstruction, then needs to change larger air exhauster of exerting oneself.
The power plants generating electricity system that the embodiment of the present invention provides applies the bootstrap system for oxygen-eliminating device 100 that above-described embodiment provides, and also has other effect that above-described embodiment provides, does not repeat them here.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. for a bootstrap system for oxygen-eliminating device, it is characterized in that, comprising:
For the first skirt be connected with the auxiliary pipe of gland steam exhauster continuous in described oxygen-eliminating device, described auxiliary pipe is provided with fastens valve, and described in fasten valve near the exhaust port side of the supervisor of described continuous gland steam exhauster, the throttle orifice of described auxiliary pipe near the other end of described supervisor; Described first skirt is arranged on described throttle orifice and describedly fastens between valve; The two ends of described auxiliary pipe are communicated with described supervisor respectively; With
There is thermal source working medium passage and the heater by hot working fluid passage; Described thermal source working medium passage is connected with described first skirt by the second skirt.
2. bootstrap system according to claim 1, is characterized in that, described first skirt is 2, respectively with described in 2 groups of described oxygen-eliminating device continuously the described auxiliary pipe of gland steam exhauster be connected.
3. bootstrap system according to claim 2, is characterized in that, the caliber of described second skirt is greater than the caliber of described first skirt.
4. the bootstrap system according to claim 1-3 any one, is characterized in that, described first skirt is provided with the first valve.
5. bootstrap system according to claim 4, is characterized in that, described second skirt is provided with the second valve.
6. a power plants generating electricity system, comprises oxygen-eliminating device, it is characterized in that, also comprises the bootstrap system for described oxygen-eliminating device, and described bootstrap system is the bootstrap system described in claim 1-5 any one.
7. power plants generating electricity system according to claim 6, is characterized in that, described heater is the gland steam heater of described power plants generating electricity system.
8. power plants generating electricity system according to claim 7, is characterized in that, described second skirt is connected with described thermal source working medium passage by the packing back-steam pipeline of described power plants generating electricity system.
9. power plants generating electricity system according to claim 8, is characterized in that, on described packing back-steam pipeline, the 3rd valve of close described gland steam heater is between described gland steam heater and described second skirt.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104791762A (en) * | 2015-03-25 | 2015-07-22 | 上海大众祥源动力供应有限公司 | Automatic exhaust device for deaerator |
| CN108507367A (en) * | 2018-04-04 | 2018-09-07 | 山西省工业设备安装集团有限公司 | A kind of exhaust steam of electric power plant reuse means |
| CN109028021A (en) * | 2018-06-29 | 2018-12-18 | 鞍钢集团工程技术有限公司 | A kind of oxygen-eliminating device exhaust energy recyclable device and method |
| CN108800100A (en) * | 2018-07-02 | 2018-11-13 | 东莞埃欧热能技术有限公司 | Compact device is recycled in efficient steam exhaust |
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