CN205261697U - Steam -operating and electronic heat supply network circulating water pump united operation's heat supply network system - Google Patents
Steam -operating and electronic heat supply network circulating water pump united operation's heat supply network system Download PDFInfo
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- CN205261697U CN205261697U CN201520930240.1U CN201520930240U CN205261697U CN 205261697 U CN205261697 U CN 205261697U CN 201520930240 U CN201520930240 U CN 201520930240U CN 205261697 U CN205261697 U CN 205261697U
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Abstract
The utility model provides a steam -operating and electronic heat supply network circulating water pump united operation's heat supply network system belongs to the heat supplying technology field. The heat supply network system includes steam -operating heat supply network circulating water pump, electronic heat supply network circulating water pump, conventionality draw gas heating network heater, little steam turbine import steam diverter valve and little steam turbine, little steam turbine import steam diverter valve is connected to a plurality of steam turbine steam extraction port, and little steam turbine is connected to little steam turbine import steam diverter valve in order receiving steam, and little steam turbine still is connected to steam -operating heat supply network circulating water pump, steam -operating heat supply network circulating water pump and electronic heat supply network circulating water pump all are connected to the conventionality heating network heater that draws gas, the conventionality is drawn gas heating network heater and is connected to a plurality of steam turbine steam extraction port regard as the heat source to supply water to the heat supply network that the heat supply network return water heats in order to form the outer net in order to draw gas the steam turbine. This scheme has been solved power consumption coal expenses rate height and has easily been damaged heat supply network equipment and pipeline scheduling problem, has the energy of reduction use amount and lightens a great deal of advantages such as harm to equipment and pipeline.
Description
Technical field
The utility model belongs to heat supply process field, relates in particular to the heat supply network of a kind of steam-operating and electronic circulation pump of heat-supply network cooperationSystem.
Background technology
Steam-operating circulation pump of heat-supply network is a kind of employing steam drive industry small turbine and drives heat supply network recirculated water by industrial small turbineThe equipment of pump acting, electronic circulation pump of heat-supply network is a kind of equipment that utilizes motor to drive circulation pump of heat-supply network acting. Domestic at presentThe conventional heat supply network circulation configuration of power plant is electronic circulation pump of heat-supply network, by many electronic circulation pump of heat-supply network parallel runnings.System schematic as shown in Figure 1. Heat supply network backwater 10 is sent into heat exchangers for district heating 1 and is entered after boosting by electronic circulation pump of heat-supply network 2Row heating, the thermal source of heat exchangers for district heating 1 is provided by the bleeder steam of top, and for example, 12 represent that connecing No. 1 steam turbine heating takes outSteam ports, 13 represent to connect No. 2 steam turbine heating extraction opening, the heat supply network backwater heating through heat exchangers for district heating 1 forms heat supply network and supplies water 11With external heat supply.
In existing heating system, heat supply network circulation all adopts electronic circulation pump of heat-supply network, power plant's power consumption rate and net coal consumption rateRelatively high, economical operation index is advanced not; And electronic pumps for hot water supply net is the in the situation that of unexpected dead electricity, heat supply network recirculated waterWater capacity in pipe network is very huge, the water kinetic energy forming due to inertia or the physical features discrepancy in elevation of water flow is very large, in power plantEquipment and circulating water pipeline can produce larger impact, and water hammer easily occurs, and may cause the infringement of equipment or pipeline, makeOne-tenth accident.
Utility model content
The purpose of this utility model is to provide a kind of heat network system that two kinds of heat-supplying modes are combined, and overcomes in prior artThe problems referred to above that exist.
For realizing above object, the utility model proposes the heat network system of a kind of steam-operating and electronic circulation pump of heat-supply network cooperation,Described heat network system comprises steam-operating circulation pump of heat-supply network, electronic circulation pump of heat-supply network, routine draw gas heat exchangers for district heating, small turbineInlet steam transfer valve and small turbine; Small turbine inlet steam transfer valve is connected to multiple turbine bleed points, described littleSteam turbine inlet steam transfer valve is used for switching between multiple turbine bleed points, thereby by multiple turbine bleed pointsThe steam that provides introduce in small turbine, small turbine is connected to small turbine inlet steam transfer valve to receive steam,Small turbine is also connected to steam-operating circulation pump of heat-supply network to drive the acting of steam-operating circulation pump of heat-supply network, described steam-operating circulation pump of heat-supply networkFor being boosted and be all connected to routine, heat supply network backwater draws gas heat exchangers for district heating with after boosting with electronic circulation pump of heat-supply networkHeat supply network backwater offer the routine heat exchangers for district heating that draws gas, the described routine heat exchangers for district heating that draws gas is connected to described multiple steam turbine and takes outSteam ports supplies water to the heat supply network of outer net so that extracted steam from turbine is heated to form to heat supply network backwater as thermal source.
According to an aspect of the present utility model, described heat network system also comprise steam-operating circulation pump of heat-supply network heat exchangers for district heating for steam discharge,Small turbine outlet isolating valve, and steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating and turbine bleed point isolating valve; WhereinDescribed steam-operating circulation pump of heat-supply network and electronic circulation pump of heat-supply network are all connected to steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating,Described steam-operating circulation pump of heat-supply network steam discharge boosts to process steam-operating circulation pump of heat-supply network and electronic circulation pump of heat-supply network with heat exchangers for district heatingAfter heat supply network backwater heat to produce heat supply network and supply water to outer net heat supply; Described small turbine exports isolating valve, by small turbineBe connected to steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating, described steam-operating circulation pump of heat-supply network steam discharge is also logical with heat exchangers for district heatingCross steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating and turbine bleed point isolating valve, and be connected to described multiple extracted steam from turbineMouthful.
According to an aspect of the present utility model, when small turbine inlet steam transfer valve is opened, small turbine outlet isolating valve, is beatenOpen and when steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating and turbine bleed point isolating valve, are closed small turbine exhaustFor the thermal source of heat exchangers for district heating for steam-operating circulation pump of heat-supply network steam discharge; When small turbine inlet steam transfer valve cuts out, small turbineWhen outlet isolating valve, is closed and steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating and turbine bleed point isolating valve, open,Extracted steam from turbine is the thermal source of steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating.
According to an aspect of the present utility model, the number of described steam-operating circulation pump of heat-supply network is one or more.
According to an aspect of the present utility model, the number of described electronic circulation pump of heat-supply network is one or more.
As can be seen here, the heat network system that this programme proposes can be realized the lower station service power consumption rate of power plant, reduces power plant's net coal consumption rate,Optimize power plant's economical operation index, and can alleviate because hot net water after the unexpected dead electricity of electronic circulation pump of heat-supply network is beaten heat supply network equipmentWith the infringement of pipeline, improve the security of heat supply network circulation, reduce the generation of Power Plant Accident
Brief description of the drawings
Fig. 1 is the schematic diagram of the heat network system of prior art;
Fig. 2 is according to the heat network system that steam-operating and electronic circulation pump of heat-supply network are combined of an embodiment of the utility modelSchematic diagram.
Detailed description of the invention
The following stated is better embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
The novel heat network system the utility model proposes is described referring to Fig. 2. Described heat network system has been introduced steam-operating heat supply network and has been followedRing water pump 3 boosts to heat supply network backwater 10 together with electronic circulation pump of heat-supply network 2, enters to enter follow-up heat exchangers for district heatingRow adds thermosetting heat supply network and supplies water 11.
Particularly, referring to Fig. 2, according to an aspect, described heat network system comprises that steam-operating circulation pump of heat-supply network 3, electronic heat supply network followRing water pump 2, routine draw gas heat exchangers for district heating 1, small turbine inlet steam transfer valve 7 and small turbine 8. Wherein, little vapourTurbine inlet steam transfer valve 7 is connected to multiple turbine bleed points, has illustrated two in Fig. 2, is respectively No. 1 steam turbine and adoptsWarm 12 and No. 2 steam turbine heating extraction openings 13 of extraction opening, actual can be multiple, described small turbine inlet steam transfer valve 7For switching between multiple turbine bleed points, thereby one in the multiple turbine bleed points steam providing is introducedIn small turbine 8. Small turbine 8 is connected to small turbine inlet steam transfer valve 7 to receive steam. Small turbine 8 also connectsBe connected to steam-operating circulation pump of heat-supply network 3 to drive steam-operating circulation pump of heat-supply network 3 to do work. Described steam-operating circulation pump of heat-supply network 3 and electronicCirculation pump of heat-supply network 2 is all connected to the routine heat exchangers for district heating 1 that draws gas, and the described routine heat exchangers for district heating 1 that draws gas is connected to described manyIndividual turbine bleed point using by extracted steam from turbine as thermal source.
According to above-mentioned path, heat supply network backwater 10 is through electronic circulation pump of heat-supply network 2 and steam-operating circulation pump of heat-supply network 3 cooperation litersAfter pressure, send into the routine heat exchangers for district heating 1 that draws gas and heat, the heat supply network after heating supplies water for to outer net, steam-operating heat supply network recirculated waterThe driving vapour source of pump 3 is provided by turbine bleed point, and for guaranteeing small turbine security of operation, multiple turbine bleed points are such as figure1, No. 2 unit shown in 2 draws gas all can be for it provides steam, by small turbine inlet steam transfer valve 7 to both one ofSwitch. Like this, introduce steam-operating circulation pump of heat-supply network 3 and supporting other equipment to solve the electricity consumption existing in prior artHigh and easily damage the problem of heat supply network e-quipment and pipe by coal rate. ,, in the time of the unexpected dead electricity of power plant, electronic circulation pump of heat-supply network 2 is prominentSo stop transport, heat supply network recirculated water still circulates in pipe network, by steam-operating circulation pump of heat-supply network 3, heat supply network recirculated water is boosted, and bandMoving heat supply network recirculated water flows, thereby reduces heat supply network recirculated water because inertial flow or the physical features discrepancy in elevation of water form water hammer, improves and suppliesThe security of hot system.
According on the other hand, described heat network system also comprises steam-operating circulation pump of heat-supply network heat exchangers for district heating 4, small turbine for steam dischargeHeat exchangers for district heating and turbine bleed point isolating valve, 5 for outlet isolating valve, 6 and steam-operating circulation pump of heat-supply network steam discharge. Described steam-operatingCirculation pump of heat-supply network 3 and electronic circulation pump of heat-supply network 2 are all connected to steam-operating circulation pump of heat-supply network heat exchangers for district heating 4 for steam discharge, instituteState steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating 4 to process steam-operating circulation pump of heat-supply network 3 and electronic circulation pump of heat-supply network 2Heat supply network backwater after boosting heats to produce 11 pairs of outer net heat supplies of heat supply network water supply. Described small turbine 8 goes out by small turbineMouthful isolating valve, 6 is connected to steam-operating circulation pump of heat-supply network heat exchangers for district heating 4 steam discharge for, and described steam-operating circulation pump of heat-supply network steam discharge is with warmDescribed in net heater 4 is also connected to heat exchangers for district heating and turbine bleed point isolating valve, 5 by steam-operating circulation pump of heat-supply network steam dischargeMultiple turbine bleed points. Wherein, when small turbine inlet steam transfer valve 7 is opened, small turbine outlet isolating valve, 6 opens,When steam-operating circulation pump of heat-supply network steam discharge is closed with heat exchangers for district heating and turbine bleed point isolating valve, 5, small turbine exhaust is steam heatThe thermal source of heat exchangers for district heating 4 for net water circulating pump steam discharge, that is to say, in the time that small turbine 8 runs well, by small turbineExhaust is as thermal source. When small turbine inlet steam transfer valve 7 cuts out, small turbine outlet isolating valve, 6 is closed and steam-operatingWhen circulation pump of heat-supply network steam discharge is opened with heat exchangers for district heating and turbine bleed point isolating valve, 5, extracted steam from turbine is the circulation of steam-operating heat supply networkThe thermal source of heat exchangers for district heating 4 for water pump steam discharge, that is to say, if small turbine 8 accident, so not with small turbine 8Exhaust is as thermal source but using extracted steam from turbine as thermal source.
As can be seen here, if small turbine accident cannot normally be moved, close small turbine inlet steam transfer valve 7 and little steamerMachine outlet isolating valve, 6, opens the heat exchangers for district heating heating steam of drawing gas of steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating and routineIsolating valve, 5, steam-operating circulation pump of heat-supply network steam discharge switches to steam turbine with the heating steam of heat exchangers for district heating 4 by small turbine steam dischargeDraw gas, continue heating heat supply network recirculated water, ensure the thermal safety that supplies of heat supply network recirculated water. And in the time that small turbine is normally worked,Steam-operating circulation pump of heat-supply network steam discharge is used for heating heat supply network recirculated water, realizes the utilization of energy ladder, improves utilization ratio
The steam-operating pumps for hot water supply net of configuration some can reduce Station Service Electrical-Energy rate, reduces power plant's net coal consumption rate. Drive heatThe steam discharge of net water circulating pump small turbine, can also pass through heat exchangers for district heating Heating Cyclic water, makes full use of heat, improves the energyUtilization ratio. Suddenly dead electricity can not impact steam-operating circulation pump of heat-supply network, can not cause heat supply network to produce water and beat phenomenon. SupplyingIn hot system, suitable outfit steam-operating circulation pump of heat-supply network number of units, can reduce heat network system water and beat the effect to e-quipment and pipe,Improve the security of heating system. If but all adopted steam-operating circulation pump of heat-supply network, the amount of drawing gas needing would be more again, steam pipeRoad is thicker, arranges more difficult. The steam-operating circulation pump of heat-supply network that this programme proposes and the heat of electronic circulation pump of heat-supply network cooperationNet system, in the situation that Heating Load is lower in the winter time, when heat supply network quantity of circulating water is less, adopts the circulation of steam-operating heat supply network as far as possibleWater pump operation, performance steam-operating circulation pump of heat-supply network reduces station service power consumption rate, reduces the advantage of net coal consumption rate, when thermic load rises,When heat supply network quantity of circulating water is more, adopt the mode of steam-operating circulation pump of heat-supply network and electronic circulation pump of heat-supply network cooperation, system fortuneRow is more flexible, and the security of system operation is higher.
It should be noted that detailed description of the invention and application that the utility model proposes are only the object of explanation, conduct is not to thisThe restriction of utility model protection scope, those skilled in the art can modify to meet to detailed description of the invention of the present utility modelActual needs.
Claims (5)
1. a heat network system for steam-operating and electronic circulation pump of heat-supply network cooperation, is characterized in that:
Described heat network system comprises steam-operating circulation pump of heat-supply network, electronic circulation pump of heat-supply network, routine draw gas heat exchangers for district heating, little vapourTurbine inlet steam transfer valve and small turbine; Wherein
Small turbine inlet steam transfer valve is connected to multiple turbine bleed points, and described small turbine inlet steam transfer valve is used forBetween multiple turbine bleed points, switch, thereby the steam providing in multiple turbine bleed points is introduced to little vapourIn turbine, small turbine is connected to small turbine inlet steam transfer valve to receive steam, and small turbine is also connected to steam-operating heat supply networkWater circulating pump is to drive the acting of steam-operating circulation pump of heat-supply network, and described steam-operating circulation pump of heat-supply network and electronic circulation pump of heat-supply network are for rightHeat supply network backwater boosts and is all connected to the routine heat exchangers for district heating that draws gas and draws gas so that the heat supply network backwater after boosting is offered to routineHeat exchangers for district heating, described routine draw gas heat exchangers for district heating be connected to described multiple turbine bleed point using by extracted steam from turbine as heatThe heat supply network water supply to outer net is heated to form to heat supply network backwater in source.
2. heat network system according to claim 1, is characterized in that:
Described heat network system also comprises steam-operating circulation pump of heat-supply network heat exchangers for district heating for steam discharge, small turbine outlet isolating valve, and vapourMoving circulation pump of heat-supply network steam discharge heat exchangers for district heating and turbine bleed point isolating valve; Wherein
Described steam-operating circulation pump of heat-supply network and electronic circulation pump of heat-supply network are all connected to steam-operating circulation pump of heat-supply network steam discharge heat supply network and heatDevice, described steam-operating circulation pump of heat-supply network steam discharge with heat exchangers for district heating to through steam-operating circulation pump of heat-supply network and electronic circulation pump of heat-supply networkHeat supply network backwater after boosting heats to produce heat supply network and supplies water to outer net heat supply; Described small turbine by small turbine export everyDisconnected valve is connected to steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heating, described steam-operating circulation pump of heat-supply network steam discharge heat exchangers for district heatingAlso being connected to described multiple steam turbine by steam-operating circulation pump of heat-supply network steam discharge with heat exchangers for district heating and turbine bleed point isolating valve, takes outSteam ports.
3. heat network system according to claim 2, is characterized in that:
When small turbine inlet steam transfer valve is opened, small turbine outlet isolating valve, is opened and steam-operating circulation pump of heat-supply network rowWhen vapour is closed with heat exchangers for district heating and turbine bleed point isolating valve,, small turbine exhaust is heat for steam-operating circulation pump of heat-supply network steam dischargeThe thermal source of net heater; When small turbine inlet steam transfer valve cuts out, small turbine outlet isolating valve, is closed and steam heatWhen net water circulating pump steam discharge is opened with heat exchangers for district heating and turbine bleed point isolating valve,, extracted steam from turbine is steam-operating heat supply network recirculated waterThe thermal source of heat exchangers for district heating for pump steam discharge.
4. according to the arbitrary described heat network system of claim 1-3, it is characterized in that:
The number of described steam-operating circulation pump of heat-supply network is one or more.
5. heat network system according to claim 4, is characterized in that:
The number of described electronic circulation pump of heat-supply network is one or more.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520930240.1U CN205261697U (en) | 2015-11-19 | 2015-11-19 | Steam -operating and electronic heat supply network circulating water pump united operation's heat supply network system |
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| CN201520930240.1U CN205261697U (en) | 2015-11-19 | 2015-11-19 | Steam -operating and electronic heat supply network circulating water pump united operation's heat supply network system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798809A (en) * | 2018-08-08 | 2018-11-13 | 国电龙源电力技术工程有限责任公司 | The integrated heating system of small steam turbine coupled electricity-generation unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798809A (en) * | 2018-08-08 | 2018-11-13 | 国电龙源电力技术工程有限责任公司 | The integrated heating system of small steam turbine coupled electricity-generation unit |
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