CN202073608U - Heating-up and pressure-boosting system for vacuum steam of steam turbine - Google Patents
Heating-up and pressure-boosting system for vacuum steam of steam turbine Download PDFInfo
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- CN202073608U CN202073608U CN 201120068915 CN201120068915U CN202073608U CN 202073608 U CN202073608 U CN 202073608U CN 201120068915 CN201120068915 CN 201120068915 CN 201120068915 U CN201120068915 U CN 201120068915U CN 202073608 U CN202073608 U CN 202073608U
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- jet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K19/00—Regenerating or otherwise treating steam exhausted from steam engine plant
- F01K19/02—Regenerating by compression
- F01K19/08—Regenerating by compression compression done by injection apparatus, jet blower, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/08—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam
- F22B1/14—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam coming in direct contact with water in bulk or in sprays
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Abstract
The utility model relates to a heating-up and pressure-boosting system for vacuum steam of a steam turbine, including a condenser, a deaerization plant, a recovering tank, a first level jet pump and a second level jet pump; the recovering tank is provided with a jet pipeline and a reuse water pipeline; a high pressure draining pump is arranged on the jet pipeline; a reuse water draining pump is arranged on the reuse water pipeline; jet inlets of the first level jet pump and the second level jet pump are connected to a water outlet pipe of the condenser and/or the jet pipeline through pipelines; a suction inlet of the first level jet pump is connected with a steam discharge pipe of the condenser; the suction inlet of the second level jet pump is connected with an outlet of the first level jet pump; and the outlet of the second level jet pump is connected with an inlet of the recovering tank. The heating-up and pressure-boosting system for vacuum steam of the steam turbine can pump vacuum steam and condensed water which is formed after being cooled by the condenser to the recovering tank through the jet pump and feed to a condensed water recovering source after heating up and pressure boosting, thereby realizing recovery and reuse of water resource and heat energy in vacuum steam.
Description
Technical field
The utility model relates to a kind of steam turbine vacuum vapour reclaiming system, and particularly a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system is used for the recycling of the vacuum vapour of steam turbine discharging.
Background technique
Referring to Fig. 1, steam turbine vacuum steam reclamation system of the prior art mainly is that the vapour-water circulation system that adopts vacuum such as steam turbine 1, vapour condenser 2, oxygen-eliminating device 6 and cooling tower 3 to constitute realizes the recycling of water resources in the vacuum vapour and the discharging of used heat, though adopt this kind steam turbine vacuum steam reclamation system to utilize again by recovery section vacuum vapour, vacuum vapour is discharged in the atmosphere directly or indirectly but still have greatly, has also caused the thermo-pollution of environment when wasting a large amount of heat energy.Although the vacuum vapour that in some system vacuum vapour equipment is produced reclaims, because the vacuum steam pressure is low, it is difficult for flowing in pipeline, makes that the recovery rate of vacuum vapour is limited, and the working efficiency of system is not high.
The model utility content
For overcoming the above-mentioned defective of prior art, the purpose of this utility model is to provide a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, can under the situation that does not influence vacuum equipment work, water resources in the vacuum vapour and heat energy be carried out recycling behind the temperature raising pressure-raising.
The utility model realizes that the technological scheme that above-mentioned purpose adopted is:
A kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, comprise vapour condenser and oxygen-eliminating device, also comprise recycling can, one-level Jet injector and secondary jets pump, described recycling can is provided with jet pipeline and recycle-water pipeline, described jet pipeline and recycle-water pipeline are by same main sewer or be connected the water storage zone of described recycling can independently of one another, the jet pipeline in the water storage zone of described main sewer or the described recycling can of described separate connection is provided with the High Pressure Drain pump, the recycle-water pipeline in the water storage zone of the described recycling can of described separate connection is provided with the reuse draining pump, the jet inlet of described one-level Jet injector and secondary jets pump is connected the outlet pipe and/or the described jet pipeline of described vapour condenser by pipeline, the suction inlet of described one-level Jet injector connects the exhaust steam pipe of described vapour condenser, the suction inlet of described secondary jets pump connects described one-level jet delivery side of pump, described secondary jets delivery side of pump connects the inlet of described recycling can, described recycle-water pipeline is provided with draining control or cut-off valve, and connect the water intake of described oxygen-eliminating device, described recycling can is provided with the sensing device that is used to gather its water level signal, the signal output part of described sensing device connects a control gear, and the control signal output terminal of described control gear connects the control wiring of described draining control or cut-off valve.
Described one-level Jet injector is preferably the pipe type Jet injector, and described secondary jets pump is preferably multistage Jet injector.
Described secondary jets pump can be for being provided with the vertical Jet injector of two-step supercharging, can be provided with one-level jet pipe and secondary jets pipe, the import of described one-level jet pipe and secondary jets pipe all constitutes the jet inlet of described secondary jets pump, the jet of described one-level jet pipe is used to the MEDIA FLOW supercharging that enters from the suction inlet of described secondary jets pump, and the jet of described secondary jets pipe is used to the supercharging of the MEDIA FLOW after the supercharging of described one-level jet pipe.
The quantity of the quantity of described one-level jet pipe and/or described secondary jets pipe can be for one or more, in the quantity of described one-level jet pipe when being a plurality of, the suction inlet of described secondary jets pump can be divided into multichannel, the MEDIA FLOW supercharging that each described one-level jet pipe enters for the suction inlet from a road described secondary jets pump corresponding with it, when the quantity of described secondary jets pipe was a plurality of, the outlet of described a plurality of secondary jets pipes can balancedly be distributed on cross section of medium channel of the pump housing of described secondary jets pump.
The pump housing of described secondary jets pump preferably is vertical tubulose, be provided with a plurality of pumping tubes, described each pumping tube can rotate symmetrical distribution, the inlet of each pumping tube constitutes the suction inlet of described secondary jets pump, the sidewall that described pumping tube can pass the pump housing extends in the pump housing, its part that is positioned at the pump housing is provided with downward bending, the pumping tube that is positioned at described bending below can be the identical straight tube-like of axial direction with the pump housing of described secondary jets pump, the ear end face that described secondary jets pipe can pass the pump housing of described secondary jets pump extends in the described pump housing, its outlet can be positioned at described each pumping tube outlet the top and make the outlet of described each pumping tube be positioned at the jeting area of its jet, described one-level jet pipe can penetrate described pumping tube and extend to the outlet section of described pumping tube along the bearing of trend of described pumping tube always outside the pump housing, its outlet can be positioned at the inboard of the outlet of described pumping tube, and its jet injection zone is along the axial whole cross section that is expanded to gradually in the described pumping tube of pumping tube.
The main body of the pump housing of preferred described secondary jets pump is vertical tubulose, the rear portion is the elbow shape, the outer end of described elbow constitutes the suction inlet of described secondary jets pump, described one-level jet pipe can penetrate the inner chamber of described secondary jets pump along the axis of the pump housing of described secondary jets pump from the rear portion of described secondary jets pump, be provided with the one-level jet pipe extension of the pump housing that is positioned at described secondary jets pump, described one-level jet pipe extension preferably is straight tube-like, described secondary jets pipe can penetrate in the pump housing of described secondary jets pump from the sidewall of the pump housing of described secondary jets pump, its part that is positioned at the pump housing of described secondary jets pump is provided with bending, preferably be the identical straight tube-like of axial direction with the pump housing of described secondary jets pump after the bending, the outlet of described secondary jets pipe is positioned at the jeting area of the outlet of described one-level jet pipe.
The main body of the pump housing of described one-level Jet injector preferably in a tubular form, the import of the described tubulose pump housing constitutes the suction inlet of described one-level Jet injector, the described one-level jet of export mixes delivery side of pump, the jet pipe of described one-level Jet injector can be provided with jet orifice or the jet pipe that is positioned at the described pump housing, the quantity of described jet orifice or jet pipe can be for a plurality of, be distributed on the same cross section of the described tubulose pump housing or on a plurality of different cross section, and towards the axis bearing of trend of the described pump housing.
Described one-level Jet injector jet pipeline can pass the sidewall of the described pump housing, be connected with the jet distributing tube that is positioned at the described pump housing, described jet distributing tube comprises and the coaxial extension of described one-level Jet injector jet pipeline, described extension can be provided with or not establish the cross pipe that is communicated with it, the port closed of described extension and cross pipe, can be provided with a plurality of jet orifices or jet pipe on described extension and the cross pipe, described each jet orifice or jet pipe equiblibrium mass distribution on described extension and cross pipe.
Described recycling can also be provided with safety valve and outlet valve, described safety valve and outlet valve preferably are installed in the top of described recycling can respectively, the water of condensation outlet that is used to connect the jet pipeline in described main sewer or the described water storage zone that connects described recycling can independently of one another and recycle-water pipeline on the described recycling can preferably is arranged on the bottom of described recycling can, the quantity of described High Pressure Drain pump preferably two of the using and the reserved or how with one be equipped with a plurality of.
The quantity of described recycling can be several, and the quantity of described one-level Jet injector and secondary jets pump is identical with the quantity of described recycling can, and with one one corresponding setting.
The utility model beneficial effect compared with prior art is:
1, the utility model has adopted the two stage jet pump of different structure to cooperatively interact, by the vacuum vapour flowability problem in the one-level Jet injector solution big-diameter pipeline, by the secondary jets pump vacuum vapour and water of condensation are sent into the recycling can recovery, overcome the technical problem that is difficult to improve the reuse efficiency of vacuum vapour under the big caliber under the prior art thus, because the characteristic of flowing medium, this technological means that the utility model adopts is with respect to identical a plurality of Jet injector serial or parallel connections, under same flow and supercharging amplitude, can reduce power consumption significantly, the overall formation of simplified system.Experiment according to the claimant, adopt the two stage jet pump fit system that the utility model limited, with respect to adopt by a plurality of common Jet injector series parallel connection compound modes (according to flow be divided into two branch roads, according to two Jet injectors of series connection on every branch road of supercharging amplitude), under the flow situation equal with reuse efficiency, power consumption reduces about 35%.
2, the introducing of the one-level Jet injector of pipe type, improved the flowing velocity of vacuum vapour in the exhaust steam pipe of vapour condenser effectively, promptly improved the delivery volume of vacuum vapour, for recycling can provides enough vacuum vapour, solved vacuum vapour in the prior art transport pipeline (among the diameter 1m～2m) owing to caliber the big and low flow velocity that causes of vacuum steam pressure cross the technical problem of the recovery difficulty that causes slowly, simultaneously for the secondary jets pump provide pressure higher relatively be sucked medium, help to improve the suction effect of secondary jets pump; The setting of the jet distributing tube of one-level Jet injector, in the pump housing of one-level Jet injector, formed the multiple jets of equiblibrium mass distribution, on whole medium channel, form negative pressure region, drive is flowed forward from the exhaust steam of pump housing entrance point, has overcome the defective that rate-of flow little, power consumption greatly under big-diameter pipeline be difficult to solve air flowability of existing common Jet injector because of suction.
3, vacuum vapour increases through its pressure after the supercharging of one-level Jet injector, help the suction of secondary jets pump, the setting of a plurality of suction inlets of secondary jets pump, can carry out supercharging to the medium that is sucked more effectively, make to be sucked medium and can more successfully to enter recycling can from the one-level Jet injector.
4, because the secondary jets pump adopts vertical Jet injector to be arranged at the top of recycling can, the flow direction of the medium (water or vapour+aqueous mixtures) in the secondary jets pump is utilized the potential energy of water and suction force and the suction effect that the from up to down mobile kinetic energy that forms of binding medium has improved the secondary jets pump effectively vertically downward fully.
5, by one-level Jet injector and secondary jets pump the vacuum vapour in the vapour condenser is drawn in the recycling can, and in recycling can, be translated into can reuse high-temperature high pressure water, not only effectively utilized the vacuum vapour of steam turbine discharging, and by behind vapour condenser, having increased the suction effect of Jet injector, can improve the degree of vacuum in the vapour condenser significantly, thus under the prerequisite that guarantees the normal operation of steam turbine, help reducing required condensing degree of vacuum, reduction is to the cooling requirement of follow-up cooling tower, the water yield and the heat of cooling tower discharging have been reduced significantly, help saving the resource and the energy, the power consumption that the vacuum vapour of also having avoided independent use Jet injector to reclaim the generation of vacuum vapour equipment is simultaneously brought is big, defectives such as performance difficulty.
6; owing to being introduced in one-level and/or the secondary jets pump directly or indirectly, the water of condensation in the vapour condenser vacuum vapour in the vapour condenser is aspirated as jet media; not only saved the power of the required consumption of jet; also utilize the vacuum vapour and jet media fully mixing in Jet injector and recycling can that aspirate out in the vapour condenser; vacuum vapour is condensed rapidly; and the heat that utilizes vacuum vapour to condense to be discharged heats the water in the recycling can (or being called jet media); the temperature that has improved recycle-water (can reach about 100 ℃ under the normal pressure usually; after the high-pressure service pump pressurization, can reach about 120 ℃ usually); effectively reduced the heat that the water of condensation that enters multistage heater or oxygen-eliminating device is heated to the required absorption of saturation temperature once more; realized recycling to water resources in the vacuum vapour and heat energy; reached the purpose of energy saving and protection environment, returned enterprise simultaneously and brought direct economic benefit.
7, owing to being condensed by the vacuum vapour in the vapour condenser, the water in the recycling can forms, the salinity of water is low, because whole reuse process is all carried out in locking system, the oxygen content of water is low, owing to discharged heat in the carbonated drink phase transition process in the callback course, the temperature height of water, therefore the water of condensation that adopts the utility model to reclaim can be adapted to the boiler feed water requirement better, carry out reuse by it being sent into oxygen-eliminating device, can reduce the processing cost of boiler feed water significantly, not only reduce the waste of heat energy and water resources, but also had economic benefit significantly.
Description of drawings
Fig. 1 is the steam turbine vacuum vapour reclaiming system schematic representation of prior art;
Fig. 2 is a steam turbine vacuum stripping temperature pressure-raising reclaiming system structural representation of the present utility model;
Fig. 3 is the structural representation of one-level Jet injector of the present utility model;
Fig. 4 is a secondary jets pump structure schematic representation of the present utility model;
Fig. 5 is an another kind of secondary jets pump structure schematic representation of the present utility model.
Embodiment
For clearer explanation the utility model, so that better understand the utility model, next the utility model will be further described by embodiment in conjunction with the accompanying drawings.
Referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model provides a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, comprise vapour condenser 2 and oxygen-eliminating device 16, described vapour condenser is provided with outlet pipe 3 and exhaust steam pipe 4, described steam turbine vacuum stripping temperature pressure-raising reclaiming system also comprises recycling can 1, one-level Jet injector 5 and secondary jets pump 6, described secondary jets pump is preferably the vertical Jet injector that is provided with two-step supercharging, axially vertically downward, be positioned at the top of described recycling can, described recycling can is provided with recycle-water pipeline 7 that is used for draining and the jet pipeline 8 that is used to form jet, described jet pipeline and recycle-water pipeline are by same main sewer or be connected the outlet area of described recycling can independently of one another, the jet pipeline in the water storage zone of described main sewer or the described recycling can of described separate connection is provided with High Pressure Drain pump 9 and 9 ＇, the recycle-water pipeline of the outlet area of the described recycling can of described separate connection is provided with the reuse draining pump, the jet inlet of described one-level Jet injector and secondary jets pump is connected the outlet pipe and/or the described jet pipeline of described vapour condenser by pipeline, the suction inlet of described one-level Jet injector connects the exhaust steam pipe of described vapour condenser, be used for the vacuum vapour in the described vapour condenser is aspirated into described one-level Jet injector, the suction inlet of described secondary jets pump connects described one-level jet delivery side of pump, be used for that the one-level Jet injector is aspirated into described secondary jets with jet media mixing final vacuum vapour and be pumped into recycling can, realize the recovery of the heat energy of vacuum vapour, described secondary jets delivery side of pump connects the inlet of described recycling can, the inlet of described recycling can preferably is arranged on the top of described recycling can, flow from the top down after making jet enter described recycling can, can be provided with high-pressure service pump 10 on the pipeline of described connection one-level Jet injector and secondary jets pump or the outlet pipe of described vapour condenser, be used to increase the pressure in the pipeline, pressure in the described one-level Jet injector jet pipeline preferably is not less than 0.5MPa, is beneficial to the suction of vacuum vapour and keeping of degree of vacuum.In order to realize the operation of native system better, can on the outlet pipe of described vapour condenser, stop valve be set, to make things convenient for the whereabouts of controlling plumbing fixtures medium.
Described recycle-water pipeline is provided with draining control or cut-off valve 13, and connect the water intake of described oxygen-eliminating device, described recycling can is provided with the sensing device 14 that is used to gather its water level signal, the signal output part of described sensing device connects a control gear 15, described control gear is according to default program or Control Parameter work, its control signal output terminal connects the control wiring of described draining control or cut-off valve, so that draining is controlled, the water level in the described recycling can is maintained in certain scope according to the water level in the described recycling can.
In order to improve the overall operation efficiency of system, the preferred multi-stage multi-pipe Jet injector of described secondary jets pump guarantees recycling can be sent in exhaust steam (liquid-vapor mixture) and formed enough pressure in recycling can to form enough pressure.
Described secondary jets pump adopts two-step supercharging usually, be provided with one-level jet pipe and secondary jets pipe, the import of described one-level jet pipe and secondary jets pipe all constitutes the inlet of described secondary jets pump, wherein the jet of one-level jet pipe is used for the supercharging conveying that import is sucked MEDIA FLOW, and the jet of secondary jets pipe is used for the supercharging of the MEDIA FLOW of one-level jet pipe supercharging output and carries.
Preferably, the quantity of described one-level jet pipe is a plurality of, thus import is sucked MEDIA FLOW and is divided into multichannel, to reduce the suction flow of each one-level jet pipe, provides possibility for increase the jet pump head effectively under big flow.
Preferably, the quantity of described secondary jets pipe is a plurality of, and its outlet balancedly is distributed on the cross section of secondary jets pump, to overcome the flow smaller defect that single jet pipe can aspirate, guarantees the effective use under big flow occasion.
Fig. 4 provides a kind of embodiment of secondary jets pump, the pump housing of this secondary jets pump is vertical tubulose, be provided with a plurality of pumping tubes 61, described each pumping tube rotation is symmetrically distributed, the inlet of each pumping tube constitutes the suction inlet of described secondary jets pump, the inlet of each pumping tube can connect described one-level jet delivery side of pump or can connect a main pumping tube, described main pumping tube connects described one-level jet delivery side of pump, the sidewall that described pumping tube passes the pump housing extends in the pump housing, its part that is positioned at the pump housing is bending and extends downwards, outlet section 62 is the straight tube along pump housing axial direction, the quantity of described pumping tube is generally a plurality of, and evenly distribute at sustained height upper edge circumference, under the less situation of suction flow, also can be one.This secondary jets pump is provided with one-level jet pipe 63 and secondary jets pipe 64, described secondary jets pipe passes pump housing ear end face and extends in the described pump housing, its outlet is positioned at the top of the outlet of described pumping tube, described one-level jet pipe penetrates described pumping tube and extends to the outlet section of described pumping tube along described pumping tube axial direction always outside the pump housing, its outlet is positioned within the outlet end of described pumping tube.The described pumping tube that MEDIA FLOW at first enters this secondary jets pump that is sucked from the one-level Jet injector, described one-level jet pipe penetrates the one-level jet in pumping tube, in pumping tube, form negative pressure, make and be sucked medium and under the effect of this negative pressure, flow forward, the jet that penetrates with the one-level jet pipe mixes, described secondary jets pipe forms negative pressure (comparatively speaking) in the pump housing, drive and extract the jet suction of being penetrated by the one-level jet pipe, formation mixed medium stream, and the secondary jets pipe forms negative pressuren zone in the pump housing, and the mixed medium stream that drives in the pumping tube flows.
Fig. 5 has provided the another kind of embodiment of secondary jets pump, in this embodiment, the main body of the pump housing of described secondary jets pump is vertical tubulose, the rear portion is elbow shape 65, the external port of described elbow constitutes the suction inlet of described secondary jets pump, both made things convenient for the connection of secondary jets pump with relevant pipeline thus, the suction inlet channel that has also guaranteed the secondary jets pump is the negative pressure region of the outlet back of described one-level jet pipe just, to improve suction effect.Described secondary jets pump is provided with one-level jet pipe 63 and secondary jets pipe 64, preferably, described one-level jet pipe penetrates the inner chamber of described secondary jets pump from the rear portion of described secondary jets pump along the axis of the pump housing of described secondary jets pump, be provided with the extension of the pump housing that is positioned at described secondary jets pump, described one-level jet pipe extension is straight tube-like, preferably extend along the axial direction of described secondary jets pump described one-level jet pipe extension, and in the end its outlet (being the outlet of one-level jet media), the one-level jet media outwards sprays from this outlet, forms the jeting area of taper in the inner chamber of the pump housing.Preferably, described one-level jet media outlet can be arranged to taper mouth, to optimize jet, described one-level jet media Way out should be towards the MEDIA FLOW in the pump housing of described secondary jets pump to direction, described secondary jets pipe can be provided with the secondary jets pipe extension in the pump housing that extends into described secondary jets pump, described secondary jets pipe extension preferably is provided with bending, be the identical straight tube-like of axial direction after the bending with the pump housing of described secondary jets pump, and be provided with the secondary jets media outlet in the end, described secondary jets media outlet can be arranged to taper mouth, so that form required jet better, described secondary jets media outlet direction (opening direction of the outlet of secondary jets pipe) preferably the MEDIA FLOW in the pump housing of described secondary jets pump to direction, the outlet of described secondary jets pipe is preferably placed in the jeting area of outlet of described one-level jet pipe, to improve the pumping action of secondary jets.
Described secondary jets pump is preferably vertical Jet injector, mixed medium stream after jet and the suction from the top down, obtain better suction effect with the potential energy that utilizes medium, particularly in the commercial Application, because exhaust steam and mixed medium flow are very big, therefore the height of Jet injector often has several meters even higher, can improve the jet pump head significantly thus, saves power consumption significantly.
The quantity of the secondary jets pipe of described secondary jets pump can be one or several, when the quantity of described secondary jets pipe is several, described several secondary jets pipes can evenly be connected on the same circumference of radial direction of described secondary jets pump, perhaps described secondary jets pipe is provided with several secondary jets pipe arms, one end of described several described secondary jets pipe arms connects described secondary jets pipe, the other end evenly is connected on the same circumference of radial direction of described secondary jets pump, the outlet of described secondary jets pipe balancedly is distributed on the cross section of the medium channel in the pump housing of described secondary jets pump, several secondary jets pipes of described secondary jets pump or the setting of secondary jets pipe arm, can carry out supercharging to the medium that is sucked more effectively, make to be sucked medium and can more successfully to enter recycling can from described one-level Jet injector.
The pumping tube of described secondary jets pump is arranged to equally distributed a plurality of pipeline, the MEDIA FLOW of big flow can be decomposed into the MEDIA FLOW of a plurality of relative small flows, in each pumping tube, carry out the suction supercharging of one-level jet pipe respectively, the suction flow that has solved common Jet injector thus is little, can't be the defective of big flow medium supercharging, realized the supercharging of big flow MEDIA FLOW effectively, the pressurization by the secondary jets pipe in the pump housing simultaneously, formed stable and reliable supercharging MEDIA FLOW, help improving the pump housing of secondary jets pump and the MEDIA FLOW state in the recycling can, guarantee that MEDIA FLOW successfully enters in the described recycling can.
Referring to Fig. 3, overall conveying capacity for the MEDIA FLOW state that improves total system and the combination of two stage jet pump, described one-level Jet injector preferred pipeline formula Jet injector, the main body of its pump housing in a tubular form, the import of the described tubulose pump housing constitutes the suction inlet 51 of one-level Jet injector, export mixes one-level jet delivery side of pump 52, described one-level Jet injector jet pipeline passes the sidewall of the described pump housing, extend in the pump housing, be connected with the jet distributing tube that is positioned at the described pump housing, described jet distributing tube comprises and the coaxial extension 53 of described one-level Jet injector jet pipeline, described extension is positioned on the cross section of the described pump housing, radial direction along the pump housing is extended, the end is sealed or is sealedly connected on the inwall of the described pump housing, described extension is provided with a plurality of jet orifices or jet pipe 54, can be provided with one or more cross pipes that are communicated with it 55 on the described extension, described cross pipe also evenly is provided with several jet orifices or jet pipe, described each jet orifice and jet pipe usually should be towards the axis bearing of trends of the described pump housing, be beneficial to reduce resistance, improve suction effect, preferred described each jet orifice or jet pipe equiblibrium mass distribution.
Described jet pipe can be not more than 1:5 with the internal diameter of described extension or cross pipe than usually, preferably be not more than 1:10, as 1:10,1:12,1:15,1:18,1:20 or 1:30, in described extension and cross pipe, to spare pressure, the pressure and the exit velocity of each jet pipe are kept in balance basically, and guarantee that jet has sufficiently high flow velocity, thereby improve suction force and to being sucked the suction effect of medium, improve the interior media flow state of exhaust steam pipe of described vapour condenser, reduce turbulent flow and power consumption.Described jet media outlet can be arranged to conical outlet, so that form jet better.
By the setting of this a plurality of jet orifices, in the pump housing of one-level Jet injector, formed the multiple jets of equiblibrium mass distribution, on whole medium channel, form negative pressure region, drive from the exhaust steam of pump housing entrance point and flow forward.This pipe type Jet injector particularly is adapted to drive the media flow of big flow in big-diameter pipeline, overcome the defective that rate-of flow little, power consumption greatly under big-diameter pipeline be difficult to solve air flowability of existing common Jet injector because of suction.
In general, the pressurization difficulty of vacuum vapour, and in turbine system, the caliber of the exhaust steam pipe of vacuum vapour is all about 1m～2m, because the too small transmission of vacuum steam pressure that it transmitted is difficulty comparatively, the setting of one-level Jet injector, improved vacuum vapour flowing velocity in outlet pipe effectively, solved vacuum vapour in transporting pipeline because caliber is big and the low technical problem that is difficult to reclaim that causes of vacuum steam pressure, also can be simultaneously the secondary jets pump provide pressure higher relatively be sucked medium, help to improve the suction effect of secondary jets pump.In general, vacuum stripping temperature in the exhaust steam pipe of described vapour condenser is about 30 ℃～50 ℃, after the suction through the one-level Jet injector, it is about 40 ℃～70 ℃ that the mixed medium temperature in the described suction channel can raise usually, and the temperature and the pressure of vacuum vapour all increase.
Described recycling can is preferably vertical recycling can, its vertical dimension is greater than its transverse dimension, described recycling can is an air-tight state, its inner gaseous pressure is a standard atmospheric pressure, be beneficial to the secondary jets pump in recycling can medium transport and recycling can in vacuum vapour condense about 100 ℃ of its inner condensing water temperatures.
According to different real work situations, vacuum vapour discharge capacity as vacuum vapour equipment, the quantity of described recycling can be arranged to several, the quantity of described one-level Jet injector and secondary jets pump is identical with the quantity of described recycling can, and corresponding one by one the setting, adopt mode in parallel jointly the water resources and the heat energy of vacuum vapour to be carried out recycling.The recycle-water pipeline of some described recycling cans can connect described water of condensation respectively and reclaim the source, also can connect same main recycle-water pipeline, described main drainpipe road connects described water of condensation and reclaims the source, when adopting this kind to be provided with, each pipeline that connects with described one-level Jet injector and/or secondary jets pump all can be provided with the arm identical with the quantity of described recycling can, and connects with corresponding Jet injector.
In order to realize automatic, safe, efficient, the continuous operation of system, described recycling can be provided with safety valve 11 and outlet valve 12, described safety valve and outlet valve can be installed in the top of described recycling can respectively, the non-condensible gas that can not form water of condensation regularly can be discharged by described outlet valve, in order to avoid take the space of described recycling can too much, described safety valve can be in described recycling can internal pressure above releasing pressure automatically after the certain limit, with the pressure stability in the assurance recycling can and the safe operation of system.The outlet of described recycling can preferably is arranged on the bottom of described recycling can, what guarantee thus to come out from the outlet of described recycling can all is water of condensation, condensing water temperature through recycle-water pipeline pressurization output can reach 80 ℃～120 ℃, more help second use, the quantity of described High Pressure Drain pump can be two of the using and the reserved, also can for how with one be equipped with a plurality of.
All can be provided with suitable valve on related each pipeline of the utility model, realize control, can also pressure gauge need be set foundation, regulate with pressure according to its demonstration with convenient.
The diameter of each pipeline that the utility model is related can be according to the size and the suitable selection of requirement of engineering of Jet injector and recycling can, described each pipeline can adopt isometrical pipe, with convenient processing, can at least one be not isometrical pipe also, with flow velocity and the resistance requirement that adapts to diverse location.Can adopt welding between described each pipeline and between each pipeline and the Jet injector, molding and forming or other suitable mode are connected successively, arbitrary body passes the interconnecting to be and be tightly connected of the pump housing of another body or Jet injector.
The negative pressure of this specification is all for the related original pressure that is sucked medium of this negative pressure, and its absolute value can be less than barometric pressure, also can be greater than barometric pressure.
Claims (10)
1. steam turbine vacuum stripping temperature pressure-raising reclaiming system, comprise vapour condenser and oxygen-eliminating device, it is characterized in that also comprising recycling can, one-level Jet injector and secondary jets pump, described recycling can is provided with jet pipeline and recycle-water pipeline, described jet pipeline and recycle-water pipeline are by same main sewer or be connected the water storage zone of described recycling can independently of one another, the jet pipeline in the water storage zone of described main sewer or the described recycling can of described separate connection is provided with the High Pressure Drain pump, the recycle-water pipeline in the water storage zone of the described recycling can of described separate connection is provided with the reuse draining pump, the jet inlet of described one-level Jet injector and secondary jets pump is connected the outlet pipe and/or the described jet pipeline of described vapour condenser by pipeline, the suction inlet of described one-level Jet injector connects the exhaust steam pipe of described vapour condenser, the suction inlet of described secondary jets pump connects described one-level jet delivery side of pump, described secondary jets delivery side of pump connects the inlet of described recycling can, described recycle-water pipeline is provided with draining control or cut-off valve, and connect the water intake of described oxygen-eliminating device, described recycling can is provided with the sensing device that is used to gather its water level signal, the signal output part of described sensing device connects a control gear, and the control signal output terminal of described control gear connects the control wiring of described draining control or cut-off valve.
2. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 1 is characterized in that described one-level Jet injector is the pipe type Jet injector, and described secondary jets pump is multistage Jet injector.
3. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 2, it is characterized in that described secondary jets pump is the vertical Jet injector that is provided with two-step supercharging, be provided with one-level jet pipe and secondary jets pipe, the import of described one-level jet pipe and secondary jets pipe all constitutes the jet inlet of described secondary jets pump, the jet of described one-level jet pipe is used to the MEDIA FLOW supercharging that enters from the suction inlet of described secondary jets pump, and the jet of described secondary jets pipe is used to the supercharging of the MEDIA FLOW after the supercharging of described one-level jet pipe.
4. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 3, it is characterized in that the quantity of described one-level jet pipe and/or the quantity of described secondary jets pipe are one or more, when the quantity of described one-level jet pipe is a plurality of, the suction inlet of described secondary jets pump is divided into multichannel, the MEDIA FLOW supercharging that each described one-level jet pipe enters for the suction inlet from a road described secondary jets pump corresponding with it, when the quantity of described secondary jets pipe was a plurality of, the outlet of described a plurality of secondary jets pipes balancedly was distributed on the cross section of the medium channel in the pump housing of described secondary jets pump.
5. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 3, the pump housing that it is characterized in that described secondary jets pump is vertical tubulose, be provided with a plurality of pumping tubes, described each pumping tube rotation is symmetrically distributed, the inlet of each pumping tube constitutes the suction inlet of described secondary jets pump, the sidewall that described pumping tube passes the pump housing extends in the pump housing, its part that is positioned at the pump housing is provided with downward bending, the pumping tube that is positioned at described bending below is the identical straight tube-like of axial direction with the pump housing of described secondary jets pump, the ear end face that described secondary jets pipe passes the pump housing of described secondary jets pump extends in the described pump housing, its outlet be positioned at described each pumping tube outlet the top and make the outlet of described each pumping tube be positioned at the jeting area of its jet, described one-level jet pipe penetrates described pumping tube and extends to the outlet section of described pumping tube along the bearing of trend of described pumping tube always outside the pump housing, its outlet is positioned at the inboard of the outlet of described pumping tube, and its jet injection zone is along the axial whole cross section that is expanded to gradually in the described pumping tube of pumping tube.
6. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 3, the main body that it is characterized in that the pump housing of described secondary jets pump is vertical tubulose, the rear portion is the elbow shape, the external port of described elbow constitutes the suction inlet of described secondary jets pump, described one-level jet pipe penetrates the inner chamber of described secondary jets pump from the rear portion of described secondary jets pump along the axis of the pump housing of described secondary jets pump, be provided with the one-level jet pipe extension of the pump housing that is positioned at described secondary jets pump, described one-level jet pipe extension is straight tube-like, described secondary jets pipe penetrates in the pump housing of described secondary jets pump from the sidewall of the pump housing of described secondary jets pump, its part that is positioned at the pump housing of described secondary jets pump is provided with bending, be the identical straight tube-like of axial direction with the pump housing of described secondary jets pump after the bending, the outlet of described secondary jets pipe is positioned at the jeting area of the outlet of described one-level jet pipe.
7. as claim 1,2,3,4,5 or 6 described steam turbine vacuum stripping temperature pressure-raising reclaiming systems, it is characterized in that described one-level Jet injector the pump housing main body in a tubular form, the import of the described tubulose pump housing constitutes the suction inlet of described one-level Jet injector, the described one-level jet of export mixes delivery side of pump, the jet pipe of described one-level Jet injector is provided with jet orifice or the jet pipe that is positioned at the described pump housing, the quantity of described jet orifice or jet pipe is a plurality of, be distributed on the same cross section of the described tubulose pump housing or on a plurality of different cross section, and towards the axis bearing of trend of the described pump housing.
8. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 7, the jet pipeline of described one-level Jet injector passes the sidewall of the described pump housing, be connected with the jet distributing tube that is positioned at the described pump housing, described jet distributing tube comprises and the coaxial extension of described one-level Jet injector jet pipeline, described extension is provided with or does not establish the cross pipe that is communicated with it, the port closed of described extension and cross pipe, described extension and cross pipe are provided with described a plurality of jet orifice or jet pipe, described each jet orifice or jet pipe equiblibrium mass distribution on described extension and cross pipe.
9. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 8, it is characterized in that described recycling can also is provided with safety valve and outlet valve, described safety valve and outlet valve are installed in the top of described recycling can respectively, the water of condensation outlet that is used to connect the jet pipeline in the total or described water storage zone that connects described recycling can independently of one another of described draining and recycle-water pipeline on the described recycling can is arranged on the bottom of described recycling can, the quantity of described High Pressure Drain pump be two of the using and the reserved or how with one be equipped with a plurality of.
10. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 9, the quantity that it is characterized in that described recycling can is several, the quantity of described one-level Jet injector and secondary jets pump is identical with the quantity of described recycling can, and with one one corresponding setting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120068915 CN202073608U (en) | 2011-03-16 | 2011-03-16 | Heating-up and pressure-boosting system for vacuum steam of steam turbine |
| PCT/CN2011/076836 WO2012122762A1 (en) | 2011-03-16 | 2011-07-04 | Turbine vacuum steam heating and pressurizing reuse system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120068915 CN202073608U (en) | 2011-03-16 | 2011-03-16 | Heating-up and pressure-boosting system for vacuum steam of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073608U true CN202073608U (en) | 2011-12-14 |
Family
ID=45111715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120068915 Expired - Fee Related CN202073608U (en) | 2011-03-16 | 2011-03-16 | Heating-up and pressure-boosting system for vacuum steam of steam turbine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202073608U (en) |
| WO (1) | WO2012122762A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162377A (en) * | 2011-03-16 | 2011-08-24 | 李树生 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3686867A (en) * | 1971-03-08 | 1972-08-29 | Francis R Hull | Regenerative ranking cycle power plant |
| DE2741514A1 (en) * | 1977-09-15 | 1979-03-22 | Wenzel Geb Dolmanns Yvonne | Energy utilising station powered by natural gas - has two injection pumps compressing gas for recycling between output and heat exchanger |
| CN1045846A (en) * | 1989-03-20 | 1990-10-03 | 邬建平 | Cavity-tongue type jet injector with high efficiency |
| CN100381678C (en) * | 2006-08-23 | 2008-04-16 | 李树生 | System of reclaiming exhaust steam in steam turbine |
| CN101644280A (en) * | 2009-05-31 | 2010-02-10 | 北京凝汽动力技术有限公司 | Multistage suction-ejection pump |
| CN102162377B (en) * | 2011-03-16 | 2013-11-06 | 李树生 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
-
2011
- 2011-03-16 CN CN 201120068915 patent/CN202073608U/en not_active Expired - Fee Related
- 2011-07-04 WO PCT/CN2011/076836 patent/WO2012122762A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162377A (en) * | 2011-03-16 | 2011-08-24 | 李树生 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
| CN102162377B (en) * | 2011-03-16 | 2013-11-06 | 李树生 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012122762A1 (en) | 2012-09-20 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20120316 |