CN102162377B - System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine - Google Patents
System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine Download PDFInfo
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- CN102162377B CN102162377B CN 201110062970 CN201110062970A CN102162377B CN 102162377 B CN102162377 B CN 102162377B CN 201110062970 CN201110062970 CN 201110062970 CN 201110062970 A CN201110062970 A CN 201110062970A CN 102162377 B CN102162377 B CN 102162377B
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Abstract
The invention relates to a system for reclaiming vacuum steam after temperature rise and pressure rise of a steam turbine, which comprises a recovery tank, a first-stage jet pump and a second-stage jet pump, wherein the recovery tank is provided with a jet pipe and a reclaimed water pipe, a high-pressure drainage pump is arranged on the jet pipe, a reclaimed water drainage pump is arranged on the reclaimed water pipe, the jet flow inlets of the first-stage and the second-stage jet pumps are connected with a water outlet pipe of a steam condenser and/or the jet pipe, the suction port of the first-stage jet pump is connected with the steam exhaust pipe of the steam condenser, the suction port of the second-stage jet pump is connected with the outlet of the first-stage jet pump, the outlet of the second-stage jet pump is connected with the inlet of the recovery tank. According to the invention, the vacuum steam and the condensed water which is generated under the cooling action of the steam condenser can be sucked into the recovery tank by the jet pump and delivered to a condensed water recovery source after temperature rise and pressure rise, therefore, the purpose of recovering and recycling the water resources and the heat energy in the vacuum steam is achieved.
Description
Technical field
The present invention relates to a kind of vacuum steam reclaiming system, particularly a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, be used for the recycling of the vacuum steam of vacuum steam equipment exhausting.
Background technique
Referring to Fig. 1, steam turbine vacuum steam reclamation system of the prior art is mainly that the vapour-water circulation system that adopts steam turbine 1, vapour condenser 2, oxygen-eliminating device 4 and cooling tower 3 to consist of realizes the recycling of water resources in vacuum steam and the discharging of used heat, although adopt this kind steam turbine vacuum steam reclamation system to recycle by the recovery section vacuum steam, vacuum steam is discharged in atmosphere directly or indirectly but still have greatly, has also caused the thermo-pollution of environment in the time of a large amount of heat energy of waste.Although the vacuum steam that in some system, steam turbine is produced reclaims, because vacuum steam pressure is low, it is difficult for flowing in pipeline, makes the recovery rate of vacuum steam limited, and the working efficiency of system is not high.
Summary of the invention
For overcoming the defects of prior art, the object of the present invention is to provide a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, can in the situation that do not affect vacuum equipment work, the water resources in vacuum steam and heat energy be carried out recycling after the temperature raising pressure-raising.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is:
a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, comprise vapour condenser, 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 is connected same main sewer or is connected independently of one another the water storage zone of described recycling can with the recycle-water device for cleaning pipeline, 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, described one-level Jet injector is connected jet inlet and is connected outlet pipe and/or the described jet pipeline of described vapour condenser by pipeline with the secondary jets pump, the suction entrance of described one-level Jet injector connects the exhaust steam pipe of described vapour condenser, described secondary jets delivery side of pump connects the entrance of described recycling can.
Described one-level Jet injector is preferably the pipe type Jet injector, and described secondary jets pump is preferably the Multi-stage jet pump.
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 consists of 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 entrance 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, when the quantity of described one-level jet pipe is a plurality of, the suction entrance 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 entrance 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 medium channel cross section 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 distribute by Rotational Symmetry, the entrance of each pumping tube consists of the suction entrance 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 straight tube-like identical with the axial direction of 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, its jet jeting area is along the axial whole cross section that is expanded to gradually in 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 consists of the suction entrance 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 straight tube-like identical with the axial direction of the pump housing of described secondary jets pump after 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 consists of the suction entrance 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 Extension direction 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 the extension coaxial with 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 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 arranged on respectively the top of described recycling can, the water of condensation outlet that is used for connecting the jet pipeline in described main sewer or the described water storage zone that connects independently of one another described recycling can and recycle-water pipeline on described recycling can preferably is arranged on the bottom of described recycling can, preferably two of the using and the reserved or multiplex one standby a plurality of of the quantity of described High Pressure Drain pump.
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 setting corresponding to one one.
The present invention's beneficial effect compared with prior art is:
1, the present invention has adopted the two stage jet pump of different structure to cooperatively interact, by the vacuum steam flowability problem in one-level Jet injector solution big-diameter pipeline, by the secondary jets pump, vacuum steam and water of condensation are sent into the recycling can recovery, overcome thus the technical problem that is difficult to improve the reuse efficiency of vacuum steam under Large Diameter Pipeline under the prior art, characteristic due to flowing medium, this technological means that the present invention adopts is with respect to identical a plurality of Jet injector serial or parallel connections, under same flow and supercharging amplitude, can reduce significantly power consumption, the overall formation of simplification system.Experiment according to the claimant, the two stage jet pump fit system that adopts the present invention to limit, 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), in the situation that flow and reuse efficiency equate, power consumption reduces approximately 35%.
2, the introducing of the one-level Jet injector of pipe type, effectively improved the flowing velocity of vacuum steam in the exhaust steam pipe of vapour condenser, namely improved the delivery volume of vacuum steam, for recycling can provides enough vacuum steams, solved vacuum steam in the prior art transport pipeline (in diameter 1m～2m) due to caliber the large 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 relatively high 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, formed the multiple jets of equiblibrium mass distribution in the pump housing of one-level Jet injector, form negative pressure region on whole medium channel, drive is flowed forward from the exhaust steam of pump housing entrance point, has overcome that existing common Jet injector is little because of the rate-of flow of suction, power consumption is difficult to solve greatly the defective of air flowability under big-diameter pipeline.
3, vacuum steam increases through its pressure after the supercharging of one-level Jet injector, be conducive to the suction of secondary jets pump, the setting of a plurality of suction entrances of secondary jets pump, can more effectively carry out supercharging to the medium that is sucked from the one-level Jet injector, make to be sucked medium and can more successfully to enter recycling can.
4, because adopting vertical Jet injector, the secondary jets pump is arranged at the top of recycling can, the flow direction of the medium (water or vapour+aqueous mixtures) in the secondary jets pump vertically downward, the kinetic energy that utilizes fully the potential energy of water and binding medium from up to down to flow to form has improved suction force and the suction effect of secondary jets pump effectively.
5, by one-level Jet injector and secondary jets pump, the vacuum steam in vapour condenser is drawn in recycling can, and be translated in recycling can reuse high-temperature high pressure water, not only effectively utilized the vacuum steam of steam turbine discharging, and by increased the suction effect of Jet injector after vapour condenser, can improve significantly the degree of vacuum in vapour condenser, thus under the prerequisite that guarantees the normal operation of steam turbine, be conducive to reduce required condensing degree of vacuum, the cooling requirement of reduction to follow-up cooling tower, decrease the water yield and the heat of cooling tower discharging, be conducive to saving resource and the energy, the power consumption that the vacuum steam of also having avoided simultaneously independent use Jet injector to reclaim the generation of vacuum steam equipment brings is large, the defectives such as performance difficulty.
6, due to being introduced in one-level and/or secondary jets pump directly or indirectly, the water of condensation in vapour condenser as jet media, the vacuum steam in vapour condenser is aspirated, not only saved the power of the required consumption of jet, also utilize the vacuum steam and jet media fully mixing in Jet injector and recycling can that aspirate out in the vapour condenser, vacuum steam is condensed rapidly, and the heat that utilizes vacuum steam to condense to discharge heats the water in recycling can (or being called jet media), the temperature that has improved recycle-water (can reach 100 ℃ of left and right usually under normal pressure, usually can reach 120 ℃ of left and right after the high-pressure service pump pressurization), effectively reduced the heat that the water of condensation that enters Multi-stage heating device or oxygen-eliminating device is heated to the required absorption of saturation temperature again, realized the recycling to the water resources in vacuum steam and heat energy, reached the purpose of energy saving and protection of the environment, return simultaneously enterprise and brought direct economic benefit.
Description of drawings
Fig. 1 is the vacuum steam reclaiming system schematic diagram of prior art;
Fig. 2 is steam turbine vacuum stripping temperature pressure-raising reclaiming system structural representation of the present invention;
Fig. 3 is the structural representation of one-level Jet injector of the present invention;
Fig. 4 is secondary jets pump structure schematic diagram of the present invention;
Fig. 5 is another kind of secondary jets pump structure schematic diagram of the present invention.
Embodiment
For clearer explanation the present invention, in order to better understand the present invention, next the invention will be further described by embodiment by reference to the accompanying drawings.
referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the invention provides a kind of steam turbine vacuum stripping temperature pressure-raising reclaiming system, comprise vapour condenser 2, 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 the recycle-water pipeline 7 and the jet pipeline 8 that is used to form jet for draining, described jet pipeline is connected same main sewer or is connected independently of one another the outlet area of described recycling can with the recycle-water device for cleaning pipeline, 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, described one-level Jet injector is connected jet inlet and is connected outlet pipe and/or the described jet pipeline of described vapour condenser by pipeline with the secondary jets pump, the suction entrance of described one-level Jet injector connects the exhaust steam pipe of described vapour condenser, be used for the vacuum steam in described vapour condenser is aspirated into described one-level Jet injector, the suction entrance of described secondary jets pump connects described one-level jet delivery side of pump, be used for the one-level Jet injector is aspirated into described secondary jets with jet media mixing final vacuum vapour being pumped into recycling can, realize the recovery of the heat energy of vacuum steam, described secondary jets delivery side of pump connects the entrance of described recycling can, the entrance 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, for increasing the pressure in pipeline, pressure in described one-level Jet injector jet pipeline preferably is not less than 0.5MPa, be beneficial to the suction of vacuum steam and keeping of degree of vacuum.In order to realize better the operation of native system, can on the outlet pipe of described vapour condenser, stop valve be set, with the convenient whereabouts of controlling the pipeline medium.
In order to improve the overall operation efficiency of system, the preferred multi-stage multi-pipe Jet injector of described secondary jets pump guarantees that recycling can is sent in exhaust steam (liquid-vapor mixture) and form 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 consists of the entrance 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 effectively increase the jet pump head under large flow.
Preferably, the quantity of described secondary jets pipe is a plurality of, and its outlet balancedly is distributed on a cross section of secondary jets pump, and the less defective of flow that can aspirate to overcome single jet pipe guarantees the effective use under large 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 Rotational Symmetry distributes, the entrance of each pumping tube consists of the suction entrance of described secondary jets pump, the entrance 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 to downward-extension, outlet section 62 is the straight tube along pump housing axial direction, the quantity of described pumping tube is generally a plurality of, and distribute along even circumferential on sustained height, can be also one in the situation that suction flow is less.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, within its outlet is positioned at the outlet end of described pumping tube.The described pumping tube that at first MEDIA FLOW 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, form negative pressure in pumping tube, make and be sucked medium and flow forward under the effect of this negative pressure, jet mixing with the ejaculation of one-level jet pipe, 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 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 consists of the suction entrance of described secondary jets pump, both facilitated thus the secondary jets pump with the connection of relevant pipeline, 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 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 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 be its outlet (being the outlet of one-level jet media) in the end, the one-level jet media outwards sprays from this outlet, form 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 in the pump housing of described secondary jets pump MEDIA FLOW 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 straight tube-like identical with the axial direction of the pump housing of described secondary jets pump after bending, and be provided with the secondary jets media outlet in the end, described secondary jets media outlet can be arranged to taper mouth, in order to form better required jet, 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 suction from the top down, obtain better suction effect with the potential energy that utilizes medium, particularly in commercial Application, due to exhaust steam and the mixed medium flow very large, therefore the height of Jet injector often has several meters even higher, can improve significantly the jet pump head thus, significantly saves power consumption.
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 a 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 more effectively carry out supercharging to the medium that is sucked from described one-level Jet injector, make and be sucked medium and can more successfully enter recycling can.
the pumping tube of described secondary jets pump is arranged to equally distributed a plurality of pipeline, the MEDIA FLOW of large flow can be decomposed into the MEDIA FLOW of a plurality of relative small flows, carry out respectively the suction supercharging of one-level jet pipe in each pumping tube, the suction flow that has solved thus common Jet injector is little, can't be the defective of large flow medium supercharging, effectively realized the supercharging of large flow MEDIA FLOW, the pressurization by the secondary jets pipe in the pump housing simultaneously, formed stable and reliable supercharging MEDIA FLOW, be conducive to improve the pump housing of secondary jets pump and the MEDIA FLOW state in recycling can, guarantee that MEDIA FLOW successfully enters in 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 consists of 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 the extension 53 coaxial with described one-level Jet injector jet pipeline, described extension is positioned on a cross section of the described pump housing, radial direction along the pump housing is extended, end-enclosed or be 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 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 Extension directions 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, to carry out even pressure in described extension and cross pipe, 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, in order to form better jet.
By the setting of this a plurality of jet orifices, formed the multiple jets of equiblibrium mass distribution in the pump housing of one-level Jet injector, form negative pressure region on whole medium channel, drive from the exhaust steam of pump housing entrance point and flow forward.This pipe type Jet injector particularly is adapted in big-diameter pipeline to drive the media flow of large flow, has overcome that existing common Jet injector is little because of the rate-of flow of suction, power consumption is difficult to solve greatly the defective of air flowability under big-diameter pipeline.
In general, the pressurization difficulty of vacuum steam, and in turbine system, the caliber of the exhaust steam pipe of vacuum steam is all about 1m～2m, because its too small transmission of vacuum steam pressure of transmitting is comparatively difficult, the setting of one-level Jet injector, effectively improved vacuum steam flowing velocity in outlet pipe, solved vacuum steam in transporting pipeline due to caliber the large and low technical problem that is difficult to reclaim that causes of vacuum steam pressure, also can be simultaneously the secondary jets pump provide pressure relatively high be sucked medium, help to improve the suction effect of secondary jets pump.In general, vacuum steam temperature in the exhaust steam pipe of described vapour condenser is 30 ℃～50 ℃ left and right, after suction through the one-level Jet injector, it is 40 ℃～70 ℃ left and right that the mixed medium temperature in described suction channel can raise usually, and temperature and the pressure of vacuum steam all increase.
Described recycling can is preferably vertical recycling can, its vertical dimension is greater than its transverse dimension, described recycling can is air-tight state, its inner gaseous pressure is a standard atmospheric pressure, be beneficial to the secondary jets pump in the recycling can medium transport and recycling can in the condensing of vacuum steam, its inner condensing water temperature 100 ℃ of left and right.
According to different real work situations, vacuum steam discharge capacity as vacuum steam 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 setting one by one, adopt mode in parallel jointly water resources and the heat energy of vacuum steam to be carried out recycling.The recycle-water pipeline of some described recycling cans can connect respectively described water of condensation and reclaim the source, also can connect same main recycle-water pipeline, described main drainage pipeline connects described water of condensation and reclaims the source, when adopting this kind to arrange, 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 arranged on respectively the top of described recycling can, the non-condensible gas that can not form water of condensation regularly can be discharged by described outlet valve, in order to avoid take too much the space of described recycling can, described safety valve can be in described recycling can internal pressure over releasing pressure automatically after certain limit, to guarantee pressure stability and the security of system operation in recycling can.The outlet of described recycling can preferably is arranged on the bottom of described recycling can, guarantee thus from the outlet of described recycling can out be all water of condensation, condensing water temperature through recycle-water pipeline pressurization output can reach 80 ℃～120 ℃, more be conducive to the secondary utilization, the quantity of described High Pressure Drain pump can be two of the using and the reserved, also can be for multiplex one standby a plurality of.
All can be provided with suitable valve on each pipeline involved in the present invention, control with convenient the realization, can also according to pressure gauge need to be set, regulate with the pressure according to its demonstration.
The diameter of each pipeline involved in the present invention can be according to size and the suitable selection of requirement of engineering of Jet injector and recycling can, described each pipeline can adopt equal pipe, with convenient processing, can at least one be also equal pipe not, with flow velocity and the resistance requirement that adapts to diverse location.Can adopt welding between described each pipeline and between each pipeline and 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 (7)
1. steam turbine vacuum stripping temperature pressure-raising reclaiming system, comprise vapour condenser, characterized by further 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 is connected same main sewer or is connected independently of one another the water storage zone of described recycling can with the recycle-water device for cleaning pipeline, 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, described one-level Jet injector is connected jet inlet and is connected outlet pipe and/or the described jet pipeline of described vapour condenser by pipeline with the secondary jets pump, the suction entrance of described one-level Jet injector connects the exhaust steam pipe of described vapour condenser, the suction entrance of described secondary jets pump connects described one-level jet delivery side of pump, described secondary jets delivery side of pump connects the entrance of described recycling can, described one-level Jet injector is the pipe type Jet injector, described secondary jets pump is the Multi-stage jet pump, 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 consists of 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 entrance of described secondary jets pump, 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 is one or more, when the quantity of described one-level jet pipe is a plurality of, the suction entrance of described secondary jets pump is divided into multichannel, the MEDIA FLOW supercharging that each described one-level jet pipe enters for the suction entrance from a road described secondary jets pump corresponding with it, when the quantity of described secondary jets pipe is a plurality of, the outlet of described a plurality of secondary jets pipes balancedly is distributed on a cross section of the medium channel in the pump housing of described secondary jets pump.
2. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 1, 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 Rotational Symmetry distributes, the entrance of each pumping tube consists of the suction entrance 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 straight tube-like identical with the axial direction of 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, its jet jeting area is along the axial whole cross section that is expanded to gradually in described pumping tube of pumping tube.
3. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 1, 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 consists of the suction entrance of described secondary jets pump, described one-level jet pipe penetrates 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 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 straight tube-like identical with the axial direction of the pump housing of described secondary jets pump after bending, the outlet of described secondary jets pipe is positioned at the jeting area of the outlet of described one-level jet pipe.
4. as claim 1, 2 or 3 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 consists of the suction entrance 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 Extension direction of the described pump housing.
5. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 4, 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 the extension coaxial with 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.
6. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 5, it is characterized in that described recycling can also is provided with safety valve and outlet valve, described safety valve and outlet valve are arranged on respectively the top of described recycling can, the water of condensation outlet that is used for connecting the jet pipeline in described main sewer or the described water storage zone that connects independently of one another described recycling can and recycle-water pipeline on described recycling can is arranged on the bottom of described recycling can, and the quantity of described High Pressure Drain pump is two of the using and the reserved or multiplex one standby a plurality of.
7. steam turbine vacuum stripping temperature pressure-raising reclaiming system as claimed in claim 6, is characterized in that the quantity of described recycling can is several, and the quantity of described one-level Jet injector and secondary jets pump is identical with the quantity of described recycling can, and setting corresponding to one one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110062970 CN102162377B (en) | 2011-03-16 | 2011-03-16 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110062970 CN102162377B (en) | 2011-03-16 | 2011-03-16 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
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| Publication Number | Publication Date |
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| CN102162377A CN102162377A (en) | 2011-08-24 |
| CN102162377B true CN102162377B (en) | 2013-11-06 |
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| CN 201110062970 Expired - Fee Related CN102162377B (en) | 2011-03-16 | 2011-03-16 | System for reclaiming vacuum steam after temperature rise and pressure rise of steam turbine |
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| CN202073608U (en) * | 2011-03-16 | 2011-12-14 | 李树生 | Heating-up and pressure-boosting system for vacuum steam of steam turbine |
Citations (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 |
| CN200964876Y (en) * | 2006-10-16 | 2007-10-24 | 李树生 | Low pressure condensed water reclamation system |
| CN101334241A (en) * | 2008-08-01 | 2008-12-31 | 李树生 | Vacuum waste steam reclamation and utilization system |
| CN101344245A (en) * | 2008-08-22 | 2009-01-14 | 李树生 | Vapor recovery system |
| CN101644176A (en) * | 2009-05-31 | 2010-02-10 | 北京凝汽动力技术有限公司 | Vacuum steam recovery device for steam turbine |
| CN202073608U (en) * | 2011-03-16 | 2011-12-14 | 李树生 | Heating-up and pressure-boosting system for vacuum steam of steam turbine |
-
2011
- 2011-03-16 CN CN 201110062970 patent/CN102162377B/en not_active Expired - Fee Related
Patent Citations (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 |
| CN200964876Y (en) * | 2006-10-16 | 2007-10-24 | 李树生 | Low pressure condensed water reclamation system |
| CN101334241A (en) * | 2008-08-01 | 2008-12-31 | 李树生 | Vacuum waste steam reclamation and utilization system |
| CN101344245A (en) * | 2008-08-22 | 2009-01-14 | 李树生 | Vapor recovery system |
| CN101644176A (en) * | 2009-05-31 | 2010-02-10 | 北京凝汽动力技术有限公司 | Vacuum steam recovery device for steam turbine |
| CN202073608U (en) * | 2011-03-16 | 2011-12-14 | 李树生 | Heating-up and pressure-boosting system for vacuum steam of steam turbine |
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| CN102162377A (en) | 2011-08-24 |
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