CN102146813B - Waste steam heating, pressurizing and recycling system - Google Patents

Waste steam heating, pressurizing and recycling system Download PDF

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CN102146813B
CN102146813B CN 201110062966 CN201110062966A CN102146813B CN 102146813 B CN102146813 B CN 102146813B CN 201110062966 CN201110062966 CN 201110062966 CN 201110062966 A CN201110062966 A CN 201110062966A CN 102146813 B CN102146813 B CN 102146813B
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jet
pump
secondary jets
pipe
pump housing
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CN102146813A (en
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李树生
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Abstract

The invention relates to a waste steam heating, pressurizing and recycling system which comprises a recycling tank, a primary jet pump and a secondary jet pump, wherein the recycling tank is a horizontal recycling tank, the top of the recycling tank is provided with a high-pressure steam outlet, the recycling tank is provided with a jet pipeline, a high-pressure draining pump is arranged on the jet pipeline, a jet inlet of the primary jet pump and a jet inlet of the secondary jet pump are connected with the jet pipeline, an outlet of the secondary jet pump is connected with an inlet of the recycling tank, a suction inlet of the secondary jet pump is connected with an outlet of the primary jet pump, a suction inlet of the primary jet pump is connected with an exhaust steam source through a low-pressure exhaust steam pipeline, and the high-pressure steam outlet is connected with a high-pressure steam recycling pipeline. The waste steam heating, pressurizing and recycling system disclosed by the invention is beneficial to solution to the problems of recycling difficulty caused by too low pressure of exhaust steam and pressurizing difficulty in the prior art and has the capability of effectively pressurizing the low-pressure exhaust steam, and the pressurized steam can be suitable for various occasions and especially suitable for occasions with high pressure requirements.

Description

Waste vapour temperature raising pressure-raising reclaiming system
Technical field
The present invention relates to a kind of exhaust steam pressurization system, be used for recycling after exhaust steam temperature raising pressure-raising.
Background technique
High temperature and high pressure steam is completed in heat engine in the exhaust steam that forms after acting and is contained a large amount of heat energy toward contact, in order to reduce energy waste, people wish these heat energy is recycled, but the lower and pressurization difficulty due to the pressure of exhaust steam, the occasion that therefore can be suitable for aborning is less, therefore the heat energy that has exhaust steam greatly and wherein contain finally all directly is disposed in atmosphere, has not only wasted a large amount of heat energy, and has easily caused the thermo-pollution of environment.
Summary of the invention
In order to overcome the defects of prior art, the object of the present invention is to provide a kind of waste vapour temperature raising pressure-raising reclaiming system, can carry out effective supercharging to the low pressure exhaust steam, make the applicable multiple occasion of high pressure vapour after supercharging, be particularly useful for the higher occasion of pressure demand.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is:
a kind of waste vapour temperature raising pressure-raising reclaiming system, comprise recycling can, one-level Jet injector and secondary jets pump, described recycling can adopt various suitable forms, be preferably horizontal recycling can, the top is provided with the high pressure vapor outlet, described recycling can is provided with the jet pipeline, described jet pipeline is provided with the High Pressure Drain pump, described one-level Jet injector is connected jet inlet and is connected described jet pipeline with the secondary jets pump, described secondary jets delivery side of pump connects the entrance of described recycling can, the suction entrance of described secondary jets pump connects described one-level jet delivery side of pump, the suction entrance of described one-level Jet injector is by low pressure exhaust steam pipeline connection exhaust steam source, described high pressure vapor outlet connects high pressure vapour reuse pipeline.
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, 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 entrance of described secondary jets pump can be divided into multichannel, the medium 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 when being a plurality of, the outlet of described a plurality of secondary jets pipes can balancedly be distributed on medium channel cross section in the pump housing of described secondary jets pump.
preferably, the main body of the pump housing of 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 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 import 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.
Described one-level Jet injector generally includes the pump housing and jet pipe, the main body of its pump housing 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 jet pipe 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 jet pipe extension coaxial with described jet pipe, described jet pipe 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 jetburners or jet injection pipe on body, the jet injection direction of described jet jetburner and jet injection pipe is towards the Axis Extension direction of the described pump housing, described each jet jetburner or the preferred equiblibrium mass distribution of jet injection pipe.
Can also be provided with the moisturizing entrance on described recycling can, described moisturizing entrance is by moisturizing pipeline connection moisturizing water source, described High Pressure Drain pump can also directly connect or connect drainage pipe by described jet pipe, preferably be provided with the draining control valve door on described drainage pipe, described recycling can be provided with for the sensing device that gathers its water level signal, the signal output part of described sensing device is connected with drain control unit, and the control signal output terminal of described drain control unit connects the control circuit of described draining control valve door.
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 of described recycling can preferably is arranged on the bottom of described recycling can, connect the import of described High Pressure Drain pump, preferably two of the using and the reserved or multiplex one standby a plurality of of the quantity of described high-pressure service pump.
Various valves described in technique scheme are preferably mortor operated valve, and described mortor operated valve can open and close by automatic and/or manual mode.
The invention has the beneficial effects as follows:
1, because recycling can of the present invention adopts horizontal setting, contact and the separating area of vapour-liquid two-phase have been increased, both be conducive to improve the separation effect of two-phase, guaranteed that again jet and the recycling can of secondary jets pump in the recycling can carries out simultaneously by the high pressure vapour output in described high steam pressing tube road, improved the operational efficiency of system, be simultaneously high pressure conditions in recycling can, the pressure that has guaranteed the high pressure vapour exported through high steam pressing tube road can satisfy the demand of transporting and using in pipeline.
particularly because the present invention has adopted the cooperation of mutually connecting of the two stage jet pump of different structure, solve the air flowability problem of big-diameter pipeline by the one-level Jet injector, solved medium supercharging problem by the secondary jets pump, overcome thus the technical problem that is difficult to large flow medium is sent into the closed container with elevated pressures 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 supercharging amplitude equate, power consumption reduces approximately 35%.
2, the introducing of the one-level Jet injector of pipe type, effectively improved the low pressure exhaust steam in the ducted flowing velocity of low pressure exhaust steam, namely improved the delivery volume of exhaust steam, for recycling can provides enough exhaust steam, guaranteed that the gaseous pressure in recycling can reach the needed sufficiently high pressure of recovery, effectively improved the reuse efficiency of low pressure exhaust steam, reduced the difficulty that reclaims, 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, after the supercharging of low pressure exhaust steam process one-level Jet injector, its pressure increases, 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 one-level jet delivery side of pump, guarantee the jet of high flow capacity, make to be sucked medium and can more successfully to enter recycling can.
4, because adopting vertical Jet injector, described secondary jets pump is arranged at the top of recycling can, MEDIA FLOW in the secondary jets pump is to vertically downward, and 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, be provided with the control valve, safety valve, pressure gauge etc. of sensing device, drain control unit, draining control valve, the output high pressure vapour of moisturizing pipeline, water level signal due to the present invention, effectively realized system automatically, safety, efficient, operation continuously.
Description of drawings
Fig. 1 is the structural representation of waste vapour temperature raising pressure-raising reclaiming system of the present invention;
Fig. 2 is secondary jets pump structure schematic diagram of the present invention;
Fig. 3 is another kind of secondary jets pump structure schematic diagram of the present invention;
Fig. 4 is the structural representation of one-level Jet injector 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. 1, Fig. 2, Fig. 3 and Fig. 4, the invention provides a kind of waste vapour temperature raising pressure-raising reclaiming system, comprise one-level Jet injector 1 and secondary jets pump 2 and the recycling can 3 carried for to low pressure exhaust steam supercharging, realize vapor-liquid separation by the fluid that the firsts and seconds Jet injector is transported in recycling can in the tank of turning one's head, the bottom is liquid water, top is vapour and gas, described recycling can is preferably horizontal recycling can, so that for larger vapour is provided in recycling can, the surface of contact of liquid two-phase, improve separation effect, and larger cross-section area is conducive to also guarantee that the input output of recycling can carry out simultaneously, avoid top admission and the mutual interference mutually and the short circuit that go out vapour, the jet input that is the secondary jets pump in the recycling can and recycling can carry out simultaneously by the steam output in high steam pressing tube road.Usually should be in certain high pressure conditions in described recycling can, can reach the needed pressure of recovery with assurance through the pressure of the high pressure vapour of high steam pressing tube road recovery, the pressure in recycling can is preferably and is not less than 0.5MPa.
described recycling can is provided with entrance, water of condensation outlet and high pressure vapor outlet, the entrance of described recycling can preferably is arranged on the top of described recycling can, described high pressure vapor outlet preferably is located at the top of described recycling can, and separated by a distance in order to avoid be subject to the impact of ingress media flow with the entrance of described recycling can, the import of common described recycling can and outlet are separately positioned on the right and left of recycling can, form thus relatively independent entry zone and exit region in recycling can, jet output forms comparatively flowing and impact of torrent in entry zone, form comparatively stable liquid level at exit region, the vapour-liquid two-phase does not interfere with each other, can carry out simultaneously with the input of assurance vapour-liquid two-phase and the output of high pressure vapour, the high pressure vapor outlet can connect high pressure vapour reuse pipeline, so that the high pressure vapour after separating is recycled.
described water of condensation outlet can be connected with drainage pipe 13 and jet pipeline 12, preferably be provided with High Pressure Drain pump 8 on described jet pipeline, by the High Pressure Drain pump, water of condensation is carried out supercharging and be used for jet, to guarantee enough jet pressures, described High Pressure Drain pump can also directly or by described jet pipeline connect described drainage pipe, described drainage pipe can connect water, retaining or delivery equipment or pipe network, under the prerequisite of the needed enough jet media of suitable liquid level height and jet, unnecessary water of condensation is reclaimed in guaranteeing recycling can, described jet pipeline is connected with the jet inlet of described one-level Jet injector and secondary jets pump, think that it provides respectively suitable jet pressure, the jet pressure of described one-level Jet injector and secondary jets pump can be the same or different, and can regulate according to actual needs, to obtain best pressurized effect.
the suction entrance 102 of described one-level Jet injector can connect exhaust steam source 10 by low pressure exhaust steam pipeline, described exhaust steam source can be one or more exhaust steam exhaust apparatus or the pipeline in reality, it can be also concentrated conveyance conduit of exhaust steam etc., to realize the suction to the low pressure exhaust steam in exhaust steam source, exhaust steam pressure to be aspirated is not usually higher than 0.15MPa, described one-level jet delivery side of pump 103 connects the suction entrance 21 of described secondary jets pump, for providing, the secondary jets pump is sucked medium, mixed medium after the supercharging of one-level Jet injector is as the suction medium of secondary jets pump, more be conducive to improve the suction effect of secondary jets pump.
described secondary jets delivery side of pump 24 connects the entrance of described recycling can, for recycling can provides vapour-liquid two-phase mixed medium, the mixed medium that again pressurizes through the secondary jets pump enters the separation that the vapour-liquid two-phase is completed in recycling can inside, high pressure vapour after separation enters high steam pressing tube road through the high pressure vapor outlet and reclaims, some enters water of condensation after separation the jet pipeline from the outlet of described water of condensation and continues to provide jet as jet media for one-level Jet injector and secondary jets pump, unnecessary water of condensation is discharged by drainage pipe, with stablizing of the liquid level in the assurance recycling can and pressure.
waste vapour temperature raising pressure-raising reclaiming system of the present invention improves its pressure by one-level Jet injector and secondary jets pump to the supercharging step by step of low pressure exhaust steam, and be separated in recycling can, recycling can adopts horizontal setting, guaranteed the speed that vapour-liquid two is separated, and make input and output to carry out simultaneously, guaranteed the continuous operation of system, high pressure vapour after separating is delivered to equipment for reclaiming by high steam pressing tube road, realized the supercharging recycling to the low pressure exhaust steam, and adopt isolated liquid phase as jet media, supercharging to be carried out in exhaust steam, also saved the consumption of jet media, reduced the consumption of jet power.
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, 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. 2 has provided the embodiment of a 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 25, the external port 21 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 22 and secondary jets pipe 26, 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 23 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 27 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.
Fig. 3 provides the embodiment of another kind of secondary jets pump, the pump housing of this secondary jets pump adopts vertical tubular structure, the sidewall that its pumping tube 21 passes the pump housing extends in the pump housing, its part 25 that is positioned at the pump housing is bending to downward-extension, outlet section is the straight tube along pump housing axial direction, the quantity of described pumping tube is generally a plurality of, and distributes 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 22 and secondary jets pipe 26, 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.
By the mode of this two stage jet supercharging in the same pump housing, can greatly improve the secondary jets pump head, guaranteed the pressure in recycling can.and the pumping tube of secondary jets pump is being arranged to equally distributed a plurality of pipeline, the MEDIA FLOW of large flow is 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 the recycling can that is in high pressure conditions.
referring to Fig. 4, 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, its import consists of the suction inlet of one-level Jet injector, outlet all becomes one-level jet delivery side of pump, its jet pipe 101 vertically 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 jet pipe extension 104 coaxial with described jet pipe, described jet pipe 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 media outlets (jet jetburner or jet injection pipe), can be provided with one or several cross pipes that are communicated with it 106 on described extension, described cross pipe also evenly is provided with several jet media outlets, described each jet media outlet usually should be in described one-level Jet injector MEDIA FLOW to direction, be beneficial to reduce resistance, improve suction effect.
In order further to improve the suction effect of one-level Jet injector, in the jet media outlet of described extension or extension and cross pipe, injection pipe 105 is set, outwards spray described jet media by the outlet of described injection pipe.Described extension usually can be identical or similar with the internal diameter of described cross pipe, described injection pipe is not more than 1:5 usually with the internal diameter ratio of described extension or cross pipe, 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 injection 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 flowing state, minimizing turbulent flow and the power consumption of described low pressure exhaust steam.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 media outlets, 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, because low pressure exhaust steam relative pressure is lower, therefore its flow velocity is slower, the introducing of one-level Jet injector, effectively improved the low pressure exhaust steam in the ducted flowing velocity of low pressure exhaust steam, namely improved the delivery volume of exhaust steam, for recycling can provides enough exhaust steam, guaranteed that the gaseous pressure in recycling can reach the required sufficiently high pressure of recovery, improved simultaneously the reuse efficiency of low pressure exhaust steam, reduced the difficulty that reclaims, simultaneously for the secondary jets pump provide pressure relatively high be sucked medium, also help to improve the suction effect of secondary jets pump.
The outlet pressure in described high steam pressing tube road can be regulated according to actual needs, is preferably and is not less than 0.5MPa.
Can also be provided with the moisturizing entrance on described recycling can, connect the moisturizing water source by moisturizing pipeline 9, replenish liquid phase water according to actual needs in recycling can, for example, cause the low or jet media underpressure of the rate of departure of vapour-liquid two-phase or output high pressure steam pressure when not enough when water level in recycling can is too low, for in time replenishing liquid phase water in recycling can, guarantee the efficient operation of system.
in order to realize the automatic of system, efficiently, continuous operation, described drainage pipe can be provided with the draining control valve door, be preferably electric switching valve or pneumatic on-off valve, described recycling can is provided with for the sensing device 7 that gathers its water level signal, the signal output part of described sensing device connects a drain control unit 6, the control signal output terminal of described control gear connects the control circuit of described draining control valve door, described control gear can be according to default program or parameter work, in order to according to the water level in described recycling can, draining is controlled, water level in described recycling can is maintained in certain scope.
Described recycling can also be provided with safety valve and outlet valve, described safety valve and outlet valve can be arranged on respectively the top of described recycling can, the water of condensation outlet of described recycling can preferably is arranged on the bottom of described recycling can, connect the import of described High Pressure Drain pump, what guarantee to discharge from this outlet with this is all liquid phase, described High Pressure Drain pump can adopt the mode of the using and the reserved to arrange, as 8 and 8 ', also can adopt multiplex one standby mode to arrange, described High Pressure Drain delivery side of pump end preferably is provided with flow control switch.
All can be provided with suitable valve and pressure gauge on each pipeline involved in the present invention, control with convenient the realization.
When selecting self-acting valve such as mortor operated valve, described self-acting valve is preferably and can also opens and closes manually, so that select suitable control mode according to actual conditions, the efficient operation of assurance system, match with the automatic control system of the prior art automatic operation of the system that realizes of the system that can make described automatic control mode, manual mode can be as required adjust operation state at any time, operate more flexible.
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. waste vapour temperature raising pressure-raising reclaiming system, it is characterized in that comprising recycling can, one-level Jet injector and secondary jets pump, described recycling can is horizontal recycling can, its top is provided with the high pressure vapor outlet, described recycling can is provided with the jet pipeline, described jet pipeline is provided with the High Pressure Drain pump, described one-level Jet injector is connected jet inlet and is connected described jet pipeline with the secondary jets pump, described secondary jets delivery side of pump connects the entrance of described recycling can, the suction entrance of described secondary jets pump connects described one-level jet delivery side of pump, the suction entrance of described one-level Jet injector is by low pressure exhaust steam pipeline connection exhaust steam source, described high pressure vapor outlet connects high pressure vapour reuse pipeline, 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. waste vapour temperature raising 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.
3. waste vapour temperature raising 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 import 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.
4. as claim 1, 2 or 3 described waste vapour temperature raising pressure-raising reclaiming systems, it is characterized in that described one-level Jet injector comprises the pump housing and jet pipe, the main body of its pump housing 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. waste vapour temperature raising pressure-raising reclaiming system as claimed in claim 4, it is characterized in that described jet pipe 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 jet pipe extension coaxial with described jet pipe, described jet pipe 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, body is provided with a plurality of jet jetburners or jet injection pipe, the jet injection direction of described jet jetburner and jet injection pipe is towards the Axis Extension direction of the described pump housing, described each jet jetburner or jet injection pipe equiblibrium mass distribution.
6. waste vapour temperature raising pressure-raising reclaiming system as claimed in claim 5, it is characterized in that also being provided with on described recycling can the moisturizing entrance, described moisturizing entrance is by moisturizing pipeline connection moisturizing water source, described High Pressure Drain pump also directly connects or connects drainage pipe by described jet pipeline, described drainage pipe is provided with the draining control valve door, described recycling can is provided with for the sensing device that gathers its water level signal, the signal output part of described sensing device is connected with drain control unit, the control signal output terminal of described drain control unit connects the control circuit of described draining control valve door.
7. waste vapour temperature raising pressure-raising reclaiming system as claimed in claim 6, 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 of described recycling can is arranged on the bottom of described recycling can, connect the import of described High Pressure Drain pump, the quantity of described High Pressure Drain pump is two of the using and the reserved or multiplex one standby a plurality of.
CN 201110062966 2011-03-16 2011-03-16 Waste steam heating, pressurizing and recycling system Expired - Fee Related CN102146813B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201982149U (en) * 2011-03-16 2011-09-21 李树生 Recycling system of exhaust steam by increasing temperature and pressure
CN103790658B (en) * 2014-02-26 2015-04-08 刘朋云 Dual-element combined heat pump power generation system
CN105909567B (en) * 2016-06-15 2018-08-21 江苏大学 A kind of ejector improving jet-type centrifugal pump cavitation performance

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CN101344245A (en) * 2008-08-22 2009-01-14 李树生 Vapor recovery system
CN101644177A (en) * 2009-05-31 2010-02-10 北京凝汽动力技术有限公司 Dead steam reuse 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
CN101886850A (en) * 2010-07-19 2010-11-17 李树生 Low-temperature steam exhaust recovery device
CN201982149U (en) * 2011-03-16 2011-09-21 李树生 Recycling system of exhaust steam by increasing temperature and pressure

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Publication number Priority date Publication date Assignee Title
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
CN101644177A (en) * 2009-05-31 2010-02-10 北京凝汽动力技术有限公司 Dead steam reuse 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
CN101886850A (en) * 2010-07-19 2010-11-17 李树生 Low-temperature steam exhaust recovery device
CN201982149U (en) * 2011-03-16 2011-09-21 李树生 Recycling system of exhaust steam by increasing temperature and pressure

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