CN102748331A - Steam jet compressor - Google Patents
Steam jet compressor Download PDFInfo
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- CN102748331A CN102748331A CN2012102529222A CN201210252922A CN102748331A CN 102748331 A CN102748331 A CN 102748331A CN 2012102529222 A CN2012102529222 A CN 2012102529222A CN 201210252922 A CN201210252922 A CN 201210252922A CN 102748331 A CN102748331 A CN 102748331A
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Abstract
The invention relates to a steam jet compressor which comprises an actuating mechanism, a valve stem, a nozzle and a jet pump body. The jet pump body is provided with a steam chamber, a steam suction cavity, an expansion hole, a steam inlet and a steam suction opening, the steam inlet is communicated with the steam chamber, the steam suction opening is communicated with the steam suction cavity, the nozzle is mounted in the steam suction cavity, an inlet end of the nozzle is communicated with the steam chamber, an outlet end of the nozzle is communicated with the steam suction cavity, the expansion hole is communicated with the steam suction cavity, one end of the valve stem is connected with the actuating mechanism, the other end of the valve stem is located in the nozzle, and the valve stem and the nozzle match with each other to enable the distance between a valve stem head of the valve stem and a throat of the nozzle to be adjustable. By the steam jet compressor, steam flow of the nozzle can be adjusted to enable both flow and pressure of steam jetted by the nozzle to be adjustable. The position of the valve steam can be adjusted according to steam suction quantity of the steam suction opening, so that the steam jetted by the nozzle is maintained at stable pressure to prevent equipment from being damaged by pressure fluctuation.
Description
Technical field
The present invention relates to a kind of steam-jet ejector, belong to the steam jet ejector technical field, this steam-jet ejector can be used to reclaim the secondary steam of multiple effect evaporator, also can be used for capturing tail vapour or reclaiming heat from industrial wastes from steam turbine.
Background technique
In sugar refinery, salinization factory, alkali factory, Alcohol Plant, lysine factory, Gourmet Powder Factory, propylene oxide factory and the phosphate fertilizer factory of industries such as light industry, chemical industry, chemical fertilizer; Every technology that multiple effect evaporation is arranged; As adopt the secondary steam that barometric condenser or water injection vacuum pump are found time and condensation is evaporated from solution, cause the heat serious waste.This device also can be used for capturing tail vapour and from industrial wastes, reclaiming heat from steam turbine.
Steam-jet ejector is the steam energy that utilizes elevated pressures, and the both vapor compression lower pressure arrives the medium pressure level, and medium steam can be used as the available energy, is used for miscellaneous equipment.Such steam-jet ejector mainly is used as power with water vapor, also is used for the compression of water vapor mostly.But say that in principle steam-jet ejector can use any steam to drive, and can transmit various steam.
Because the speed that steam-jet ejector transmits is very high, is easy to overcome huge steam flow.Structure is simple relatively, thereby acquisition expenses is cheap, long service life.Owing to there is not movable part, move very safe, and service free.
In view of these advantages, steam-jet ejector is widely used in drying, crystallization, concentrates, evaporates, distills, outgases.It is used for improving the pressure of waste steam, uses as available steam energy.
At some in order to practice thrift the occasion of steam; Especially have under the situation of fluctuation in bleed load and head pressure, because of the nozzle throat of compressor directly is unmodifiable, the steam flow that passes through can't be regulated; Bleeding load during less than nominal situation; Steam flow through nozzle throat does not reduce, and the mixed outlet pressure of compressor is higher, has caused the waste of part power steam simultaneously.
Publication number is the patent specification of CN101932820A, discloses a kind of suction jet pump.This suction jet pump is provided with a valve member, and this valve member and suction chamber match, and valve member and suction bole constitute suction valve.Shortcomings such as but this suction valve can only act on pump port, regulates the flow and the pressure of jet pump through the size of control intakeport, has the height of controlling cost, and control is inconvenient, and energy loss is big.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency that exists in the existing technology, and a kind of reasonable in design is provided, simple in structure; Easy to maintenance, safe and reliable, flexible operation; Control accuracy is high, the steam-jet ejector of the steam flow of the ejection of adjustable nozzles and the pressure of ejection steam.
The present invention addresses the above problem the technological scheme that is adopted: this steam-jet ejector is characterized in that: comprise actuator, valve rod, nozzle and jet pump body, said jet pump body is provided with vaporium, inhales vapour chamber, expanded bore, steam inlet and suction steam ports; Said steam inlet and vaporium are communicated with; Said suction steam ports is communicated with suction vapour chamber, and said nozzle is installed in to be inhaled in the vapour chamber, and the entry end of this nozzle is communicated with vaporium; The outlet end of this nozzle is communicated with suction vapour chamber; Said expanded bore is communicated with suction vapour chamber, and an end of said valve rod is connected with actuator, and the other end of this valve rod is positioned at nozzle; Said valve rod matches with nozzle, makes the distance of stem head and nozzle throat of valve rod adjustable.The distance of regulating valve stem head and nozzle throat can be regulated the steam actual internal area of nozzle, to regulate the steam flow and the pressure of nozzle.Steam-jet ejector
As preferably, the axis of valve rod according to the invention and the dead in line of nozzle.Make consistent apart from all directions between valve rod and the nozzle inner walls to make steam flow rate even, pressure distribution is even, makes that each radial force of valve rod is consistent, reduces vibration, increases working life.
As preferably, actuator according to the invention is a pneumatic actuator.Simple in structure, reliable, it is high to carry out precision.
As preferably, the present invention also comprises positioning work piece, and said positioning work piece is installed in the actuator.Positioning work piece can guarantee that valve rod can adjust to needed position automatically.
As preferably; The present invention also comprises link and plug screw; One end of said link is connected with actuator, and the other end of this link is connected with the jet pump body, is provided with axle sleeve and high temperature resistant graphite packing in the said link; Said valve stem casing is contained in the axle sleeve, and said plug screw is sleeved in the link.Make that actuator and jet pump body can be for convenience detach and install, improved the convenience of safeguarding.
As preferably; Jet pump body according to the invention comprises the admission body, inhales vapour body and expanding duct; Be provided with vaporium in the said admission body; Be provided with in the said suction vapour body and inhale the vapour chamber, be provided with expanded bore in the said expanding duct, said nozzle is installed between the flange of the flange of inhaling the vapour body and admission body.Make the jet pump body to transport back for convenience detach, if one of them parts has damaged these parts of only need changing to get final product, and do not need integral replacing jet pump body, the reduction maintenance cost has improved economic benefit.
The present invention compared with prior art has the following advantages and effect: steam-jet ejector of the present invention can be regulated the steam flow of nozzle, makes that the flow and the pressure of ejection steam of nozzle is all adjustable.Can make the steam of nozzle ejection maintain a pressure stable according to the position of the steam absorbing amount regulating valve stem of inhaling steam ports, prevent the pressure surge damage equipment.At the suction steam flow of inhaling steam ports hour, can regulating valve stem reduce the flow of the ejection steam of nozzle, to increase the pressure of ejection gas, reduce the flow that gets into steam from steam inlet, steam avoids waste.
Description of drawings
Fig. 1 is the structural representation of the steam-jet ejector of the embodiment of the invention.
Label declaration: actuator 1, valve rod 2, stem head 201, nozzle 3, nozzle throat 301, jet pump body 4, admission body 410 is inhaled vapour body 420, expanding duct 430, vaporium 6 is inhaled vapour chamber 7, expanded bore 8, steam inlet 9 is inhaled steam ports 10, link 12, plug screw 13.
Embodiment
Below in conjunction with accompanying drawing and through embodiment the present invention is done further detailed description, following examples are to explanation of the present invention and the present invention is not limited to following examples.
Embodiment.
As shown in Figure 1, the steam-jet ejector of present embodiment comprises actuator 1, valve rod 2, nozzle 3 and jet pump body 4.Jet pump body 4 is provided with vaporium 6, suction vapour chamber 7, expanded bore 8, steam inlet 9 and inhales steam ports 10, and steam inlet 9 is communicated with vaporium 6, inhales steam ports 10 and inhale vapour chamber 7 to be communicated with; Nozzle 3 is installed in to be inhaled in the vapour chamber 7, and the entry end of nozzle 3 is communicated with vaporium 6, and the outlet end of nozzle 3 is communicated with suction vapour chamber 7; Expanded bore 8 is communicated with suction vapour chamber 7; One end of valve rod 2 is connected with actuator 1, and the other end of valve rod 2 is positioned at nozzle 3, and valve rod 2 matches with nozzle 3.The stem head 201 of valve rod 2 and the distance of nozzle throat 301 are adjustable.
In the present embodiment, the dead in line of the axis of valve rod 2 and nozzle 3.Steam-jet ejector is provided with sleeve, and sleeve can guarantee the dead in line of the axis and the nozzle 3 of valve rod 2, makes that valve rod 2 radial forces are even, improves the working life of valve rod 2.
In the present embodiment, actuator 1 is a pneumatic actuator 1, and pneumatic actuator 1 can be the pneumatic actuator 1 of cylinder or other types.Among the present invention, actuator 1 can also be the actuator 1 of electric actuator 1 or other types.
In the present embodiment, positioning work piece is installed also in the actuator 1.
In the present embodiment; Steam-jet ejector also comprises link 12 and plug screw 13; One end of link 12 is connected with actuator 1, and the other end of link 12 is connected with jet pump body 4, is provided with axle sleeve and high temperature resistant graphite packing in the link 12; Valve rod 2 is sleeved in the axle sleeve, and plug screw 13 is sleeved in the link 12.
In the present embodiment; Jet pump body 4 comprises admission body 410, inhales vapour body 420 and expanding duct 430; Be provided with vaporium 6 in the admission body 410; Inhale to be provided with in the vapour body 420 and inhale vapour chamber 7, be provided with expanded bore 8 in the expanding duct 430, nozzle 3 is installed between the flange of the flange of inhaling vapour body 420 and admission body 410.
When steam-jet ejector of the present invention used, power steam got in the nozzles 3 from vaporium 6 in steam inlet 9 entering vaporiums 6 then, and power steam process nozzle throat 301 backs get into suction vapour chamber 7 from the outlet end of nozzle 3.Because the diameter of nozzle throat 301 is less, so power steam accelerates through nozzle throat 301 back flow velocitys, static pressure head diminishes, and makes that inhaling vapour chamber 7 presents parital vacuum.Inhale vapour chamber 7 and draw low pressure steam through inhaling steam ports 10, low pressure steam and power steam mix the back and get into expanded bore 8, and the mixed vapour flow velocity reduces in expanded bore 8, and static pressure head increases, and is convenient to the mixed vapour utilization.
In the steam-jet ejector using process, the user gets into the flow of inhaling steam ports 10 according to the pressure and the low pressure steam of low pressure steam, and control executing mechanism 1 makes actuator 1 move, and actuator 1 drives valve rod 2 actions.Because nozzle 3 inner chambers are cone-shaped structure, nozzle throat 301 physical dimensions and critical velocity are certain value.When the stem head on the valve rod 2 201 during near nozzle throat 301, the steam flow area between the internal chamber wall of stem head 201 and nozzle 3 diminishes, and makes that the power steam flow through nozzle throat 301 reduces, and the low pressure steam amount of absorption also reduces thereupon; On the contrary, when valve rod 2 during away from nozzle throat 301, it is big that the steam flow area becomes, and makes that the power steam flow through nozzle throat 301 increases, and the low pressure steam amount of absorption also increases thereupon.
Inhale the degree of vacuum in vapour chamber 7 and the pressure of the power steam that gets into steam inlet 9 through control, can regulate amount and the flow and the pressure of power steam and the mixed mixed vapour of low pressure steam of the low pressure steam of absorption easily.Make steam-jet ejector of the present invention can be applicable to the low pressure steam of different pressures and flow.
Above content described in this specification only is to illustrate what structure of the present invention was done.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Claims (6)
1. steam-jet ejector is characterized in that: comprise actuator, valve rod, nozzle and jet pump body, said jet pump body is provided with vaporium, inhales vapour chamber, expanded bore, steam inlet and suction steam ports; Said steam inlet and vaporium are communicated with; Said suction steam ports is communicated with suction vapour chamber, and said nozzle is installed in to be inhaled in the vapour chamber, and the entry end of this nozzle is communicated with vaporium; The outlet end of this nozzle is communicated with suction vapour chamber; Said expanded bore is communicated with suction vapour chamber, and an end of said valve rod is connected with actuator, and the other end of this valve rod is positioned at nozzle; Said valve rod matches with nozzle, makes the distance of stem head and nozzle throat of valve rod adjustable.
2. steam-jet ejector according to claim 1 is characterized in that: the axis of said valve rod and the dead in line of nozzle.
3. steam-jet ejector according to claim 1 and 2 is characterized in that: said actuator is a pneumatic actuator.
4. steam-jet ejector according to claim 1 and 2 is characterized in that: also comprise positioning work piece, said positioning work piece is installed in the actuator.
5. steam-jet ejector according to claim 1 and 2; It is characterized in that: also comprise link and plug screw; One end of said link is connected with actuator, and the other end of this link is connected with the jet pump body, is provided with axle sleeve and high temperature resistant graphite packing in the said link; Said valve stem casing is contained in the axle sleeve, and said plug screw is sleeved in the link.
6. steam-jet ejector according to claim 1 and 2; It is characterized in that: said jet pump body comprises the admission body, inhales vapour body and expanding duct; Be provided with vaporium in the said admission body; Be provided with in the said suction vapour body and inhale the vapour chamber, be provided with expanded bore in the said expanding duct, said nozzle is installed between the flange of the flange of inhaling the vapour body and admission body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102529222A CN102748331A (en) | 2012-07-20 | 2012-07-20 | Steam jet compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102529222A CN102748331A (en) | 2012-07-20 | 2012-07-20 | Steam jet compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748331A true CN102748331A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102529222A Pending CN102748331A (en) | 2012-07-20 | 2012-07-20 | Steam jet compressor |
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|---|---|
| CN (1) | CN102748331A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01196000A (en) * | 1988-02-01 | 1989-08-07 | Toshiba Corp | Steam injector |
| CN2177115Y (en) * | 1993-10-10 | 1994-09-14 | 贾明浦 | Adjustable ratio jet device |
| CN2547933Y (en) * | 2002-05-13 | 2003-04-30 | 赵永民 | Adjustable steam-injection heating pump |
| US20040089019A1 (en) * | 2002-10-25 | 2004-05-13 | Susumu Kawamura | Ejector having throttle variable nozzle and ejector cycle using the same |
| CN200943608Y (en) * | 2006-06-06 | 2007-09-05 | 阎尔平 | Adjustable injection type compressor |
| CN201705741U (en) * | 2010-05-28 | 2011-01-12 | 杜战奇 | Sprayer capable of adjusting the distance between a nozzle and a mixing chamber inlet and the nozzle critical section |
| CN202301222U (en) * | 2011-10-08 | 2012-07-04 | 杭州美亚发电设备有限公司 | Novel high-temperature and high-pressure steam ejector |
| CN202718937U (en) * | 2012-07-20 | 2013-02-06 | 杭州杭真真空工程技术有限公司 | Steam-jet compression device |
-
2012
- 2012-07-20 CN CN2012102529222A patent/CN102748331A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01196000A (en) * | 1988-02-01 | 1989-08-07 | Toshiba Corp | Steam injector |
| CN2177115Y (en) * | 1993-10-10 | 1994-09-14 | 贾明浦 | Adjustable ratio jet device |
| CN2547933Y (en) * | 2002-05-13 | 2003-04-30 | 赵永民 | Adjustable steam-injection heating pump |
| US20040089019A1 (en) * | 2002-10-25 | 2004-05-13 | Susumu Kawamura | Ejector having throttle variable nozzle and ejector cycle using the same |
| CN200943608Y (en) * | 2006-06-06 | 2007-09-05 | 阎尔平 | Adjustable injection type compressor |
| CN201705741U (en) * | 2010-05-28 | 2011-01-12 | 杜战奇 | Sprayer capable of adjusting the distance between a nozzle and a mixing chamber inlet and the nozzle critical section |
| CN202301222U (en) * | 2011-10-08 | 2012-07-04 | 杭州美亚发电设备有限公司 | Novel high-temperature and high-pressure steam ejector |
| CN202718937U (en) * | 2012-07-20 | 2013-02-06 | 杭州杭真真空工程技术有限公司 | Steam-jet compression device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |