CN201461559U - Adjustable multiflow steam jet heat pump - Google Patents
Adjustable multiflow steam jet heat pump Download PDFInfo
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- CN201461559U CN201461559U CN200920104066XU CN200920104066U CN201461559U CN 201461559 U CN201461559 U CN 201461559U CN 200920104066X U CN200920104066X U CN 200920104066XU CN 200920104066 U CN200920104066 U CN 200920104066U CN 201461559 U CN201461559 U CN 201461559U
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Abstract
The utility model relates to an adjustable multiflow steam jet heat pump, wherein one or more conical winding nozzles whose nozzle holes are in ring shapes are coaxially fixedly sleeved on the outer side of a conical center nozzle arranged on the center of a pump body, the nozzle hole of the center nozzle is on the uppermost end, and is arrayed in a step shape with the ring-shaped nozzle holes which surround the nozzles, work steam inlets are respectively arranged around the nozzles, an ejection steam inlet is arranged on the lateral wall of the pump body, the front of the pump body and the outer cavity of the nozzle holes are steam mixing chambers, and the outer end is connected with the small hole end of a diffusion pipe. Work steam is ejected out from the center nozzle hole in high speed, other strands of work steam are ejected out from the nozzle holes of the surrounded nozzles, a plurality of strands of work steam form a certain speed distributing place to commonly work, thereby reducing the pressure intensity at the nozzle hole, ejection steam is sucked in, and ejection flow whose velocity gradient can be adjusted is generated through the mixing of the steam mixing chamber and the speed reduction and boosting of the diffusion pipe, thereby effectively lowering the flow impact loss on the front end of the nozzle holes, lowering energy loss, and improving mechanical efficiency.
Description
Technical field
The utility model relates to a kind of steam jet heat pump, and the adjustable multi-streaming type steam jet heat pump especially for improving the steam grade belongs to technical field of chemical.
Background technique
In industrial production chemical production field particularly, steam jet heat pump is an equipment commonly used, its working principle is to utilize the high-grade steam source as working steam, low-grade steam source is as jetting steam caused, working steam quickens to form high-speed jet in nozzle, produce local depression and suck jetting steam caused, after mixing, deceleration supercharging, discharge the back pressure steam source of grade between high-grade steam source and low-grade steam source from sparger, realize the second use of low-grade steam source, reach purpose of energy saving.Steam jet heat pump is simple and reliable for structure because of it, running expense is cheap is used widely at industrial process, as unit processes such as vacuum system, refrigeration cycle, evaporation, rectifying, crystallizations.The principal element that influences the steam jet heat pump service behaviour has two aspects: the one, and the operation operating mode; The 2nd, structural parameter.The former comprises working steam pressure, jetting steam caused pressure and back pressure steam pressure etc., and the latter comprises that nozzle arrangements, jet expansion are apart from parameters such as mixing chamber inlet distance, diffusion tube lengths, diffusing tube tapering, nozzle area ratios.The mechanical efficiency of heat pump is generally by mass ratio of induced-to-inducing air reflection, and mass ratio of induced-to-inducing air is meant that the unit mass working steam can introduce jetting steam caused nucleon number.CN2459088 discloses a kind of at the gas compressing equipment that obtains high vacuum.Have the air-blast atomizer that steam chest is communicated with it, and taken out the mixing chamber that medium is communicated with, be provided with two and above nozzle one diffuser pipe branch road parallel connection and carry out steam jet; CN218809 discloses a kind of steam heat pump with rotatable nozzle impeller, when work nozzle impeller rotary-jet form ejection field, the strong pumped gas that entrainments makes working efficiency significantly improve than old-fashioned jet pump; CN2700569 discloses a kind of adjustable multiinjector vapor pressure adapter that is used for steam turbine, it is characterized in that in housing, being provided with 2 above spargers, each sparger is to be made of nozzle and corresponding mixing chamber thereof, diffuser, and each nozzle is provided with modulating valve and regulates nozzle flow.Conventional art is owing to high-grade steam in mixing chamber directly contacts with low-grade steam, and both energy level difference are very big, and directly contact causes than the great machinery collision, cause mechanical power loss, so heat pump efficiency is lower, and its mass ratio of induced-to-inducing air is generally between 0.2～1.2.
Summary of the invention
The purpose of this utility model is to provide the adjustable multi-streaming type steam jet heat pump that a kind of energy loss is few, mass ratio of induced-to-inducing air is high.
The technical solution adopted in the utility model is such: a kind of adjustable multi-streaming type steam jet heat pump, comprise the pump housing in the structure, the cone barrel type central nozzle outer end that is positioned at pump housing center is provided with the working steam import, the cone barrel type of bottom sealing that is fixed with one and above quantity at the outside of cone barrel type central nozzle coaxial package is around nozzle, two-phase is faced around in the nozzle, constitute vapor chamber between the outer tube wall, nozzle around nozzle is the ring nozzle mouth, the central nozzle mouth of central nozzle is ladder with the ring nozzle mouth around nozzle that is looped around the central nozzle outside to be arranged, and the central nozzle mouth of central nozzle is at top.Each is respectively equipped with the working steam import around nozzle, pump housing sidewall is provided with jetting steam caused import, pump housing front portion, promptly central nozzle, be the vapor mixing chamber around the nozzle outboard chambers of nozzle, the outer end of vapor mixing chamber joins with the osculum end of the diffusing tube that has tapering and is communicated with.
Described adjustable multi-streaming type steam jet heat pump is characterized in that central nozzle outside coaxial package is fixed with 2～3 around nozzle.
Described adjustable multi-streaming type steam jet heat pump is characterized in said central nozzle, is circular, ellipse or rectangle around the nozzle cross section of nozzle.
For the ease of install making, described adjustable multi-streaming type steam jet heat pump, the pump housing is made of barrel-shaped housing and cone barrel type pumping hole, is connected for flange between barrel-shaped housing and cone barrel type pumping hole.
The said adjustable multi-streaming type steam jet heat pump of the utility model is divided into concentric multiply charging with working steam, form the steam awl that progressively reduces by the outside speed in center in mixing chamber central authorities, make that difference reduces between outermost speed of working steam and the jetting steam caused speed, thereby the reduction impact loss has improved the capacity usage ratio of working steam.Its working principle can be described below: by the working steam of central nozzle mouth ejection and the steam that sprays around nozzle, but during work because each strand working steam flow independent regulation, the momentum size is controlled respectively, and adjustable velocity gradient is arranged, thereby lowered the impact flow loss in nozzle forward position effectively, reduced fluid resistance, form a gas speed working steam awl from high to low from inside to outside, under the effect of this gas vertebra, the indoor formation low pressure area of vapor mixing, suck jetting steam caused, indoor jetting steam caused being accelerated of vapor mixing, finish momentum transfer with working steam and mix,, send satisfactory steam source by outlet behind the recovered energy through diffusing tube deceleration supercharging.
In the utility model, said central nozzle nozzle cross section can be circle, ellipse or rectangle according to actual needs; Adapt around nozzle nozzle cross section and central nozzle cross section, promptly can be circle, ellipse or rectangle according to actual needs equally.Central nozzle can adopt rotation to be threaded when installing around position between nozzle around nozzle and each and regulate the location.
In the utility model, said working steam import is a plurality of, and each working steam import can have independent steam source, and independent control also can be used same steam source, not independent control.
Owing to central nozzle with around between nozzle and respectively around threaded components or the flange and the gasket assembly that can supply adjusted position is housed between nozzle, relative position can be by rotation threaded adjustment or the adjustment of employing replacing flange gasket thickness.By to the adjusting of the pressure of each strand working steam, each is around the adjusting in the position of mixing chamber of the adjusting of the relative position of nozzle or nozzle, can guarantee that the steam heat pump works under optimum condition.
The beneficial effect that the utility model is obtained is: with heat pump comparison in the past, the utility model adopts the charging of working steam multiply, effectively reduced the heat pump internal mechanical loss of energy, improved heat pump efficiency, its outstanding sign can be expressed by the raising of heat pump mass ratio of induced-to-inducing air.
Description of drawings
Fig. 1 is structural representation of the present utility model (cut-away view).
The implication of each label representative is among the figure:
1, working steam import 2, central nozzle 3, around nozzle 4, around nozzle 5, working steam import 6, the pump housing 7, ring nozzle mouth 8, ring nozzle mouth 9, central nozzle mouth 10, diffusing tube 11, vapor mixing chamber 12, flange 13, pad 14, jetting steam caused import 15, working steam import.
Embodiment
The specific embodiment that provides below in conjunction with accompanying drawing and accompanying drawing is described further the utility model.
Example 1
As shown in Figure 1, a kind of adjustable multi-streaming type steam jet heat pump, comprise the pump housing 6 in the structure, the pump housing 6 is made of barrel-shaped housing and cone barrel type pumping hole, be connected by flange 12 between barrel-shaped housing and cone barrel type pumping hole, the centre is lined with pad 13, by changing the thickness of pad 13, can regulate the distance of mixing chamber outlet and nozzle. cone barrel type central nozzle 2 outer ends that are positioned at pump housing center are provided with working steam import 1, the cone barrel type of bottom sealing that is fixed with one and above quantity at the outside of cone barrel type central nozzle 2 coaxial package is around nozzle 3,4, commonly used is 2～3, central nozzle be threaded around adopting between nozzle around nozzle and each, be convenient to install, to regulate. two-phase is faced around in the nozzle, constitute vapor chamber between the outer tube wall, around nozzle 3,4 nozzle 8,7 for the ring nozzle mouth. the central nozzle mouth 9 of central nozzle 2 be looped around central nozzle 2 outsides around nozzle 3,4 ring nozzle mouth 8,7 stepped arrangements, and the central nozzle mouth 9 of central nozzle 2 is at top. around nozzle 3,4 are respectively equipped with working steam import 15, working steam import 5. pump housings 6 sidewalls are provided with jetting steam caused import 14. pump housings 6 front portions, central nozzle just, nozzle outboard chambers around nozzle becomes vapor mixing chamber 11, the outer end of vapor mixing chamber 11 is connected with the osculum end of the diffusing tube 10 that has tapering and communicates. in the present embodiment, and said central nozzle 2, around nozzle 3,4 nozzle cross section can be circular, ellipse or rectangle.
Embodiment 2
This embodiment is the use-case of adjustable multi-streaming type steam jet heat pump.Certain heat sensitive material aqueous solution evaporate concentration process, the technological requirement evaporating temperature must be lower than 95 ℃, adopts double effect evaporator, and the 1st effect degree of vacuum is 0.04MPa, and temperature of charge is 92 ℃, 88 ℃ of secondary steam temperature; The 2nd effect degree of vacuum is 0.095MPa, and temperature of charge is 80 ℃, 70 ℃ of secondary steam temperature.The 1st imitates the heating of employing 0.35MPa water vapor, and secondary steam heats thermal source as the 2nd single-effect evaporator after the steam jet heat pump supercharging.Adopt the utility model embodiment 1 described adjustable three flow pattern steam jet heat pumps, central nozzle working steam pressure is 0.35MPa, the first ring nozzle working steam pressure is 0.25MPa, the second ring nozzle working steam pressure is and is that 0.20Mpa, nozzle cross-section are circular, central nozzle and be threaded around adopting between nozzle, be convenient to regulate, the pump housing is made up of barrel-shaped housing and taper pumping hole, between connect the distance that can regulate mixing chamber outlet and nozzle by flange.Heat pump outlet back pressure is 0.11MPa.Mass ratio of induced-to-inducing air through surveying this heat pump can reach 1.33; Regulate nozzle sets in the position of mixing chamber and the relative position of nozzle sets, mass ratio of induced-to-inducing air also changes thereupon, and scope is 0.2-1.33.Use the utility model heat pump to realize this heat sensitive material low temperature double-effect evaporation, reach purpose of energy saving.
Claims (5)
1. adjustable multi-streaming type steam jet heat pump, comprise the pump housing (6) in the structure, be positioned at the cone barrel type central nozzle (2) at pump housing center, it is characterized in that there is working steam import (1) central nozzle (2) outer end, the cone barrel type of bottom sealing that is fixed with one and above quantity at the outside coaxial package of cone barrel type central nozzle (2) is around nozzle (3), (4), two-phase is faced around in the nozzle, constitute vapor chamber between the outer tube wall, around nozzle (3), (4) nozzle (8), (7) be the ring nozzle mouth, the central nozzle mouth (9) of central nozzle (2) be looped around central nozzle (2) outside around nozzle (3), (4) ring nozzle mouth (8), (7) being ladder arranges, the central nozzle mouth (9) of central nozzle (2) is at top, around nozzle (3), (4) be respectively equipped with working steam import (15), (5), pump housing sidewall is provided with jetting steam caused import (14), the pump housing (6) front portion, central nozzle, nozzle outboard chambers around nozzle is vapor mixing chamber (11), and the outer end of vapor mixing chamber (11) is communicated with the osculum end of the diffusing tube that has tapering (10).
2. adjustable multi-streaming type steam jet heat pump according to claim 1 is characterized in that central nozzle (2) outside coaxial package is fixed with 2～3 around nozzle.
3. adjustable multi-streaming type steam jet heat pump according to claim 1 is characterized in that central nozzle and is threaded around adopting between nozzle around nozzle and each.
4. adjustable multi-streaming type steam jet heat pump according to claim 1 is characterized in that said central nozzle, is circular, ellipse or rectangle around the nozzle cross section of nozzle.
5. adjustable multi-streaming type steam jet heat pump according to claim 1 is characterized in that the pump housing (6) is made of barrel-shaped housing and cone barrel type pumping hole, is connected for flange between barrel-shaped housing and cone barrel type pumping hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920104066XU CN201461559U (en) | 2009-08-06 | 2009-08-06 | Adjustable multiflow steam jet heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920104066XU CN201461559U (en) | 2009-08-06 | 2009-08-06 | Adjustable multiflow steam jet heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461559U true CN201461559U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920104066XU Expired - Fee Related CN201461559U (en) | 2009-08-06 | 2009-08-06 | Adjustable multiflow steam jet heat pump |
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| CN (1) | CN201461559U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958817A (en) * | 2015-07-15 | 2015-10-07 | 深圳市安保科技有限公司 | Air and oxygen mixing device and method for respirator |
| CN113374741A (en) * | 2021-06-11 | 2021-09-10 | 郭孝国 | Radial jet injection device |
-
2009
- 2009-08-06 CN CN200920104066XU patent/CN201461559U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958817A (en) * | 2015-07-15 | 2015-10-07 | 深圳市安保科技有限公司 | Air and oxygen mixing device and method for respirator |
| CN113374741A (en) * | 2021-06-11 | 2021-09-10 | 郭孝国 | Radial jet injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20100806 |