CN2443314Y - Steam-liquid phase contact type efficient heat exchanger - Google Patents
Steam-liquid phase contact type efficient heat exchanger Download PDFInfo
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- CN2443314Y CN2443314Y CN00226806U CN00226806U CN2443314Y CN 2443314 Y CN2443314 Y CN 2443314Y CN 00226806 U CN00226806 U CN 00226806U CN 00226806 U CN00226806 U CN 00226806U CN 2443314 Y CN2443314 Y CN 2443314Y
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- pipeline
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- contracted channel
- steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model relates to a steam-liquid two phase contact type efficient heat exchanger, which comprises a steam nozzle communicated with a steam inlet pipeline, a cold water pipeline arranged out of the steam nozzle and communicated with a water inlet pipe or connected with the water inlet pipe as an entity and a mixing pipe having an inlet arranged out of an outlet of the steam nozzle and communicated with the steam nozzle and the cold water pipeline. The utility model also comprises a flow restrictor arranged between the cold water pipeline and the mixing pipe for adjusting the flow of cold water. The utility model having the advantages of simple structure, small size, low cost, wide ranges of load adaptation, low vibration and noise, high heat exchanger efficiency, etc. can be popularized and utilized in energy, dynamic force and chemical industries, etc.
Description
The utility model belongs to general technical field of heat exchange, and being specifically related to heat exchange medium is other direct contact heat switching equipment of a kind of liquid and a kind of gas or steam.
Vapour-liquid two-phase direct-contact heat exchanger have the heat exchange efficiency height, simple in structure, volume is little, advantage such as cheap, thereby has good application prospects in engineering.But the direct contact heat-exchanging device of existing vapour-liquid two-phase load variations scope is very little, and the parameter area of inlet steam and water is very narrow.If its operating mode is the off-design operating mode a little, can produce strong vibration, not only produce the strong noise of contaminated environment, also will cause pipe-line system strong water hammer to occur, the safe operation of harm heat-exchanger rig.This drawbacks limit applying of this heat exchanger.
The purpose of this utility model is to overcome the shortcoming of above-mentioned heat exchanger, provide a kind of simple in structure, volume is little, low price, load accommodation are wide, vibration and noise is little, heat exchange efficiency is high vapour-liquid two-phase contact type high-efficiency heat exchanger.
For achieving the above object, the solution that the utility model adopts comprises: with the steam jet that steam admission pipeline links, vapor stream is through this steam jet, and its speed reaches supersonic speed.Be arranged on the peripheral cold water pipes that joins or combine as a whole with the water inlet cross over pipe of steam jet.Inlet is arranged on the outer and mixing duct that link with steam jet and cold water pipes of steam jet outlet, and steam mixes in this mixing duct with cold water and carries out heat exchange.It also comprises the current limiter of the cold water the regulated flow that is arranged between cold water pipes and the mixing duct.
Steam jet of the present utility model is a Lavalle shape pipeline, and vapor stream reaches supersonic speed through its speed of the exit of this Lavalle shape pipeline.Mixing duct of the present utility model is a Lavalle shape pipeline, is provided with the weakening chamber at the converging portion of this Lavalle shape pipeline.
The converging portion of steam jet of the present utility model Lavalle shape pipeline is the pipeline that cylindrical pipe and throat's contracted channel kissing connect and link in same symmetrical plane, the diffuser pipeline that to be throat's divergent contour pipeline connect and link in same symmetrical plane with outlet divergent contour pipeline kissing, throat is the pipeline that the inlet kissing of the outlet of throat's contracted channel and throat's divergent contour pipeline connects and links in same symmetrical plane.
The axial length of steam jet of the present utility model Lavalle shape pipe outlet divergent contour pipeline is 2～10mm, and the angle of side and horizontal plane is 15 °～40 °.
The pipeline that the converging portion of mixing duct of the present utility model links in same symmetrical plane for enter the mouth contracted channel and throat's contracted channel, diffuser is the divergent contour pipeline, throat is the pipeline that the inlet kissing of the outlet of throat's contracted channel and divergent contour pipeline connects and links in same symmetrical plane, and the arrival end of converging portion and the port of export of diffuser are processed with chamfering.Weakening chamber in the utility model mixing duct is: the circumferencial direction at throat's contracted channel inwall is provided with a ring annular groove, but in the weakening hole that axially is provided with 4～8 circumference in equal parts and links with cannelure that enters the mouth the contracted channel inwall.
The axial length of mixing duct inlet contracted channel of the present utility model is 1/10～1/6 of a mixing duct length, the gradient of throat's contracted channel is 1: 30～1: 4, the gradient of inlet contracted channel is 1.5～2 times of the gradient of throat's contracted channel, and the gradient of divergent contour pipeline is that 1.5～2 times of the gradient of throat's contracted channel and direction are opposite.
The utility model is compared with vapour-liquid two-phase direct-contact heat exchanger, have simple in structure, volume is little, low price, load accommodation are wide, vibration and noise is little, the heat exchange efficiency advantages of higher, can promote the use of in industries such as the energy, power, chemical industry.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.
In Fig. 1,2, present embodiment is made of steam jet 2, cold water pipes 3, water inlet connecting tube 4, restrictor ring 5, mixing duct 6 connections, and restrictor ring 5 is an embodiment of current limiter.
Steam jet 2 is arranged in the cold water pipes 3, and the arrival end of steam jet 2 and jet chimney 1 link.The steam jet 2 of present embodiment is a Lavalle shape pipeline, and converging portion is connect and linked in same symmetrical plane by cylindrical pipe 15 and throat's contracted channel 14 kissings and constitutes.Diffuser is connect and links in same symmetrical plane with outlet divergent contour pipeline 12 kissings by throat's divergent contour pipeline 13 and constitutes, and throat is that the outlet of throat's contracted channel 14 and the inlet kissing of throat's divergent contour pipeline 13 are connected on the formation that links in the same symmetrical plane.The axial length of outlet divergent contour pipeline 12 is 2mm, and the angle of side and horizontal plane is 15 °.Steam enters steam jet 2 from jet chimney, reaches supersonic speed in the speed of the exit steam of Lavalle shape pipeline.
Cold water pipes 3 is installed in the periphery of steam jet 2, the outlet of steam jet 2 reaches outside the cold water pipes 3, the lateral wall that water inlet connecting tube 4 is arranged on cold water pipes 3 radially, be connected as a single entity and link with cold water pipes 3, water inlet connecting tube 4 links by pipeline and feed pipe, and cold water connects 4 from water inlet and enters cold water pipes 3.
The mixing duct 6 of present embodiment is a Lavalle shape pipeline, the contracted channel that converging portion links in same symmetrical plane for inlet contracted channel 7 and throat's contracted channel 10, the arrival end of inlet contracted channel 7 is processed the chamfering by 45 °, the gradient of inlet contracted channel 7 is 1: 2, axial length apart from the inlet end is 1/10 of a mixing duct axial length, and the gradient of throat's contracted channel 10 is 1: 4.Diffuser is a divergent contour pipeline 11, and the port of export is processed with 45 ° chamfering, and the gradient of divergent contour pipeline 11 is 1: 2.Throat is that the outlet of throat's contracted channel and the inlet kissing of divergent contour pipeline are connected on the pipeline that links in the same symmetrical plane.Process a ring annular groove 9 at the circumferencial direction of throat's contracted channel 10 inwalls, be processed with 4 weakening holes 8 that link with cannelure 9, constitute this in the inboard of inlet contracted channel 7
The weakening chamber of embodiment.
The current stabilization ring 5 of present embodiment is installed between cold water pipes 3 and the mixing duct 4, and be sleeved on steam jet 2 peripheries, form an annular circulation road between current stabilization ring 5 and steam jet 2 outer walls, the size of annular circulation road radial section is decided by that cold water flows out to the flow of mixing duct 6 inner cold waters from cold water pipes 3, and the thickness of current stabilization ring 5 is decided by that the outlet of steam jet 2 extend into the length in the mixing duct 6.Current stabilization ring 5, steam jet 2 outlet outer rims, and mixing duct 6 in inlet constituted water inlet system of the present utility model.Current stabilization ring 5 makes into that water pours mixing duct 6 at a high speed, induces strong vortex at current stabilization ring 5, steam jet 2 outlet outer rims and mixing duct 6 inlets simultaneously, forms vortex region, and weakening hole 8 and this vortex in weakening chamber link.When the utility model operate as normal, the pressure of the cross section stream-liquid two-phase flow at place, weakening chamber is a little more than the pressure of vortex, and stream-liquid two-phase flow flows into from the cannelure 9 of mixing duct 6 interior throat contracted channels 10, enters weakening hole 8, flow out to the vortex from weakening hole 8, form negative-feedback.Vibration and noise that this negative-feedback produces in the time of can eliminating the utility model work effectively, and make load accommodation of the present utility model further obtain enlarging.
The designer has provided second embodiment of the utility model.In the present embodiment, the axial length of steam jet 2 diffusers outlet divergent contour pipeline 12 is 5mm, and the angle of side and horizontal plane is 30 °.The gradient of throat's contracted channel 10 of mixing duct 6 is 1: 16, the axial length of inlet contracted channel 7 be mixing duct length 1/6, its gradient is 1: 8, the gradient of diffusion pipeline 11 is 1: 10, the weakening hole 8 in weakening chamber has 5, and the connecting relation of the shape of other parts, physical dimension and parts is identical with first embodiment.
The designer has provided the 3rd embodiment of the utility model.In the present embodiment, the axial length of steam jet 2 diffusers outlet divergent contour pipeline 12 is 10mm, and the angle of side and horizontal plane is 40 °.Mixing duct 6, the gradient of throat's contracted channel 10 is 1: 30, the axial length of inlet contracted channel 7 is 1/8 of a mixing duct length, its gradient is 1: 15, the gradient of diffusion pipeline 11 is 1: 20, the weakening hole 8 in weakening chamber has 8, and the connecting relation of the shape of other parts, physical dimension and parts is identical with first embodiment.
Operation principle of the present utility model is as follows:
Steam is entered by jet chimney 1 in the steam jet 2 of Lavalle shape and expands, and reaches supersonic speed in steam jet 2 exits.Cold water enters cold water pipes 3 by water inlet connecting tube 4, behind current stabilization ring 5, enter the Lavalle shape pipeline of mixing duct 6, because water temperature is lower, the converging portion of steam Lavalle shape pipeline in mixing duct 6 condenses, and keeps lower pressure, steam fully mixes the back with water and forms the high speed stream-liquid two-phase flow, produce shock wave near throat, cause its pressure to raise, steam all condenses, water temperature is raise, flow out behind the diffuser through mixing duct 6 Lavalle shape pipelines then.
Claims (6)
1, a kind of vapour-liquid two-phase contact type high-efficiency heat exchanger is characterized in that it comprises:
With the steam jet [2] that steam admission pipeline [1] links, vapor stream is through this steam jet [2], and its speed reaches supersonic speed; Be arranged on the peripheral cold water pipes [3] that joins or be connected as a single entity with water inlet cross over pipe [4] of steam jet [2]; Inlet is arranged on the outer and mixing duct [6] that link with steam jet [2] and cold water pipes [3] of steam jet [2] outlet, and steam mixes in this mixing duct [6] with cold water and carries out heat exchange; It also comprises the current limiter that is arranged on the cold water the regulated flow between cold water pipes [3] and the mixing duct [6].
2, according to the described vapour-liquid two-phase of claim 1 contact type high-efficiency heat exchanger, it is characterized in that: said steam jet [2] is a Lavalle shape pipeline, and vapor stream reaches supersonic speed through its speed of the exit of this Lavalle shape pipeline; Said mixing duct [6] is a Lavalle shape pipeline, is provided with the weakening chamber at the converging portion of this Lavalle shape pipeline.
3, according to the described vapour-liquid two-phase of claim 2 contact type high-efficiency heat exchanger, it is characterized in that: the converging portion of said steam jet [2] Lavalle shape pipeline is the pipeline that cylindrical pipe [15] and throat's contracted channel [14] kissing connect and link in same symmetrical plane, the diffuser pipeline that to be throat's divergent contour pipeline [13] connect and link in same symmetrical plane with outlet divergent contour pipeline [12] kissing, throat is the pipeline that the inlet kissing of the outlet of throat's contracted channel [14] and throat's divergent contour pipeline [13] connects and links in same symmetrical plane.
4, according to the described vapour-liquid two-phase of claim 3 contact type high-efficiency heat exchanger, it is characterized in that: the axial length of said steam jet [2] Lavalle shape pipe outlet divergent contour pipeline [12] is 2～10mm, and the angle of side and horizontal plane is 15 °～40 °.
5, according to the described vapour-liquid two-phase of claim 2 contact type high-efficiency heat exchanger, it is characterized in that: the pipeline that the converging portion of said mixing duct [6] links in same symmetrical plane for inlet contracted channel [7] and throat's contracted channel [10], diffuser is divergent contour pipeline [11], throat is the pipeline that the inlet kissing of the outlet of throat's contracted channel [10] and divergent contour pipeline [11] connects and links in same symmetrical plane, and the arrival end of converging portion and the port of export of diffuser are processed with chamfering; Weakening chamber in the said mixing duct [6] is: the circumferencial direction at throat's contracted channel [10] inwall is provided with a ring annular groove [9], at inlet contracted channel [7] but the weakening hole [8] that axially is provided with 4～8 circumference in equal parts and links of inwall with cannelure [9].
6, according to the described vapour-liquid two-phase of claim 5 contact type high-efficiency heat exchanger, it is characterized in that: the axial length of said mixing duct [6] inlet contracted channel [7] is 1/10～1/6 of mixing duct [a 6] length, the gradient of throat's contracted channel [10] is 1: 30～1: 4, the gradient of inlet contracted channel [7] is 1.5～2 times of the gradient of throat's contracted channel [10], and the gradient of divergent contour pipeline [11] is that 1.5～2 times of the gradient of throat's contracted channel [10] and direction are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00226806U CN2443314Y (en) | 2000-09-18 | 2000-09-18 | Steam-liquid phase contact type efficient heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00226806U CN2443314Y (en) | 2000-09-18 | 2000-09-18 | Steam-liquid phase contact type efficient heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2443314Y true CN2443314Y (en) | 2001-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00226806U Expired - Lifetime CN2443314Y (en) | 2000-09-18 | 2000-09-18 | Steam-liquid phase contact type efficient heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2443314Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420911C (en) * | 2006-07-07 | 2008-09-24 | 济南市供水设备厂有限公司 | Tube-shell type pneumatic heat exchanger and pneumatic heat exchanger assembly |
| CN104006745A (en) * | 2014-05-30 | 2014-08-27 | 西安交通大学 | Method for obtaining vapor plume penetration lengths on basis of changing of exposure time and light source intensity |
| CN105037058A (en) * | 2015-08-05 | 2015-11-11 | 张家港市兰航机械有限公司 | Steam heating device in kneading machine |
| CN111344067A (en) * | 2017-11-15 | 2020-06-26 | 埃里埃兹制造公司 | Multi-blade ultrasonic gas nozzle for liquid bubbling |
-
2000
- 2000-09-18 CN CN00226806U patent/CN2443314Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420911C (en) * | 2006-07-07 | 2008-09-24 | 济南市供水设备厂有限公司 | Tube-shell type pneumatic heat exchanger and pneumatic heat exchanger assembly |
| CN104006745A (en) * | 2014-05-30 | 2014-08-27 | 西安交通大学 | Method for obtaining vapor plume penetration lengths on basis of changing of exposure time and light source intensity |
| CN104006745B (en) * | 2014-05-30 | 2016-06-29 | 西安交通大学 | Based on changing time of exposure and the method for intensity of light source acquisition vapour plumage penetration length |
| CN105037058A (en) * | 2015-08-05 | 2015-11-11 | 张家港市兰航机械有限公司 | Steam heating device in kneading machine |
| CN111344067A (en) * | 2017-11-15 | 2020-06-26 | 埃里埃兹制造公司 | Multi-blade ultrasonic gas nozzle for liquid bubbling |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100918 Granted publication date: 20010815 |