CN203881009U - Novel ammonia refrigeration condenser - Google Patents
Novel ammonia refrigeration condenser Download PDFInfo
- Publication number
- CN203881009U CN203881009U CN201420332085.9U CN201420332085U CN203881009U CN 203881009 U CN203881009 U CN 203881009U CN 201420332085 U CN201420332085 U CN 201420332085U CN 203881009 U CN203881009 U CN 203881009U
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- China
- Prior art keywords
- injector
- tube
- heat exchanger
- tubular heat
- ammonia
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- Withdrawn - After Issue
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Abstract
The utility model discloses a novel ammonia refrigeration condenser which comprises a tubular heat exchanger, a circulating tube and an injector. A lower tube pass of the tubular heat exchanger is connected with a cooling water inlet tube, an upper tube pass is connected with a cooling water outlet tube, an inlet of ammonia steam to be liquefied and condensed is arranged at the top of a shell pass of the tubular heat exchanger through the injector. The injector comprises an injection tube, an expansion tube and an injector tube wall, wherein the large opening position of the injection tube is connected with the inlet of the ammonia steam to be liquefied and condensed, the small opening position is connected with the small opening position of the expansion tube, an annular gap is formed at the connecting position, the large opening position of the expansion tube is connected with the top of the shell pass of the tubular heat exchanger, the injector wall, the injection tube wall and the expansion tube wall form an airtight cavity, and the cavity is communicated with the circulating tube. The novel ammonia refrigeration condenser ingeniously and reasonably eliminate the influence on ammonia steam condensation and liquidation of an air enrichment film through the Venturi effect, improves the efficiency and working performance of an ammonia refrigeration device, saves power and is simple in structure and good in practicability.
Description
Technical field
The utility model relates in a kind of ammonia refrigerating installation the condenser for ammoniacal liquor and condensation.
Background technology
Ammonia has good thermodynamic property, in relatively large refrigeration system, is all generally to adopt ammonia as cold-producing medium.In compression, condensation, throttling, evaporation four steps of refrigeration circulate, the condensation of ammonia is wherein one of four step circulations, ammonia condenser is exactly to utilize recirculated water heat exchange to realize the condensation liquefaction of ammonia steam, and the general design pressure of ammonia condenser approaches 2.5MP, is typical pressure vessel.
In the condensation cycle of ammonia, overall heat-transfer coefficient is affected by more factor, the incoagulable gas of wherein being sneaked into wherein affects very large, incoagulable gas in actual production is exactly generally air, in the condensation process at ammonia steam, ammonia steam orientation is shifted to heat exchange surface heat exchange condensation, as long as there is a small amount of incoagulable gas will be enriched in heat exchange surface in such process, forms air enrichment film.
Ammonia steam will be realized condensation, must produce very large resistance to mass tranfer with diffusion way through air film, directly makes overall heat-transfer coefficient drop to very low, has a strong impact on condensation process.Once condensing pressure rises, directly make Compressor Discharge Pressure raise, cause compressor power consumption severe overweight, cause refrigeration to worsen.
Although there is air separator in ammonia refrigeration system, state-of-the-art air separator also can not be removed the incoagulable gas such as air in system 100%, thereby need to eliminate the impact of air enrichment film as far as possible, improves the coefficient of heat transfer.
Utility model content
The technical problems to be solved in the utility model overcomes the deficiencies in the prior art exactly, a kind of novel ammonia refrigeration condenser is provided, this condenser passes through Venturi effect, the ingenious rational impact of air enrichment film on ammonia steam-condensation and liquefaction of having eliminated, improve condensation and the liquefaction efficiency of ammonia steam, thereby improved the service behaviour of ammonia refrigerating installation, saved electric power, there is feature simple in structure, practical.
For overcoming the deficiencies in the prior art, the utility model is taked following technical scheme:
A kind of novel ammonia refrigeration condenser, comprise tubular heat exchanger, circulation pipe and injector, it is characterized in that: the lower tube side of tubular heat exchanger connects cooling water inlet pipe, upper tube side connects cooling water outlet pipe, the ammonia steam inlet for the treatment of liquefaction and condensation enters the top of tubular heat exchanger shell side through injector, the middle and lower part of tubular heat exchanger shell side is communicated with injector through circulation pipe; Injector comprises jet pipe, convergent divergent channel and injector tube wall, jet pipe opening larger part connects the ammonia steam inlet for the treatment of liquefaction and condensation, opening smaller part connects convergent divergent channel opening smaller part and there is annular space junction, convergent divergent channel opening larger part is connected the top of tubular heat exchanger shell side, injector tube wall and jet pipe tube wall, convergent divergent channel tube wall form airtight cavity, and cavity and circulation pipe are connected.
The design's core is on the basis of traditional ammonia refrigeration condenser structure, to add an injector, and injector, because ammonia steam sprays into generation Venturi effect, makes whole condenser inner high voltage γ-ray emission convective motion, produces ascending air in circulation pipe.
When treating that the ammonia steam of liquefaction and condensation imports from air inlet, while making gas spray into convergent divergent channel at a relatively high speed by jet pipe, can produce certain low pressure at injector walls inner chamber, low pressure can be impelled the gas in circulation pipe to be inhaled into and from convergent divergent channel, discharge Venturi effect that similar pump sucks continuously, Here it is.
Key of the present utility model is the gas circulation function that will produce suction, discharge, so jet pipe and convergent divergent channel have improved ammonia steam flow rate by reducing, produces negative pressure and circulate with regard to driving whole condenser to form airflow convection by circulation pipe in cavity.
Although area of injection orifice progressively reduces, but it is very little that throttling produces resistance, causing that Compressor Discharge Pressure raises also can ignore completely, the impact of compressor is far smaller than because micro-incoagulable gas exists and affects the Compressor Discharge Pressure that condensation produces and increase, thereby can not cause the increase of compressor power consumption.
Adopt this injector to drive the internal high pressure ammonia vapor recycle of condenser, just can realize continuous disturbance and abolish air enrichment film, thereby greatly improving the overall heat-transfer coefficient in ammonia Condensation, reducing ammonia condensing pressure, Compressor Discharge Pressure is reduced, and compressor power consumption reduces.
Compared with prior art, the beneficial effects of the utility model are:
Do not have moving component, structural design ingenious especially, simple, reasonable, utilize to spray drive bulk convection can not stop disturbance and destroy air enrichment film, real-time update heat-transfer surface, keeps higher overall heat-transfer coefficient; Improve overall heat-transfer coefficient, just can reduce ammonia condensing pressure, thereby reduced Compressor Discharge Pressure, reduced power consumption; Ammonia steam throttling injection degree is very little, can not cause that power consumption exceeds standard; Equipment is simple, reliable, does not need manual operation and maintenance.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of novel ammonia refrigeration condenser.
Fig. 2 is the plane enlarged drawing of injector.
In figure, each label represents:
1, cooling water outlet pipe; 2, heat exchanger tube upper cover; 3, wait to liquefy and the ammonia steam inlet of condensation; 4, injector; 5, circulation pipe; 6, heat exchanger outer wall; 7, heat exchanger tube; 8, ammoniacal liquor recycle control valve; 9, heat exchanger tube low head; 10, cooling water inlet pipe; 11, injector tube wall; 12, jet pipe; 13 convergent divergent channels.
The specific embodiment
Now by reference to the accompanying drawings, the utility model is further illustrated.
Novel ammonia refrigeration condenser as depicted in figs. 1 and 2, comprise tubular heat exchanger, circulation pipe 5 and injector 4, the lower tube side of tubular heat exchanger connects cooling water inlet pipe 1, upper tube side connects cooling water outlet pipe 10, the ammonia steam inlet 3 for the treatment of liquefaction and condensation enters the top of tubular heat exchanger shell side through injector 4, the middle and lower part of tubular heat exchanger shell side is communicated with 4 through circulation pipe 5 with injector; Injector 4 comprises jet pipe 12, convergent divergent channel 13 and injector tube wall 11, jet pipe 12 opening larger parts connect the ammonia steam inlet 3 for the treatment of liquefaction and condensation, opening smaller part connects convergent divergent channel 13 opening smaller parts and there is annular space junction, convergent divergent channel 13 opening larger parts are connected the top of tubular heat exchanger shell side, injector tube wall 11 forms airtight cavity with jet pipe 12 tube walls, convergent divergent channel 13 tube walls, and cavity and circulation pipe 5 are connected.
The design's core is on the basis of traditional ammonia refrigeration condenser structure, to add an injector 4, and injector 4, because ammonia steam sprays into generation Venturi effect, makes whole condenser inner high voltage γ-ray emission convective motion, at the interior generation ascending air of circulation pipe 5.
When treating that the ammonia steam of liquefaction and condensation imports from air inlet 3, while making gas spray into convergent divergent channel 13 at a relatively high speed by jet pipe 12, can produce certain low pressure at injector walls inner chamber, low pressure can be impelled the gas in circulation pipe 5 to be inhaled into and from convergent divergent channel 13, discharge Venturi effect that similar pump sucks continuously, Here it is.
Key of the present utility model is the gas circulation function that will produce suction, discharge, so jet pipe 12 and convergent divergent channel 13 have improved ammonia steam flow rate by reducing, produces negative pressure and just can drive whole condenser to circulate by circulation pipe 5 formation airflow convections in cavity.
Although area of injection orifice progressively reduces, but it is very little that throttling produces resistance, causing that Compressor Discharge Pressure raises also can ignore completely, the impact of compressor is far smaller than because micro-incoagulable gas exists and affects the Compressor Discharge Pressure that condensation produces and increase, thereby can not cause the increase of compressor power consumption.
Adopt this injector 4 to drive the internal high pressure ammonia vapor recycle of condenser, just can realize continuous disturbance and abolish air enrichment film, thereby greatly improving the overall heat-transfer coefficient in ammonia Condensation, reducing ammonia condensing pressure, Compressor Discharge Pressure is reduced, and compressor power consumption reduces.
Above-mentioned is preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction.Any those of ordinary skill in the art, in the situation that not departing from technical solutions of the utility model scope, all can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solutions of the utility model,, all should drop in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the utility model technical spirit.
Claims (1)
1. a novel ammonia refrigeration condenser, comprise tubular heat exchanger, circulation pipe and injector, it is characterized in that: the lower tube side of tubular heat exchanger connects cooling water inlet pipe, upper tube side connects cooling water outlet pipe, the ammonia steam inlet for the treatment of liquefaction and condensation enters the top of tubular heat exchanger shell side through injector, the middle and lower part of tubular heat exchanger shell side is communicated with injector through circulation pipe; Injector comprises jet pipe, convergent divergent channel and injector tube wall, jet pipe opening larger part connects the ammonia steam inlet for the treatment of liquefaction and condensation, opening smaller part connects convergent divergent channel opening smaller part and there is annular space junction, convergent divergent channel opening larger part is connected the top of tubular heat exchanger shell side, injector tube wall and jet pipe tube wall, convergent divergent channel tube wall form airtight cavity, and cavity and circulation pipe are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332085.9U CN203881009U (en) | 2014-06-21 | 2014-06-21 | Novel ammonia refrigeration condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332085.9U CN203881009U (en) | 2014-06-21 | 2014-06-21 | Novel ammonia refrigeration condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881009U true CN203881009U (en) | 2014-10-15 |
Family
ID=51681498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420332085.9U Withdrawn - After Issue CN203881009U (en) | 2014-06-21 | 2014-06-21 | Novel ammonia refrigeration condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203881009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006581A (en) * | 2014-06-21 | 2014-08-27 | 吉首大学 | Novel ammonia refrigeration condenser |
-
2014
- 2014-06-21 CN CN201420332085.9U patent/CN203881009U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006581A (en) * | 2014-06-21 | 2014-08-27 | 吉首大学 | Novel ammonia refrigeration condenser |
| CN104006581B (en) * | 2014-06-21 | 2016-01-20 | 吉首大学 | Novel ammonia refrigeration condenser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141015 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |