CN202598939U - Refrigerating unit - Google Patents
Refrigerating unit Download PDFInfo
- Publication number
- CN202598939U CN202598939U CN 201220263460 CN201220263460U CN202598939U CN 202598939 U CN202598939 U CN 202598939U CN 201220263460 CN201220263460 CN 201220263460 CN 201220263460 U CN201220263460 U CN 201220263460U CN 202598939 U CN202598939 U CN 202598939U
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- outlet
- economizer
- tube side
- condenser
- pipeline
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Abstract
The utility model belongs to chemical equipment and particularly relates to a refrigerating unit, which comprises a condenser and is characterized in that the bottom of the condenser is connected with an ammonia tank through a pipe, a liquid ammonia outlet is arranged at the bottom of the ammonia tank, the liquid ammonia outlet is sequentially connected with a first throttle valve, the shell side of an evaporator, the first inlet of a screw refrigeration compressor and the screw refrigeration compressor through pipes, and the outlet of the screw refrigeration compressor is connected with the liquid ammonia inlet of the condenser; a tee joint is arranged on a pipe between the liquid ammonia outlet and the first throttle valve, and one end of the tee joint is connected with a second throttle valve, the tube side of en economizer and the gas replenishing port of the screw refrigeration compressor through pipes; and the tube side of the economizer is connected with the tube side of the evaporator through a pipe, an inlet on the tube side of the economizer is connected with a raw gas inlet pipe and an outlet on the tube side of the evaporator is connected with a raw gas outlet pipe. The refrigerating unit has the advantages that two different refrigeration working conditions can be provided, and the efficiency and the refrigeration coefficient of the refrigerating unit are improved.
Description
Technical field
The utility model belongs to chemical industry equipment, is specifically related to a kind of two kinds of different cooling conditions that provide, and improves the refrigeration unit of refrigeration unit efficient and coefficient of refrigerating performance.
Background technology
The refrigeration unit that is used for worst cold case nearly all has economizer; The effect of economizer is that cooling is extremely cold excessively from the liquefied ammonia that storage ammonia device comes; Cross cold liquefied ammonia and can in the throttling step-down cooling procedure of back, can produce more refrigeration capacity, thereby improve the cooling effect of refrigeration unit.The gas ammonia that gasification produces in economizer gets into refrigeration compressor set from gas supplementing opening.Economizer comes down to a liquid subcooler, and through economizer, wherein sub-fraction liquid evaporates in economizer and absorbs the highly pressurised liquid heat so that it is cold excessively through auxiliary throttle valve from the highly pressurised liquid of condenser.Subcooled liquid gets into the refrigerating capacity that evaporator evaporation will improve the unit mass cold-producing medium through primary throttle valve.This just requires to keep an intermediate pressure in the economizer all the time, and the refrigerant vapour that just requires constantly to produce in the economizer is taken away continuously.Because screw type refrigerating compressor is air-breathing and exhaust all is same directions, a certain position after compressor air suction finishes is established an additional air entry newly, sucks the refrigerant vapour from economizer, thereby accomplishes economizer cycle, and it is cold that refrigerant liquid must be.The operational effect of band economizer gas supplementing opening Spiral Lobe Refrigeration Compressor is equivalent to a twin-stage compression refrigeration circulation, compares with twin-stage compression refrigeration circulation, and refrigeration system is simplified greatly.The economizer kind of refrigeration cycle can increase substantially refrigerating capacity and coefficient of refrigerating performance, and evaporating temperature is lower, and effect is more obvious, and as under+35 ℃/one 35 ℃ worst cold cases, refrigerating capacity and coefficient of refrigerating performance can improve 25% and 15% respectively.The economizer of refrigeration unit exists following point: one, the general employing of economizer at present is the horizontal pipe heat exchanger; The pipe heat exchanger cold fluid and hot fluid temperature difference is bigger; Under the identical refrigerating capacity of identical operating mode; Pipe heat exchanger need be throttled to lower temperature with cold-producing medium, increases the shaft power of refrigeration unit; Two, the use of economizer generally is the liquid refrigerant that is used for cooling off condensation under saturation temperature at present; Make the cold-producing medium that is under the saturation temperature reach cold situation bigger refrigerating capacity is provided; Can't two clock different working conditions be provided using under the situation of a worst cold case refrigeration unit, the refrigeration unit of tradition band economizer does not then have applicability for not only needing worst cold case but also needing for the refrigeration system of air conditioning condition.
Summary of the invention
The purpose of the utility model is to overcome defective of the prior art and a kind of two kinds of different cooling conditions that provide is provided, and improves the refrigeration unit of refrigeration unit efficient and coefficient of refrigerating performance.
The purpose of the utility model is achieved in that and comprises condenser; Described condenser bottom links to each other with the ammonia jar through pipeline; The bottom of described ammonia jar is provided with the liquefied ammonia outlet; The outlet of described liquefied ammonia through pipeline successively with shell side, screw type refrigerating compressor first import, the screw type refrigerating compressor of first throttle valve, evaporimeter, import links to each other with condenser liquefied ammonia in the screw type refrigerating compressor outlet; Pipeline between outlet of described liquefied ammonia and the first throttle valve is provided with threeway, an end of described threeway through pipeline successively with second choke valve, the shell side of economizer links to each other with the screw type refrigerating compressor gas supplementing opening; The tube side of described economizer links to each other through pipeline with the tube side of evaporimeter, the import of the tube side of described economizer and unstrpped gas inlet pipeline, and the outlet of the tube side of described evaporimeter links to each other with the unstrpped gas outlet conduit.Described economizer is a plate-fin heat exchanger.
The utlity model has provides two kinds of different cooling conditions, improves the advantage of refrigeration unit efficient and coefficient of refrigerating performance.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
As shown in Figure 1; The utility model comprises condenser 1; Described condenser 1 bottom links to each other with ammonia jar 12 through pipeline; The bottom of described ammonia jar 12 is provided with liquefied ammonia outlet 2, described liquefied ammonia outlet 2 through pipeline successively with first import 7 of the shell side of first throttle valve 3, evaporimeter 4, screw type refrigerating compressor, screw type refrigerating compressor 5, screw type refrigerating compressor outlet 8 links to each other with condenser liquefied ammonia import 6; Pipeline between outlet 2 of described liquefied ammonia and the first throttle valve 3 is provided with threeway, an end of described threeway through pipeline successively with second choke valve 9, the shell side of economizer 10 links to each other with screw type refrigerating compressor gas supplementing opening 11; The tube side of described economizer 10 links to each other through pipeline with the tube side of evaporimeter 4, the import of the tube side of described economizer 10 and unstrpped gas inlet pipeline, and the outlet of the tube side of described evaporimeter 4 links to each other with the unstrpped gas outlet conduit.Described economizer 10 is a plate-fin heat exchanger.
The operation principle of the utility model is: the saturation temperature of the corresponding certain pressure of liquefied ammonia under certain saturation pressure; Therefore can realize temperature controlling through first throttle valve 3 regulator solution ammonia pressures; First throttle valve 3 is throttled to 0.2MPa with liquefied ammonia exactly; This moment, the liquefied ammonia temperature was about-15 ℃, and in evaporimeter 4, being heated flashes to gas, and the unstripped gas of the evaporimeter 4 of flowing through is condensed into liquid.Second choke valve 9 is throttled to 0.5MPa with liquefied ammonia, and this moment, the liquefied ammonia temperature was about 4 ℃, and liquefied ammonia is heated in economizer 10 and flashes to gas.Unstripped gas in the economizer 10 is controlled at about 5 ℃.Screw type refrigerating compressor 5 air inlet pressure are 0.2MPa, and exhaust port pressure is 1.5MPa, and the gas ammonia under the high pressure is through condenser 1, and catching a cold is liquefied as liquid entering ammonia jar.The purpose of the utility model is economizer 10 is peeled off, and replaces with plate-fin heat exchanger, and the gas ammonia of generation gets into screw type refrigerating compressor gas supplementing opening 11, makes a refrigeration unit that two kinds of cooling conditions can be provided.
Claims (2)
1. refrigeration unit; Comprise condenser (1); It is characterized in that: described condenser (1) bottom links to each other with ammonia jar (12) through pipeline; The bottom of described ammonia jar (12) is provided with liquefied ammonia outlet (2), described liquefied ammonia outlet (2) through pipeline successively with shell side, screw type refrigerating compressor first import (7), the screw type refrigerating compressor (5) of first throttle valve (3), evaporimeter (4), screw type refrigerating compressor outlet (8) links to each other with condenser liquefied ammonia import (6); Described liquefied ammonia outlet (2) is provided with threeway with pipeline between the first throttle valve (3), an end of described threeway pass through pipeline successively with second choke valve (9), the shell side of economizer (10) links to each other with screw type refrigerating compressor gas supplementing opening (11); The tube side of described economizer (10) links to each other through pipeline with the tube side of evaporimeter (4), the import of the tube side of described economizer (10) and unstrpped gas inlet pipeline, and the outlet of the tube side of described evaporimeter (4) links to each other with the unstrpped gas outlet conduit.
2. refrigeration unit according to claim 1 is characterized in that: described economizer (10) is a plate-fin heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220263460 CN202598939U (en) | 2012-05-28 | 2012-05-28 | Refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220263460 CN202598939U (en) | 2012-05-28 | 2012-05-28 | Refrigerating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202598939U true CN202598939U (en) | 2012-12-12 |
Family
ID=47316471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220263460 Expired - Lifetime CN202598939U (en) | 2012-05-28 | 2012-05-28 | Refrigerating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202598939U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406318A (en) * | 2014-12-24 | 2015-03-11 | 无锡五洋赛德压缩机有限公司 | Minitype screw rod refrigerating unit |
| CN109282574A (en) * | 2018-09-25 | 2019-01-29 | 陈剑军 | A kind of device and production method with ammonia heat pump refrigerating recycling dry ice gas phase |
-
2012
- 2012-05-28 CN CN 201220263460 patent/CN202598939U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406318A (en) * | 2014-12-24 | 2015-03-11 | 无锡五洋赛德压缩机有限公司 | Minitype screw rod refrigerating unit |
| CN109282574A (en) * | 2018-09-25 | 2019-01-29 | 陈剑军 | A kind of device and production method with ammonia heat pump refrigerating recycling dry ice gas phase |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HENAN XINLIANXIN CRYOGENIC COOLING ENERGY CO., LTD Free format text: FORMER NAME: XLX GROUP GAS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 453731 Qinglong Road, Xinxiang Economic Development Zone, Henan, China Patentee after: Henan Xinlianxin Shenleng Energy Co., Ltd. Address before: 453731 Qinglong Road, Xinxiang Economic Development Zone, Henan, China Patentee before: Xinxiang XLX Gas Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |