CN102032742A - Ammonia refrigeration-based large-scale automatic high and low temperature cold store - Google Patents
Ammonia refrigeration-based large-scale automatic high and low temperature cold store Download PDFInfo
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- CN102032742A CN102032742A CN 201010584826 CN201010584826A CN102032742A CN 102032742 A CN102032742 A CN 102032742A CN 201010584826 CN201010584826 CN 201010584826 CN 201010584826 A CN201010584826 A CN 201010584826A CN 102032742 A CN102032742 A CN 102032742A
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Abstract
The invention discloses an ammonia refrigeration-based large-scale automatic high and low temperature cold store. The cold store comprises storerooms and an automatic ammonia refrigeration system, wherein the automatic ammonia refrigeration system consists of a -28 DEG C evaporation temperature system and a -8 DEG C evaporation temperature system; forced circulation is performed by an ammonia pump; a screw type refrigeration compressor unit which is provided with an economizer and is cooled by liquid ammonia serving as a working medium is adopted in the -28 DEG C evaporation temperature system; a screw refrigeration compressor unit which is cooled by the liquid ammonia serving as the working medium is adopted in the -8 DEG C evaporation temperature system; and the two evaporation temperature systems shares an evaporative condenser. The ammonia refrigeration-based large-scale automatic high and low temperature cold store has the advantages that: due to the adoption of the refrigeration system, equipment of the refrigeration system of the whole automatic high and low temperature cold store is further simplified, and the requirements of safe refrigeration of a large-scale automatic cold store of which one single layer is 10 meters high and the refrigeration capacity is 8,000 tons can be met.
Description
Technical field
The present invention relates to freezer, especially relate to a kind of large automatic high and low temperature freezer that adopts ammonia refrigeration.
Background technology
Along with the quick growth of refrigerating warehousing industry, the construction of domestic Cold Chain Logistics enters into a peak period in recent years, and the demand of freezer also increases thereupon.Freezer is divided into miniature cold storage (the refrigeration capacity is less than 1000 tons), cold storage medium (the refrigeration capacity is at 1000-5000 tons) and large cold storage (the refrigeration capacity is greater than 5000 tons) according to amount of capacity.Select in the refrigeration system of freezer, because freon refrigerant is limited, controlled, people more and more recognize the necessity and the urgency of protection atmospheric ozone layer and minimizing greenhouse effects in addition, and the application of ammonia refrigerant in refrigeration system is also more and more wider.The toxicity and the explosion hazard that have at ammonia refrigerant, the employing ammonia automation refrigeration system of safety in large cold storage how, the automation safety that can guarantee the freezer refrigerating system when satisfying the freezer refrigerating effect is again normally moved, and is industry technical staff's striving direction.
Summary of the invention
The object of the present invention is to provide a kind of height to surpass 10 meters, the large automatic high and low temperature freezer of the employing ammonia refrigeration of refrigeration capacity more than 8000 tons.
For achieving the above object, the present invention can take following technical proposals:
The large automatic high and low temperature freezer of employing ammonia refrigeration of the present invention is made up of storehouse and automation ammonia refrigeration system; Described storehouse is by forming between-18 ℃ of refrigerators ,-18 ℃ of tally rooms and 0-4 ℃ of air-conditioning hallway, is respectively arranged with a plurality of ceiling mounting type air-coolers between described refrigerator, tally room and air-conditioning hallway; Described automation ammonia refrigeration system is-28 ℃ of evaporating temperature automation refrigeration systems and-8 ℃ of evaporating temperature automation refrigeration systems;
Described-28 ℃ of evaporating temperature automation refrigeration systems are horizontal bucket ammonia pump composite set I, and regulate the station by-28 ℃ of system's feed flows that pipeline is connected in turn between horizontal bucket ammonia pump composite set I air inlet and the liquid outlet, be set up in parallel many air-coolers and-28 ℃ of system's gas-returning regulation stations in refrigerator and tally room; Between the gas outlet of described horizontal bucket ammonia pump composite set I and inlet, be connected with screw type refrigerating compressor group I, evaporative condenser, ammonia Siphon pot, ammonia reservoir, economizer in turn by pipeline;
Described-8 ℃ of evaporating temperature automation refrigeration systems are horizontal bucket ammonia pump composite set II, and regulate the station by-8 ℃ of system's feed flows that pipeline is connected in turn between horizontal bucket ammonia pump composite set II air inlet and the liquid outlet, many air-coolers and-8 ℃ of system's gas-returning regulation stations in being set up in parallel between the air-conditioning hallway; Between the gas outlet of described horizontal bucket ammonia pump composite set II and inlet, be connected with screw type refrigerating compressor group II, evaporative condenser, ammonia Siphon pot, ammonia reservoir in turn by pipeline;
Between the outlet pipe of described horizontal bucket ammonia pump composite set I and horizontal bucket ammonia pump composite set II, be connected with the gap bridge valve; Below described ammonia reservoir, be provided with and promptly let out ammonia valve; Described ammonia Siphon pot, ammonia reservoir are connected with oil catcher by pipeline; Described evaporative condenser, ammonia Siphon pot, ammonia reservoir are connected with the device of dropping a hint automatically by pipeline.
Described-18 ℃ of refrigerators are 2,12 ceiling mounting type air-coolers of every configuration; Described-18 ℃ of tally rooms are 2,4 ceiling mounting type air-coolers of every configuration; Between described 0-4 ℃ of air-conditioning hallway 4 (two big two is little), 4 ceiling mounting type air-coolers of every configuration.
The invention has the advantages that large-scale high and low temperature freezer adopts full-automatic refrigeration system pattern, with liquefied ammonia is cold-producing medium, the ammonia pump forced circulation,-28 ℃ of screw type refrigerating compressor groups that the evaporating temperature system adopts the band economizer and cools off with liquefied ammonia working medium,-8 evaporating temperature systems adopt the screw type refrigerating compressor group of liquefied ammonia working medium cooling, condenser adopts evaporative condenser, whole automation refrigeration system is further simplified, reached and satisfied the refrigeration demand of 10 meters high of individual layers, refrigeration capacity 8000 ton large-scale freezers.
Description of drawings
Fig. 1 is a refrigeration system block diagram of the present invention.
Fig. 2 is freezer of the present invention storehouse body plane figure.
The specific embodiment
As shown in Figure 1, 2, the large-scale high and low temperature automation freezer of employing ammonia refrigeration of the present invention is made up of storehouse and automation ammonia refrigeration system; Described storehouse is by 2-18 ℃ of refrigerators 1,2-18 ℃ of tally rooms 2 and 4 (two big between, two little) 3 form between 0-4 ℃ air-conditioning hallway, disposing 12 ceiling mounting type air-cooler 5a(models in every refrigerator 1 is D071-300/412-D-G, range 〉=23m), disposing 4 ceiling mounting type air-cooler 5b(models in every tally room 2 is D071-250/310-C-G, range 〉=10m), between big between the air-conditioning hallway in 3 every to dispose 4 ceiling mounting type air-cooler 5c(models be D071-230/308-B-G, range 〉=36m), between little air-conditioning hallway in 3 every to dispose 4 ceiling mounting type air-cooler 5d(models be D071-150/208-B-G, range 〉=36m); Described ammonia system is-28 ℃ of evaporating temperature automation refrigeration systems and-8 ℃ of evaporating temperature automation refrigeration systems;
Described-28 ℃ of evaporating temperature automation refrigeration systems are horizontal bucket ammonia pump composite set I, and regulate station 4a by-28 ℃ of system's feed flows that pipeline is connected in turn between horizontal bucket ammonia pump composite set I air inlet and the liquid outlet, be set up in parallel many air-cooler 5a, 5b and-28 ℃ of gas-returning regulation station 6a of system in refrigerator 1 and tally room 2; Between the gas outlet of described horizontal bucket ammonia pump composite set I and inlet, be connected with screw type refrigerating compressor group I in turn by pipeline, evaporative condenser 7, ammonia Siphon pot 8, ammonia reservoir 9 and economizer 10.Its course of work is: Ku Wen-18 ℃ refrigerator 1 and the ceiling mounting type air-cooler 5a in the tally room 2, the return-air cooled via return air pipeline of the low-temp low-pressure of 5b,-28 ℃ of gas-returning regulation station 6a of system enter horizontal bucket ammonia pump composite set I and carry out gas-liquid separation, the steam that the screw type refrigerating compressor group I compression that low-pressure gas enters band economizer 10 through aspirating air pipe becomes HTHP enters evaporative condenser 7, enter ammonia Siphon pot 8 through becoming highly pressurised liquid after the condensation, a part of liquid in the ammonia Siphon pot 8 enters ammonia reservoir 9 through the end, another part liquid enters screw type refrigerating compressor group I through the bottom oil cooler is used for cutting oil.The economizer 10 that most highly pressurised liquid that is come out by ammonia reservoir 9 enters in the screw type refrigerating compressor group I cools off again, become low pressure liquid after the choke valve throttling of cooled again high-pressure sub-cooled liquid in by the road and enter horizontal bucket ammonia pump composite set I, after ammonia pump boosts, enter-28 ℃ of system's feed flows with one of the low pressure liquid that separates through horizontal bucket ammonia pump composite set I and regulate station 4a, through laggard each the ceiling mounting type air-cooler 5a that goes in refrigerator 1 and the tally room 2 of over-allocation, carry out evaporative cooling among the 5b, the low-temp low-pressure gas after the cooling is sucked by screw type refrigerating compressor group I and circulates repeatedly.
Described-8 ℃ of evaporating temperature automation refrigeration systems are horizontal bucket ammonia pump composite set II, and regulate station 4b by-8 ℃ of system's feed flows that pipeline is connected in turn between horizontal bucket ammonia pump composite set II air inlet and the liquid outlet, be set up in parallel between the air-conditioning hallway many air- cooler 5c, 5d and-8 ℃ of gas-returning regulation station 6b of system in 3; Between the gas outlet of described horizontal bucket ammonia pump composite set II and inlet, be connected with screw type refrigerating compressor group II, evaporative condenser 7, ammonia Siphon pot 8, ammonia reservoir 9 in turn by pipeline.Its course of work is: the storehouse temperature is the ceiling mounting type air-cooler 5c in 3 between-8 ℃ air-conditioning hallway, the return-air cooled via return air pipeline of the low-temp low-pressure of 5d,-8 ℃ of gas-returning regulation station 6b of system enter horizontal bucket ammonia pump composite set II and carry out gas-liquid separation, low-pressure gas enters screw type refrigerating compressor group II through aspirating air pipe, the compressed steam that becomes HTHP enters in the evaporative condenser 7, enter ammonia Siphon pot 8 through becoming highly pressurised liquid after the condensation, a part of liquid in the ammonia Siphon pot 8 enters ammonia reservoir 9 through the end, another part liquid enters screw type refrigerating compressor group II through the bottom oil cooler is used for cutting oil.Become low pressure liquid after the choke valve throttling of most highly pressurised liquid that comes out by ammonia reservoir 9 in by the road and enter horizontal bucket ammonia pump composite set II, after ammonia pump boosts, enter-8 ℃ of system's feed flows with one of the low pressure liquid that separates through horizontal bucket ammonia pump composite set II and regulate station 4b, the ceiling mounting type air-cooler 5c, the 5d that enter respectively after over-allocation between the air-conditioning hallway in 3 carry out evaporative cooling, and the low-temp low-pressure gas after the cooling is sucked by screw type refrigerating compressor group II and circulates repeatedly.
Between the outlet pipe of described horizontal bucket ammonia pump composite set I and horizontal bucket ammonia pump composite set II, be connected with gap bridge valve 13; Its purpose is to allocate the refrigerating capacity of-28 ℃ of vapo(u)rization systems and-8 ℃ of vapo(u)rization systems.
For guaranteeing the safe operation of whole refrigeration system, below described ammonia reservoir 9, be provided with and promptly let out ammonia valve 14; Described ammonia Siphon pot 8, ammonia reservoir 9 are connected with oil catcher 11 by pipeline; Described evaporative condenser 7, ammonia Siphon pot 8, ammonia reservoir 9 are connected with the device 12 of dropping a hint automatically by pipeline.
For preventing that refrigeration system when operation from ammonia taking place leak, during practice of construction, connecting pipe adopts welding as far as possible, valve is not set, in case ammonia leakage pollution stock article in storehouse.
Claims (2)
1. a large automatic high and low temperature freezer that adopts ammonia refrigeration is made up of storehouse and automation ammonia refrigeration system; Described storehouse is made up of (3) between-18 ℃ of refrigerators (1) ,-18 ℃ of tally rooms (2) and 0-4 ℃ of air-conditioning hallway, is respectively arranged with a plurality of ceiling mounting type air-coolers between refrigerator (1), tally room (2) and air-conditioning hallway in (3); It is characterized in that: described automation ammonia refrigeration system is-28 ℃ of evaporating temperature automation refrigeration systems and-8 ℃ of evaporating temperature automation refrigeration systems;
Described-28 ℃ of evaporating temperature automation refrigeration systems are horizontal bucket ammonia pump composite set I, and regulate station (4a) by-28 ℃ of system's feed flows that pipeline is connected in turn between horizontal bucket ammonia pump composite set I air inlet and the liquid outlet, be set up in parallel many air-coolers (5a), (5b) and-28 ℃ of system's gas-returning regulation stations (6a) in refrigerator (1) and tally room (2); Between the gas outlet of described horizontal bucket ammonia pump composite set I and inlet, be connected with screw type refrigerating compressor group I in turn by pipeline, evaporative condenser (7), ammonia Siphon pot (8), ammonia reservoir (9) and economizer (10);
Described-8 ℃ of evaporating temperature automation refrigeration systems are horizontal bucket ammonia pump composite set II, and regulate station (4b) by-8 ℃ of system's feed flows that pipeline is connected in turn between horizontal bucket ammonia pump composite set II air inlet and the liquid outlet, be set up in parallel many air-coolers (5c) in (3), (5d) and-8 ℃ of system's gas-returning regulation stations (6b) between the air-conditioning hallway; Between the gas outlet of described horizontal bucket ammonia pump composite set II and inlet, be connected with screw type refrigerating compressor group II in turn by pipeline, evaporative condenser (7), ammonia Siphon pot (8), ammonia reservoir (9);
Between the outlet pipe of described horizontal bucket ammonia pump composite set I and horizontal bucket ammonia pump composite set II, be connected with gap bridge valve (13); Be provided with in the below of described ammonia reservoir (9) and promptly let out ammonia valve (14); Described ammonia Siphon pot (8), ammonia reservoir (9) are connected with oil catcher (11) by pipeline; Described evaporative condenser (7), ammonia Siphon pot (8), ammonia reservoir (9) are connected with the device of dropping a hint automatically (12) by pipeline.
2. the large automatic high and low temperature freezer of employing ammonia refrigeration according to claim 1 is characterized in that: described-18 ℃ of refrigerators (1) are 2, every configuration 12 ceiling mounting type air-coolers (5a); Described-18 ℃ of tally rooms (2) are 2, every configuration 4 ceiling mounting type air-coolers (5b); (3) are 4 between described 0-4 ℃ of air-conditioning hallway, and every is disposed 4 ceiling mounting type air-coolers (5c) and (5d).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010584826A CN102032742B (en) | 2010-12-13 | 2010-12-13 | Ammonia refrigeration-based large-scale automatic high and low temperature cold store |
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| CN201010584826A CN102032742B (en) | 2010-12-13 | 2010-12-13 | Ammonia refrigeration-based large-scale automatic high and low temperature cold store |
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| CN102032742B CN102032742B (en) | 2012-10-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688690A (en) * | 2013-12-10 | 2014-04-02 | 河南工业大学 | Large-size automatic low-temperature granary with evaporative cooling system |
| CN106568259A (en) * | 2015-10-08 | 2017-04-19 | 中海油能源发展股份有限公司 | Refrigeration house refrigerating system based on liquefied natural gas cold energy |
| CN107782008A (en) * | 2017-09-12 | 2018-03-09 | 华南理工大学 | A kind of method for reducing the split type cold wind unit R290 refrigeration dosages of freezing and refrigeration |
| CN112146297A (en) * | 2020-09-22 | 2020-12-29 | 华商国际工程有限公司 | Refrigeration system and operation control method thereof |
| CN115751814A (en) * | 2022-11-11 | 2023-03-07 | 大连工业大学 | Calandria refrigeration house system and control method thereof |
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| CN101158530A (en) * | 2007-10-31 | 2008-04-09 | 蓬莱京鲁渔业有限公司 | Ultra low temperature cool house |
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| JP2010210129A (en) * | 2009-03-09 | 2010-09-24 | Toyo Eng Works Ltd | Cooling system |
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2010
- 2010-12-13 CN CN201010584826A patent/CN102032742B/en not_active Expired - Fee Related
Patent Citations (4)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688690A (en) * | 2013-12-10 | 2014-04-02 | 河南工业大学 | Large-size automatic low-temperature granary with evaporative cooling system |
| CN106568259A (en) * | 2015-10-08 | 2017-04-19 | 中海油能源发展股份有限公司 | Refrigeration house refrigerating system based on liquefied natural gas cold energy |
| CN107782008A (en) * | 2017-09-12 | 2018-03-09 | 华南理工大学 | A kind of method for reducing the split type cold wind unit R290 refrigeration dosages of freezing and refrigeration |
| CN112146297A (en) * | 2020-09-22 | 2020-12-29 | 华商国际工程有限公司 | Refrigeration system and operation control method thereof |
| CN115751814A (en) * | 2022-11-11 | 2023-03-07 | 大连工业大学 | Calandria refrigeration house system and control method thereof |
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| Publication number | Publication date |
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| CN102032742B (en) | 2012-10-17 |
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