CN215724466U - Evaporation heat exchange barrel pump skid block unit - Google Patents
Evaporation heat exchange barrel pump skid block unit Download PDFInfo
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- CN215724466U CN215724466U CN202121461813.2U CN202121461813U CN215724466U CN 215724466 U CN215724466 U CN 215724466U CN 202121461813 U CN202121461813 U CN 202121461813U CN 215724466 U CN215724466 U CN 215724466U
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Abstract
The utility model belongs to the technical field of freezing and refrigeration, and particularly relates to an evaporation heat exchange barrel pump prying block unit which comprises a gas-liquid separator, a plate type heat exchange unit, a secondary refrigerant circulating barrel and an ammonia seamless cooling exhaust pipe, wherein a gas inlet of the gas-liquid separator is connected with a first outlet of the plate type heat exchange unit through a first pipeline, the gas-liquid separator is connected with the plate type heat exchange unit through a return pipeline, the return pipeline is also connected with an external Freon liquid supply device, the secondary refrigerant circulating barrel is connected with the plate type heat exchange unit through a pipeline, a liquid outlet of the secondary refrigerant circulating barrel is connected with a fourth pipeline through two branch pipes, a secondary refrigerant pump is arranged on each branch pipe, the fourth pipeline is connected with the ammonia seamless cooling exhaust pipe, and the ammonia seamless cooling exhaust pipe is connected with the plate type heat exchange unit through a fifth pipeline. The plate type heat exchanger unit exchanges heat with the ice river refrigerant, the refrigerant refrigerating system is safe, stable and reliable in operation, is suitable for ammonia seamless steel pipe top discharge pipes, and cannot cause personnel safety problems even if leakage occurs.
Description
Technical Field
The utility model belongs to the technical field of freezing and refrigeration, and particularly relates to an evaporation heat exchange barrel pump prying block unit.
Background
At present, with frequent occurrence of accidents of an ammonia refrigeration system, a cold chain refrigerator in a lot of areas needs to be modified due to unqualified regular inspection or annual inspection, most of the cold chain refrigerators are rented, tenant resources are very valuable, and if the modification time of the refrigerator is too long, a lot of tenants are lost; the ammonia seamless steel pipe top calandria adopted by the old system of the general low-temperature cold chain warehouse can not directly replace ammonia refrigerant to fill Freon refrigerant because Freon and oil are mutually soluble, the permeability is strong, the density is high and the like.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems, the utility model aims to provide an evaporation heat exchange barrel pump prying block unit, which solves the technical problem that Freon cannot replace ammonia refrigerant to be applied to ammonia seamless steel tubes in the prior art.
The utility model relates to an evaporation heat exchange barrel pump prying block unit which comprises a gas-liquid separator, a plate type heat exchange unit, a secondary refrigerant circulating barrel and an ammonia seamless cooling calandria, wherein a gas inlet of the gas-liquid separator is connected with a first outlet of the plate type heat exchange unit through a first pipeline, the gas-liquid separator is connected with a first inlet of the plate type heat exchange unit through a backflow pipeline, the backflow pipeline is further connected with an external Freon liquid supply device through a second pipeline, the secondary refrigerant circulating barrel is connected with a second outlet of the plate type heat exchange unit through a third pipeline, a liquid outlet of the secondary refrigerant circulating barrel is connected with a fourth pipeline through two branch pipes, a secondary refrigerant pump is arranged on each branch pipe, the fourth pipeline is connected with an ammonia seamless cooling calandria, the ammonia seamless cooling calandria is connected with a second inlet of the plate type heat exchange unit through a fifth pipeline, and the gas-liquid separator is connected with an external compressor through a sixth pipeline.
The first pipeline is provided with a liquid supply valve group.
An air return valve group is arranged on the sixth pipeline.
The return line is provided with a liquid level control device.
The ammonia seamless cooling calandria is arranged on the roof of the cold chain cold storage.
The plate heat exchanger unit is a flooded heat exchanger.
The principle of the utility model is as follows: the Freon liquid supercooled by the Freon liquid supply device enters a plate type heat exchange unit through a liquid supply valve group, exchanges heat with a glacier refrigerant secondary refrigerant LM-4 through the plate type heat exchange unit, partially evaporated Freon gas is sent to a gas-liquid separator through a first pipeline, and a compressor sucks air and controls certain evaporation pressure through an air return valve group; the glacier coolant secondary refrigerant LM-4 is cooled for the storehouse through an ammonia seamless cooling calandria (seamless steel pipe top row), then the temperature is increased, the low-temperature secondary refrigerant is changed into through a plate type heat exchange unit, falls into a low-temperature secondary refrigerant circulating barrel under the action of gravity height difference, and circulates to the cold-room storehouse seamless steel pipe top row through two secondary refrigerant pumps and pipelines to complete cooling.
Compared with the prior art, the utility model has the following beneficial effects.
(1) The plate type heat exchanger unit exchanges heat with the glacier refrigerant secondary refrigerant (such as LM-4), and the secondary refrigerant refrigerating system is safe, stable and reliable in operation, is suitable for ammonia seamless steel pipe top discharge pipes, and cannot cause personnel safety problems even if leakage occurs;
(2) the utility model carries out old warehouse reconstruction, has short production stop time, has no strict requirement on the welding quality of the pipeline, and has safe, non-toxic and non-flammable cold medium, and the medium is the glacier secondary refrigerant with low running pressure, which does not belong to a pressure pipeline and does not need to be checked every year; the operation cost is saved;
(3) the heat exchange between the ice-river secondary refrigerant and the Freon adopts flooded small-temperature-difference heat exchange, the temperature of a cold storage is designed to be-18 ℃, the temperature of the ice-river secondary refrigerant is-25 ℃, the Freon evaporation temperature is as low as-27 ℃, the energy efficiency is improved by 5 percent when the evaporation temperature is increased by 1 ℃, and the small-temperature-difference high-efficiency heat exchange greatly improves the heat exchange efficiency;
(4) the ice-river refrigerant secondary refrigerant of the utility model is circulated by using the gravity of the height difference in the operation of the whole prying block, thereby saving energy.
Drawings
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
In the figure: 1. the system comprises a liquid supply valve group 2, a liquid level control device 3, a return pipeline 4, a first inlet 5, a secondary refrigerant circulating barrel 6, a branch pipe 7, a secondary refrigerant pump 8, a liquid outlet 9, a fourth pipeline 10, an ammonia seamless cooling calandria 11, a third pipeline 12, a second outlet 13, a fifth pipeline 14, a second inlet 15, a gas-liquid separator 16, a first pipeline 17, a gas return valve group 18, a sixth pipeline 19, a plate type heat exchanger group 20 and a first outlet.
Detailed Description
The utility model is further illustrated by the following examples and figures of the specification.
As shown in fig. 1, the pump skid block unit of the evaporation heat exchange barrel of the utility model comprises a gas-liquid separator 15, a plate type heat exchange unit 19, a secondary refrigerant circulating barrel 5 and an ammonia seamless cooling calandria 10, wherein a gas inlet of the gas-liquid separator 15 is connected with a first outlet 20 of the plate type heat exchange unit 19 through a first pipeline 16, the gas-liquid separator 15 is connected with a first inlet 4 of the plate type heat exchange unit 19 through a return pipeline 3, the return pipeline 3 is further connected with an external freon liquid supply device through a second pipeline 19, the secondary refrigerant circulating barrel 5 is connected with a second outlet 12 of the plate type heat exchange unit 19 through a third pipeline 11, a liquid outlet 8 of the secondary refrigerant circulating barrel 5 is connected with a fourth pipeline 9 through two branch pipes 6, each branch pipe 6 is provided with a secondary refrigerant pump 7, the fourth pipeline 9 is connected with the ammonia seamless cooling calandria 10, the ammonia seamless cooling calandria 10 is connected with a second inlet 14 of the plate type heat exchange unit 19 through a fifth pipeline 13, the gas-liquid separator 15 is connected to an external compressor via a sixth line 18.
The first pipeline 16 is provided with a liquid supply valve group 1.
An air return valve group 17 is arranged on the sixth pipeline 18.
A liquid level control device 2 is arranged on the return pipeline 3.
The ammonia seamless cooling calandria 10 is arranged on the roof of the cold chain cold storage.
The plate heat exchanger unit 19 is a flooded heat exchanger.
The Freon liquid supercooled by the Freon liquid supply device enters a plate type heat exchange unit 19 through a liquid supply valve group 1, exchanges heat with a glacier refrigerant carrier LM-4 through the plate type heat exchange unit 19, partially evaporated Freon gas enters a gas-liquid separator through a first pipeline 16, and a compressor inhales air and controls certain evaporation pressure through an air return valve group 17; the glacier coolant secondary refrigerant LM-4 is cooled for the storehouse through the ammonia seamless cooling calandria 10 (seamless steel pipe top row), then the temperature rises, the low-temperature secondary refrigerant is changed into through the plate heat exchange unit 16, falls to the low-temperature secondary refrigerant circulating barrel 5 under the action of gravity height difference, and circulates to the cold-room seamless steel pipe top row through the two secondary refrigerant pumps 7 and the pipeline to complete cooling.
As a further improvement, the gas-liquid separator of the block prying unit is a U-turn gas-liquid separator, the U-turn gas-liquid separator adopts a sleeve type inner container gas return oil return pipe, the upper part of the top of the sleeve type gas return oil return pipe is provided with a gas return hole, an oil return hole is arranged below the bottom of the pipe, the normal liquid level of the flooded heat exchanger unit covers the whole plate for replacement, a small amount of oil is returned from the bottom of the U-turn gas-liquid separator generally, the gas in the gas-liquid separator is sucked through the gas return hole under the action of airflow pressure difference caused by air suction of a compressor, and the oil at the bottom is sucked into the compressor through the oil return hole, so that the U-turn gas-liquid separator operates efficiently and is convenient for oil return.
Claims (6)
1. The utility model provides an evaporation heat transfer bucket pump sled piece unit which characterized in that: comprises a gas-liquid separator (15), a plate heat exchanger unit (19), a secondary refrigerant circulating barrel (5) and an ammonia seamless cooling calandria (10), wherein a steam inlet of the gas-liquid separator (15) is connected with a first outlet (20) of the plate heat exchanger unit (19) through a first pipeline (16), the gas-liquid separator (15) is connected with a first inlet (4) of the plate heat exchanger unit (19) through a return pipeline (3), the return pipeline (3) is also connected with an external Freon liquid supply device through a second pipeline, the secondary refrigerant circulating barrel (5) is connected with a second outlet (12) of the plate heat exchanger unit (19) through a third pipeline (11), a liquid outlet (8) of the secondary refrigerant circulating barrel (5) is connected with a fourth pipeline (9) through two branch pipes (6), a secondary refrigerant pump (7) is arranged on each branch pipe (6), and the fourth pipeline (9) is connected with the ammonia seamless cooling calandria (10), the ammonia seamless cooling calandria (10) is connected with a second inlet (14) of the plate type heat exchanger unit (19) through a fifth pipeline (13), and the gas-liquid separator (15) is connected with an external compressor through a sixth pipeline (18).
2. The evaporation heat exchange barrel pump skid block set as set forth in claim 1, wherein: a liquid supply valve group (1) is arranged on the first pipeline (16).
3. The evaporation heat exchange barrel pump skid block set as set forth in claim 1, wherein: an air return valve group (17) is arranged on the sixth pipeline (18).
4. The evaporation heat exchange barrel pump skid block set as set forth in claim 1, wherein: a liquid level control device (2) is arranged on the return pipeline (3).
5. The evaporation heat exchange barrel pump skid block set as set forth in claim 1, wherein: the ammonia seamless cooling calandria (10) is arranged on the roof of the cold-chain refrigerator.
6. The evaporation heat exchange barrel pump skid block set as set forth in claim 1, wherein: the plate type heat exchanger unit (19) is a flooded heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121461813.2U CN215724466U (en) | 2021-06-28 | 2021-06-28 | Evaporation heat exchange barrel pump skid block unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121461813.2U CN215724466U (en) | 2021-06-28 | 2021-06-28 | Evaporation heat exchange barrel pump skid block unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215724466U true CN215724466U (en) | 2022-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121461813.2U Active CN215724466U (en) | 2021-06-28 | 2021-06-28 | Evaporation heat exchange barrel pump skid block unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215724466U (en) |
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2021
- 2021-06-28 CN CN202121461813.2U patent/CN215724466U/en active Active
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