CN209783097U

CN209783097U - refrigeration system of refrigeration house

Info

Publication number: CN209783097U
Application number: CN201920415504.8U
Authority: CN
Inventors: 杨志海
Original assignee: Dopps Chemical Science And Technology (dongguang) Co Ltd; Topps Chemical Science And Technology (beijing) Co Ltd
Current assignee: Dopps Chemical Science And Technology (dongguang) Co Ltd; Topps Chemical Science And Technology (beijing) Co Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2019-12-13
Anticipated expiration: 2029-03-28

Abstract

The utility model relates to a freezer refrigerating system, including being located the outside cooling tower of freezer, low temperature cooling water set and being located the inside refrigerating plant of freezer, low temperature cooling water set includes the compressor, the condenser, throttling element and evaporimeter, the evaporimeter is provided with refrigerant circulation pipeline and secondary refrigerant circulation pipeline, the compressor pass through the pipeline in proper order with the condenser, throttling element, the refrigerant circulation pipeline of evaporimeter links to each other, the inlet and the leakage fluid dram of cooling tower link to each other with the delivery port and the water inlet of condenser through the pipeline respectively, be provided with the cooling pump on the pipeline between cooling tower and the condenser, refrigerating plant's entering end and discharge end are linked together through the entering end and the discharge end of pipeline with secondary refrigerant circulation pipeline respectively, be provided with the refrigeration pump on the pipeline between refrigerating plant's the discharge end and the entering end of secondary refrigerant circulation pipeline. The utility model has the advantages of high safety, energy saving and environmental protection.

Description

Refrigeration system of refrigeration house

Technical Field

The utility model belongs to the technical field of the technique of freezer and specifically relates to a freezer refrigerating system is related to.

Background

The cold storage is mainly used as constant-temperature storage cold air equipment for food, dairy products, meat, aquatic products, chemical industry, medicine, seedling culture, scientific experiments and the like, and the existing cold storage mostly adopts a carbon dioxide refrigeration system or an ammonia refrigeration system to refrigerate the cold storage.

The existing carbon dioxide refrigeration system has high requirements on materials such as valves, pipelines and the like and welding because the pressure of the carbon dioxide system is high (the design pressure is 5 MPa). Meanwhile, the leakage is easy, the leakage point is difficult to find, and CO is generated₂The water content is less than 0.1 percent, otherwise, strong corrosive acid is easily formed, and the system is threatened greatly. An ammonia refrigeration system generally uses ammonia as a refrigerant to cool a refrigerator. Ammonia is used as a refrigerant, and due to the flammability and toxicity of ammonia, once ammonia leakage occurs, serious safety accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a freezer refrigerating system, it has the high, energy-concerving and environment-protective advantage of security.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

A refrigeration system of a refrigeration house comprises a cooling tower positioned outside the refrigeration house, a low-temperature water chilling unit and a refrigeration device positioned inside the refrigeration house, wherein the low-temperature water chilling unit comprises a compressor, a condenser, a throttling element and an evaporator, a refrigerant circulation pipeline and a secondary refrigerant circulation pipeline are arranged inside the evaporator, an exhaust end of the compressor is sequentially connected with the condenser, the throttling element and an inlet end of the refrigerant circulation pipeline of the evaporator through pipelines, an exhaust end of the refrigerant circulation pipeline is connected with an inlet end of the compressor through a pipeline, a liquid inlet and a liquid outlet of the cooling tower are respectively connected with a water outlet and a water inlet of the condenser through pipelines, a cooling pump is arranged on a pipeline between the liquid inlet of the cooling tower and the water outlet of the condenser, an inlet end and an exhaust end of the refrigeration device are respectively communicated with an inlet end and an exhaust end of the secondary refrigerant circulation pipeline through pipelines, and a refrigeration pump is arranged on a pipeline between the exhaust end.

through adopting above-mentioned technical scheme, send into the condenser through the cooling water of refrigerating pump in with the cooling tower, compressor exhaust high temperature high pressure gas carries out the condensation through the condenser and releases heat, gas after the final cooling is sent into the evaporimeter through the throttling element and is evaporated the heat absorption, thereby cool down the secondary refrigerant in the inside secondary refrigerant circulating line of evaporimeter, send into refrigerating plant through the refrigerating pump with the secondary refrigerant of cooling at last, and refrigerate the inside of freezer through refrigerating plant, adopt this system, it has low pressure, and difficult the leakage causes environmental pollution.

The utility model discloses further set up to: the refrigerating device comprises an air cooler and a refrigerating calandria which are arranged in parallel.

Through adopting above-mentioned technical scheme, can be better refrigerate for in the freezer, ensure the refrigeration temperature in the freezer.

The utility model discloses further set up to: a liquid supplementing device is arranged between the refrigerating pump and the inlet end of the secondary refrigerant circulation pipeline of the evaporator, the liquid supplementing device comprises a liquid supplementing box which is communicated with the inlet end of the secondary refrigerant circulation pipeline of the evaporator through a liquid supplementing pipeline, and a liquid supplementing pump is arranged on the liquid supplementing pipeline.

By adopting the technical scheme, when the secondary refrigerant in the secondary refrigerant circulating system is excessively consumed, liquid can be supplemented in the secondary refrigerant circulating system.

The utility model discloses further set up to: the liquid supplementing box is made of transparent materials.

By adopting the technical scheme, the content of the secondary refrigerant in the liquid supplementing box can be checked conveniently.

The utility model discloses further set up to: an oil-gas separator is arranged between the compressor and the condenser, and an oil outlet of the oil-gas separator is connected back to the compressor through a pipeline.

By adopting the technical scheme, the content of oil in the refrigerating system is reduced.

The utility model discloses further set up to: a drying filter is arranged on a pipeline between the condenser and the throttling element.

Through adopting above-mentioned technical scheme, filter the gas that flows into in the throttling element, avoid impurity to enter into the throttling element and cause the jam.

The utility model discloses further set up to: still including vapour and liquid separator among the low temperature cooling water set, vapour and liquid separator is including being located the hollow casing on the pipeline between evaporimeter and the choke valve, the top of casing is provided with the outlet duct, the bottom of casing is provided with the drain pipe, be provided with admission pipe and liquid return pipe on the lateral wall of casing, vapour and liquid separator's admission pipe is linked together through the pipeline with the outlet duct of throttle spare, vapour and liquid separator's drain pipe is linked together with the inlet end of the inside refrigerant circulation pipeline of evaporimeter, the exit end of secondary refrigerant circulation pipeline is linked together through the pipeline with vapour and liquid separator's liquid return pipe, vapour and liquid separator's outlet duct is linked together through the admission pipe of pipeline.

By adopting the technical scheme, the refrigerant in the refrigerant circulating system is subjected to gas-liquid separation through the gas-liquid separator.

The utility model discloses further set up to: a plurality of baffle plates which are arranged in a staggered mode are arranged inside the shell, and a bent circulation channel is formed between the baffle plates.

By adopting the technical scheme, the time of the refrigerant in the gas-liquid separator is prolonged, so that the gas-liquid separation effect of the gas-liquid separator is ensured.

The utility model discloses further set up to: the throttling element is an expansion valve or a capillary tube.

By adopting the technical scheme, the capillary tube or the expansion valve enables the high-pressure liquid refrigerant coming out of the condenser to become low-pressure liquid refrigerant through throttling expansion, and then the low-pressure liquid refrigerant enters the evaporator.

To sum up, the utility model discloses a beneficial technological effect does:

1. The system is characterized in that cooling water in a cooling tower is sent into a condenser through a freezing pump, high-temperature and high-pressure gas discharged by a compressor is condensed and releases heat through the condenser, finally the cooled gas is sent into an evaporator through a throttling element to be evaporated and absorbed, so that secondary refrigerant in a secondary refrigerant circulation pipeline in the evaporator is cooled, finally the cooled secondary refrigerant is sent into a refrigerating device through the freezing pump, and the inside of a refrigeration house is refrigerated through the refrigerating device;

2. Performing gas-liquid separation on the refrigerant in the refrigerant circulating system through a gas-liquid separator;

3. The oil-gas separator is arranged, so that the content of oil in the refrigerating system is reduced.

Drawings

FIG. 1 is a schematic diagram of a refrigeration system for a refrigerated storage;

FIG. 2 is a schematic view of a gas-liquid separator.

In the figure, 1, a cooling tower; 2. a low temperature chiller; 21. a compressor; 22. an oil-gas separator; 23. a condenser; 24. drying the filter; 25. a throttle member; 26. a gas-liquid separator; 261. a housing; 262. an air outlet pipe; 263. a liquid outlet pipe; 264. an inlet pipe; 265. a liquid return pipe; 266. a baffle plate; 27. an evaporator; 271. a refrigerant circulation line; 272. a coolant circulation line; 3. an air cooler; 4. a refrigeration calandria; 5. a cooling pump; 6. a first communicating pipe; 7. a second communicating conduit; 8. a freeze pump; 9. a liquid supplementing device; 91. a liquid replenishing box; 92. a liquid supplementing pipeline; 93. and (5) a liquid supplementing pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a freezer refrigerating system, including being located the outside cooling tower 1 of freezer, low temperature cooling water set 2 and being located the inside air-cooler 3 and the refrigeration calandria 4 that set up side by side of freezer.

The low-temperature water chilling unit 2 comprises a compressor 21, an oil-gas separator 22, a condenser 23, a drying filter 24, a throttling piece 25, a gas-liquid separator 26 and an evaporator 27 which are connected together through pipelines. The evaporator 27 is provided therein with a refrigerant circulation line 271 and a brine circulation line 272. A refrigerant circulation system is formed among the compressor 21, the oil-gas separator 22, the condenser 23, the drying filter 24, the throttle 25, the gas-liquid separator 26 and the refrigerant circulation line 271 in the evaporator 27, and the refrigerant in the refrigerant circulation system is environment-friendly freon refrigerant.

The gas-liquid separator 26 includes a transparent housing 261 having a hollow interior. An air outlet pipe 262 communicated with the inside of the shell 261 is fixed at the top end of the shell 261; a liquid outlet pipe 263 which is positioned at the bottom end of the shell 261 and is communicated with the inside of the shell 261; an inlet pipe 264 and a liquid return pipe 265 communicating with the inside of the housing 261 are fixed to a side wall of the housing 261.

The discharge end of the compressor 21 is communicated with the gas inlet end of the gas-oil separator 22 through a pipeline, and the oil outlet of the gas-oil separator 22 is connected back to the compressor 21 through a pipeline. The discharge end of the oil-gas separator 22 is connected to the inlet end of the condenser 23 through a pipe, and the discharge end of the condenser 23 is communicated with the inlet end of the drying filter 24 through a pipe. The outlet end of the dry filter 24 communicates with the inlet end of the orifice 25, and the orifice 25 may be an expansion valve or a capillary tube. The discharge end of the orifice 25 communicates with the inlet pipe 264 of the gas-liquid separator 26 through a pipe. Liquid outlet 263 of gas-liquid separator 26 communicates with the inlet end of refrigerant circulation line 271 in evaporator 27. The discharge end of the refrigerant circulation line 271 inside the evaporator 27 is connected back to the liquid return port 263 of the gas-liquid separator 26 through a line. The outlet pipe 262 of the gas-liquid separator 26 is communicated with the inlet end of the compressor through a pipeline.

The liquid inlet of the cooling tower 1 is connected with the water outlet of the condenser 23 through a pipeline, the pipeline between the liquid inlet of the cooling tower 1 and the water outlet of the condenser 23 is provided with a cooling pump 5, and power is provided through the cooling pump 5, so that liquid discharged from the condenser 23 is pumped into the cooling tower 1 to be cooled. The liquid outlet of the cooling tower 1 is connected to the water inlet of the condenser 23 by a pipe, and the cooling water in the cooling tower 1 is fed into the condenser 23 to turn the coolant vapor flowing through the inside of the condenser 23 into a liquid state.

the air cooler 3 is connected with the inlet of the refrigeration calandria 4 through a first communicating pipeline 6, and the air cooler 3 is connected with the outlet of the refrigeration calandria 4 through a second communicating pipeline 7. The first communicating pipe 6 is connected to the liquid outlet end of the secondary refrigerant circulating pipe 272 inside the evaporator 27 through a pipe, the second communicating pipe 7 is connected to the inlet end of the secondary refrigerant circulating pipe 272 inside the evaporator 27 through a pipe, and the refrigerating pump 8 is installed on the pipe between the second communicating pipe 7 and the inlet end of the secondary refrigerant circulating pipe 272 inside the evaporator 27. The air cooler 3, the cooling rows 4, the first communication duct 6, the second communication duct 7, and the coolant passage 272 inside the evaporator 27 form a coolant circulation line. The secondary refrigerant circulating in the secondary refrigerant circulating pipeline is a secondary refrigerant developed by the Dorps chemical technology (Beijing) company, and has the characteristics of no corrosion, low viscosity, good transfer performance and safety.

A liquid supplementing device 9 for supplementing liquid to the refrigerating medium circulation pipeline is arranged on a pipeline between the refrigerating pump 8 and the inlet end of the refrigerating medium circulation pipeline 272 inside the evaporator 27, and the liquid supplementing device 9 comprises a liquid supplementing box 91 made of transparent materials. The liquid supplementing tank 91 is communicated with a pipeline between the refrigerating pump 8 and the inlet end of the secondary refrigerant circulation pipeline 272 inside the evaporator 27 through a liquid supplementing pipeline 92, and a liquid supplementing pump 93 for sending the secondary refrigerant liquid inside the liquid supplementing tank 91 into the secondary refrigerant circulation pipeline is installed on the liquid supplementing pipeline 92.

Referring to fig. 2, a plurality of baffles 266 are disposed inside the housing 261 from the top end of the housing 261 toward the bottom end of the housing 261. The adjacent two baffles 266 are staggered. The baffle 266 has a smaller area than the cross-section of the housing 261 so that when one end of the baffle 266 is secured to the side wall of the housing 261, the end of the baffle 266 opposite the end to which the baffle 266 and housing 261 are secured is spaced from the housing 261. Because the adjacent baffles 266 are arranged in a staggered manner, a bent path for the refrigerant to travel is formed in the shell 261 by the staggered baffles 266, so that the time of the refrigerant in the gas-liquid separator 26 is prolonged, and the gas-liquid separation effect is ensured. To facilitate the bottom end of the coolant flow path housing 261, the baffles 266 are each angled downwardly.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. the utility model provides a freezer refrigerating system, is including being located the outside cooling tower (1) of freezer, low temperature cooling water set (2) and being located the inside refrigerating plant of freezer, low temperature cooling water set (2) are including compressor (21), condenser (23), throttling element (25) and evaporimeter (27), the inside of evaporimeter (27) is provided with refrigerant circulation pipeline (271) and secondary refrigerant circulation pipeline (272), the exhaust end of compressor (21) passes through the pipeline and links to each other with the entering end of refrigerant circulation pipeline (271) of condenser (23), throttling element (25), evaporimeter (27) in proper order, the discharge end of refrigerant circulation pipeline (271) passes through the pipeline with the inlet end of compressor (21) and links to each other its characterized in that: the liquid inlet and the liquid outlet of the cooling tower (1) are respectively connected with the water outlet and the water inlet of the condenser (23) through pipelines, a cooling pump (5) is arranged on the pipeline between the liquid inlet of the cooling tower (1) and the water outlet of the condenser (23), the inlet end and the outlet end of the refrigerating device are respectively communicated with the inlet end and the outlet end of the secondary refrigerant circulation pipeline (272) through pipelines, and a freezing pump (8) is arranged on the pipeline between the outlet end of the refrigerating device and the inlet end of the secondary refrigerant circulation pipeline (272).

2. The freezer refrigeration system of claim 1, characterized by: the refrigerating device comprises an air cooler (3) and a refrigerating calandria (4) which are connected in parallel.

3. The freezer refrigeration system of claim 1, characterized by: a liquid supplementing device (9) is arranged between the refrigerating pump (8) and the inlet end of the secondary refrigerant circulation pipeline (272) of the evaporator (27), the liquid supplementing device (9) comprises a liquid supplementing box (91) communicated with the inlet end of the secondary refrigerant circulation pipeline (272) of the evaporator (27) through a liquid supplementing pipeline (92), and a liquid supplementing pump (93) is arranged on the liquid supplementing pipeline (92).

4. The freezer refrigeration system of claim 3, characterized by: the liquid supplementing box (91) is made of transparent materials and is used as the liquid supplementing box (91).

5. The freezer refrigeration system of claim 1, characterized by: an oil-gas separator (22) is arranged between the compressor (21) and the condenser (23), and an oil outlet of the oil-gas separator (22) is connected back to the compressor (21) through a pipeline.

6. the freezer refrigeration system of claim 1, characterized by: and a drying filter (24) is arranged on a pipeline between the condenser (23) and the throttling piece (25).

7. The freezer refrigeration system of claim 1, characterized by: the low-temperature water chilling unit (2) is characterized by further comprising a gas-liquid separator (26), the gas-liquid separator (26) comprises a hollow shell (261) located on a pipeline between the evaporator (27) and the throttling valve, an air outlet pipe (262) is arranged at the top end of the shell (261), a liquid outlet pipe (263) is arranged at the bottom end of the shell (261), an inlet pipe (264) and a liquid return pipe (265) are arranged on the side wall of the shell (261), the inlet pipe (264) of the gas-liquid separator (26) is communicated with the air outlet pipe (262) of the throttling element (25) through a pipeline, the liquid outlet pipe (263) of the gas-liquid separator (26) is communicated with the inlet end of a refrigerant circulating pipeline (271) inside the evaporator (27), the refrigerant outlet end of the refrigerant circulating pipeline (272) is communicated with the liquid return pipe (265) of the gas-liquid separator (26) through a pipeline, and the air outlet pipe (262) of the gas-liquid separator (26) is connected with The method is simple.

8. The freezer refrigeration system of claim 7, characterized by: a plurality of baffle plates (266) which are arranged in a staggered mode are arranged inside the shell (261), and a bent flow passage is formed between the baffle plates (266).

9. The freezer refrigeration system of claim 1, characterized by: the throttling element (25) is an expansion valve or a capillary tube.