CN211375867U - One-machine two-storeroom refrigerating device teaching experiment system - Google Patents

One-machine two-storeroom refrigerating device teaching experiment system Download PDF

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Publication number
CN211375867U
CN211375867U CN202020143941.1U CN202020143941U CN211375867U CN 211375867 U CN211375867 U CN 211375867U CN 202020143941 U CN202020143941 U CN 202020143941U CN 211375867 U CN211375867 U CN 211375867U
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China
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temperature
low
evaporation pressure
evaporator
cold room
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CN202020143941.1U
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Chinese (zh)
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孙志利
高泓源
张静
徐嘉沛
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Tianjin University of Commerce
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Tianjin University of Commerce
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Abstract

The utility model relates to a two storehouses refrigerating plant teaching experiment system aims at providing one kind and can carry out multiple regulation, simple structure's teaching experiment system. Consists of a refrigeration system and a cold room; the refrigerating system comprises a compressor, a condenser, a liquid storage device, a drying filter, a high evaporation pressure module and a low evaporation pressure module; the cold room comprises a low-temperature cold room and a high-temperature cold room; the high-temperature evaporator is arranged in the high-temperature cold room, and the low-temperature evaporator is arranged in the low-temperature cold room; the high evaporation pressure module and the low evaporation pressure module are connected in parallel, and an evaporation pressure regulating valve is installed at the outlet of the high-temperature evaporator. In order to prevent the occurrence of liquid impact accidents, a one-way valve is installed at the outlet of the low-temperature evaporator. By changing the opening, closing or opening degree adjustment of the evaporation pressure regulating valve, each manual regulating valve and the electric control valve, the operation of the one-machine two-warehouse refrigerating system can be accurately simulated, and the working principle and fault analysis of the one-machine two-warehouse refrigerating device can be further mastered.

Description

One-machine two-storeroom refrigerating device teaching experiment system
Technical Field
The utility model relates to a refrigeration technology field, more specifically say so, relate to a two storehouses refrigerating plant teaching experiment systems of a machine.
Background
With the continuous development of the logistics field, the refrigeration house plays an important role in the commodity circulation and storage process. Therefore, learning refrigerators and related knowledge are important for refrigeration professionals in colleges, middle-occupational schools and colleges.
When evaporators with different temperatures share one return gas pipeline, the evaporation pressure of a refrigerant of each evaporator is different, and the suction pressure of a compressor is consistent with the evaporation pressure of the cold room evaporator with the lowest evaporation temperature, so that how to ensure the running stability of a refrigerating system is a necessary condition for normal running of the refrigeration house. In the actual learning process of the refrigeration house refrigeration system, a student is required to perform actual operation training so as to improve the analysis and judgment of the student on faults occurring in the operation process of the refrigeration house refrigeration system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical defect who exists among the prior art, and provide one kind and can simulate a two storehouses refrigerating plant's operation process to can carry out multiple regulation, simple structure's teaching experiment system.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
a teaching experiment system of a refrigerating device with two storehouses in one machine consists of a refrigerating system and a cold room; the refrigerating system comprises a compressor, a condenser, a liquid storage device, a drying filter, a high evaporation pressure module and a low evaporation pressure module; the exhaust end of the compressor is sequentially connected with the condenser, the liquid storage device and the drying filter, the high evaporation pressure module and the low evaporation pressure module are connected in parallel, the outlet of the drying filter is respectively connected with one end of the inlet of the high evaporation pressure module and one end of the outlet of the low evaporation pressure module which are connected in parallel, and one end of the outlet of the high evaporation pressure module and one end of the outlet of the low evaporation pressure module which are connected in parallel are connected with the air suction end of the compressor; the high-evaporation-pressure module comprises a high-temperature electric control valve, a high-temperature thermal expansion valve and a high-temperature evaporator which are sequentially connected, an evaporation pressure regulating valve is installed at an outlet of the high-temperature evaporator, and a high-temperature flow meter is arranged at the front end of the high-temperature electric control valve; the low evaporation pressure module comprises a low-temperature electric control valve, a low-temperature thermal expansion valve and a low-temperature evaporator which are sequentially connected, a one-way valve is installed at an outlet of the low-temperature evaporator, and a low-temperature flow meter is arranged at the front end of the low-temperature electric control valve; the cold room comprises a low-temperature cold room and a high-temperature cold room; the high-temperature evaporator is arranged in the high-temperature cold room, and the low-temperature evaporator is arranged in the low-temperature cold room; the high-temperature evaporator and the low-temperature evaporator are respectively provided with a first temperature measuring instrument; and second temperature measuring instruments are respectively arranged between the compressor and the condenser, between the condenser and the liquid storage device, between the low-temperature electric control valve and the low-temperature thermostatic expansion valve, at the outlet of the low-temperature evaporator, between the high-temperature electric control valve and the high-temperature thermostatic expansion valve, at the inlet of the high-temperature evaporator, at the outlet of the high-temperature evaporator and between the one-way valve and the compressor.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a teaching experiment system sets up evaporating pressure regulating valve on the higher evaporimeter outlet pipeline of evaporating temperature. In addition, because the evaporators of the high-temperature cold room and the low-temperature cold room share the same return gas pipeline, in order to prevent the occurrence of liquid impact accidents, the one-way valve is arranged on the outlet pipeline of the evaporator of the low-temperature cold room, the operation of a refrigerating system of two storehouses of one machine can be accurately simulated, and the demonstration of liquid supply to the storehouses with two different evaporation temperature requirements by one machine set and the study on the structure, the setting and the adjusting principle of the evaporation pressure adjusting valve can be carried out.
Drawings
Fig. 1 shows the principle diagram of the teaching experiment system of the refrigerating device for two storehouses of the utility model.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model discloses a schematic diagram of a two storehouses refrigerating plant teaching experiment system is shown in figure 1, comprises refrigerating system and cold room. The refrigerating system comprises a compressor 1, a condenser 3, a liquid storage device 2, a drying filter 13, a high evaporation pressure module and a low evaporation pressure module. Compressor 1's exhaust end with condenser 3, reservoir 2, drier-filter 13 connect gradually, high evaporating pressure module and low evaporating pressure module parallel connection, drier-filter 13's export respectively with the parallelly connected import one end of high evaporating pressure module and low evaporating pressure module is connected, the parallelly connected export one end of high evaporating pressure module and low evaporating pressure module with compressor 1's the end of breathing in is connected. The high evaporation pressure module comprises a high-temperature electric control valve 7, a high-temperature thermal expansion valve 6 and a high-temperature evaporator 5 which are sequentially connected, an evaporation pressure regulating valve 4 is installed at an outlet of the high-temperature evaporator 5, and a high-temperature flow meter 8 is arranged at the front end of the high-temperature electric control valve 7. The low evaporation pressure module comprises a low-temperature electric control valve, a low-temperature thermal expansion valve 11 and a low-temperature evaporator 12 which are sequentially connected, a one-way valve 15 is installed at an outlet of the low-temperature evaporator 12, and a low-temperature flowmeter 10 is arranged at the front end of the low-temperature electric control valve. The cold room comprises a low-temperature cold room and a high-temperature cold room, the high-temperature evaporator 5 is arranged in the high-temperature cold room, and the low-temperature evaporator 12 is arranged in the low-temperature cold room. The high temperature evaporator 5 and the low temperature evaporator 12 are respectively provided with a first temperature measuring instrument 14. And second temperature measuring instruments 16 are respectively arranged between the compressor 1 and the condenser 3, between the condenser 3 and the liquid storage device 2, between the low-temperature electric control valve and the low-temperature thermostatic expansion valve 11, at an outlet of the low-temperature evaporator 12, between the high-temperature electric control valve 7 and the high-temperature thermostatic expansion valve 6, at an inlet of the high-temperature evaporator 5, at an outlet of the high-temperature evaporator 5 and between the check valve 15 and the compressor 1. The first temperature measuring instrument 14 and the second temperature measuring instrument 16 are digital thermometers or temperature sensors.
And manual regulating valves 9 are respectively arranged at the front ends of the high-temperature flow meter 8 and the low-temperature flow meter 10, at the two ends of the high-temperature evaporator 5 and at the two ends of the low-temperature evaporator 12.
The refrigerant discharged from the exhaust end of the compressor 1 passes through the condenser 3, the liquid storage device 2 and the drying filter 13 in sequence and then is divided into two paths, wherein one path enters the high-temperature evaporator 5 through the manual regulating valve, the high-temperature flow meter 8, the high-temperature electric control valve 7, the high-temperature thermostatic expansion valve 6 and the manual regulating valve, absorbs heat in the high-temperature evaporator 5 for evaporation, and then enters the evaporation pressure regulating valve 4 through the manual regulating valve; the other path enters a low-temperature evaporator 12 through a manual regulating valve, a low-temperature flowmeter 10, a low-temperature electric control valve, a low-temperature thermal expansion valve 11 and the manual regulating valve, absorbs heat in the low-temperature evaporator 12 for evaporation, then enters a one-way valve 15 through the manual regulating valve, and refrigerant flowing out of the one-way valve 15 and refrigerant flowing out of an evaporation pressure regulating valve 4 enter the air suction end of the compressor 1 together to complete primary circulation. In the experimental process, the working principle and the fault analysis of the refrigerating device in the two storehouses of one machine are further mastered by changing the opening, closing or opening degree regulation of the evaporation pressure regulating valve, each manual regulating valve and the electric control valve.
The utility model discloses a two storehouses of a machine refrigerating plant teaching experiment system is supplied cold volume by a refrigeration compression condensing unit to two different evaporating temperature's cold simultaneously, when the evaporimeter of different temperatures sharing return gas pipeline, because the refrigerant evaporating pressure diverse of every evaporimeter, and the suction pressure of compressor is the evaporating pressure who keeps unanimous with the cold room evaporimeter that evaporating temperature is the lowest. In order to maintain the evaporation temperature (evaporation pressure) necessary for each cold room during the operation of the refrigeration system, an evaporation pressure regulating valve is provided on the outlet line of the evaporator having a higher evaporation temperature. In addition, because the evaporators of the high-temperature and low-temperature cold rooms share the same return gas pipeline, in order to prevent the occurrence of liquid impact accidents, the experimental device is provided with a one-way valve on the outlet pipeline of the evaporator of the low-temperature cold room. The demonstration of supplying liquid to two different evaporation temperature requirement libraries by one unit and the study of the structure, the setting and the regulation principle of the evaporation pressure regulating valve can be carried out.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (3)

1. A teaching experiment system of a refrigerating device with two storehouses is characterized by comprising a refrigerating system and a cold room; the refrigerating system comprises a compressor, a condenser, a liquid storage device, a drying filter, a high evaporation pressure module and a low evaporation pressure module; the exhaust end of the compressor is sequentially connected with the condenser, the liquid storage device and the drying filter, the high evaporation pressure module and the low evaporation pressure module are connected in parallel, the outlet of the drying filter is respectively connected with one end of the inlet of the high evaporation pressure module and one end of the outlet of the low evaporation pressure module which are connected in parallel, and one end of the outlet of the high evaporation pressure module and one end of the outlet of the low evaporation pressure module which are connected in parallel are connected with the air suction end of the compressor; the high-evaporation-pressure module comprises a high-temperature electric control valve, a high-temperature thermal expansion valve and a high-temperature evaporator which are sequentially connected, an evaporation pressure regulating valve is installed at an outlet of the high-temperature evaporator, and a high-temperature flow meter is arranged at the front end of the high-temperature electric control valve; the low evaporation pressure module comprises a low-temperature electric control valve, a low-temperature thermal expansion valve and a low-temperature evaporator which are sequentially connected, a one-way valve is installed at an outlet of the low-temperature evaporator, and a low-temperature flow meter is arranged at the front end of the low-temperature electric control valve; the cold room comprises a low-temperature cold room and a high-temperature cold room; the high-temperature evaporator is arranged in the high-temperature cold room, and the low-temperature evaporator is arranged in the low-temperature cold room; the high-temperature evaporator and the low-temperature evaporator are respectively provided with a first temperature measuring instrument; and second temperature measuring instruments are respectively arranged between the compressor and the condenser, between the condenser and the liquid storage device, between the low-temperature electric control valve and the low-temperature thermostatic expansion valve, at the outlet of the low-temperature evaporator, between the high-temperature electric control valve and the high-temperature thermostatic expansion valve, at the inlet of the high-temperature evaporator, at the outlet of the high-temperature evaporator and between the one-way valve and the compressor.
2. The one-machine two-warehouse refrigerating device teaching experiment system as claimed in claim 1, wherein manual regulating valves are respectively installed at the front end of the high-temperature flow meter, the front end of the low-temperature flow meter, the two ends of the high-temperature evaporator and the two ends of the low-temperature evaporator.
3. The one-machine two-warehouse refrigerating device teaching experiment system as claimed in claim 1, wherein the first temperature measuring instrument and the second temperature measuring instrument are digital thermometers or temperature sensors.
CN202020143941.1U 2020-01-22 2020-01-22 One-machine two-storeroom refrigerating device teaching experiment system Active CN211375867U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020143941.1U CN211375867U (en) 2020-01-22 2020-01-22 One-machine two-storeroom refrigerating device teaching experiment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020143941.1U CN211375867U (en) 2020-01-22 2020-01-22 One-machine two-storeroom refrigerating device teaching experiment system

Publications (1)

Publication Number Publication Date
CN211375867U true CN211375867U (en) 2020-08-28

Family

ID=72150469

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020143941.1U Active CN211375867U (en) 2020-01-22 2020-01-22 One-machine two-storeroom refrigerating device teaching experiment system

Country Status (1)

Country Link
CN (1) CN211375867U (en)

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