CN105206166A - Two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive experimental table - Google Patents
Two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive experimental table Download PDFInfo
- Publication number
- CN105206166A CN105206166A CN201510701552.XA CN201510701552A CN105206166A CN 105206166 A CN105206166 A CN 105206166A CN 201510701552 A CN201510701552 A CN 201510701552A CN 105206166 A CN105206166 A CN 105206166A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- outlet
- valve
- import
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 542
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 271
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 271
- 238000001816 cooling Methods 0.000 title abstract description 32
- 238000005057 refrigeration Methods 0.000 title abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 239000003507 refrigerant Substances 0.000 claims abstract description 122
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000002474 experimental method Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims description 35
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 3
- 238000009833 condensation Methods 0.000 abstract description 20
- 230000005494 condensation Effects 0.000 abstract description 20
- 238000011084 recovery Methods 0.000 abstract description 18
- 238000004321 preservation Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 44
- 238000009413 insulation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
本发明公开了一种两级节流不完全冷却二氧化碳制冷/热泵综合实验台。本发明由水系统和冷媒系统构成，包括二氧化碳低压压缩机、二氧化碳油分离器一、二氧化碳气液分离器一、二，二氧化碳高压压缩机、二氧化碳油分离器二、冷媒截止阀组，二氧化碳管壳式换热器一、二，二氧化碳翅片管换热器一、二，电加热器一、二，单式空调机一、二，水泵一、二，第一、二保温水箱，流量计组和干燥过滤器等；操作相应的冷媒截止阀的开关状态实现模拟两级节流中间不完全冷却的双级跨临界二氧化碳风冷制冷系统、空气源热泵、水冷式制冷系统、空气源冷凝热回收系统、风冷式冷水机组系统、水源热泵、水冷式冷水机组系统和水源冷凝热回收系统。
The invention discloses a two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive experiment platform. The invention consists of a water system and a refrigerant system, including a carbon dioxide low pressure compressor, a carbon dioxide oil separator 1, a carbon dioxide gas-liquid separator 1 and 2, a carbon dioxide high pressure compressor, a carbon dioxide oil separator 2, a refrigerant stop valve group, and a carbon dioxide shell One and two type heat exchangers, one and two carbon dioxide finned tube heat exchangers, one and two electric heaters, one and two single air conditioners, one and two water pumps, one and two heat preservation water tanks, flow meter group and Drying filter, etc.; operate the switch state of the corresponding refrigerant cut-off valve to realize a two-stage transcritical carbon dioxide air-cooled refrigeration system that simulates two-stage throttling with incomplete cooling in the middle, air source heat pump, water-cooled refrigeration system, and air source condensation heat recovery system , Air-cooled chiller system, water source heat pump, water-cooled chiller system and water source condensation heat recovery system.
Description
技术领域technical field
本发明涉及一种热泵系统，尤其涉及一种两级节流不完全冷却二氧化碳制冷/热泵综合实验台。The invention relates to a heat pump system, in particular to a two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive experiment platform.
背景技术Background technique
目前，高校使用的双级跨临界二氧化碳实验系统大多都是简单的热泵系统，其功能比较单一，设备的利用率较低，在无形中便造成了巨大的资源浪费；同时分散的、功能单一的试验台会占用较大的实验室面积；各高校急需将功能单一的热泵系统进行整合，以减小占地面积，提高设备的利用率，降低学校在实验方面的浪费，提升学校实验设备的综合利用率。At present, most of the two-stage transcritical carbon dioxide experimental systems used in colleges and universities are simple heat pump systems, which have relatively single functions and low equipment utilization, which has caused a huge waste of resources invisibly; at the same time, scattered and single-function The test bench will occupy a large laboratory area; colleges and universities urgently need to integrate heat pump systems with single functions to reduce the floor area, improve the utilization rate of equipment, reduce the waste of the school in experiments, and improve the comprehensiveness of the school's experimental equipment. utilization rate.
发明内容Contents of the invention
针对上述现有技术，本发明提供一种两级节流不完全冷却二氧化碳制冷/热泵综合实验台，可以模拟制冷工况和制热工况，具有两级节流中间不完全冷却双级跨临界二氧化碳风冷制冷系统、空气源热泵、水冷式制冷系统、空气源冷凝热回收系统、风冷式冷水机组系统、水源热泵、水冷式冷水机组系统和水源冷凝热回收系统等功能。Aiming at the above-mentioned prior art, the present invention provides a two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive test bench, which can simulate refrigeration and heating conditions, and has two-stage throttling and incomplete cooling in the middle of a two-stage transcritical Carbon dioxide air-cooled refrigeration system, air-source heat pump, water-cooled refrigeration system, air-source condensation heat recovery system, air-cooled chiller system, water-source heat pump, water-cooled chiller system, and water-source condensation heat recovery system.
为了解决上述技术问题，本发明两级节流不完全冷却二氧化碳制冷/热泵综合实验台予以实现的技术方案是：包括二氧化碳低压压缩机、二氧化碳油分离器一、冷媒截止阀组，二氧化碳气液分离器一、二氧化碳高压压缩机、二氧化碳油分离器二、二氧化碳管壳式换热器一、二氧化碳管壳式换热器二、二氧化碳翅片管换热器一、二氧化碳翅片管换热器二、电加热器一、电加热器二、单式空调机一、单式空调机二、水泵一、水泵二、第一保温水箱、第二保温水箱，二氧化碳气液分离器二、流量计组、干燥过滤器、节流阀一和节流阀二；In order to solve the above-mentioned technical problems, the technical scheme realized by the two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive test bench of the present invention is: comprising carbon dioxide low-pressure compressor, carbon dioxide oil separator 1, refrigerant shut-off valve group, carbon dioxide gas-liquid separation One, carbon dioxide high-pressure compressor, carbon dioxide oil separator two, carbon dioxide shell-and-tube heat exchanger one, carbon dioxide shell-and-tube heat exchanger two, carbon dioxide finned tube heat exchanger one, carbon dioxide finned tube heat exchanger two, Electric heater 1, electric heater 2, single air conditioner 1, single air conditioner 2, water pump 1, water pump 2, first heat preservation water tank, second heat preservation water tank, carbon dioxide gas-liquid separator 2, flow meter group, drying filter, throttle valve one and throttle valve two;
所述冷媒截止阀组包括4个冷媒截止阀，即冷媒截止阀一8、冷媒截止阀二9、冷媒截止阀三26和冷媒截止阀四27，所述冷媒截止阀的安装位置均在换热器的冷媒进口处；The refrigerant shut-off valve group includes 4 refrigerant shut-off valves, namely refrigerant shut-off valve 1 8, refrigerant shut-off valve 2 9, refrigerant shut-off valve 3 26 and refrigerant shut-off valve 4 27, and the installation positions of the refrigerant shut-off valves are all in the heat exchange The refrigerant inlet of the device;
所述二氧化碳低压压缩机1有1个出口③、1号进口①和2号进口②；The carbon dioxide low-pressure compressor 1 has 1 outlet ③, No. 1 inlet ① and No. 2 inlet ②;
所述二氧化碳油分离器一3有1个进口③、1号出口①和2号出口②；The carbon dioxide oil separator-3 has 1 inlet ③, No. 1 outlet ① and No. 2 outlet ②;
所述二氧化碳气液分离器一4有1个进口③、1号出口①和2号出口②；The carbon dioxide gas-liquid separator-4 has 1 inlet ③, No. 1 outlet ① and No. 2 outlet ②;
所述二氧化碳高压压缩机6有1个出口③、1号进口①和2号进口②；The carbon dioxide high-pressure compressor 6 has 1 outlet ③, No. 1 inlet ① and No. 2 inlet ②;
所述二氧化碳油分离器二7有1个进口③、1号出口①和2号出口②；The carbon dioxide oil separator 2 7 has 1 inlet ③, No. 1 outlet ① and No. 2 outlet ②;
所述二氧化碳管壳式换热器一13和二氧化碳管壳式换热器二25均分别有1个冷媒进口①、1个冷媒出口②、1个水进口③和1个水出口④；The carbon dioxide shell-and-tube heat exchanger one 13 and the carbon dioxide shell-and-tube heat exchanger two 25 respectively have a refrigerant inlet ①, a refrigerant outlet ②, a water inlet ③ and a water outlet ④;
所述二氧化碳低压压缩机1的出口③接二氧化碳油分离器一3的进气口③，1号进口①接二氧化碳气液分离器二31的排气口；2号进口②通过阀门2与二氧化碳油分离器3的回油口即2号出口②相连接；The outlet ③ of the carbon dioxide low-pressure compressor 1 is connected to the air inlet ③ of the carbon dioxide oil separator 3, and the No. 1 inlet ① is connected to the exhaust port of the carbon dioxide gas-liquid separator 2 31; No. 2 inlet ② passes through the valve 2 and the carbon dioxide oil The oil return port of separator 3 is connected with No. 2 outlet ②;
所述二氧化碳油分离器一3的进气口③接二氧化碳低压压缩机1的排气口③；1号出口①与二氧化碳高压压缩机5的1号进口①相连接；2号出口②通过阀门一2与二氧化碳低压压缩机1的回油口即2号进口②相连接；The air inlet ③ of the carbon dioxide oil separator-3 is connected to the exhaust port ③ of the carbon dioxide low-pressure compressor 1; the No. 1 outlet ① is connected with the No. 1 inlet ① of the carbon dioxide high-pressure compressor 5; the No. 2 outlet ② passes through the valve ① 2 Connect with the oil return port of the carbon dioxide low-pressure compressor 1, that is, the No. 2 inlet ②;
所述二氧化碳气液分离器一4的1号出口①接二氧化碳高压压缩机5的1号进口①；2号出口②接节流阀二21的进口；其进口③接节流阀一20的出口；No. 1 outlet ① of the carbon dioxide gas-liquid separator-4 is connected to the No. 1 inlet ① of the carbon dioxide high-pressure compressor 5; No. 2 outlet ② is connected to the inlet of the throttle valve 2 21; its inlet ③ is connected to the outlet of the throttle valve 1 20 ;
所述二氧化碳高压压缩机5的2号进口②通过阀门二6与二氧化碳油分离器二7的2号出口②相连接；出口③与二氧化碳油分离器二7的进口③相连接；The No. 2 inlet of the carbon dioxide high-pressure compressor 5 is connected with the No. 2 outlet of the carbon dioxide oil separator 2 7 through the valve 2 6; the outlet ③ is connected with the inlet ③ of the carbon dioxide oil separator 2 7;
所述二氧化碳油分离器二7的进气口③接二氧化碳高压压缩机6的排气口③；1号出口①分别通过冷媒截止阀一8和冷媒截止阀二9与二氧化碳翅片管换热器一12和二氧化碳管壳式换热器一13的冷媒进口①相连接；2号出口②通过阀门8与二氧化碳高压压缩机6的回油口即2号进口②相连接；The air inlet ③ of the carbon dioxide oil separator 2 7 is connected to the exhaust port ③ of the carbon dioxide high-pressure compressor 6; the No. 1 outlet ① respectively passes through the refrigerant shut-off valve 1 8 and the refrigerant shut-off valve 2 9 and the carbon dioxide finned tube heat exchanger -12 is connected to the refrigerant inlet ① of the carbon dioxide shell-and-tube heat exchanger -13; the No. 2 outlet ② is connected to the oil return port of the carbon dioxide high-pressure compressor 6 through the valve 8, that is, the No. 2 inlet ②;
所述冷媒截止阀一8的出口接二氧化碳翅片管换热器一12的进口；所述二氧化碳翅片管换热器一12的出口接流量计二17的进口；所述流量计二17的出口接干燥过滤器18的进口；所述干燥过滤器18的出口接电磁阀19的进口；所述电磁阀19的出口接节流阀一20的进口；所述节流阀一20的出口接二氧化碳气液分离器一4的进口③；所述二氧化碳气液分离器一4的2号出口②接节流阀二21的进口；所述节流阀二21的出口接冷媒截止阀四27的进口；所述冷媒截止阀四27的出口接二氧化碳翅片管换热器二28的进口；所述二氧化碳翅片管换热器二28的出口接二氧化碳气液分离器31的进口；所述节流阀二21的出口接冷媒截止阀三26的进口；所述冷媒截止阀三26的出口接二氧化碳管壳式换热器二25的进口①；The outlet of the refrigerant stop valve one 8 is connected to the inlet of the carbon dioxide finned tube heat exchanger one 12; the outlet of the carbon dioxide finned tube heat exchanger one 12 is connected to the inlet of the flowmeter two 17; the flowmeter two 17 The outlet connects the inlet of the drier filter 18; the outlet of the drier filter 18 connects the inlet of the solenoid valve 19; the outlet of the solenoid valve 19 connects the inlet of the throttle valve one 20; the outlet of the throttle valve one 20 connects The inlet ③ of the carbon dioxide gas-liquid separator one 4; the No. 2 outlet ② of the carbon dioxide gas-liquid separator one 4 is connected to the inlet of the throttle valve two 21; the outlet of the throttle valve two 21 is connected to the refrigerant shut-off valve four 27 Import; the outlet of the refrigerant stop valve four 27 is connected to the inlet of the carbon dioxide finned tube heat exchanger two 28; the outlet of the carbon dioxide finned tube heat exchanger two 28 is connected to the inlet of the carbon dioxide gas-liquid separator 31; the section The outlet of the flow valve two 21 is connected to the inlet of the refrigerant shut-off valve three 26; the outlet of the refrigerant shut-off valve three 26 is connected to the inlet of the carbon dioxide shell-and-tube heat exchanger two 25;
所述二氧化碳管壳式换热器一13的冷媒进口①通过冷媒截止阀二9与二氧化碳油分离器二7的1号出口①相连接；冷媒出口②接流量计二17的进口；冷却水进口③通过水泵一14与第一保温水箱16相连接；冷却水的出口④接流量计一15的进口；The refrigerant inlet ① of the carbon dioxide shell-and-tube heat exchanger 13 is connected with the No. 1 outlet ① of the carbon dioxide oil separator 2 7 through the refrigerant shut-off valve 9; the refrigerant outlet ② is connected to the inlet of the flow meter 17; the cooling water inlet ③Connect with the first heat preservation water tank 16 through water pump 14; the outlet of cooling water ④ connects the inlet of flow meter 15;
所述第一保温水箱16的出水口与水泵一14的进口相连接；所述水泵一14的排水口接二氧化碳管壳式换热器一13壳侧的进水口③；所述二氧化碳管壳式换热器一13壳侧的出水口④接流量计一15的进水口；所述流量计一15的出水口与第一保温水箱16的进水口相连接；The water outlet of the first thermal insulation water tank 16 is connected with the inlet of the water pump-14; the water outlet of the water pump-14 is connected to the water inlet ③ on the shell side of the carbon dioxide shell-and-tube heat exchanger-13; the carbon dioxide shell-and-tube heat exchanger The water outlet on the shell side of the heat exchanger one 13 is connected to the water inlet of the flowmeter one 15; the water outlet of the flowmeter one 15 is connected with the water inlet of the first thermal insulation water tank 16;
所述二氧化碳管壳式换热器二25的冷媒进口①通过冷媒截止阀三26与节流阀二21相连接；冷媒出口②接二氧化碳气液分离器31的进口；进水口③通过水泵二23与第二保温水箱22相连接；出水口④接流量计三24的进口。The refrigerant inlet ① of the carbon dioxide shell-and-tube heat exchanger 25 is connected to the throttle valve 2 21 through the refrigerant shut-off valve 26; the refrigerant outlet ② is connected to the inlet of the carbon dioxide gas-liquid separator 31; It is connected with the second heat preservation water tank 22; the water outlet ④ connects the inlet of the flow meter three 24.
所述第二保温水箱22的出水口与水泵二23的进口相连接；所述水泵二13的排水口接二氧化碳管壳式换热器二25壳侧的进水口③；所述二氧化碳管壳式换热器二25壳侧的出水口④接流量计二24的进水口；所述流量计二24的出水口与第二保温水箱22的进水口相连接。The water outlet of the second thermal insulation water tank 22 is connected to the inlet of the water pump 23; the water outlet of the water pump 213 is connected to the water inlet ③ on the shell side of the carbon dioxide shell-and-tube heat exchanger 225; the carbon dioxide shell-and-tube heat exchanger The water outlet ④ on the shell side of the heat exchanger two 25 is connected to the water inlet of the flow meter two 24;
其中单式空调机一10、电加热器一11和二氧化碳翅片管换热器一12安装于同一保温空间内；单式空调机二30、电加热器二29和二氧化碳翅片管换热器二28安装于另一个保温空间内。Among them, the single air conditioner 10, the electric heater 11 and the carbon dioxide finned tube heat exchanger 12 are installed in the same insulation space; the single air conditioner 2 30, the electric heater 29 and the carbon dioxide finned tube heat exchanger Two 28 are installed in another insulation space.
通过控制冷媒截止阀组中冷媒截止阀的开关状态来进行不同实验状态之间的切换；通过控制单式空调机一10、单式空调机二30、电加热器一11和电加热器二29使所模拟库温保持恒定；依据系统实验目的的不同，通过控制单式空调机一10、单式空调机二30、电加热器一11、电加热器二29、第一保温水箱16和第二保温水箱22来模拟制冷工况和制热工况；所述二氧化碳翅片管换热器一12、二氧化碳翅片管换热器二28、二氧化碳管壳式换热器一13和二氧化碳管壳式换热器二25用于实现模拟两级节流中间不完全冷却的双级跨临界形式的二氧化碳风冷式制冷系统、水冷式制冷系统、风冷式冷水机组系统、水冷式冷水机组系统、空气源热泵系统、空气源冷凝热回收系统、水源热泵系统和水源冷凝热回收系统。Switch between different experimental states by controlling the switching state of the refrigerant shut-off valve in the refrigerant shut-off valve group; by controlling the single air conditioner one 10, the single air conditioner two 30, the electric heater one 11 and the electric heater two 29 Keep the simulated storage temperature constant; according to the different purposes of the system experiment, by controlling single air conditioner one 10, single air conditioner two 30, electric heater one 11, electric heater two 29, the first heat preservation water tank 16 and the second Two thermal insulation water tanks 22 are used to simulate refrigeration and heating conditions; the carbon dioxide finned tube heat exchanger one 12, the carbon dioxide finned tube heat exchanger two 28, the carbon dioxide shell and tube heat exchanger one 13 and the carbon dioxide shell and tube Type heat exchanger 225 is used to realize the two-stage transcritical carbon dioxide air-cooled refrigeration system, water-cooled refrigeration system, air-cooled chiller system, water-cooled chiller system, Air source heat pump system, air source condensation heat recovery system, water source heat pump system and water source condensation heat recovery system.
另一方面，本发明一种两级节流不完全冷却二氧化碳制冷/热泵综合实验台及其实验方法利用上述新型多功能热泵、热泵热水器和制冷机组实验台在下述系统之间进行切换，用以模拟制冷工况和制热工况。On the other hand, a two-stage throttling incompletely cooled carbon dioxide refrigeration/heat pump comprehensive experimental platform and its experimental method of the present invention use the above-mentioned new multifunctional heat pump, heat pump water heater and refrigerating unit experimental platform to switch between the following systems for Simulate cooling and heating conditions.
1)两级节流中间不完全冷却的双级跨临界二氧化碳风冷式制冷(空气源热泵)系统：关闭冷媒截止阀二9和冷媒截止阀三26，开启冷媒截止阀一8和冷媒截止阀四27；1) Two-stage transcritical carbon dioxide air-cooled refrigeration (air source heat pump) system with two-stage throttling and incomplete cooling in the middle: close refrigerant shut-off valve 2 9 and refrigerant shut-off valve 3 26, open refrigerant shut-off valve 1 8 and refrigerant shut-off valve 427;
2)两级节流中间不完全冷却的双级跨临界二氧化碳水冷式制冷(空气源冷凝热回收)系统：关闭冷媒截止阀一8和冷媒截止阀三26，开启冷媒截止阀二9和冷媒截止阀四27；2) Two-stage transcritical carbon dioxide water-cooled refrigeration (air source condensation heat recovery) system with two-stage throttling and incomplete cooling in the middle: close refrigerant stop valve 1 8 and refrigerant stop valve 3 26, open refrigerant stop valve 2 9 and refrigerant stop valve valve four 27;
3)两级节流中间不完全冷却的双级跨临界二氧化碳风冷式冷水机组(水源热泵)系统：关闭冷媒截止阀二9和冷媒截止阀四27，开启冷媒截止阀一8和冷媒截止阀三26；3) Two-stage transcritical carbon dioxide air-cooled chiller (water source heat pump) system with two-stage throttling and incomplete cooling in the middle: close refrigerant shut-off valve 2 9 and refrigerant shut-off valve 4 27, open refrigerant shut-off valve 1 8 and refrigerant shut-off valve 326;
4)两级节流中间不完全冷却的双级跨临界二氧化碳水冷式冷水机组(水源冷凝热回收)系统：关闭冷媒截止阀一8和冷媒截止阀四27，开启冷媒截止阀二9和冷媒截止阀三26；4) Two-stage transcritical carbon dioxide water-cooled chiller (water source condensation heat recovery) system with two-stage throttling and incomplete cooling in the middle: close refrigerant stop valve 1 8 and refrigerant stop valve 4 27, open refrigerant stop valve 2 9 and refrigerant stop valve three 26;
所述制冷、制热工况的切换主要通过控制单式空调机组和电加热器组对模拟库温进行调节，从而实现其相互切换。The switching between the cooling and heating working conditions is mainly achieved by controlling the single-type air-conditioning unit and the electric heater group to adjust the simulated storage temperature, so as to realize their mutual switching.
在所述不同的系统中，阀门一2和阀门二6的选取依据实验目的的不同进行区别化选取，阀门一2和阀门二6的开启或关闭分别依据二氧化碳低压压缩机1和二氧化碳高压压缩机5的润滑油的多少进行操作。节流阀一20和节流阀二21在不同的系统中均处于开启的状态，其开启的大小视系统的循环性能进行调整。In the different systems, the selection of valve one 2 and valve two 6 is differentiated according to the purpose of the experiment, and the opening or closing of valve one 2 and valve two 6 is based on the carbon dioxide low pressure compressor 1 and carbon dioxide high pressure compressor respectively 5 how much lubricating oil to operate. Throttle valve 1 20 and throttle valve 2 21 are all in an open state in different systems, and the opening size is adjusted depending on the cycle performance of the system.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
本发明克服上述缺点，本发明具有2个独立的水系统，能够实现不同形式的热泵、热水器和制冷机组系统。通过相应的冷媒截止阀的切换可实现模拟两级节流中间不完全冷却双级跨临界的二氧化碳风冷式制冷、水冷式制冷、风冷式冷水机组、水冷式冷水机组、空气源热泵、空气源冷凝热回收系统、水源热泵和水源冷凝热回收等不同的系统。The present invention overcomes the above-mentioned shortcomings. The present invention has two independent water systems, and can realize different forms of heat pumps, water heaters and refrigerating unit systems. Through the switching of the corresponding refrigerant cut-off valve, the simulation of two-stage throttling and incomplete cooling in the middle can be realized. Two-stage transcritical carbon dioxide air-cooled refrigeration, water-cooled refrigeration, air-cooled chillers, water-cooled chillers, air source heat pumps, air There are different systems such as source condensation heat recovery system, water source heat pump and water source condensation heat recovery.
附图说明Description of drawings
图1是本发明两级节流不完全冷却二氧化碳制冷/热泵综合实验台原理图；Fig. 1 is the schematic diagram of the present invention's two-stage throttling incompletely cooled carbon dioxide refrigeration/heat pump comprehensive test bench;
图2是两级节流中间不完全冷却的双级跨临界二氧化碳风冷式制冷(空气源热泵)系统原理图；Figure 2 is a schematic diagram of a two-stage transcritical carbon dioxide air-cooled refrigeration (air source heat pump) system with incomplete cooling in the middle of two-stage throttling;
图3是两级节流中间不完全冷却的双级跨临界二氧化碳水冷式制冷(空气源冷凝热回收)系统图；Fig. 3 is a system diagram of two-stage transcritical carbon dioxide water-cooled refrigeration (air source condensation heat recovery) with two-stage throttling and incomplete cooling in the middle;
图4是两级节流中间不完全冷却的双级跨临界二氧化碳风冷式冷水机组(水源热泵)系统图；Fig. 4 is a system diagram of a two-stage transcritical carbon dioxide air-cooled chiller (water source heat pump) with incomplete cooling in the middle of two-stage throttling;
图5是两级节流中间不完全冷却的双级跨临界二氧化碳水冷式冷水机组(水源冷凝热回收)系统图。Fig. 5 is a system diagram of a two-stage transcritical carbon dioxide water-cooled chiller (water source condensation heat recovery) with two-stage throttling and incomplete cooling in the middle.
具体实施方式Detailed ways
下面结合具体实施方式对本发明作进一步详细地描述。The present invention will be further described in detail below in combination with specific embodiments.
如图1所示，本发明是两级节流不完全冷却二氧化碳制冷/热泵综合实验台，包括二氧化碳低压压缩机1、阀门一2、二氧化碳油分离器一3、二氧化碳气液分离器一4、二氧化碳高压压缩机5、阀门二6、二氧化碳油分离器二7、冷媒截止阀组、单式空调机一10、电加热器一11、二氧化碳翅片管换热器一12、二氧化碳管壳式换热器一13、水泵一14、流量计一15、第一保温水箱16、流量计二17、干燥过滤器18、电磁阀19、节流阀一20、节流阀二21、第二保温水箱22、水泵二23、流量计三24、二氧化碳管壳式换热器二25、二氧化碳翅片管换热器二28、电加热器二29、单式空调机二30、二氧化碳气液分离器二31；所述二氧化碳低压压缩机1有1个出口③、1号进口①和2号进口②；所述二氧化碳油分离器一3有1个进口③、1号出口①和2号出口②；所述二氧化碳气液分离器一4有1个进口③、1号出口①和2号出口②；所述二氧化碳高压压缩机6有1个出口③、1号进口①和2号进口②；所述二氧化碳油分离器二7有1个进口③、1号出口①和2号出口②；所述二氧化碳管壳式换热器一13和二氧化碳管壳式换热器二25均分别有1个冷媒进口①、1个冷媒出口②、1个水进口③和1个水出口④；As shown in Figure 1, the present invention is a two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive test bench, including a carbon dioxide low-pressure compressor 1, a valve-2, a carbon dioxide oil separator-3, a carbon dioxide gas-liquid separator-4, Carbon dioxide high-pressure compressor 5, valve 2 6, carbon dioxide oil separator 2 7, refrigerant cut-off valve group, single air conditioner 10, electric heater 11, carbon dioxide finned tube heat exchanger 12, carbon dioxide shell and tube exchanger Heater one 13, water pump one 14, flow meter one 15, first heat preservation water tank 16, flow meter two 17, dry filter 18, solenoid valve 19, throttle valve one 20, throttle valve two 21, second heat preservation water tank 22. Water pump 2 23, flow meter 3 24, carbon dioxide shell and tube heat exchanger 2 25, carbon dioxide finned tube heat exchanger 2 28, electric heater 2 29, single air conditioner 2 30, carbon dioxide gas-liquid separator 2 31; the carbon dioxide low-pressure compressor 1 has 1 outlet ③, No. 1 inlet ① and No. 2 inlet ②; the carbon dioxide oil separator-3 has 1 inlet ③, No. 1 outlet ① and No. 2 outlet ②; The carbon dioxide gas-liquid separator-4 has 1 inlet ③, No. 1 outlet ① and No. 2 outlet ②; the carbon dioxide high-pressure compressor 6 has 1 outlet ③, No. 1 inlet ① and No. 2 inlet ②; The oil separator 27 has 1 inlet ③, the 1st outlet ① and the 2nd outlet ②; the carbon dioxide shell-and-tube heat exchanger 13 and the carbon dioxide shell-and-tube heat exchanger 225 each have 1 refrigerant inlet ① , 1 refrigerant outlet ②, 1 water inlet ③ and 1 water outlet ④;
所述冷媒截止阀组包括冷媒截止阀一8、冷媒截止阀二9、冷媒截止阀三26和冷媒截止阀四27；其中：所述冷媒截止阀一8连接在二氧化碳油分离器二7的出口①和风冷式二氧化碳翅片管换热器一12的进口之间；所述冷媒截止阀二9连接在二氧化碳油分离器7的出口①和二氧化碳管壳式换热器一13冷媒进口①之间；所述冷媒截止阀三26连接在节流阀二21出口和二氧化碳管壳式换热器二25冷媒的进口①之间；所述冷媒截止阀四27连接在节流阀二21出口和二氧化碳翅片管换热器二28冷媒的进口之间。The refrigerant shut-off valve group includes refrigerant shut-off valve one 8, refrigerant shut-off valve two 9, refrigerant shut-off valve three 26 and refrigerant shut-off valve four 27; wherein: the refrigerant shut-off valve one 8 is connected to the outlet of the carbon dioxide oil separator two 7 ① between the inlet of the air-cooled carbon dioxide finned tube heat exchanger 12; the refrigerant shut-off valve 9 is connected between the outlet ① of the carbon dioxide oil separator 7 and the inlet ① of the carbon dioxide shell and tube heat exchanger 13 Between; the refrigerant cut-off valve three 26 is connected between the outlet of the throttle valve two 21 and the inlet ① of the refrigerant of the carbon dioxide shell-and-tube heat exchanger two 25; the refrigerant cut-off valve four 27 is connected between the throttle valve two 21 outlet and Between two 28 refrigerant inlets of the carbon dioxide finned tube heat exchanger.
依据实验目的的不同，通过控制冷媒截止阀组中冷媒截止阀的开关状态及调节单式空调机一10、单式空调机二30、电加热器一11和电加热器二29来模拟制冷工况和制热工况；所述二氧化碳翅片管换热器一12、二氧化碳翅片管换热器二28、二氧化碳管壳式换热器一13和二氧化碳管壳式换热器二25用于实现模拟两级节流中间不完全冷却双级跨临界的二氧化碳风冷式制冷、水冷式制冷、风冷式冷水机组、水冷式冷水机组、空气源热泵、空气源冷凝热回收系统、水源热泵和水源冷凝热回收等不同的系统。According to different experiment purposes, the refrigeration operation is simulated by controlling the switching state of the refrigerant shut-off valve in the refrigerant shut-off valve group and adjusting the single air conditioner 10, the single air conditioner 2 30, the electric heater 11 and the electric heater 29 conditions and heating conditions; the carbon dioxide finned tube heat exchanger one 12, the carbon dioxide finned tube heat exchanger two 28, the carbon dioxide shell and tube heat exchanger one 13 and the carbon dioxide shell and tube heat exchanger two 25 are used Realize the simulation of two-stage throttling, intermediate incomplete cooling, two-stage transcritical carbon dioxide air-cooled refrigeration, water-cooled refrigeration, air-cooled chillers, water-cooled chillers, air-source heat pumps, air-source condensation heat recovery systems, water-source heat pumps and Water source condensation heat recovery and other different systems.
以下结合附图详细说明利用上述一种新型多功能两级节流中间不完全冷却的双级跨临界二氧化碳制冷/热泵综合实验台，实现在下述系统之间进行切换，用以模拟多种实验；The following is a detailed description of the use of the above-mentioned new multi-functional two-stage throttling with incomplete cooling in the middle of the two-stage transcritical carbon dioxide refrigeration/heat pump comprehensive test bench to realize switching between the following systems in order to simulate various experiments in conjunction with the accompanying drawings;
一、两级节流中间不完全冷却的双级跨临界二氧化碳风冷式制冷(空气源热泵)系统：如图2所示，关闭冷媒截止阀二9和冷媒截止阀三26，开启冷媒截止阀一8和冷媒截止阀四27。1. Two-stage transcritical carbon dioxide air-cooled refrigeration (air source heat pump) system with two-stage throttling and incomplete cooling in the middle: as shown in Figure 2, close refrigerant shut-off valve 2 9 and refrigerant shut-off valve 3 26, and open refrigerant shut-off valve One 8 and four 27 of the refrigerant shut-off valve.
所述二氧化碳低压压缩机1的排气口③与二氧化碳油分离器一3的进口③连接，二氧化碳低压压缩机1的回油口即2号进口②通过阀门2与二氧化碳油分离器一3的2号出口②相连接；所述二氧化碳油分离器一3的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳气液分离器一4的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳高压压缩机5的出口③接二氧化碳油分离器二7的进口③；所述二氧化碳油分离器二7的2号出口②通过阀门二6与二氧化碳高压压缩机5的2号进口②相连接，1号出口①接冷媒截止阀一8的进口；所述冷媒截止阀一8的出口接二氧化碳翅片管换热器一12的进口；所述二氧化碳翅片管换热器一12的出口接流量计二17的进口；所述流量计二17的出口接干燥过滤器18的进口；所述干燥过滤器18的出口接电磁阀19的进口；所述电磁阀19的出口接节流阀一20的进口；所述节流阀一20的出口接二氧化碳气液分离器一4的进口③；所述二氧化碳气液分离器一4的2号出口②接节流阀二21的进口；所述节流阀二21的出口接冷媒截止阀四27的进口；所述冷媒截止阀四27的出口接二氧化碳翅片管换热器二28的进口；所述二氧化碳翅片管换热器二28的出口接二氧化碳气液分离器31的进口；所述二氧化碳气液分离器31的出口接二氧化碳低压压缩机1的进口①；The exhaust port of the carbon dioxide low-pressure compressor 1 is connected with the inlet ③ of the carbon dioxide oil separator-3, and the oil return port of the carbon dioxide low-pressure compressor 1 is No. 2 inlet ② through the valve 2 and the inlet of the carbon dioxide oil separator-3. No. 1 outlet ② is connected; No. 1 outlet ① of the carbon dioxide oil separator-3 is connected to No. 1 inlet ① of the carbon dioxide high-pressure compressor 5; No. 1 outlet ① of the carbon dioxide gas-liquid separator-4 is connected to the carbon dioxide high-pressure compressor No. 1 inlet of 5 ①; the outlet ③ of the carbon dioxide high-pressure compressor 5 is connected to the inlet ③ of the carbon dioxide oil separator 2 7; the No. 2 outlet ② of the carbon dioxide oil separator 2 7 passes through the valve 2 6 and the carbon dioxide high-pressure compressor No. 2 inlet of 5 is connected to ②, and No. 1 outlet ① is connected to the inlet of refrigerant shut-off valve-8; the outlet of said refrigerant shut-off valve-8 is connected to the inlet of carbon dioxide finned tube heat exchanger-12; said carbon dioxide finned tube The outlet of heat exchanger one 12 is connected to the inlet of flowmeter two 17; the outlet of said flowmeter two 17 is connected to the inlet of drier filter 18; the outlet of said drier filter 18 is connected to the inlet of solenoid valve 19; said solenoid valve The outlet of 19 is connected to the inlet of throttle valve-20; the outlet of said throttle valve-20 is connected to the inlet ③ of carbon dioxide gas-liquid separator-4; the No. 2 outlet of said carbon dioxide gas-liquid separator-4 is connected to throttling The inlet of the valve two 21; the outlet of the throttle valve two 21 is connected to the inlet of the refrigerant shut-off valve four 27; the outlet of the refrigerant shut-off valve four 27 is connected to the inlet of the carbon dioxide finned tube heat exchanger two 28; the carbon dioxide fin The outlet of the sheet-tube heat exchanger two 28 is connected to the inlet of the carbon dioxide gas-liquid separator 31; the outlet of the carbon dioxide gas-liquid separator 31 is connected to the inlet of the carbon dioxide low-pressure compressor 1;
所述阀门一2和阀门二6的选取和启闭视具体情况而定；The selection and opening and closing of said valve one 2 and valve two 6 depends on the specific circumstances;
所述节流阀一20和节流阀二21在系统运行的过程中处于常开的状态，其开度的大小应视系统运行时的循环性能就行调节；The first throttle valve 20 and the second throttle valve 21 are in a normally open state during system operation, and their openings should be adjusted depending on the cycle performance of the system during operation;
所述循环可根据实验目的的不同而分别作为两级节流中间不完全冷却双级跨临界二氧化碳形式的风冷制冷系统和空气源热泵系统。According to different experimental purposes, the cycle can be used as an air-cooled refrigeration system and an air-source heat pump system in the form of two-stage throttling and intermediate incomplete cooling of two-stage transcritical carbon dioxide, respectively, according to different experimental purposes.
二、一级节流中间不完全冷却的双级跨临界二氧化碳水冷式制冷(空气源冷凝热回收)系统：如图3所示，关闭冷媒截止阀一8和冷媒截止阀三26，开启冷媒截止阀二9和冷媒截止阀四27。2. Two-stage transcritical carbon dioxide water-cooled refrigeration (air source condensation heat recovery) system with incomplete cooling in the middle of the first-stage throttling: As shown in Figure 3, close the refrigerant shut-off valve 18 and refrigerant shut-off valve 3 26, and open the refrigerant shut-off valve Valve two 9 and refrigerant stop valve four 27.
冷媒系统：所述二氧化碳低压压缩机1的排气口③与二氧化碳油分离器一3的进口③连接，二氧化碳低压压缩机1的回油口即2号进口②通过阀门一2与二氧化碳油分离器一3的2号出口②相连接；所述二氧化碳油分离器一3的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳气液分离器一4的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳高压压缩机5的出口③接二氧化碳油分离器二7的进口③；所述二氧化碳油分离器二7的2号出口②通过阀门二6与二氧化碳高压压缩机5的2号进口②相连接，1号出口接冷媒截止阀二9的进口；所述冷媒截止阀二9的出口接二氧化碳管壳式换热器一13的冷媒进口①；所述二氧化碳管壳式换热器一13的冷媒出口②接流量计二17的进口；所述流量计二17的出口接干燥过滤器18的进口；所述干燥过滤器18的出口接电磁阀19的进口；所述电磁阀19的出口接节流阀一20的进口；所述节流阀一20的出口接二氧化碳气液分离器一4的进口③；所述二氧化碳气液分离器一4的2号出口②接节流阀二21的进口；所述节流阀二21的出口接冷媒截止阀四27的进口；所述冷媒截止阀四27的出口接二氧化碳翅片管换热器二28的进口；所述二氧化碳翅片管换热器二28的出口接二氧化碳气液分离器31的进口；所述二氧化碳气液分离器31的出口接二氧化碳低压压缩机1的进口①；Refrigerant system: the exhaust port ③ of the carbon dioxide low-pressure compressor 1 is connected to the inlet ③ of the carbon dioxide oil separator-3, and the oil return port of the carbon dioxide low-pressure compressor 1 is the No. 2 inlet ② through the valve-2 and the carbon dioxide oil separator No. 2 outlet ② of -3 is connected; No. 1 outlet ① of the carbon dioxide oil separator-3 is connected to No. 1 inlet ① of the carbon dioxide high-pressure compressor 5; No. 1 outlet ① of the carbon dioxide gas-liquid separator-4 is connected No. 1 inlet of carbon dioxide high-pressure compressor 5 ①; the outlet ③ of said carbon dioxide high-pressure compressor 5 is connected to the inlet ③ of carbon dioxide oil separator 2 7; No. 2 outlet ② of said carbon dioxide oil separator 2 7 passes through valve 2 6 and The No. 2 inlet of the carbon dioxide high-pressure compressor 5 is connected to ②, and the No. 1 outlet is connected to the inlet of the refrigerant shut-off valve 2 9; the outlet of the refrigerant shut-off valve 2 9 is connected to the refrigerant inlet ① of the carbon dioxide shell-and-tube heat exchanger 13; The refrigerant outlet of the carbon dioxide shell-and-tube heat exchanger one 13 is connected to the inlet of the flowmeter two 17; the outlet of the flowmeter two 17 is connected to the inlet of the dry filter 18; the outlet of the dry filter 18 is connected to the solenoid valve 19 the inlet of the solenoid valve 19; the outlet of the solenoid valve 19 is connected to the inlet of the throttle valve-20; the outlet of the throttle valve-20 is connected to the inlet of the carbon dioxide gas-liquid separator-4 ③; the outlet of the carbon dioxide gas-liquid separator-4 No. 2 exit ② is connected to the inlet of the throttle valve 2 21; the outlet of the throttle valve 2 21 is connected to the inlet of the refrigerant cut-off valve 27; the outlet of the refrigerant cut-off valve 27 is connected to the carbon dioxide finned tube heat exchanger 2 28 The inlet of the carbon dioxide finned tube heat exchanger 28 is connected to the inlet of the carbon dioxide gas-liquid separator 31; the outlet of the carbon dioxide gas-liquid separator 31 is connected to the inlet of the carbon dioxide low-pressure compressor 1;
水系统：所述第一保温水箱16的出水口与水泵一14的进口相连接；所述水泵一14的排水口接二氧化碳管壳式换热器一13壳侧的进水口③；所述二氧化碳管壳式换热器一13壳侧的出水口④接流量计一15的进水口；所述流量计一15的出水口与第一保温水箱16的进水口相连接；Water system: the water outlet of the first insulated water tank 16 is connected to the inlet of the water pump 14; the water outlet of the water pump 14 is connected to the water inlet ③ on the shell side of the carbon dioxide shell-and-tube heat exchanger 13; the carbon dioxide The water outlet on the shell side of the shell-and-tube heat exchanger-13 (4) is connected to the water inlet of the flowmeter-15; the water outlet of the flowmeter-15 is connected to the water inlet of the first thermal water tank 16;
所述阀门一2和阀门二6的选取和启闭视具体情况而定；The selection and opening and closing of said valve one 2 and valve two 6 depends on the specific circumstances;
所述节流阀一20和节流阀二21在系统运行的过程中处于常开的状态，其开度的大小应视系统运行时的循环性能就行调节；The first throttle valve 20 and the second throttle valve 21 are in a normally open state during system operation, and their openings should be adjusted depending on the cycle performance of the system during operation;
所述循环可根据实验目的的不同而分别作为两级节流中间不完全冷却的双级跨临界二氧化碳形式的水冷式制冷系统和空气源冷凝热回收系统。The cycle can be used as a water-cooled refrigeration system in the form of two-stage throttling with incomplete cooling in the middle and a water-cooled refrigeration system in the form of two-stage transcritical carbon dioxide and an air source condensation heat recovery system according to different experimental purposes.
三、一级节流中间不完全冷却的双级跨临界二氧化碳风冷式冷水机组(水源热泵)系统：如图4所示，关闭冷媒截止阀二9和冷媒截止阀四27，开启冷媒截止阀一8和冷媒截止阀三26。3. Two-stage transcritical carbon dioxide air-cooled chiller (water source heat pump) system with incomplete cooling in the middle of the first-stage throttling: As shown in Figure 4, close the refrigerant shut-off valve 2 9 and refrigerant shut-off valve 4 27, and open the refrigerant shut-off valve One 8 and three 26 of the refrigerant cut-off valve.
冷媒系统：所述二氧化碳低压压缩机1的排气口③与二氧化碳油分离器一3的进口③连接，二氧化碳低压压缩机1的回油口即2号进口②通过阀门2与二氧化碳油分离器一3的2号出口②相连接；所述二氧化碳油分离器一3的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳气液分离器一4的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳高压压缩机5的出口③接二氧化碳油分离器二7的进口③；所述二氧化碳油分离器二7的2号出口②通过阀门二6与二氧化碳高压压缩机5的2号进口②相连接，1号出口①接冷媒截止阀一8的进口；所述冷媒截止阀一8的出口接二氧化碳翅片管换热器一12的进口；所述二氧化碳翅片管换热器一12的出口接流量计二17的进口；所述流量计二17的出口接干燥过滤器18的进口；所述干燥过滤器18的出口接电磁阀19的进口；所述电磁阀19的出口接节流阀一20的进口；所属节流阀一20的出口接二氧化碳气液分离器一4的进口③；所述二氧化碳气液分离器一4的2号出口②接节流阀二21的进口；所述节流阀二21的出口接冷媒截止阀三26的进口；所述冷媒截止阀三26的出口接二氧化碳管壳式换热器二25的进口①；所述二氧化碳管壳式换热器二25的出口②接二氧化碳气液分离器31的进口；所述二氧化碳气液分离器31的出口接二氧化碳低压压缩机1的进口①；Refrigerant system: the exhaust port ③ of the carbon dioxide low-pressure compressor 1 is connected to the inlet ③ of the carbon dioxide oil separator-3, and the oil return port of the carbon dioxide low-pressure compressor 1 is the No. 2 inlet ② through the valve 2 and the carbon dioxide oil separator-1 No. 2 outlet ② of 3 is connected; No. 1 outlet ① of the carbon dioxide oil separator-3 is connected to No. 1 inlet ① of the carbon dioxide high-pressure compressor 5; No. 1 outlet ① of the carbon dioxide gas-liquid separator-4 is connected to carbon dioxide No. 1 inlet of high-pressure compressor 5 ①; the outlet ③ of said carbon dioxide high-pressure compressor 5 is connected to the inlet ③ of carbon dioxide oil separator 2 7; No. 2 outlet ② of said carbon dioxide oil separator 2 7 passes through valve 2 6 and carbon dioxide The No. 2 inlet of the high-pressure compressor 5 is connected to ②, and the No. 1 outlet ① is connected to the inlet of the refrigerant shut-off valve-8; the outlet of the refrigerant shut-off valve-8 is connected to the inlet of the carbon dioxide finned tube heat exchanger-12; the carbon dioxide The outlet of finned tube heat exchanger one 12 is connected to the inlet of flowmeter two 17; the outlet of said flowmeter two 17 is connected to the inlet of drier filter 18; the outlet of said drier filter 18 is connected to the inlet of solenoid valve 19; The outlet of the solenoid valve 19 is connected to the inlet of the throttle valve-20; the outlet of the throttle valve-20 is connected to the inlet ③ of the carbon dioxide gas-liquid separator-4; the No. 2 outlet of the carbon dioxide gas-liquid separator-4 is connected to ② The inlet of the throttle valve two 21; the outlet of the throttle valve two 21 is connected to the inlet of the refrigerant shut-off valve three 26; the outlet of the refrigerant shut-off valve three 26 is connected to the inlet of the carbon dioxide shell-and-tube heat exchanger two 25; The outlet of the carbon dioxide shell-and-tube heat exchanger two 25 is connected to the inlet of the carbon dioxide gas-liquid separator 31; the outlet of the carbon dioxide gas-liquid separator 31 is connected to the inlet of the carbon dioxide low-pressure compressor 1;
水系统：所述第二保温水箱22的出水口与水泵二23的进口相连接；所述水泵二13的排水口接二氧化碳管壳式换热器二25壳侧的进水口③；所述二氧化碳管壳式换热器二25壳侧的出水口④接流量计二24的进水口；所述流量计二24的出水口与第二保温水箱22的进水口相连接；Water system: the water outlet of the second insulated water tank 22 is connected to the inlet of the water pump 23; the water outlet of the water pump 13 is connected to the water inlet ③ on the shell side of the carbon dioxide shell-and-tube heat exchanger 25; the carbon dioxide The water outlet on the shell side of the shell-and-tube heat exchanger two 25 ④ connects the water inlet of the flowmeter two 24; the water outlet of the flowmeter two 24 is connected with the water inlet of the second thermal insulation water tank 22;
所述阀门一2和阀门二6的选取和启闭视具体情况而定；The selection and opening and closing of said valve one 2 and valve two 6 depends on the specific circumstances;
所述节流阀一20和节流阀二21在系统运行的过程中处于常开的状态，其开度的大小应视系统运行时的循环性能就行调节；The first throttle valve 20 and the second throttle valve 21 are in a normally open state during system operation, and their openings should be adjusted depending on the cycle performance of the system during operation;
所述循环可根据实验目的的不同而分别作为两级节流中间不完全冷却双级跨临界二氧化碳形式的风冷式冷水机组系统和水源热泵系统。According to different experimental purposes, the cycle can be used as an air-cooled chiller system and a water source heat pump system in the form of two-stage throttling and intermediate incomplete cooling of two-stage transcritical carbon dioxide, respectively.
四、一级节流中间不完全冷却的双级跨临界二氧化碳水冷式冷水机组(水源冷凝热回收)系统：如图5所示，关闭冷媒截止阀一9和冷媒截止阀四27，开启冷媒截止阀二10和冷媒截止阀三26。4. Two-stage transcritical carbon dioxide water-cooled chiller (water source condensation heat recovery) system with incomplete cooling in the middle of one-stage throttling: As shown in Figure 5, close refrigerant shut-off valve 9 and refrigerant shut-off valve 4 27, and open refrigerant shut-off Valve two 10 and refrigerant stop valve three 26.
冷媒系统：所述二氧化碳低压压缩机1的排气口③与二氧化碳油分离器一3的进口③连接，二氧化碳低压压缩机1的回油口即2号进口②通过阀门2与二氧化碳油分离器一3的2号出口②相连接；所述二氧化碳油分离器一3的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳气液分离器一4的1号出口①接二氧化碳高压压缩机5的1号进口①；所述二氧化碳高压压缩机5的出口③接二氧化碳油分离器二7的进口③；所述二氧化碳油分离器二7的2号出口②通过阀门二6与二氧化碳高压压缩机5的2号进口②相连接，1号出口接冷媒截止阀二9的进口；所述冷媒截止阀二9的出口接二氧化碳管壳式换热器一13的冷媒进口①；所述二氧化碳管壳式换热器一13的冷媒出口②接流量计二17的进口；所述流量计二17的出口接干燥过滤器18的进口；所述干燥过滤器18的出口接电磁阀19的进口；所述电磁阀19的出口接节流阀一20的进口；所述节流阀一20的出口接二氧化碳气液分离器一4的进口③；所述二氧化碳气液分离器一4的2号出口②接节流阀二21的进口；所述节流阀二21的出口接冷媒截止阀三26的出口接二氧化碳管壳式换热器二25的进口①；所述二氧化碳管壳式换热器二25的出口②接二氧化碳气液分离器31的进口；所述二氧化碳气液分离器31的出口接二氧化碳低压压缩机1的进口①；Refrigerant system: the exhaust port ③ of the carbon dioxide low-pressure compressor 1 is connected to the inlet ③ of the carbon dioxide oil separator-3, and the oil return port of the carbon dioxide low-pressure compressor 1 is the No. 2 inlet ② through the valve 2 and the carbon dioxide oil separator-1 No. 2 outlet ② of 3 is connected; No. 1 outlet ① of the carbon dioxide oil separator-3 is connected to No. 1 inlet ① of the carbon dioxide high-pressure compressor 5; No. 1 outlet ① of the carbon dioxide gas-liquid separator-4 is connected to carbon dioxide No. 1 inlet of high-pressure compressor 5 ①; the outlet ③ of said carbon dioxide high-pressure compressor 5 is connected to the inlet ③ of carbon dioxide oil separator 2 7; No. 2 outlet ② of said carbon dioxide oil separator 2 7 passes through valve 2 6 and carbon dioxide The No. 2 inlet of the high-pressure compressor 5 is connected to ②, and the No. 1 outlet is connected to the inlet of the refrigerant shut-off valve 2 9; the outlet of the refrigerant shut-off valve 2 9 is connected to the refrigerant inlet ① of the carbon dioxide shell-and-tube heat exchanger 13; The refrigerant outlet of carbon dioxide shell-and-tube heat exchanger one 13 is connected to the inlet of flowmeter two 17; the outlet of said flowmeter two 17 is connected to the inlet of dry filter 18; the outlet of said dry filter 18 is connected to the solenoid valve 19 Import; the outlet of the electromagnetic valve 19 is connected to the inlet of the throttle valve-20; the outlet of the throttle valve-20 is connected to the inlet of the carbon dioxide gas-liquid separator-4; 2 of the carbon dioxide gas-liquid separator-4 No. exit ② is connected to the inlet of throttle valve 2 21; the outlet of said throttle valve 2 21 is connected to the outlet of refrigerant shut-off valve 3 26 and connected to the inlet ① of carbon dioxide shell-and-tube heat exchanger 2 25; said carbon dioxide shell-and-tube heat exchanger The outlet of heater two 25 2. connects the import of carbon dioxide gas-liquid separator 31; The outlet of described carbon dioxide gas-liquid separator 31 connects the import of carbon dioxide low-pressure compressor 1 1;
水系统：所述第一保温水箱16的出水口与水泵一14的进口相连接；所述水泵一14的排水口接二氧化碳管壳式换热器一13壳侧的进水口③；所述二氧化碳管壳式换热器一13壳侧的出水口④接流量计一15的进水口；所述流量计一15的出水口与第一保温水箱16的进水口相连接；所述第二保温水箱22的出水口与水泵二23的进口相连接；所述水泵二13的排水口接二氧化碳管壳式换热器二25壳侧的进水口③；所述二氧化碳管壳式换热器二25壳侧的出水口④接流量计二24的进水口；所述流量计二24的出水口与第二保温水箱22的进水口相连接；Water system: the water outlet of the first insulated water tank 16 is connected to the inlet of the water pump 14; the water outlet of the water pump 14 is connected to the water inlet ③ on the shell side of the carbon dioxide shell-and-tube heat exchanger 13; the carbon dioxide The water outlet on the shell side of the shell-and-tube heat exchanger-13 ④ is connected to the water inlet of the flowmeter-15; the water outlet of the flowmeter-15 is connected to the water inlet of the first thermal insulation water tank 16; the second thermal insulation water tank The water outlet of 22 is connected with the inlet of water pump 2 23; the water outlet of said water pump 2 13 is connected to the water inlet ③ on the shell side of carbon dioxide shell-and-tube heat exchanger 2 25; the shell of said carbon dioxide shell-and-tube heat exchanger 2 25 The water outlet of side 4. connects the water inlet of flow meter two 24; The water outlet of described flow meter two 24 is connected with the water inlet of the second heat preservation water tank 22;
所述阀门一2和阀门二6的选取和启闭视具体情况而定；The selection and opening and closing of said valve one 2 and valve two 6 depends on the specific circumstances;
所述节流阀一20和节流阀二21在系统运行的过程中处于常开的状态，其开度的大小应视系统运行时的循环性能就行调节；The first throttle valve 20 and the second throttle valve 21 are in a normally open state during system operation, and their openings should be adjusted depending on the cycle performance of the system during operation;
所述循环可根据实验目的的不同而分别作为两级节流中间不完全冷却双级跨临界二氧化碳形式的水冷式冷水机组和水源冷凝热回收系统。According to different experimental purposes, the cycle can be used as a water-cooled chiller in the form of two-stage throttling and incomplete cooling in the middle of two-stage transcritical carbon dioxide, and a water source condensation heat recovery system.
尽管上面结合图对本发明进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨的情况下，还可以作出很多变形，这些均属于本发明的保护之内。Although the present invention has been described above in conjunction with the drawings, the present invention is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, rather than restrictive. Under the inspiration, many modifications can be made without departing from the gist of the present invention, and these all belong to the protection of the present invention.
两级节流不完全冷却二氧化碳制冷/热泵综合实验台中冷媒在系统中循环的简述A brief description of the refrigerant circulation in the system in the two-stage throttling incomplete cooling carbon dioxide refrigeration/heat pump comprehensive test bench
在二氧化碳翅片管换热器二28或二氧化碳管壳式换热器二25中产生的压力为P0低压蒸汽，经过二氧化碳气液分离器31后首先被二氧化碳低压压缩机1吸入并压缩到中间压力Pm，和从二氧化碳气液分离器一4(俗称节能器)中分离出来的气体汇合，使混合后的气体的温度要高于对应压力下的气体的饱和温度tm，混合后的气体进入二氧化碳高压压缩机5进一步压缩到冷凝压力Pk，然后进入二氧化碳翅片管换热器一12或是二氧化碳管壳式换热器一13中进行冷却、冷凝。由二氧化碳翅片管换热器一12或是二氧化碳管壳式换热器一13出来的液体经过节流阀一20的节流到中间压力Pm后，进入二氧化碳气液分离器一4(俗称节能器)进行气液分离。从分离出来的气体作为中间补气直接和二氧化碳低压压缩机1的低压级排气汇合进入二氧化碳高压压缩机5,；分离出来的液体经节流阀二21的二级节流节流到蒸发压力P0后，进入二氧化碳翅片管换热器二28或二氧化碳管壳式换热器二25中蒸发，制取冷量，蒸发出来的低压蒸气被二氧化碳低压压缩机1吸入。循环就这样周而复始的进行。The pressure generated in the carbon dioxide fin-tube heat exchanger 28 or the carbon dioxide shell-and-tube heat exchanger 225 is P 0 low-pressure steam, after passing through the carbon dioxide gas-liquid separator 31, it is first sucked by the carbon dioxide low-pressure compressor 1 and compressed to the middle The pressure P m merges with the gas separated from the carbon dioxide gas-liquid separator-4 (commonly known as the economizer), so that the temperature of the mixed gas is higher than the saturation temperature t m of the gas under the corresponding pressure, and the mixed gas Enter the carbon dioxide high-pressure compressor 5 to be further compressed to the condensation pressure P k , and then enter the carbon dioxide fin-tube heat exchanger-12 or the carbon dioxide shell-and-tube heat exchanger-13 for cooling and condensation. The liquid from the carbon dioxide fin-tube heat exchanger-12 or the carbon dioxide shell-and-tube heat exchanger-13 is throttled by the throttle valve-20 to the intermediate pressure Pm , and then enters the carbon dioxide gas-liquid separator-4 (commonly known as Economizer) for gas-liquid separation. The separated gas is directly mixed with the low-pressure stage exhaust of the carbon dioxide low-pressure compressor 1 as an intermediate supplementary gas and enters the carbon dioxide high-pressure compressor 5; the separated liquid is throttled to the evaporation pressure by the secondary throttling of the throttle valve 221 After P 0 , it enters the carbon dioxide fin-tube heat exchanger 28 or the carbon dioxide shell-and-tube heat exchanger 225 for evaporation to produce cooling capacity, and the evaporated low-pressure steam is sucked by the carbon dioxide low-pressure compressor 1. The cycle goes on and on like this.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701552.XA CN105206166B (en) | 2015-10-26 | 2015-10-26 | The incomplete cooled carbon dioxide refrigerating/heat pump comprehensive experiment table of two-stage throttling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701552.XA CN105206166B (en) | 2015-10-26 | 2015-10-26 | The incomplete cooled carbon dioxide refrigerating/heat pump comprehensive experiment table of two-stage throttling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105206166A true CN105206166A (en) | 2015-12-30 |
| CN105206166B CN105206166B (en) | 2017-11-17 |
Family
ID=54953805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510701552.XA Active CN105206166B (en) | 2015-10-26 | 2015-10-26 | The incomplete cooled carbon dioxide refrigerating/heat pump comprehensive experiment table of two-stage throttling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105206166B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364069A (en) * | 2019-07-08 | 2019-10-22 | 江苏科技大学 | A multi-adjustable refrigeration test bench and test method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010102886A (en) * | 2001-10-13 | 2001-11-17 | 김철수 | Stop valve, sold valve, 4way valve controls type heat pump system |
| CN201590192U (en) * | 2009-12-14 | 2010-09-22 | 昆明理工大学 | Water source heat pump performance test device |
| CN201935476U (en) * | 2010-11-30 | 2011-08-17 | 广东欧科空调制冷有限公司 | Heat recovery type air-cooled heat pump unit |
| CN103971577A (en) * | 2014-05-16 | 2014-08-06 | 青岛海洋地质研究所 | CO2 Replacement Exploitation Natural Gas Hydrate Test Simulator |
| CN205318743U (en) * | 2015-10-26 | 2016-06-15 | 天津商业大学 | Two -stage throttle incompletely cools off carbon dioxide refrigeration / heat pump comprehensive experiment platform |
-
2015
- 2015-10-26 CN CN201510701552.XA patent/CN105206166B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010102886A (en) * | 2001-10-13 | 2001-11-17 | 김철수 | Stop valve, sold valve, 4way valve controls type heat pump system |
| KR20030031393A (en) * | 2001-10-13 | 2003-04-21 | 주식회사 케이티이엔지 | Stop valve, sold valve, 4way valve controls type heat pump system |
| CN201590192U (en) * | 2009-12-14 | 2010-09-22 | 昆明理工大学 | Water source heat pump performance test device |
| CN201935476U (en) * | 2010-11-30 | 2011-08-17 | 广东欧科空调制冷有限公司 | Heat recovery type air-cooled heat pump unit |
| CN103971577A (en) * | 2014-05-16 | 2014-08-06 | 青岛海洋地质研究所 | CO2 Replacement Exploitation Natural Gas Hydrate Test Simulator |
| CN205318743U (en) * | 2015-10-26 | 2016-06-15 | 天津商业大学 | Two -stage throttle incompletely cools off carbon dioxide refrigeration / heat pump comprehensive experiment platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364069A (en) * | 2019-07-08 | 2019-10-22 | 江苏科技大学 | A multi-adjustable refrigeration test bench and test method |
| CN110364069B (en) * | 2019-07-08 | 2021-03-02 | 江苏科技大学 | A kind of multi-adjustment refrigeration experimental bench and experimental method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105206166B (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105180496B (en) | A kind of multi-functional superposition type critical-cross carbon dioxide refrigerating/heat pump comprehensive experiment table | |
| CN102032705B (en) | Two-stage compression heat pump system | |
| CN105805981A (en) | Dual-operation compression-ejection heat pump air conditioner system | |
| CN103615836A (en) | Screw type total heat recovery air cooled heat pump air conditioning unit | |
| CN112577103A (en) | Multi-split air conditioner and control method thereof | |
| CN208765303U (en) | air conditioning system | |
| CN205318743U (en) | Two -stage throttle incompletely cools off carbon dioxide refrigeration / heat pump comprehensive experiment platform | |
| CN204593944U (en) | A kind of air conditioner outdoor unit system with supercooling apparatus | |
| CN202993696U (en) | Twin-stage multi-parallel-connection single-throttling complete-intercooling refrigerating system | |
| CN105206166B (en) | The incomplete cooled carbon dioxide refrigerating/heat pump comprehensive experiment table of two-stage throttling | |
| CN105202810A (en) | Two-stage throttling complete cooling carbon dioxide refrigeration/ heat pump comprehensive experimental bench | |
| CN203595316U (en) | Screw rod type total heat recovery air-cooled heat pump air conditioning unit | |
| CN204254925U (en) | Heat exchange system and air conditioner with same | |
| CN205177272U (en) | One -level throttle cools off carbon dioxide doublestage refrigeration / heat pump comprehensive experiment platform completely | |
| CN105206165B (en) | The complete cooled carbon dioxide two-stage refrigeration/heat pump composite experimental bench of one-level throttling | |
| CN208222889U (en) | The refrigeration system of variable-flow single stage compress circulation and two-stage compression cycle can be achieved | |
| CN105202809A (en) | Single-unit single-level transcritical carbon dioxide refrigeration/heat pump comprehensive experiment table | |
| CN108007010B (en) | Heat pump system | |
| CN205102450U (en) | Supercritical carbon dioxide refrigeration / heat pump comprehensive experiment platform is striden to multi -functional overlapping formula | |
| CN205561333U (en) | Supercritical carbon dioxide refrigeration / heat pump comprehensive experiment platform is striden to unit single -stage | |
| CN203454449U (en) | Four-cycle two-stage compression refrigerating system | |
| CN105206164B (en) | The incomplete cooled carbon dioxide two-stage refrigeration/heat pump experimental bench of one-level throttling | |
| CN108317762B (en) | Visual comprehensive experiment table of multifunctional direct contact condensation refrigerating system | |
| CN208620676U (en) | The testing equipment of air injection enthalpy-increasing compressor | |
| CN205177271U (en) | One -level throttle incompletely cools off carbon dioxide doublestage refrigeration / heat pump comprehensive experiment platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |