CN205580038U - Supercritical carbon dioxide heat pump return oil system is striden to industrial, commercial MW level - Google Patents
Supercritical carbon dioxide heat pump return oil system is striden to industrial, commercial MW level Download PDFInfo
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- CN205580038U CN205580038U CN201620310568.8U CN201620310568U CN205580038U CN 205580038 U CN205580038 U CN 205580038U CN 201620310568 U CN201620310568 U CN 201620310568U CN 205580038 U CN205580038 U CN 205580038U
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Abstract
The utility model discloses a supercritical carbon dioxide heat pump return oil system is striden to industrial, commercial MW level, including CO2 compressor, gas cooler, oil separator, differential gauge, filter, regenerator, first oil storage tank, deposit oil tank, second oil storage tank, sight glass and entrainment trap, return oil system installs in this system at installation return oil system between gas cooler and the regenerator and between compression export and gas cooler, simultaneously at entrainment trap bottom design secondary return oil system for inside oil recycles between equipment and pipeline, the long period even running, does this system return oil system oil return efficiency original relatively have obvious promotion 10% beneficial effect has been played to heat exchanger operation heat exchange efficiency simultaneously to the reinforcing of 30%, oil return operating stability, this system adopts liquid level signal and electric valve interlocking, compares original system, and degree of automation is high, the operation maintenance is more convenient.
Description
Technical field
The present invention relates to heat pump oil return system art, refer in particular to a kind of MW level CO 2 trans-critical heat pump oil return system industrial, commercial.
Background technology
In recent years, due to Chlorofluorocarbons (CFCs) and the problem such as the depletion of the ozone layer of hydrogeneous chlorofluoro-alkane generation and greenhouse effect, studying and seeking new substitute is the pressing problem that refrigerating field faces.Western developed country ripe application CO at present2Natural refrigerant is the technology of cold-producing medium, and Germany, Japan are that this technology has been applied to the field such as industry, megastore by the western countries of representative, and are vigorously advocated by developed country and support, the most therefore obtain market and are widely recognized as.China is currently mainly also applied to small water heater, domestic air conditioning etc., large scale industry and market application at present also in excavation regions.
CO 2 trans-critical heat pump has many advantages, CO2Being natural refrigerant, safety non-toxic, refrigeration performance is high, is also equipped with heat-production functions, at the bottom of pressure ratio, good heat conductivity etc. simultaneously.But along with industrialization demand, the CO 2 trans-critical heat pump unit of MW class power tromps and goes on the stage, extension application also will face many new challenges.Wherein the oil return system of even running is exactly the matter of utmost importance solving MW class CO 2 trans-critical heat pump.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its main purpose is to provide a kind of MW level CO 2 trans-critical heat pump oil return system industrial, commercial, and it can effectively solve existing MW class CO 2 trans-critical heat pump and run jiggly problem.
For achieving the above object, the present invention uses such as purgation technical scheme:
A kind of MW level CO 2 trans-critical heat pump oil return system industrial, commercial, includes CO2Compressor, gas cooler, oil eliminator, differential manometer, filter, regenerator, the first oil storage tank, deposit oil tank, the second oil storage tank, visor and entrainment trap；
This CO2The outlet of compressor connects the entrance of gas cooler, and this oil eliminator is in parallel with differential manometer, and the entrance of oil eliminator and the entrance of differential manometer are all connected with the outlet of gas cooler, the gas outlet of oil eliminator and the gas outlet of differential manometer and are all connected with the entrance of regenerator；Oil eliminator connects downtake pipe, and the oil-out of oil eliminator connects the entrance of filter, and the outlet of filter is connected with the first oil storage tank, and the first oil storage tank is connected with deposit oil tank, the first oil storage tank and CO2The oil return opening of compressor is connected, first oil storage tank is connected with oil eliminator import supervisor, first oil storage tank increases cross over pipe with deposit oil tank and is connected, cross over pipe connects second exhaust pipe, deposit oil tank increases artificial oil fuel tube, this entrainment trap is connected with one end of visor, and the other end of visor and the second oil storage tank connect, and the second oil storage tank is connected with deposit oil tank.
A kind of MW level CO 2 trans-critical heat pump oil return system industrial, commercial, includes CO2Compressor, oil eliminator, differential manometer, filter, gas cooler, regenerator, oil cooler, the first oil storage tank, deposit oil tank, the second oil storage tank, visor and entrainment trap；
This oil eliminator is in parallel with differential manometer, and the entrance of oil eliminator and the entrance of differential manometer are all connected with CO2The outlet of compressor, the gas outlet of oil eliminator and the gas outlet of differential manometer are all connected with the entrance of gas cooler, and the outlet of gas cooler connects the entrance of regenerator；Oil eliminator connects downtake pipe, the oil-out of oil eliminator and the entrance of oil cooler, and the outlet of oil cooler connects the entrance of filter, and the outlet of filter connects the first oil storage tank, and the first oil storage tank is connected with deposit oil tank, the first oil storage tank and CO2The oil return opening of compressor is connected, first oil storage tank is connected with oil eliminator import supervisor, first oil storage tank increases cross over pipe with deposit oil tank and is connected, cross over pipe connects second exhaust pipe, deposit oil tank increases artificial oil fuel tube, this entrainment trap is connected with one end of visor, and the other end of visor and the second oil storage tank connect, and the second oil storage tank is connected with deposit oil tank.
As a kind of preferred version, described oil eliminator is that two covering devices are in parallel.
As a kind of preferred version, described cross over pipe being provided with valve, this second exhaust pipe is provided with pressure relief valve, the first oil storage tank is connected with oil eliminator import supervisor, and import supervisor installs electrodynamic valve.
As a kind of preferred version, the installation site of described first oil storage tank is less than the installation site of deposit oil tank.
As a kind of preferred version, the installation site of described second oil storage tank is less than the installation site of entrainment trap.
As a kind of preferred version, described first oil storage tank is provided with high level meter and low liquidometer, this low liquidometer exports low liquid level signal and controls the electrodynamic valve cut out of the air bleeding valve on second exhaust pipe and deposit oil tank import, electrodynamic valve on Time Delay Opening cross over pipe and the electrodynamic valve on deposit oil tank petroleum pipeline simultaneously, this high level meter output high level signal controls to close the electrodynamic valve on cross over pipe and the electrodynamic valve on deposit oil tank flowline.
As a kind of preferred version, described deposit oil tank is provided with high level meter and low liquidometer, this low liquidometer exports low liquid level signal and controls to cut out the electrodynamic valve on cross over pipe and the electrodynamic valve of deposit oil tank flowline, open the air bleeding valve on second exhaust pipe and the electrodynamic valve of deposit oil tank import, high level meter output high level signal at stop air bleeding valve and the electrodynamic valve of deposit oil tank oil inlet.
As a kind of preferred version, described second oil storage tank is provided with high level meter and low liquidometer, and this high level meter output high level signal controls the electrodynamic valve of the second oil storage tank flowline and opens, and low liquid level signal controls the electrodynamic valve of the second oil storage tank flowline and closes.
As a kind of preferred version, described CO2Liquidometer is installed on compressor, is provided with liquid level signal, when having oil liquid level signal, close CO2Electrodynamic valve on the oil return pipe of compressor, and open deposit oil tank and the electrodynamic valve on the cross over pipe of oil eliminator import supervisor；During oil-free signal, open CO2Electrodynamic valve on the oil return pipe of compressor, cuts out deposit oil tank and the electrodynamic valve on the cross over pipe of oil eliminator import supervisor.
The present invention compared with prior art has clear advantage and beneficial effect, specifically, as shown from the above technical solution:
Native system is to install back oil system between gas cooler and regenerator and install back oil system between compression outlet and gas cooler, simultaneously at entrainment trap bottom design secondary returning oil system, interior oil is recycled between equipment and pipeline, long period even running, native system the most original oil return system oil return efficiency is obviously improved 10%-30%, and oil return operation stability strengthens.This system uses liquid level signal to interlock with electrically operated valve, compares original system, and automaticity is high；Operation maintenance is convenient.
For more clearly illustrating architectural feature and effect of the present invention, next with specific embodiment below in conjunction with the accompanying drawings the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of first preferred embodiment of the present invention；
Fig. 2 is the structural representation of second preferred embodiment of the present invention.
Detailed description of the invention
Refer to shown in Fig. 1, that show the concrete structure of first preferred embodiment of the present invention, include and include CO2Compressor 1, ball valve 2, electrodynamic valve 3, oil eliminator 4, relief valve 5, electrodynamic valve 6, electrodynamic valve 7, oil eliminator 8, electrodynamic valve 9, ball valve 10, filter 11, ball valve 12, differential pressure gauge 13, ball valve 14, ball valve 15, electrodynamic valve 16, electrodynamic valve 17, ball valve 18, first oil storage tank 19, ball valve 20, high level meter 21, low liquidometer 22, electrodynamic valve 23, liquidometer 24, ball valve 25, ball valve 26, ball valve 27, visor 28, ball valve 29, second oil storage tank 30, high level meter 31, low liquidometer 32, electrodynamic valve 33, ball valve 34, deposit oil tank 35, electrodynamic valve 36, low liquidometer 37, high level meter 38, ball valve 39, ball valve 40, electrodynamic valve 41, air relief valve 42, electromagnetic valve 43, electrodynamic valve 44.
Described CO2Compressor 1, ball valve 45, gas cooler 46, ball valve 2, ball valve 3, oil eliminator 4, electrodynamic valve 6, ball valve 15, regenerator 47 are sequentially connected with；Described ball valve 2, electrodynamic valve 7, oil eliminator 8, electrodynamic valve 9, ball valve 15, regenerator 47 are sequentially connected with；Described ball valve 2, ball valve 12, differential pressure gauge 13, ball valve 14, ball valve 15, regenerator 47 are sequentially connected with；Described oil eliminator 4, electrodynamic valve 17, basket filter 11, ball valve the 18, first oil storage tank 19 are sequentially connected with, and described oil eliminator 8, electrodynamic valve 16, basket filter 11, ball valve the 18, first oil storage tank 19 are sequentially connected with；Described first oil storage tank 19, ball valve 20, electrodynamic valve 23, CO2The oil return opening of compressor 1 is sequentially connected with；Described first oil storage tank 19, electrodynamic valve 43, electrodynamic valve 41, air relief valve 42 are sequentially connected with, and described first oil storage tank 19, electrodynamic valve 43, ball valve 40, deposit oil tank 35 are sequentially connected with；Described first oil storage tank 19, electrodynamic valve 44, oil eliminator (4,8) import supervisor are sequentially connected with；On described first oil storage tank 19, high level meter 21 and low liquidometer 22 are set；Described deposit oil tank 35, electrodynamic valve the 36, first oil storage tank 19 are sequentially connected with；Described deposit oil tank 35 is provided with low liquidometer 37 and high level meter 38；Described deposit oil tank 35, ball valve 39 are sequentially connected with；Described electrodynamic valve 34, electrodynamic valve the 33, second oil storage tank 30 are sequentially connected with；On described second oil storage tank 30, high level meter 31 and low liquidometer 32 are set；Described second oil storage tank 30, ball valve 29, visor 28, ball valve 27, entrainment trap 48 are sequentially connected with；The liquid level signal of described liquidometer 24 controls electrodynamic valve 44,23.The signal of telecommunication of described differential pressure gauge 13 is connected with electrodynamic valve 3,7,6,9,16,17, performs signal and controls to automatically switch and change alarm function；High level meter 21 on first oil storage tank 19 exports high level signal and controls electrodynamic valve 36 and electromagnetic valve 43, and low liquidometer 22 exports low liquid level signal and controls ball valve 34, ball valve 41, electromagnetic valve 43, electrodynamic valve 36；High level meter 38 on deposit oil tank 35 exports high level signal and controls ball valve 34 and electrodynamic valve 41, and low liquidometer 37 exports low liquid level signal and controls electromagnetic valve 43, electrodynamic valve 36, ball valve 34, electrodynamic valve 41 and siren；High level meter 31 and low liquidometer 32 export liquid level signal and control electrodynamic valve 33；Liquidometer 24 exports liquid level signal and controls electrodynamic valve 23 and electrodynamic valve 44.
During work, high temperature is pressed CO2With machine oil mixed gas after gas cooler 46 cools down, oil particles gathers formation bulky grain, is separated by oil eliminator 4, CO after separation2Gas enters regenerator 47 by pipeline, and oil is discharged by gathering bottom by oil eliminator 4 outer layer under the effect of gravity, entered the first oil storage tank 19 after basket filter 11；When oil eliminator 4 inlet outlet pressure differential reaches 5bar, trigger differential pressure gauge 13 signal of telecommunication, issue electrodynamic valve 3,6,7,9,16,17, electrodynamic valve 7 is immediately performed breakdown action, 5 seconds electrodynamic valves 9 of time delay perform opening action, time delay opens electrodynamic valve 16 in 30 seconds, then proceedes to 5 seconds closedown electrodynamic valves 3 of time delay, continues to postpone 5 seconds closedown electrodynamic valves 17,6；Differential pressure gauge 13 sends the signal of telecommunication and carries out alarm to the siren changing filter simultaneously, notifies that Field Force changes oil eliminator 4, after replacing, is closed siren by on-the-spot people and resetted, and oil eliminator 4(increases--with 8) switch circle logic successively and control.It is stored in the machine oil of the first oil storage tank 19 by high side pressure, oil starvation signal is sent by low-pressure side tank level meter 24, close the electrodynamic valve 44 of the first oil storage tank 19 and oil eliminator 4 inlet connecting branch, oil cylinder import electrodynamic valve is opened in time delay for 5 seconds, high-pressure side oil is automatically injected inside oil cylinder, treating that liquid level increases to specified altitude assignment, tank level meter 24 sends the signal of telecommunication, CO2The electrodynamic valve 23 of the oil return opening of compressor 1 performs closing motion, and electrodynamic valve 44 time delay of connecting tube performs to open for 5 seconds.When the first oil storage tank 19 oil return deficiency, i.e. reaching low liquidometer 22, low liquid level signal triggers, and closes ball valve 34,3 seconds closedown electrodynamic valves 41 of time-delay closing, continuing time delay and within 3 seconds, open electromagnetic valve 43, then electrodynamic valve 36 is opened in time delay for 5 seconds, and the machine oil of deposit oil tank 35 injects the first oil storage tank 19 under gravity, when liquid level reaches predetermined high level meter 21, send high signal, be immediately performed closedown electrodynamic valve 36,2 seconds closedown electromagnetic valves 43 of time delay；When lay in oil tank 35 give the first oil storage tank 19 refuel time, trigger low liquidometer 37 preferentially to perform to close electrodynamic valve 36, two seconds closedown electromagnetic valves 43 of time delay, continue time delay and open electrodynamic valve 41 in 2 seconds, then time delay opens ball valve 34 in 30 seconds, it is simultaneously emitted by oil starvation alarm A, if laying in oil tank 35 liquid level in 120 seconds still less than high level meter 38, alarm continues, wait watchman manually refuels high level, if the second oil storage tank 30 has replenish one's stock oil tank 35 of enough machine oil to high level meter 38, alarm automatically terminates；When laying in oil tank 35 oil level and reaching high level, triggering high level meter 38 gives oiling siren, ball valve 34, electrodynamic valve 41, and the siren that refuels stops oiling alarm, closes ball valve 34, electrodynamic valve 41 immediately；In second oil storage tank 30 running, we can observe gas-liquid separator oil return time and recirculating oil quantity size by visor 28, when gas-liquid separator oil return reaches the second oil storage tank 30 high level, high level meter 31 sends signal, electrodynamic valve 33 performs opening action, wait that deposit oil tank 35 signal opens ball valve 34, electrodynamic valve 41, second oil storage tank 30 oil return is injected into deposit oil tank 35 by pipeline, when the oil level of the second oil storage tank 30 touches low liquidometer 32, send the signal of telecommunication, close electrodynamic valve 33 immediately.
Refer to shown in Fig. 2, that show the concrete structure of second preferred embodiment of the present invention, including CO2nullCompressor 1、Ball valve 2、Electrodynamic valve 3、Oil eliminator 4、Relief valve 5、Electrodynamic valve 6、Electrodynamic valve 7、Oil eliminator 8、Electrodynamic valve 9、Relief valve 10、Filter 11、Ball valve 12、Differential pressure gauge 13、Ball valve 14、Ball valve 15、Electrodynamic valve 16、Electrodynamic valve 17、Oil cooler 18、Ball valve 19、Ball valve 20、Ball valve 21、First oil storage tank 22、Ball valve 23、High level meter 24、Low liquidometer 25、Electrodynamic valve 26、Liquidometer 27、Ball valve 28、Ball valve 29、Ball valve 30、Visor 31、Ball valve 32、First oil storage tank 33 high level meter 34、Low liquidometer 35、Electrodynamic valve 36、Electrodynamic valve 37、Deposit oil tank 38、Electrodynamic valve 39、Low liquidometer 40、High level meter 41、Ball valve 42、Ball valve 43、Electrodynamic valve 44、Air relief valve 45、Electrodynamic valve 46、Electrodynamic valve 47.
Described CO2Compressor 1, ball valve 2, electrodynamic valve 3, oil eliminator 4, electrodynamic valve 6, ball valve 15, gas cooler 48 are sequentially connected with；Described CO2Compressor 1, ball valve 2, electrodynamic valve 7, oil eliminator 8, electrodynamic valve 9, ball valve 15, gas cooler 48 are sequentially connected with；Described CO2Compressor 1, ball valve 2, ball valve 12, differential pressure gauge 13, ball valve 14, ball valve 15, gas cooler 48 are sequentially connected with；Described oil eliminator 4, electrodynamic valve 17, oil cooler 18, ball valve 19, ball valve 20, basket filter 11, ball valve the 21, first oil storage tank 22 are sequentially connected with；Described oil eliminator 8, electrodynamic valve 16, oil cooler 18, ball valve 19, ball valve 20, basket filter 11, ball valve the 21, first oil storage tank 22 are sequentially connected with；Described first oil storage tank 22, ball valve 23, electrodynamic valve 26, CO2The oil return opening of compressor 1 is sequentially connected with；Described first oil storage tank 22, electrodynamic valve 46, electrodynamic valve 44, air relief valve 45 are sequentially connected with；Described first oil storage tank 22, electromagnetic valve 46, ball valve 43, deposit oil tank 38 are sequentially connected with；Described first oil storage tank 22 arranges high level meter 24 and low liquidometer 25；Described deposit oil tank 38, electrodynamic valve the 39, first oil storage tank 22 are sequentially connected with；Described deposit oil tank 38 is provided with high level meter 41 and low liquidometer 40；Described deposit oil tank 38, ball valve 42 are sequentially connected with；Described electrodynamic valve 37, electrodynamic valve the 36, second oil storage tank 33 are sequentially connected with；Described second oil storage tank 33 is provided with high level meter 34 and low liquidometer 35；Described second oil storage tank 33, ball valve 32, visor 31, ball valve 30, ball valve 28, entrainment trap 49 are sequentially connected with.The signal of telecommunication of described differential pressure gauge 13 is connected with electrodynamic valve 3,7,6,9,16,17, performs signal and controls, and oil eliminator 4,8 automatically switches, and gives to change or clean alarm signal；First oil storage tank 22 is provided with high level meter 24 and low liquidometer 25,Low liquidometer 25 controls electromagnetic valve 46, electrodynamic valve 39, electrodynamic valve 37, electrodynamic valve 44, and high level meter 24 controls electromagnetic valve 46, electrodynamic valve 39；Low liquidometer 40 on deposit oil tank 38 exports low liquid level signal and controls electromagnetic valve 46, electrodynamic valve 39, electrodynamic valve 37, electrodynamic valve 44 and siren；High level meter 41 exports high level signal and controls electrodynamic valve 37, electrodynamic valve 44, and high level meter 34 and low liquidometer 35 export two position signal respectively and control electrodynamic valve 36.
During work, high temperature is pressed CO2Separated by oil eliminator 4 with machine oil mixed gas, CO after separation2Gas enters regenerator 50 by pipeline after gas cooler 48 cools down, and oil is discharged by gathering bottom by oil eliminator 4 outer layer under the effect of gravity, after oil cooler 18 cooling and blue formula filter 11 are filtered, enters the first oil storage tank 22；When oil eliminator 4 inlet outlet pressure differential reaches 5bar, trigger differential pressure gauge 13 signal of telecommunication, issue electrodynamic valve 3,6,7,9,16,17, electrodynamic valve 7 is immediately performed breakdown action, 5 seconds electrodynamic valves 9 of time delay perform opening action, electrodynamic valve 16, then 5 seconds closedown electrodynamic valves 3 of time delay are opened in time delay for 30 seconds, continue to postpone 5 seconds closedown electrodynamic valves 17,6；Differential pressure gauge 13 sends the signal of telecommunication and carries out alarm to the siren changing filter simultaneously, notifies that Field Force changes or clean oil eliminator 4, after replacing, is closed siren by on-the-spot people and resetted, and oil eliminator 4,8 switches circle logic successively and controls.It is stored in the machine oil of the first oil storage tank 22 by high side pressure, oil starvation signal is sent by low-pressure side tank level meter 27, close the electrodynamic valve 47 of the first oil storage tank 22 and oil eliminator 4,8 inlet connecting branch, oil cylinder import electrodynamic valve 26 is opened in time delay for 5 seconds, high-pressure side oil is automatically injected inside oil cylinder, treating that liquid level increases to specified altitude assignment, tank level meter 27 sends the signal of telecommunication, CO2The electrodynamic valve 26 of the oil return opening of compressor 1 performs closing motion, and the electrodynamic valve time delay of connecting tube performs to open for 5 seconds.When the first oil storage tank 22 oil return deficiency, i.e. reaching low liquidometer 25, low liquidometer 25 triggers, and closes electrodynamic valve 37,3 seconds closedown electrodynamic valves 44 of time-delay closing, continuing time delay and open electrodynamic valve 46 in 3 seconds, be further continued for time delay and within 5 seconds, open electrodynamic valve 39, the machine oil of deposit oil tank 38 injects the first oil storage tank 22 under gravity, when liquid level reaches a predetermined high position, this high level meter 24 sends high signal, is immediately performed closedown electrodynamic valve 39,2 seconds closedown electrodynamic valves 46 of time delay；When laying in oil tank 38 oil level deficiency, trigger low liquidometer 40, send signal of telecommunication Logic Priority immediately and close electrodynamic valve 39, two seconds closedown electrodynamic valves 46 of time delay, continue time delay and open electrodynamic valve 44 in 2 seconds, then time delay opens electrodynamic valve 37 in 30 seconds, it is simultaneously emitted by oil starvation alarm, if laying in oil tank level in 120 seconds still less than high level meter 41, alarm continues, wait watchman manually refuels high level, if the second oil storage tank 33 has enough machine oil to replenish one's stock oil tank 38 to high level meter 41, trigger the signal of telecommunication to refueling siren, electrodynamic valve 37, electrodynamic valve 44, the siren that refuels stops oiling alarm, close electrodynamic valve 37 immediately, electrodynamic valve 44；In second oil storage tank 33 running, we can observe gas-liquid separator oil return time and recirculating oil quantity size by visor 31, when gas-liquid separator oil return reaches the second oil storage tank 33 high level, high level meter 34 sends signal, electrodynamic valve 36 performs opening action, waiting that deposit oil tank 38 signal opens electrodynamic valve 37, electrodynamic valve 44, the second oil storage tank 33 oil return is injected into deposit oil tank 38 by pipeline, when the low liquidometer 35 of the second oil storage tank 33 triggers, send the signal of telecommunication, close electrodynamic valve 33 immediately.
The design focal point of the present invention is: native system is to install back oil system between gas cooler and regenerator and install back oil system between compression outlet and gas cooler, simultaneously at entrainment trap bottom design secondary returning oil system, interior oil is recycled between equipment and pipeline, long period even running, native system the most original oil return system oil return efficiency is obviously improved 10%-30%, oil return operation stability strengthens, and also improves exchanger heat exchange efficiency while oil return improved efficiency.This system uses liquid level signal to interlock with electrically operated valve, compares original system, and automaticity is high；Operation maintenance is convenient.
The above, it it is only presently preferred embodiments of the present invention, not the technical scope of the present invention is imposed any restrictions, therefore every any trickle amendment, equivalent variations and modification above example made according to the technical spirit of the present invention, all still fall within the range of technical solution of the present invention.
Claims (10)
1. a MW level CO 2 trans-critical heat pump oil return system industrial, commercial, it is characterised in that: include CO2Compressor, gas cooler, oil eliminator, differential manometer, filter, regenerator, the first oil storage tank, deposit oil tank, the second oil storage tank, visor and entrainment trap；
This CO2The outlet of compressor connects the entrance of gas cooler, and this oil eliminator is in parallel with differential manometer, and the entrance of oil eliminator and the entrance of differential manometer are all connected with the outlet of gas cooler, the gas outlet of oil eliminator and the gas outlet of differential manometer and are all connected with the entrance of regenerator；Oil eliminator connects downtake pipe, and the oil-out of oil eliminator connects the entrance of filter, and the outlet of filter is connected with the first oil storage tank, and the first oil storage tank is connected with deposit oil tank, the first oil storage tank and CO2The oil return opening of compressor is connected, first oil storage tank is connected with oil eliminator import supervisor, first oil storage tank increases cross over pipe with deposit oil tank and is connected, cross over pipe connects second exhaust pipe, deposit oil tank increases artificial oil fuel tube, this entrainment trap is connected with one end of visor, and the other end of visor and the second oil storage tank connect, and the second oil storage tank is connected with deposit oil tank.
2. a MW level CO 2 trans-critical heat pump oil return system industrial, commercial, it is characterised in that: include CO2Compressor, oil eliminator, differential manometer, filter, gas cooler, regenerator, oil cooler, the first oil storage tank, deposit oil tank, the second oil storage tank, visor and entrainment trap；
This oil eliminator is in parallel with differential manometer, and the entrance of oil eliminator and the entrance of differential manometer are all connected with CO2The outlet of compressor, the gas outlet of oil eliminator and the gas outlet of differential manometer are all connected with the entrance of gas cooler, and the outlet of gas cooler connects the entrance of regenerator；Oil eliminator connects downtake pipe, the oil-out of oil eliminator and the entrance of oil cooler, and the outlet of oil cooler connects the entrance of filter, and the outlet of filter connects the first oil storage tank, and the first oil storage tank is connected with deposit oil tank, the first oil storage tank and CO2The oil return opening of compressor is connected, first oil storage tank is connected with oil eliminator import supervisor, first oil storage tank increases cross over pipe with deposit oil tank and is connected, cross over pipe connects second exhaust pipe, deposit oil tank increases artificial oil fuel tube, this entrainment trap is connected with one end of visor, and the other end of visor and the second oil storage tank connect, and the second oil storage tank is connected with deposit oil tank.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterised in that: described oil eliminator is that two covering devices are in parallel.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterized in that: on described cross over pipe, valve is installed, on this second exhaust pipe, pressure relief valve is installed, first oil storage tank is connected with oil eliminator import supervisor, and import supervisor installs electrodynamic valve.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterised in that: the installation site of described first oil storage tank is less than the installation site of deposit oil tank.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterised in that: the installation site of described second oil storage tank is less than the installation site of entrainment trap.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterized in that: described first oil storage tank is provided with high level meter and low liquidometer, this low liquidometer exports low liquid level signal and controls the electrodynamic valve cut out of the air bleeding valve on second exhaust pipe and deposit oil tank import, electrodynamic valve on Time Delay Opening cross over pipe and the electrodynamic valve on deposit oil tank petroleum pipeline simultaneously, this high level meter output high level signal controls to close the electrodynamic valve on cross over pipe and the electrodynamic valve on deposit oil tank flowline.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterized in that: described deposit oil tank is provided with high level meter and low liquidometer, this low liquidometer exports low liquid level signal and controls to cut out the electrodynamic valve on cross over pipe and the electrodynamic valve of deposit oil tank flowline, open the air bleeding valve on second exhaust pipe and the electrodynamic valve of deposit oil tank import, high level meter output high level signal at stop air bleeding valve and the electrodynamic valve of deposit oil tank oil inlet.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterized in that: described second oil storage tank is provided with high level meter and low liquidometer, this high level meter output high level signal controls the electrodynamic valve of the second oil storage tank flowline and opens, and low liquid level signal controls the electrodynamic valve of the second oil storage tank flowline and closes.
One the most according to claim 1 and 2 MW industrial, commercial level CO 2 trans-critical heat pump oil return system, it is characterised in that: described CO2Liquidometer is installed on compressor, is provided with liquid level signal, when having oil liquid level signal, close CO2Electrodynamic valve on the oil return pipe of compressor, and open deposit oil tank and the electrodynamic valve on the cross over pipe of oil eliminator import supervisor；During oil-free signal, open CO2Electrodynamic valve on the oil return pipe of compressor, cuts out deposit oil tank and the electrodynamic valve on the cross over pipe of oil eliminator import supervisor.
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| CN201620310568.8U CN205580038U (en) | 2016-04-14 | 2016-04-14 | Supercritical carbon dioxide heat pump return oil system is striden to industrial, commercial MW level |
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| CN201620310568.8U CN205580038U (en) | 2016-04-14 | 2016-04-14 | Supercritical carbon dioxide heat pump return oil system is striden to industrial, commercial MW level |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018084375A (en) * | 2016-11-24 | 2018-05-31 | ダイキン工業株式会社 | Freezing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018084375A (en) * | 2016-11-24 | 2018-05-31 | ダイキン工業株式会社 | Freezing device |
| WO2018097154A1 (en) * | 2016-11-24 | 2018-05-31 | ダイキン工業株式会社 | Refrigeration device |
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