CN205048777U - Nuclear level direct expansion combination formula air -handling unit - Google Patents
Nuclear level direct expansion combination formula air -handling unit Download PDFInfo
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- CN205048777U CN205048777U CN201520653766.XU CN201520653766U CN205048777U CN 205048777 U CN205048777 U CN 205048777U CN 201520653766 U CN201520653766 U CN 201520653766U CN 205048777 U CN205048777 U CN 205048777U
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- 239000007788 liquid Substances 0.000 claims description 42
- 238000012545 processing Methods 0.000 claims description 42
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 claims description 11
- 230000008439 repair process Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 74
- 238000005057 refrigeration Methods 0.000 abstract description 7
- 239000010725 compressor oil Substances 0.000 abstract description 3
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model discloses a nuclear level direct expansion combination formula air -handling unit, control and adopt the evaporimeter to force the mode that oil return control combined together compressor both ends pressure differential through adopt servo main valve at external oil separator exit end, realized carrying out the effective control to the whole refrigerating system's of unit oil return, the unit can utilize refrigerating system's pressure differential itself to guarantee the compressor oil return and guarantee the evaporimeter oil return, thereby guarantee that the unit can continuously move the whole year, ensure that nuclear power generating sets purify conditioning air's supply, and realizing high reliability, high refrigeration efficiency, make nuclear power generating sets move more safety and stability.
Description
Technical field
The utility model relates to artificial cooling technical field field, and in particular a kind of core level directly evaporates combined air processing group.
Background technology
Current used in nuclear power station core level directly evaporates the oil return of combined air processing group refrigeration system many employings oil pump to ensure the normal oil return of cooling cycle system, and the increase of hydraulic pump control system, add the design complexity of whole unit electrical system, improve the fault rate of whole unit; Core level is directly evaporated combined air processing group and mostly is one of nuclear power plant's air-conditioning system nucleus equipment, unit requires whole year operation, and in running, oil pump can break down because of frequent start-stop, thus causing whole air-treatment unit to be shut down, the equipment had a strong impact in nuclear power plant normally runs; And oil pump breaks down because of frequent start-stop and also can cause the problem of oil return of air-conditioning system Ultra-low load operation evaporimeter, instructions for use can not be met.
Therefore, prior art has yet to be improved and developed.
Utility model content
The purpose of this utility model is to provide a kind of core level directly to evaporate combined air processing group; be intended to solve existing used in nuclear power station core level directly evaporate the oil pump that combined air processing group refrigeration system adopts and break down because of frequent start-stop, cause whole air-treatment unit to be shut down and the problem of air-conditioning system Ultra-low load operation evaporimeter oil return.
The technical solution of the utility model is as follows:
A kind of core level directly evaporates combined air processing group, comprise for the compressor by low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant, lower the temperature for the high pressure gaseous refrigerant by described compressor being discharged with heat exchange with outside and become the condenser of cryogenic high pressure liquid state, absorb heat for making low-temp low-pressure liquid refrigerants and be vaporizated into evaporimeter and the control system of the gaseous coolant of low-temp low-pressure, described condenser inlet end is connected with the port of export of compressor, the port of export of condenser is connected with the arrival end of evaporimeter, the port of export of evaporimeter is connected with the arrival end of described compressor, together with compressor and compressor electric motor are fixed on by shaft coupling, condenser place is provided with the axial flow blower for accelerating condenser heat radiation, described evaporimeter air outlet place is provided with centrifugal blower, centrifugal blower is connected with motor, wherein, described evaporimeter air outlet place also sets out air temperature sensor, compressor place is provided with the spool displacement sensor for detecting compressor slide valve position, be provided with the servo main valve for setting up pressure reduction fast between the arrival end of described compressor outlet and described condenser, pilot valve is arranged on servo main valve, and the pressure measurement capillary on pilot valve is connected to the arrival end of compressor, external oil eliminator is also provided with between the arrival end of described servo main valve and described compressor outlet, the arrival end of described external oil eliminator is connected with the port of export of described compressor, the port of export of described external oil eliminator is connected with the arrival end of described servo main valve, described external oil eliminator is also provided with oil revolving end, and the oil revolving end of described external oil eliminator is connected with described suction port of compressor end, be connected with the first oil pressure difference controller for controlling described compressor two ends pressure reduction between described suction port of compressor end and the port of export, the high pressure of compressor outlet and compressor air-discharging side detects the second oil pressure difference controller be connected with between mouth for controlling the built-in oil strainer pressure reduction of compressor, the motor of described compressor electric motor, axial flow blower, centrifugal blower, the first oil pressure difference controller, the second oil pressure difference controller, leaving air temp sensor are all connected with control system with spool displacement sensor.
Described core level directly evaporates combined air processing group, wherein, the oil revolving end of described external oil eliminator is connected by the 4th magnetic valve with described suction port of compressor end, also check valve is provided with between 4th magnetic valve and suction port of compressor end, be provided with granular membrane between the oil revolving end of external oil eliminator and the 4th magnetic valve, described 4th magnetic valve is connected with control system.
Described core level directly evaporates combined air processing group, and wherein, described evaporimeter arranges 2, comprises the first evaporimeter and the second evaporimeter, is connected in parallel between the first evaporimeter and the second evaporimeter; Described condenser arranges 4, comprises the first condenser, the second condenser, the 3rd condenser and the 4th condenser, described first condenser, the second condenser, is connected in parallel between the 3rd condenser and the 4th condenser; First evaporimeter is connected with the port of export of the first condenser, the second condenser, the 3rd condenser and the 4th condenser with the arrival end of the second evaporimeter, first evaporimeter is connected with the arrival end of described compressor with the port of export of the second evaporimeter, and the first condenser, the second condenser, the 3rd condenser are connected with the port of export of compressor with the arrival end of the 4th condenser; Gas-liquid separator is connected with between the arrival end of described compressor and the port of export of the first evaporimeter and the second evaporimeter, the arrival end of the first evaporimeter and the second evaporimeter and the first condenser, the second condenser, between the 3rd condenser and the port of export of the 4th condenser, be connected with liquid reservoir, between the arrival end of liquid reservoir and the first evaporimeter and the second evaporimeter, be connected with device for drying and filtering.
Described core level directly evaporates combined air processing group, wherein, the port of export of described device for drying and filtering is connected with the first electromagnetic valve entrance end, and the port of export of the first magnetic valve is connected with the arrival end of the second magnetic valve, and the port of export of the first magnetic valve is also connected with the arrival end of the 3rd magnetic valve; The port of export of the second magnetic valve is connected with the first expansion valve inlet end, and the first expansion valve outlet end is connected with the first knockout arrival end, and the first knockout port of export is connected with the first evaporator end; The port of export of the 3rd magnetic valve is connected with the second expansion valve inlet end, and the second expansion valve outlet end is connected with the second knockout arrival end, and the second knockout port of export is connected with the second evaporator end.
Described core level directly evaporates combined air processing group, wherein, is also provided with the first ball valve for keeping in repair between the port of export of described servo main valve and the arrival end of condenser; The 4th ball valve for keeping in repair is provided with between the port of export of described gas-liquid separator arrival end and described first evaporimeter; The 6th ball valve for keeping in repair is provided with between the port of export of described gas-liquid separator arrival end and described second evaporimeter; The second ball valve is connected with between the arrival end of the port of export of described first magnetic valve and the second magnetic valve and the 3rd magnetic valve; The 3rd ball valve is connected with between the port of export of described second magnetic valve and the first expansion valve inlet end; The 5th ball valve is provided with between the port of export of the 3rd magnetic valve and the second expansion valve inlet end; The port of export of servo main valve is also connected with the arrival end of the 7th ball valve, the arrival end of the 7th ball valve is also connected with the arrival end of the first ball valve, the port of export of the 7th ball valve is connected with the arrival end of the 5th magnetic valve, and the port of export of the 7th ball valve is also connected with the arrival end of the 6th magnetic valve; The port of export of the 5th magnetic valve is connected with the arrival end of the 8th ball valve, and the port of export of the 8th ball valve is connected with the port of export of the first expansion valve, and the port of export of the 8th ball valve is also connected with the arrival end of the first knockout; The port of export of the 6th magnetic valve is connected with the arrival end of the 9th ball valve, and the port of export of the 9th ball valve is connected with the port of export of the second expansion valve, and the port of export of the 9th ball valve is also connected with the arrival end of the second knockout.
Described core level directly evaporates combined air processing group, wherein, also be provided with for controlling the first condensing pressure controller that axial flow blower divides into groups to run and the second condensing pressure controller between the described liquid reservoir port of export and described device for drying and filtering arrival end, described first condensing pressure controller is all connected with control system with the second condensing pressure controller, first axial flow blower and motor thereof, second axial flow blower and motor thereof, 3rd axial flow blower and motor thereof, 4th axial flow blower and motor thereof, 5th axial flow blower and motor thereof, 6th axial flow blower and motor thereof, 7th axial flow blower and motor thereof are all connected with control system with the 8th axial flow blower and motor thereof, first condensing pressure controller controls the first axial flow blower and motor thereof by control system, second axial flow blower and motor thereof, the start-stop of the 5th axial flow blower and motor and the 6th axial flow blower and motor thereof, second condensing pressure controller controls the 3rd axial flow blower and motor thereof by control system, 4th axial flow blower and motor thereof, the start-stop of the 7th axial flow blower and motor and the 8th axial flow blower and motor thereof.
Described core level directly evaporates combined air processing group, and wherein, described core level is directly evaporated combined air processing group and comprised outdoor structure disposed in the outdoor and doors structure disposed in the interior, and outdoor structure comprises compressor, compressor electric motor, shaft coupling, external oil eliminator, servo main valve, first ball valve, first condenser, second condenser, 3rd condenser, 4th condenser, liquid reservoir, device for drying and filtering, first magnetic valve, 4th magnetic valve, second ball valve, 7th ball valve, gas-liquid separator, granular membrane, check valve, pilot valve, first oil pressure difference controller, second oil pressure difference controller, first condensing pressure controller, second condensing pressure controller, first axial flow blower and motor thereof, second axial flow blower and motor thereof, 3rd axial flow blower and motor thereof, 4th axial flow blower and motor thereof, 5th axial flow blower and motor thereof, 6th axial flow blower and motor thereof, 7th axial flow blower and motor thereof, 8th axial flow blower and motor thereof, start cabinet and instrument control case, doors structure comprises the second magnetic valve, the 3rd magnetic valve, the 5th magnetic valve, the 6th magnetic valve, the 3rd ball valve, the 4th ball valve, the 5th ball valve, the 6th ball valve, the 8th ball valve, the 9th ball valve, the first expansion valve, the second expansion valve, the first knockout, the second knockout, the first evaporimeter, the second evaporimeter, centrifugal blower and motor, roughing efficiency air filter, medium effeciency filter, steam pipe coil, water fender, leaving air temp sensor.
Described core level directly evaporates combined air processing group, and wherein, described compressor is opened compressor, and compressor electric motor is 1E level, K3 nucleoid level motor; Described first evaporimeter and the second evaporimeter are copper pipe multipass crossfinned tube evaporator; Described first condenser, the second condenser, the 3rd condenser and the 4th condenser are copper pipe nest plate type condenser; Described first expansion valve and the second expansion valve are heating power expansion valve; Described centrifugal blower is core level centrifugal blower, and centrifugal blower motor is 1E level, K3 nucleoid level motor; Described first axial flow blower, the second axial flow blower, the 3rd axial flow blower, the 4th axial flow blower, the 5th axial flow blower, the 6th axial flow blower, the 7th axial flow blower and the 8th axial flow blower are core level axial flow blower, and Axial-flow fan motor is 1E, K3 class level core level motor; Described external oil eliminator is the external oil eliminator of core level; Described liquid reservoir is core level liquid reservoir; Described gas-liquid separator is core level gas-liquid separator.
Described core level directly evaporates combined air processing group, and wherein, described control system comprises startup cabinet and instrument control case, and described startup cabinet is 1E level, K3 nucleoid level starts cabinet; It is nuclear safety 3 grades that described core level directly evaporates combined air processing group.
The beneficial effects of the utility model: the utility model directly evaporates combined air processing group and control method thereof by providing a kind of core level, this unit is by adopting at the external oil eliminator port of export servo main valve to control compressor two ends pressure reduction and adopting evaporimeter to force oil return to control the mode combined, achieve and the oil return of the whole refrigeration system of unit is control effectively, unit can utilize the pressure reduction of refrigeration system itself ensure compressor oil return and ensure evaporimeter oil return, thus ensure that unit whole year can continuous service, guarantee that nuclear power generating sets purification regulates the supply of air, its reliability is high, refrigerating efficiency is high, nuclear power generating sets are run safer stable.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model center level directly evaporates combined air processing group.
Fig. 2 is the front view that the utility model center level directly evaporates combined air processing group outdoor structure.
Fig. 3 is the left view that the utility model center level directly evaporates combined air processing group outdoor structure.
Fig. 4 is the top view that the utility model center level directly evaporates combined air processing group outdoor structure.
Fig. 5 is the front view that the utility model center level directly evaporates combined air processing group doors structure.
Fig. 6 is the flow chart of steps that the utility model center level directly evaporates combined air processing group control method.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, clearly, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
As Figure 1-5, this core level is directly evaporated combined air processing group and is comprised for the compressor 1 by low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant, for becoming the condenser of cryogenic high pressure liquid state by being lowered the temperature by the high pressure gaseous refrigerant that described compressor 1 is discharged with heat exchange with outside, absorb heat for making low-temp low-pressure liquid refrigerants and be vaporizated into evaporimeter and the control system of the gaseous coolant of low-temp low-pressure, described condenser place is provided with the axial flow blower for accelerating condenser heat radiation, described evaporimeter air outlet place is provided with centrifugal blower 57, centrifugal blower 57 is connected with motor 56, evaporimeter air outlet place also sets out air temperature sensor 39, compressor 1 place is provided with the spool displacement sensor for detecting compressor 1 spool position, described condenser inlet end is connected with the port of export of compressor 1, the port of export of condenser is connected with the arrival end of evaporimeter, the port of export of evaporimeter is connected with the arrival end of described compressor 1, together with described compressor 1 and compressor electric motor 40 are fixed on by shaft coupling 41, be provided with the servo main valve 3 for setting up pressure reduction fast between described compressor 1 port of export and the arrival end of described condenser, pilot valve 32 is arranged on servo main valve 3, and the pressure measurement capillary on pilot valve 32 is connected to the arrival end of compressor 1, external oil eliminator 2 is also provided with between the arrival end of described servo main valve 3 and described compressor 1 port of export, the arrival end of described external oil eliminator 2 is connected with the port of export of described compressor 1, the port of export of described external oil eliminator 2 is connected with the arrival end of described servo main valve 3, described external oil eliminator 2 is also provided with oil revolving end, and the oil revolving end of described external oil eliminator 2 is connected with described compressor 1 arrival end, be connected with the first oil pressure difference controller 26 for controlling described compressor 1 two ends pressure reduction between described compressor 1 arrival end and the port of export, the high pressure of compressor 1 port of export and compressor 1 exhaust side detects the second oil pressure difference controller 27 be connected with between mouth for controlling the built-in oil strainer pressure reduction of compressor 1, described compressor electric motor 40, axial flow blower, motor 56, first oil pressure difference controller 26, second oil pressure difference controller 27, leaving air temp sensor 39 are all connected with control system with spool displacement sensor.
Particularly, flow direction for the ease of controlling between external oil eliminator 2 and compressor 1 is smooth and easy with guarantee unit operation, the oil revolving end of described external oil eliminator 2 is connected by the 4th magnetic valve 28 with described compressor 1 arrival end, check valve 30 is also provided with between 4th magnetic valve 28 and compressor 1 arrival end, be provided with granular membrane 29 between the oil revolving end of external oil eliminator 2 and the 4th magnetic valve 28, described 4th magnetic valve 28 is connected with control system.
Particularly, described evaporimeter is arranged more than 2 or 2 (in the present embodiment, described evaporimeter arranges 2, is connected in parallel between multiple evaporimeter), comprise the first evaporimeter 17 and be connected in parallel between the second evaporimeter 23, first evaporimeter 17 and the second evaporimeter 23; Described condenser arranges 4, comprises the first condenser 5, second condenser 6, the 3rd condenser 7 and the 4th condenser 8, described first condenser 5, second condenser 6, is connected in parallel between the 3rd condenser 7 and the 4th condenser 8; First evaporimeter 17 is connected with the port of export of the first condenser 5, second condenser 6, the 3rd condenser 7 and the 4th condenser 8 with the arrival end of the second evaporimeter 23, first evaporimeter 17 is connected with the arrival end of described compressor 1 with the port of export of the second evaporimeter 23, and the first condenser 5, second condenser 6, the 3rd condenser 7 are connected with the port of export of compressor 1 with the arrival end of the 4th condenser 8; The arrival end of described compressor 1 and be connected with gas-liquid separator 25 between the first evaporimeter 17 and the port of export of the second evaporimeter 23, arrival end and first condenser 5, second condenser 6 of the first evaporimeter 17 and the second evaporimeter 23, between the 3rd condenser 7 and the port of export of the 4th condenser 8, be connected with liquid reservoir 9, liquid reservoir 9 and be connected with device for drying and filtering 10 between the first evaporimeter 17 and the arrival end of the second evaporimeter 23.
Particularly, for the ease of controlling the flow direction of refrigerant in unit, the port of export of described device for drying and filtering 10 is connected with the first magnetic valve 11 arrival end, the port of export of the first magnetic valve 11 is connected with the arrival end of the second magnetic valve 13, and the port of export of the first magnetic valve 11 is also connected with the arrival end of the 3rd magnetic valve 19; The port of export of the second magnetic valve 13 is connected with the first expansion valve 15 arrival end, and first expansion valve 15 port of export is connected with the first knockout 16 arrival end, and first knockout 16 port of export is connected with the first evaporimeter 17 entrance point; The port of export of the 3rd magnetic valve 19 is connected with the second expansion valve 21 arrival end, and second expansion valve 21 port of export is connected with the second knockout 22 arrival end, and second knockout 22 port of export is connected with the second evaporimeter 23 entrance point.
For the ease of maintenance, between the port of export of described servo main valve 3 and the arrival end of condenser, be also provided with the first ball valve 4 for keeping in repair; The 4th ball valve 18 for keeping in repair is provided with between the port of export of described gas-liquid separator 25 arrival end and described first evaporimeter 17; The 6th ball valve 24 for keeping in repair is provided with between the port of export of described gas-liquid separator 25 arrival end and described second evaporimeter 23; The second ball valve 12 is connected with between the port of export of described first magnetic valve 11 and the arrival end of the second magnetic valve 13 and the 3rd magnetic valve 19; The 3rd ball valve 14 is connected with between the port of export of described second magnetic valve 13 and the first expansion valve 15 arrival end; The 5th ball valve 20 is provided with between the port of export of the 3rd magnetic valve 19 and the second expansion valve 21 arrival end; The port of export of servo main valve 3 is also connected with the arrival end of the 7th ball valve 31, the arrival end of the 7th ball valve 31 is also connected with the arrival end of the first ball valve 4, the port of export of the 7th ball valve 31 is connected with the arrival end of the 5th magnetic valve 35, and the port of export of the 7th ball valve 31 is also connected with the arrival end of the 6th magnetic valve 37; The port of export of the 5th magnetic valve 35 is connected with the arrival end of the 8th ball valve 36, and the port of export of the 8th ball valve 36 is connected with the port of export of the first expansion valve 15, and the port of export of the 8th ball valve 36 is also connected with the arrival end of the first knockout 16; The port of export of the 6th magnetic valve 37 is connected with the arrival end of the 9th ball valve 38, and the port of export of the 9th ball valve 38 is connected with the port of export of the second expansion valve 21, and the port of export of the 9th ball valve 38 is also connected with the arrival end of the second knockout 22.
Further, the first condensing pressure controller 33 and the second condensing pressure controller 34 dividing into groups to run for controlling axial flow blower is also provided with between described liquid reservoir 9 port of export and described device for drying and filtering 10 arrival end, described first condensing pressure controller 33 is connected with the second condensing pressure controller 34 and control system, first axial flow blower and motor 49 thereof, second axial flow blower and motor 42 thereof, 3rd axial flow blower and motor 48 thereof, 4th axial flow blower and motor 43 thereof, 5th axial flow blower and motor 47 thereof, 6th axial flow blower and motor 44 thereof, 7th axial flow blower and motor 46 thereof are all connected with control system with the 8th axial flow blower and motor 45 thereof, first condensing pressure controller 33 controls the first axial flow blower and motor 49 thereof by control system, second axial flow blower and motor 42 thereof, the start-stop of the 5th axial flow blower and motor 47 and the 6th axial flow blower and motor 44 thereof, second condensing pressure controller 34 controls the 3rd axial flow blower and motor 48 thereof by control system, 4th axial flow blower and motor 43 thereof, the start-stop of the 7th axial flow blower and motor 46 and the 8th axial flow blower and motor 45 thereof.
Further, this core level directly evaporates combined air processing group is nuclear safety 3 grades.
Described compressor 1 is opened compressor; Described compressor electric motor 40 is 1E level, K3 nucleoid level motor.
Described first evaporimeter 17 and the second evaporimeter 23 are copper pipe multipass crossfinned tube evaporator.
Described first condenser 5, second condenser 6, the 3rd condenser 7 and the 4th condenser 8 are copper pipe nest plate type condenser.
Described first expansion valve 15 and the second expansion valve 21 are heating power expansion valve;
Described centrifugal blower 57 is core level centrifugal blower, and motor 56 is 1E level, K3 nucleoid level motor.
Described first axial flow blower 49, second axial flow blower 42, the 3rd axial flow blower 48, the 4th axial flow blower 43, the 5th axial flow blower 47, the 6th axial flow blower 44, the 7th axial flow blower 46 and the 8th axial flow blower 45 are core level axial flow blower, and Axial-flow fan motor is 1E, K3 class level core level motor.
Described external oil eliminator 2 is the external oil eliminator of core level.
Described liquid reservoir 9 is core level liquid reservoir.
Described gas-liquid separator 25 is core level gas-liquid separator.
Described control system comprises startup cabinet and instrument control case, and described startup cabinet 51 is 1E level, K3 nucleoid level starts cabinet.
Machine 1 and leaving air temp sensor 39 control by compression by control system for described second magnetic valve 13 and the 3rd magnetic valve 19; Described 5th magnetic valve 35 is controlled by the described position of compressor 1 spool displacement sensor and the on off state of the second magnetic valve 13 by control system; Described 6th magnetic valve 37 is controlled by the described position of compressor 1 spool displacement sensor and the on off state of the 3rd magnetic valve 19 by control system.
Described first magnetic valve 11 and described compressor 1 interlocked control, when compressor 1 starts, the first magnetic valve 11 is opened simultaneously, and after certain setting-up time shut down by compressor 1, the first magnetic valve 11 cuts out; Described centrifugal blower 57 and motor 56 thereof and described compressor 1 interlocked control, after centrifugal blower 57 and motor 56 thereof start certain setting-up time, compressor 1 starts immediately; After certain setting-up time shut down by compressor 1, centrifugal blower 57 and motor 56 thereof are shut down; Described 4th magnetic valve 28 and described compressor 1 interlocked control, open simultaneously, close simultaneously.
Particularly, described core level is directly evaporated combined air processing group and is comprised outdoor structure disposed in the outdoor and doors structure disposed in the interior, described compressor 1, compressor electric motor 40, shaft coupling 41, external oil eliminator 2, servo main valve 3, first ball valve 4, first condenser 5, second condenser 6, 3rd condenser 7, 4th condenser 8, liquid reservoir 9, device for drying and filtering 10, first magnetic valve 11, 4th magnetic valve 28, second ball valve 12, 7th ball valve 31, gas-liquid separator 25, granular membrane 29, check valve 30, pilot valve 32, first oil pressure difference controller 26, second oil pressure difference controller 27, first condensing pressure controller 33, second condensing pressure controller 34, first axial flow blower and motor 49 thereof, second axial flow blower and motor 42 thereof, 3rd axial flow blower and motor 48 thereof, 4th axial flow blower and motor 43 thereof, 5th axial flow blower and motor 47 thereof, 6th axial flow blower and motor 44 thereof, 7th axial flow blower and motor 46 thereof, 8th axial flow blower and motor 45 thereof, start cabinet 51, instrument control case 50 forms outdoor structure, second magnetic valve 13, 3rd magnetic valve 19, 5th magnetic valve 35, 6th magnetic valve 37, 3rd ball valve 14, 4th ball valve 18, 5th ball valve 20, 6th ball valve 24, 8th ball valve 36, 9th ball valve 38, first expansion valve 15, second expansion valve 21, first knockout 16, second knockout 22, first evaporimeter 17, second evaporimeter 23, centrifugal blower 57 and motor 56 thereof, roughing efficiency air filter 52, medium effeciency filter 53, steam pipe coil 54, water fender 55, leaving air temp sensor 39 forms doors structure.
As shown in Figure 6, a kind of core level as described above directly evaporates the control method of combined air processing group, specifically comprises the following steps:
Step S110: after core level directly evaporates the energising of combined air processing group, setting centrifugal blower 57 is t1 with difference start-up time of compressor 1, after compressor 1 starts, the shielding time period of the first oil pressure difference controller 26 and the second oil pressure difference controller 27 is t2, servo main valve pressure set points is f1, first condensing pressure controller pressure set points is f2, second condensing pressure controller pressure set points is f3, and leaving air temp sensor temperature setting value is C1;
Step S120: control system starts unit according to input instruction, first centrifugal blower 57 and motor 56 thereof start, compressor 1 is delay start after centrifugal blower 57 starts the t1 time, and the first magnetic valve 11, second magnetic valve 13/ the 3rd magnetic valve 19, the 4th magnetic valve 28 start at compressor 1 to be opened simultaneously; First oil pressure difference controller 26 and the second oil pressure difference controller 27 start in t2 section at compressor 1 and are in masked state, after t2, the first oil pressure difference controller 26 and the second oil pressure difference controller 27 in running order;
Step S130: when to reach servo main valve pressure set points be f1 for compressor 1 outlet pressures and inlet pressure difference, the first oil pressure difference controller 26 is closed automatically, and refrigerant enters condenser by servo main valve 3;
Step S140: whether control system reaches the first condensing pressure controller pressure set points according to fluid pressure in pipeline is that f2 controls the first axial flow blower and motor 49, second axial flow blower thereof and motor 42, the 5th axial flow blower and motor 47 thereof, the opening or stop of the 6th axial flow blower and motor 44 thereof; Whether control system reaches the second condensing pressure controller pressure set points according to fluid pressure in pipeline is that f3 controls the 3rd axial flow blower and motor 48, the 4th axial flow blower and motor 43 thereof, the opening or stop of the 7th axial flow blower and motor 46, the 8th axial flow blower and motor 45 thereof;
Step S150: whether control system reaches leaving air temp sensor temperature setting value according to the leaving air temp that leaving air temp sensor 39 detects in real time is the switch that C1 controls the 3rd magnetic valve 19/ second magnetic valve 13;
Step S160: control system controls the 5th magnetic valve 35 switch according to the on off state of the position of spool displacement sensor and the second magnetic valve 13; Control system controls the 6th magnetic valve 37 switch according to the on off state of the position of spool displacement sensor and the 3rd magnetic valve 19.
In the present embodiment, in described step S160, control system controls the 5th magnetic valve 35 switch according to the on off state of the position of spool displacement sensor and the second magnetic valve 13, namely when the second magnetic valve 13 is in open mode and spool displacement sensor is in below 50%, control system controls the 5th magnetic valve 35 and carries out switch (as shut-in time 3600s, opening time 30s) according to the setting-up time cycle; Control system controls the 5th magnetic valve 35 switch according to the on off state of the position of spool displacement sensor and the 3rd magnetic valve 19, namely when the 3rd magnetic valve 19 is in open mode and valve position displacement sensor is in below 50%, control system controls the 6th magnetic valve 37 and carries out switch (shut-in time 3600s, opening time 30s) according to the setting-up time cycle.
The present invention carries out controlling to force oil return to control the mode combined with evaporimeter of sampling owing to arranging servo main valve 3 pairs of compressor 1 two ends pressure reduction at the port of export of external oil eliminator 2, and system oil return efficiency can be made higher; Unit can regulate the load or unload of compressor 1 according to the leaving air temp of evaporimeter, ensure that unit is in energy-efficient state and runs, greatly save power, reduce operation cost; Adopt condensing pressure controller to control the group number of axial flow blower and motor start and stop thereof, namely according to the change of operating mode, regulated the air quantity of condenser by the control of condensing pressure, ensure that unit is in a safe and reliable state and runs; The technique scheme that the present invention adopts; make described core level directly evaporate combined air processing group to overcome in unit whole year operation process to break down due to the frequent start-stop of oil pump and cause the problem of compressor emergency shutdown; overcome the problem of unit evaporimeter oil return difficulty when Ultra-low load operation; ensure that unit whole year can continuous service; guarantee that nuclear power generating sets purification regulates the supply of air; its reliability is high, and refrigerating efficiency is high, nuclear power generating sets is run safer stable.
This core level directly evaporates combined air processing group by adopting at the external oil eliminator port of export servo main valve to control compressor two ends pressure reduction and adopting evaporimeter to force oil return to control the mode combined, achieve and the oil return of the whole refrigeration system of unit is control effectively, unit can utilize the pressure reduction of refrigeration system itself ensure compressor oil return and ensure evaporimeter oil return, thus ensure that unit whole year can continuous service, guarantee that nuclear power generating sets purification regulates the supply of air, its reliability is high, refrigerating efficiency is high, nuclear power generating sets are run safer stable.
Should be understood that; application of the present utility model is not limited to above-mentioned citing; for those of ordinary skills, can be improved according to the above description or convert, all these improve and convert the protection domain that all should belong to the utility model claims.
Claims (9)
1. a core level directly evaporates combined air processing group, comprise for the compressor by low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant, lower the temperature for the high pressure gaseous refrigerant by described compressor being discharged with heat exchange with outside and become the condenser of cryogenic high pressure liquid state, absorb heat for making low-temp low-pressure liquid refrigerants and be vaporizated into evaporimeter and the control system of the gaseous coolant of low-temp low-pressure, described condenser inlet end is connected with the port of export of compressor, the port of export of condenser is connected with the arrival end of evaporimeter, the port of export of evaporimeter is connected with the arrival end of described compressor, together with compressor and compressor electric motor are fixed on by shaft coupling, condenser place is provided with the axial flow blower for accelerating condenser heat radiation, described evaporimeter air outlet place is provided with centrifugal blower, centrifugal blower is connected with motor, it is characterized in that, described evaporimeter air outlet place also sets out air temperature sensor, compressor place is provided with the spool displacement sensor for detecting compressor slide valve position, be provided with the servo main valve for setting up pressure reduction fast between the arrival end of described compressor outlet and described condenser, pilot valve is arranged on servo main valve, and the pressure measurement capillary on pilot valve is connected to the arrival end of compressor, external oil eliminator is also provided with between the arrival end of described servo main valve and described compressor outlet, the arrival end of described external oil eliminator is connected with the port of export of described compressor, the port of export of described external oil eliminator is connected with the arrival end of described servo main valve, described external oil eliminator is also provided with oil revolving end, and the oil revolving end of described external oil eliminator is connected with described suction port of compressor end, be connected with the first oil pressure difference controller for controlling described compressor two ends pressure reduction between described suction port of compressor end and the port of export, the high pressure of compressor outlet and compressor air-discharging side detects the second oil pressure difference controller be connected with between mouth for controlling the built-in oil strainer pressure reduction of compressor, the motor of described compressor electric motor, axial flow blower, centrifugal blower, the first oil pressure difference controller, the second oil pressure difference controller, leaving air temp sensor are all connected with control system with spool displacement sensor.
2. core level according to claim 1 directly evaporates combined air processing group, it is characterized in that, the oil revolving end of described external oil eliminator is connected by the 4th magnetic valve with described suction port of compressor end, also check valve is provided with between 4th magnetic valve and suction port of compressor end, be provided with granular membrane between the oil revolving end of external oil eliminator and the 4th magnetic valve, described 4th magnetic valve is connected with control system.
3. core level according to claim 2 directly evaporates combined air processing group, it is characterized in that, described evaporimeter arranges 2, comprises the first evaporimeter and the second evaporimeter, is connected in parallel between the first evaporimeter and the second evaporimeter; Described condenser arranges 4, comprises the first condenser, the second condenser, the 3rd condenser and the 4th condenser, described first condenser, the second condenser, is connected in parallel between the 3rd condenser and the 4th condenser; First evaporimeter is connected with the port of export of the first condenser, the second condenser, the 3rd condenser and the 4th condenser with the arrival end of the second evaporimeter, first evaporimeter is connected with the arrival end of described compressor with the port of export of the second evaporimeter, and the first condenser, the second condenser, the 3rd condenser are connected with the port of export of compressor with the arrival end of the 4th condenser; Gas-liquid separator is connected with between the arrival end of described compressor and the port of export of the first evaporimeter and the second evaporimeter, the arrival end of the first evaporimeter and the second evaporimeter and the first condenser, the second condenser, between the 3rd condenser and the port of export of the 4th condenser, be connected with liquid reservoir, between the arrival end of liquid reservoir and the first evaporimeter and the second evaporimeter, be connected with device for drying and filtering.
4. core level according to claim 3 directly evaporates combined air processing group, it is characterized in that, the port of export of described device for drying and filtering is connected with the first electromagnetic valve entrance end, the port of export of the first magnetic valve is connected with the arrival end of the second magnetic valve, and the port of export of the first magnetic valve is also connected with the arrival end of the 3rd magnetic valve; The port of export of the second magnetic valve is connected with the first expansion valve inlet end, and the first expansion valve outlet end is connected with the first knockout arrival end, and the first knockout port of export is connected with the first evaporator end; The port of export of the 3rd magnetic valve is connected with the second expansion valve inlet end, and the second expansion valve outlet end is connected with the second knockout arrival end, and the second knockout port of export is connected with the second evaporator end.
5. core level according to claim 4 directly evaporates combined air processing group, it is characterized in that, is also provided with the first ball valve for keeping in repair between the port of export of described servo main valve and the arrival end of condenser; The 4th ball valve for keeping in repair is provided with between the port of export of described gas-liquid separator arrival end and described first evaporimeter; The 6th ball valve for keeping in repair is provided with between the port of export of described gas-liquid separator arrival end and described second evaporimeter; The second ball valve is connected with between the arrival end of the port of export of described first magnetic valve and the second magnetic valve and the 3rd magnetic valve; The 3rd ball valve is connected with between the port of export of described second magnetic valve and the first expansion valve inlet end; The 5th ball valve is provided with between the port of export of the 3rd magnetic valve and the second expansion valve inlet end; The port of export of servo main valve is also connected with the arrival end of the 7th ball valve, the arrival end of the 7th ball valve is also connected with the arrival end of the first ball valve, the port of export of the 7th ball valve is connected with the arrival end of the 5th magnetic valve, and the port of export of the 7th ball valve is also connected with the arrival end of the 6th magnetic valve; The port of export of the 5th magnetic valve is connected with the arrival end of the 8th ball valve, and the port of export of the 8th ball valve is connected with the port of export of the first expansion valve, and the port of export of the 8th ball valve is also connected with the arrival end of the first knockout; The port of export of the 6th magnetic valve is connected with the arrival end of the 9th ball valve, and the port of export of the 9th ball valve is connected with the port of export of the second expansion valve, and the port of export of the 9th ball valve is also connected with the arrival end of the second knockout.
6. core level according to claim 5 directly evaporates combined air processing group, it is characterized in that, also be provided with for controlling the first condensing pressure controller that axial flow blower divides into groups to run and the second condensing pressure controller between the described liquid reservoir port of export and described device for drying and filtering arrival end, described first condensing pressure controller is all connected with control system with the second condensing pressure controller, first axial flow blower and motor thereof, second axial flow blower and motor thereof, 3rd axial flow blower and motor thereof, 4th axial flow blower and motor thereof, 5th axial flow blower and motor thereof, 6th axial flow blower and motor thereof, 7th axial flow blower and motor thereof are all connected with control system with the 8th axial flow blower and motor thereof, first condensing pressure controller controls the first axial flow blower and motor thereof by control system, second axial flow blower and motor thereof, the start-stop of the 5th axial flow blower and motor and the 6th axial flow blower and motor thereof, second condensing pressure controller controls the 3rd axial flow blower and motor thereof by control system, 4th axial flow blower and motor thereof, the start-stop of the 7th axial flow blower and motor and the 8th axial flow blower and motor thereof.
7. core level according to claim 6 directly evaporates combined air processing group, it is characterized in that, described core level is directly evaporated combined air processing group and is comprised outdoor structure disposed in the outdoor and doors structure disposed in the interior, and outdoor structure comprises compressor, compressor electric motor, shaft coupling, external oil eliminator, servo main valve, first ball valve, first condenser, second condenser, 3rd condenser, 4th condenser, liquid reservoir, device for drying and filtering, first magnetic valve, 4th magnetic valve, second ball valve, 7th ball valve, gas-liquid separator, granular membrane, check valve, pilot valve, first oil pressure difference controller, second oil pressure difference controller, first condensing pressure controller, second condensing pressure controller, first axial flow blower and motor thereof, second axial flow blower and motor thereof, 3rd axial flow blower and motor thereof, 4th axial flow blower and motor thereof, 5th axial flow blower and motor thereof, 6th axial flow blower and motor thereof, 7th axial flow blower and motor thereof, 8th axial flow blower and motor thereof, start cabinet, instrument control case, doors structure comprises the second magnetic valve, the 3rd magnetic valve, the 5th magnetic valve, the 6th magnetic valve, the 3rd ball valve, the 4th ball valve, the 5th ball valve, the 6th ball valve, the 8th ball valve, the 9th ball valve, the first expansion valve, the second expansion valve, the first knockout, the second knockout, the first evaporimeter, the second evaporimeter, centrifugal blower and motor, roughing efficiency air filter, medium effeciency filter, steam pipe coil, water fender, leaving air temp sensor.
8. core level according to claim 7 directly evaporates combined air processing group, it is characterized in that, described compressor is opened compressor, and compressor electric motor is 1E level, K3 nucleoid level motor; Described first evaporimeter and the second evaporimeter are copper pipe multipass crossfinned tube evaporator; Described first condenser, the second condenser, the 3rd condenser and the 4th condenser are copper pipe nest plate type condenser; Described first expansion valve and the second expansion valve are heating power expansion valve; Described centrifugal blower is core level centrifugal blower, and centrifugal blower motor is 1E level, K3 nucleoid level motor; Described first axial flow blower, the second axial flow blower, the 3rd axial flow blower, the 4th axial flow blower, the 5th axial flow blower, the 6th axial flow blower, the 7th axial flow blower and the 8th axial flow blower are core level axial flow blower, and Axial-flow fan motor is 1E, K3 class level core level motor; Described external oil eliminator is the external oil eliminator of core level; Described liquid reservoir is core level liquid reservoir; Described gas-liquid separator is core level gas-liquid separator.
9. core level according to claim 8 directly evaporates combined air processing group, it is characterized in that, described control system comprises startup cabinet and instrument control case, and described startup cabinet is 1E level, K3 nucleoid level starts cabinet; It is nuclear safety 3 grades that described core level directly evaporates combined air processing group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653766.XU CN205048777U (en) | 2015-08-27 | 2015-08-27 | Nuclear level direct expansion combination formula air -handling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653766.XU CN205048777U (en) | 2015-08-27 | 2015-08-27 | Nuclear level direct expansion combination formula air -handling unit |
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| Publication Number | Publication Date |
|---|---|
| CN205048777U true CN205048777U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520653766.XU Withdrawn - After Issue CN205048777U (en) | 2015-08-27 | 2015-08-27 | Nuclear level direct expansion combination formula air -handling unit |
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| CN (1) | CN205048777U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066494A (en) * | 2015-08-27 | 2015-11-18 | 广东申菱环境系统股份有限公司 | Nuclear-grade direct evaporation combined type air handling unit and control method thereof |
| CN105910337A (en) * | 2016-05-06 | 2016-08-31 | 宁波工程学院 | Heat pump |
| CN113623908A (en) * | 2021-08-12 | 2021-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal water chilling unit and anti-seismic operation control method thereof |
-
2015
- 2015-08-27 CN CN201520653766.XU patent/CN205048777U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066494A (en) * | 2015-08-27 | 2015-11-18 | 广东申菱环境系统股份有限公司 | Nuclear-grade direct evaporation combined type air handling unit and control method thereof |
| CN105066494B (en) * | 2015-08-27 | 2018-06-22 | 广东申菱环境系统股份有限公司 | One seed nucleus grade directly evaporates combined air processing group and its control method |
| CN105910337A (en) * | 2016-05-06 | 2016-08-31 | 宁波工程学院 | Heat pump |
| CN113623908A (en) * | 2021-08-12 | 2021-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal water chilling unit and anti-seismic operation control method thereof |
| CN113623908B (en) * | 2021-08-12 | 2023-02-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal water chilling unit and anti-seismic operation control method thereof |
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