CN209371553U - A kind of system for centrifugal refrigerating machines - Google Patents
A kind of system for centrifugal refrigerating machines Download PDFInfo
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- CN209371553U CN209371553U CN201920043346.8U CN201920043346U CN209371553U CN 209371553 U CN209371553 U CN 209371553U CN 201920043346 U CN201920043346 U CN 201920043346U CN 209371553 U CN209371553 U CN 209371553U
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Abstract
The utility model discloses a kind of systems for centrifugal refrigerating machines, including PLC control cabinet, Central Control Room, oil pump cabinet, compressor, refrigeration machine, main motor and with the matched starting cabinet of main motor, the PLC control cabinet includes CPU control chip, output switch parameter chip, analog input chip, the CPU control chip and Central Control Room communication connection, the oil pump cabinet includes first pressure sensor group, oil pump and fuel tank and third temperature sensor group, the compressor includes entry guide vane and by-passing valve, the refrigeration machine includes no water protector, cooling water pump, chilled water pump, second pressure sensor group, second temperature sensor group and the 4th temperature sensor group, the main motor includes the first temperature sensor group and cooling fan.By a kind of system for centrifugal refrigerating machines of the utility model, the state of the equipment such as main motor, refrigeration machine can be monitored, and the long-range control to unit may be implemented.
Description
Technical field
The utility model relates to cooling-water machine fields, and in particular to a kind of system for centrifugal refrigerating machines.
Background technique
Centrifugal refrigerating machines are that freon refrigerant evaporates in evaporator absorbs refrigerating medium using electricity as power source
The heat of water freezes, and the freon moist steam after evaporation endothermic is compressed by the compressor into high temperature and high pressure gas, water cooled cold
Become liquid after condenser condensation, enters evaporator recycling through restricting orifice stream.To produce 7 DEG C of -12 DEG C of chilled waters for air-conditioning
End air conditioning.As the application of centrifugal refrigerating machines gradually becomes extensively, operation troubles rate is also intended to the main body of monitoring,
The common failure of centrifugal refrigerating machines has evaporating pressure is too low, condensing pressure is excessively high, high oil temperature, cut off the water supply, motor is born excessively etc.,
Existing centrifugal refrigerating machines are usually that can just repair to it after its failure, not only will affect dependence centrifugation in this way
The use of the equipment of formula water cooler also affects other performances of centrifugal refrigerating machines.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to how to provide a kind of use
In the system of centrifugal refrigerating machines, centrifugal refrigerating machines can be monitored with control.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of system for centrifugal refrigerating machines, including PLC control cabinet, Central Control Room, oil pump cabinet, compressor, refrigeration
Machine, main motor and with the matched starting cabinet of main motor, wherein the PLC control cabinet includes that CPU control chip, switching value are defeated
Chip, analog input chip out, the CPU control chip and Central Control Room communication connection；
The oil pump cabinet includes first pressure sensor group, oil pump and fuel tank and third temperature sensor group, the oil pump
Outlet is equipped with electrothermal relay, is equipped with oil heater in the fuel tank；
The compressor includes entry guide vane and by-passing valve, and the entry guide vane is equipped with Electric Actuator；
The refrigeration machine includes no water protector, cooling water pump, chilled water pump, second pressure sensor group, second temperature
Sensor group and the 4th temperature sensor group；
The main motor includes the first temperature sensor group and cooling fan；
The CPU control chip and the oil pump, electrothermal relay, oil heater, cooling fan, no water protector, starting
Cabinet, the first temperature sensor group, chilled water pump are connected with cooling water pump；
The output switch parameter chip is connected with the Electric Actuator, by-passing valve；
The analog input chip and the first pressure sensor group, second pressure sensor group, second temperature pass
Sensor group, third temperature sensor group, the 4th temperature sensor group, starting cabinet, by-passing valve and entry guide vane connection.
As optimization, the analog input core includes the first analog input chip and the second analog input chip.
As optimization, the first analog input chip and the first pressure sensor group, second pressure sensor
Group, second temperature sensor group are connected with third temperature sensor group；The second analog input chip and four temperature
Sensor group, starting cabinet, by-passing valve and entry guide vane connection.
As optimization, the first temperature sensor group includes the temperature sensor that main motor A phase winding is arranged in, main electricity
The temperature sensor of machine B phase winding, the temperature sensor of main motor C phase winding, the temperature sensor on main motor fore bearing with
And the temperature sensor in main motor rear bearing.
As optimization, the second temperature sensor group include be arranged in the temperature sensor of chilled water pipe import/export with
And the temperature sensor of cooling water pipe import.
As optimization, the third temperature sensor group includes the temperature sensor and oil supply pipe being arranged in fuel tank
On temperature sensor.
As optimization, the 4th temperature sensor group includes the temperature sensor that cooling water pipe outlet is arranged in.
As optimization, the first pressure sensor group includes the pressure sensor that fuel tank internal is arranged in, oil strainer
Interior pressure sensor and the pressure sensor being arranged on oil feed line.
As optimization, the second pressure sensor group includes that setting pressure sensor on an evaporator and setting exist
Pressure sensor on condenser.
As optimization, the PLC control cabinet further includes emergency stop push button and touch screen, and the CPU controls chip and institute
State emergency stop push button and touch screen connection.
The beneficial effects of the utility model are:
By a kind of system for centrifugal refrigerating machines of the utility model, main motor, refrigeration machine etc. can be monitored
The state of equipment, and the long-range control to unit may be implemented.
Detailed description of the invention
Fig. 1 is a kind of structure connection figure of the system for centrifugal refrigerating machines described in the utility model.
In attached drawing, 1 is PLC control cabinet, and 11 control chip for CPU, and 12 be output switch parameter chip, and 13 be analog input
Chip, 131 be the first analog input chip, and 132 be the second analog input chip, and 14 be emergency stop push button, and 15 be touching
Screen is touched, 2 be oil pump cabinet, and 21 be first pressure sensor group, and 22 be oil pump, and 221 be electrothermal relay, and 23 be third temperature sensor
Group, 24 be fuel tank, and 241 be oil heater, and 3 be compressor, and 31 be entry guide vane, and 311 be Electric Actuator, and 32 be by-passing valve, 4
For refrigeration machine, 41 be no water protector, and 42 be cooling water pump, and 43 be chilled water pump, and 44 be second pressure sensor group, and 45 be the
Two temperature sensor groups, 46 be the 4th temperature sensor group, and 5 be main motor, and 51 be the first temperature sensor group, and 52 be cooling wind
Fan, 53 be starting cabinet, and 6 be Central Control Room.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of system for centrifugal refrigerating machines, including PLC control cabinet, Central Control Room, oil pump cabinet, pressure
Contracting machine, refrigeration machine, main motor and with the matched starting cabinet of main motor.Start cabinet and control main motor ON/OFF, main motor is entire
System provides power supply.
PLC control cabinet 1 includes CPU control chip 11, output switch parameter chip 12, analog input chip 13, promptly stops
Vehicle button 14 and touch screen 15, CPU controls chip 11 and Central Control Room 6 communicates to connect.In the present embodiment, analog input core 13 is wrapped
Include the first analog input chip 131 and the second analog input chip 132.
Oil pump cabinet 2 includes first pressure sensor group 21, oil pump 22 and fuel tank 24 and third temperature sensor group 23, oil pump
22 outlets are equipped with electrothermal relay 221, are equipped with oil heater 241 in fuel tank 24.In the present embodiment, first pressure sensor group 21 is wrapped
Include the pressure sensor that fuel tank internal is set, the pressure sensor in oil strainer and the pressure being arranged on oil feed line
Sensor.Third temperature sensor group 23 includes the temperature sensing on the temperature sensor and oil supply pipe being arranged in fuel tank
Device.
Compressor 31 includes entry guide vane 31 and by-passing valve 32, and entry guide vane 31 is equipped with Electric Actuator 311.
Refrigeration machine 4 includes no water protector 41, cooling water pump 42, chilled water pump 43, second pressure sensor group 44, second
Temperature sensor group 45 and the 4th temperature sensor group 46.In the present embodiment, second pressure sensor group 44 includes that setting is being steamed
The pressure sensor sending out the pressure sensor on device and being arranged on condenser, second temperature sensor group 46 include that setting exists
The temperature sensor of chilled water pipe import/export and the temperature sensor of cooling water pipe import, the 4th temperature sensor group 46 packet
Include the temperature sensor that cooling water pipe outlet is set.
Main motor 5 includes the first temperature sensor group 51 and cooling fan 52.In the present embodiment, the first temperature sensor group
Including the temperature sensor of main motor A phase winding, the temperature sensor of main motor B phase winding, main motor C phase winding is arranged in
Temperature sensor, the temperature sensor on main motor fore bearing and the temperature sensor in main motor rear bearing.Cooling fan
The temperature of main motor can be reduced.
CPU controls chip 11 and touch screen 15, emergency stop push button 14, oil pump 22, electrothermal relay 221, oil heater
241, cooling fan 52, no water protector 41, starting cabinet 53, the first temperature sensor group 51, chilled water pump 53 and cooling water pump
42 connections.
In the present embodiment, CPU control chip 11 is the chip of included switching value I/O interface, using Siemens 1215C AC/
DC/RLY chip.The switch value input interface of CPU control chip receives emergency stop push button signal, a distant place for middle control cabinet transmission is opened
Dynamic/stoppings, the transmission of chain stopping signal, no water protector freezing cut off the water supply signal and cooling signal of cutting off the water supply, start what cabinet transmitted
The motor winding temperature of main motor operating state signal and starting cabinet fault-signal, the transmission of the first temperature sensor group overheats letter
Number, oil pump cabinet transmission oil pump operating state signal, oil pump overload signal and heater run signal；CPU control chip is opened
Pass amount output interface output control signal control main motor combined floodgate, main motor separating brake, oil pump open/stop, chilled water pump is run, cooling
Water pump operation, cooling fan run and transmit following status signal to Central Control Room: oil pump operation conditions, is at oily heated condition
System operation conditions, main motor operation conditions, main motor suspend situation.
In the present embodiment, output switch parameter chip 12 uses Siemens SM1232DQ8 chip.12 He of output switch parameter chip
Electric Actuator 311, by-passing valve 32 connect.The Electric Actuator of output switch parameter chip output control signal control entry guide vane
And by-passing valve, control the ON/OFF of guide vane ON/OFF and by-passing valve.
In the present embodiment, analog input core 13 includes the first analog input chip 131 and the second analog input core
Piece 132.First analog input chip 131 is passed with first pressure sensor group 21, second pressure sensor group 44, second temperature
Sensor group 45 and third temperature sensor group 23 connect；Second analog input chip 132 and the 4th temperature sensor group 46 open
Dynamic cabinet 53, by-passing valve 32 and entry guide vane 31 connect.
In the present embodiment, the first analog input chip 131 and the second analog input chip 132 are all made of Siemens
SM1231AI8 chip.First analog input chip receives the pressure signal of oil strainer, the pressure signal of evaporator, condensation
The pressure signal of device, the pressure signal in fuel tank, oil feed line pressure signal, freeze the temperature signal of inlet/outlet pipe and cold
But the temperature signal of water inlet pipe；Second analog input chip receives the temperature of the temperature signal of cooling water outlet mouth, fuel tank internal
Signal, the temperature signal of oil feed line, the current signal of main motor, the guide vane opening signal of entry guide vane feedback and by-passing valve are anti-
The by-passing valve opening amount signal of feedback.
A kind of specific implementation of the system for centrifugal refrigerating machines of the utility model, may relate to utility software,
But used software is the most common software of those skilled in the art, also, not patent application claims to be protected
The range of shield.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that；It still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement；And these are modified or replaceed, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses, should all cover within the scope of the claims and the description of the invention.
Claims (10)
1. a kind of system for centrifugal refrigerating machines, which is characterized in that including PLC control cabinet, Central Control Room, oil pump cabinet, pressure
Contracting machine, refrigeration machine, main motor and with the matched starting cabinet of main motor, wherein
The PLC control cabinet includes CPU control chip, output switch parameter chip, analog input chip, and the CPU controls core
Piece and Central Control Room communication connection；
The oil pump cabinet includes first pressure sensor group, oil pump and fuel tank and third temperature sensor group, the fuel pump outlet
Equipped with electrothermal relay, oil heater is equipped in the fuel tank；
The compressor includes entry guide vane and by-passing valve, and the entry guide vane is equipped with Electric Actuator；
The refrigeration machine includes no water protector, cooling water pump, chilled water pump, second pressure sensor group, second temperature sensing
Device group and the 4th temperature sensor group；
The main motor includes the first temperature sensor group and cooling fan；
CPU control chip and the oil pump, electrothermal relay, oil heater, cooling fan, no water protector, starting cabinet, the
One temperature sensor group, chilled water pump are connected with cooling water pump；
The output switch parameter chip is connected with the Electric Actuator, by-passing valve；
The analog input chip and the first pressure sensor group, second pressure sensor group, second temperature sensor
Group, third temperature sensor group, the 4th temperature sensor group, starting cabinet, by-passing valve and entry guide vane connection.
2. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the analog quantity is defeated
Entering core includes the first analog input chip and the second analog input chip.
3. a kind of system for centrifugal refrigerating machines according to claim 2, which is characterized in that first simulation
Amount input chip and the first pressure sensor group, second pressure sensor group, second temperature sensor group and third temperature
The connection of sensor group；The second analog input chip is led with the four temperature sensors group, starting cabinet, by-passing valve and import
Leaf connection.
4. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that first temperature
Sensor group includes the temperature sensor that main motor A phase winding is arranged in, the temperature sensor of main motor B phase winding, main motor C
Temperature sensor, the temperature sensor on main motor fore bearing and the temperature sensor in main motor rear bearing of phase winding.
5. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the second temperature
Sensor group includes the temperature sensor that chilled water pipe import/export is arranged in and the temperature sensor of cooling water pipe import.
6. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the third temperature
Sensor group includes the temperature sensor on the temperature sensor and oil supply pipe being arranged in fuel tank.
7. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the 4th temperature
Sensor group includes the temperature sensor that cooling water pipe outlet is arranged in.
8. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the first pressure
Sensor group includes the pressure sensor that fuel tank internal is arranged in, the pressure sensor in oil strainer and is arranged in fuel feed pump
The pressure sensor of road.
9. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the second pressure
Sensor group includes the pressure sensor being arranged on an evaporator and the pressure sensor being arranged on condenser.
10. a kind of system for centrifugal refrigerating machines according to claim 1, which is characterized in that the PLC control
Cabinet further includes emergency stop push button and touch screen, and the CPU control chip is connect with the emergency stop push button and touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920043346.8U CN209371553U (en) | 2019-01-10 | 2019-01-10 | A kind of system for centrifugal refrigerating machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920043346.8U CN209371553U (en) | 2019-01-10 | 2019-01-10 | A kind of system for centrifugal refrigerating machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209371553U true CN209371553U (en) | 2019-09-10 |
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ID=67825280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920043346.8U Active CN209371553U (en) | 2019-01-10 | 2019-01-10 | A kind of system for centrifugal refrigerating machines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209371553U (en) |
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2019
- 2019-01-10 CN CN201920043346.8U patent/CN209371553U/en active Active
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