CN217063207U - Air cooling system for isolated-phase enclosed bus - Google Patents
Air cooling system for isolated-phase enclosed bus Download PDFInfo
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- CN217063207U CN217063207U CN202122779802.5U CN202122779802U CN217063207U CN 217063207 U CN217063207 U CN 217063207U CN 202122779802 U CN202122779802 U CN 202122779802U CN 217063207 U CN217063207 U CN 217063207U
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Abstract
The utility model belongs to the technical field of the nuclear power station electrical design, concretely relates to an air cooling system for leaving looks enclosed bus, reasonable in design, first air-cooled module and 100% complete redundancy of second air-cooled module, conductor refrigerated is efficient, has that degree of automation is high, the cost is lower, simple structure, reliability are high, easy maintenance's characteristics. The cooling device is suitable for cooling various isolated phase enclosed buses and meets the use requirements.
Description
Technical Field
The application belongs to the technical field of electrical design of nuclear power stations, and particularly relates to an air cooling system for an isolated phase enclosed bus.
Background
The isolated-phase enclosed bus is widely applied to power transmission between the outgoing line of a generator of a thermal power unit, a hydroelectric unit or a nuclear power unit with the power of more than 600MW and a main transformer, and has the characteristics of large current-carrying capacity, small occupied area and high reliability. When the rated current of the isolated phase enclosed bus is less than 25kA, an air self-cooling mode can be adopted; when the rated current of the isolated phase enclosed bus is more than 25kA, a forced ventilation cooling mode is adopted for effective heat dissipation. Meanwhile, the selection of the cooling mode also depends on the arrangement and the structural size of the enclosed bus in the power station, and compared with the self-cooling phase-isolated enclosed bus, the air-cooled enclosed bus can greatly reduce the overall size of the enclosed bus and save precious land resources.
The traditional air cooling system for the isolated-phase enclosed bus is complex in structure, low in reliability and high in failure rate, so that the research on a novel air cooling system for the isolated-phase enclosed bus has important significance in simplifying system design, improving equipment reliability and reducing equipment failure rate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air cooling system for leaving looks enclosed bus solves traditional leaving looks enclosed bus air cooling system, and the problem that the structure is complicated, the reliability is low, the fault rate is high.
The technical scheme for realizing the purpose of the application is as follows:
the application provides an air cooling system for closing generating line from looks includes: the device comprises a cold source module, a micro-positive pressure module and at least two groups of air cooling modules; the air-cooled module includes: the system comprises a motor, a fan, an anemometer and a controller;
the motor is connected with the fan and used for driving the fan to rotate; the fan is connected with the isolated phase closed bus through an air pipe and is used for driving the air in the air pipe to flow to the isolated phase closed bus to generate circulating air;
the anemoscope is used for detecting the wind speed in the wind pipe and sending the wind speed to the controller; the controller is connected with the anemoscope and the motor and is used for controlling the motor to be turned on or turned off according to the wind speed sent by the anemoscope;
the cold source module is connected with the at least two groups of air cooling modules and is used for taking away heat of circulating air in the at least two groups of air cooling modules;
the micro-positive pressure module is used for inputting compressed air into the air pipe, so that the air pressure in the air pipe is larger than the air pressure outside the air pipe.
Alternatively to this, the first and second parts may,
and air in the air pipe flows to the phase A and the phase C of the isolated phase enclosed bus through the anemoscope, flows to the cold source module through the phase B of the isolated phase enclosed bus, and returns to the fan through the cold source module.
Optionally, the air cooling module further includes: a fan outlet check valve; the at least two sets of air-cooled modules include: the air cooling system comprises a first air cooling module and a second air cooling module;
the first air-cooled module includes: the system comprises a first motor, a first fan, a first anemoscope, a first controller and a first fan outlet check valve; the second air-cooled module includes: the second motor, the second fan, the second anemoscope, the second controller and the second fan outlet check valve;
the output end of the cold source module is connected with the input end of the first fan and the input end of the second fan;
the first controller is connected with the first fan through the first motor, the output end of the first fan is connected with the input end of the first anemoscope, the output end of the first anemoscope is connected with the input end of the first fan outlet check valve, the output end of the first fan outlet check valve and the output end of the second fan outlet check valve are connected to the same pipeline and then connected into a three-way valve, and the two output ends of the three-way valve are respectively connected with the phase A and the phase C of the isolated phase closed bus;
the second controller is connected with the second fan through the second motor, the output end of the second fan is connected with the input end of the second anemoscope, and the output end of the second anemoscope is connected with the input end of the second fan outlet check valve.
Optionally, the cold source module includes: the cold source cooling system comprises a cooling water source, a first heat exchanger, a second heat exchanger, a first cold source check valve, a second cold source check valve, a first electric water valve and a second electric water valve;
the water outlet of the cooling water source is connected with the input end of the first heat exchanger and the input end of the second heat exchanger through the first electric water valve and the second electric water valve respectively;
the output end of the first heat exchanger is connected with the water inlet of the cooling water source through the first cold source check valve, and the output end of the second heat exchanger is connected with the water inlet of the cooling water source through the second cold source check valve;
the first controller is further connected with the first electric water valve, and the second controller is further connected with the second electric water valve.
Optionally, the air cooling module further includes: an alarm;
the controller is also used for controlling the alarm to give an alarm when the fan fails.
Optionally, the first air-cooling module includes: a first alarm; the second air-cooled module includes: a second alarm;
the controller is specifically configured to control the second fan to be turned on and control the second alarm to alarm when the first fan is turned on and the second fan is turned off and if the wind speed fed back by the first anemoscope is zero; after the first fan and the second fan are both started, if the wind speed fed back by the first anemoscope and the wind speed fed back by the second anemoscope are both zero, the first alarm is controlled to alarm.
Optionally, the micro positive pressure module includes: the compressed air source, the compressed air check valve and the pressure reducing valve;
the output end of the compressed air source is connected with the air pipe through the compressed air check valve and the pressure reducing valve.
In the alternative,
the compressed air source is a compressed air production system for instruments.
The beneficial technical effect of this application lies in:
(1) the utility model provides a forced air cooling system for closing generating line leaves phase, reasonable in design's first forced air cooling module and second forced air cooling module 100% complete redundancy (any is listed as promptly and all can provide 100% cooling amount of wind), conductor cooling is efficient, has that degree of automation is high, the cost is lower, simple structure, reliability is high, easy maintenance's characteristics. The cooling device is suitable for cooling various isolated phase enclosed buses and meets the use requirements.
(2) The air cooling system for the isolated-phase enclosed bus has the advantages of high automation degree due to the fact that the controller is arranged; because the alarm is arranged, the automatic alarm has the advantage of automatic alarm; because have the pressure-fired module, can prevent the inside and outside air free circulation replacement of generating line, avoid inside dust, impurity, charged particle, water smoke etc. in the outside air will invade the generating line, to the generating line inside cause pollute or reduce the generating line insulation level, have the benefit of reduction fault rate.
Drawings
Fig. 1 is a schematic structural diagram of an air cooling system for an isolated phase enclosed bus according to an embodiment of the present disclosure.
In the figure: 100-cold source module; 101-a cooling water source, 102-a first heat exchanger, 103-a second heat exchanger, 104-a first cold source check valve, 105-a second cold source check valve, 106-a first electric water valve and 107-a second electric water valve;
200-micro positive pressure module; 201-compressed air source, 202-compressed air check valve, 203-pressure reducing valve;
300-air cooling module; 301-a first air-cooling module, 302-a second air-cooling module; 3011-a first motor, 3012-a first fan, 3013-a first anemometer, 3014-a first controller, 3015-a first fan outlet check valve, 3016-a first alarm; 3021-a second motor, 3022-a second fan, 3023-a second anemometer, 3024-a second controller, 3025-a second fan outlet check valve, and 3026-a second alarm;
400-isolated phase enclosed bus; 500-a generator; 600-transformer.
Detailed Description
In order to make the technical solutions in the embodiments of the present application more clearly understood and fully described below by those skilled in the art, the technical solutions in the embodiments of the present application will be described with reference to the drawings in the embodiments of the present application. It should be apparent that the embodiments described below are only some of the embodiments of the present application, and not all of them. All other embodiments that can be derived by a person skilled in the art from the embodiments described herein without inventive step are within the scope of the present application.
Referring to fig. 1, the drawing is a schematic structural diagram of an air cooling system for an isolated phase enclosed bus according to an embodiment of the present disclosure.
The air cooling system for isolated phase enclosed bus that this application embodiment provided includes: the system comprises a cold source module 100, a micro-positive pressure module 200 and at least two groups of air cooling modules 300; air-cooled module 300, comprising: the system comprises a motor, a fan, an anemometer and a controller;
the motor is connected with the fan and used for driving the fan to rotate; the fan is connected with the isolated phase enclosed bus 400 through an air pipe and is used for driving the air in the air pipe to flow to the isolated phase enclosed bus 400 to generate circulating air;
the anemoscope is used for detecting the wind speed in the wind pipe and sending the wind speed to the controller; the controller is connected with the anemoscope and the motor and is used for controlling the motor to be turned on or turned off according to the wind speed sent by the anemoscope;
the cold source module 100 is connected with the at least two groups of air cooling modules 300 and is used for taking away heat of circulating air in the at least two groups of air cooling modules 300;
the micro-positive pressure module 200 is used for inputting compressed air into the air duct so as to enable the air pressure in the air duct to be larger than the air pressure outside the air duct.
It can be understood that the air cooling module 300 is configured to drive a fan by a motor, and is responsible for forcing air to flow circularly, measuring a wind speed, and determining whether to start the motor and start the cold source module 100 according to the wind speed. The heat sink module 100 takes heat of the circulating wind away. A measurement and control subsystem. The micro-positive pressure module 200 is responsible for continuously inputting compressed air with a certain pressure into the air pipe, keeping the air pressure in the air cooling system slightly higher than the outside, and preventing water vapor in the outside air from entering the air cooling system and influencing the insulating property of the isolated phase enclosed bus 400. The air pipe is responsible for connecting each module, makes it form an organic whole.
In some possible implementations of the embodiment of the present application, the micro positive pressure module 200 includes: a compressed air source 201, a compressed air check valve 202 and a pressure reducing valve 203;
the output end of the compressed air source 201 is connected with an air pipe through a compressed air check valve 202 and a pressure reducing valve 203.
As an example, the compressed air source 201 is a compressed air production system for a meter.
In some possible implementation manners of the present application, air in the air duct flows to the phase a and the phase C of the isolated phase enclosed bus through the anemometer, flows to the cold source module through the phase B of the isolated phase enclosed bus, and returns to the fan through the cold source module.
In a specific example, with continued reference to fig. 1, the air cooling module may further include: a fan outlet check valve; at least two sets of air-cooled modules, including: a first air-cooling module 301 and a second air-cooling module 302;
a first air-cooling module 301, comprising: a first motor 3011, a first fan 3012, a first anemometer 3013, a first controller 3014, and a first fan outlet check valve 3015; a second air cooling module 302 comprising: a second motor 3021, a second fan 3022, a second anemometer 3023, a second controller 3024, and a second fan outlet check valve 3025;
the output end of the cold source module 100 is connected to the input end of the first fan 3012 and the input end of the second fan 3022;
the first controller 3014 is connected to the first fan 3012 through the first motor 3011, the output end of the first fan 3012 is connected to the input end of the first anemoscope 3012, the output end of the first anemoscope 3012 is connected to the input end of the first fan outlet check valve 3015, the output end of the first fan outlet check valve 3015 and the output end of the second fan outlet check valve 3025 are connected to the same pipeline and then connected to the three-way valve, and the two output ends of the three-way valve are connected to the phase a and the phase C of the isolated phase closed bus 400 respectively;
the second controller 3024 is coupled to the second fan 3022 via a second motor 3021, the output of the second fan 3022 is coupled to the input of a second anemometer 3023, and the output of the second anemometer 3023 is coupled to the input of a second fan outlet check valve 3025.
In the embodiment of the present application, the first air-cooling module 301 and the second air-cooling module 302 are completely redundant by 100% (any one column can provide 100% of cooling air volume), and the conductor cooling efficiency is high, and the first air-cooling module and the second air-cooling module have the characteristics of high automation degree, low cost, simple structure, high reliability and convenience in maintenance. The cooling device is suitable for cooling various isolated phase enclosed buses and meets the use requirements.
In some possible implementations of the embodiment of the present application, the heat sink module 100 may include: the cold source water supply system comprises a cooling water source 101, a first heat exchanger 102, a second heat exchanger 103, a first cold source check valve 104, a second cold source check valve 105, a first electric water valve 106 and a second electric water valve 107;
a water outlet of the cooling water source 101 is connected with the input end of the first heat exchanger 102 and the input end of the second heat exchanger 103 through a first electric water valve 106 and a second electric water valve 107 respectively;
the output end of the first heat exchanger 102 is connected with the water inlet of the cooling water source 101 through a first cold source check valve 104, and the output end of the second heat exchanger 103 is connected with the water inlet of the cooling water source 101 through a second cold source check valve 105;
the first controller 3014 is also connected to the first electrically operated water valve 106, and the second controller 3024 is also connected to the second electrically operated water valve 107 (not shown in fig. 1).
In some possible implementations of the embodiment of the present application, the air cooling module 300 may further include: an alarm;
and the controller is also used for controlling the alarm to give an alarm when the fan fails.
As an example, referring to fig. 1, the first air-cooling module 301 includes: a first alarm 3016; a second air cooling module 302 comprising: a second alarm 3026;
the controller is specifically configured to, when the first fan 3012 is turned on and the second fan 3022 is turned off, control the second fan 3022 to be turned on and control the second alarm 3026 to give an alarm if the wind speed fed back by the first anemoscope 3013 is zero; after the first fan 3012 and the second fan 3022 are both started, if the wind speed fed back by the first anemoscope 3013 and the wind speed fed back by the second anemoscope 3023 are both zero, the first alarm 3016 is controlled to alarm.
The following describes a specific operation logic of the air cooling system for the phase-isolated enclosed bus according to the embodiment of the present application in detail with reference to a specific example.
1) In an initial state, except the micro-positive pressure module 200, all fans, motors and valves are in a closed state, and the system is kept static;
2) the controllers of the first air cooling module 301 and the second air cooling module 302 are powered on and start to work;
3) the first air-cooling module 301 is preferentially activated (the second air-cooling module 302 may also be preferentially activated), and the first and second controllers 3014 and 3024 detect the states of the first and second anemometers 3013 and 3023, respectively;
4) if the signals given by the first anemometer 3013 and the second anemometer 3023 are detected to be that the wind speed is 0, the first controller 3014 sends a signal to start the first fan 3012 and start the first electrically operated water valve 106;
5) after being pressurized by a fan, air in the air pipe flows through the first anemoscope 3013 and the first fan outlet check valve 3015, flows to A, C phases of the isolated phase enclosed bus 400 and flows back to the phase B, in the process, the three-phase conductor of the isolated phase enclosed bus 400 is cooled, flows through the cold source module 100 to complete heat exchange, and finally returns to the first fan 3012 to complete one cycle;
5) after 5 seconds, the first and second controllers 3014 and 3024 detect the states of the first and second anemometers 3013 and 3023, respectively;
6) if the signals given by the first anemometer 3013 and the second anemometer 3023 are detected to be that the wind speeds are both 0, it is indicated that the first air-cooling module 301 has a fault, the second controller 3024 starts the second fan 3022, starts the second electric water valve 107, and simultaneously starts the second alarm 3026 to alarm;
7) after 5 seconds, the first controller 3014 and the second controller 3024 detect the states of the first anemometer 3013 and the second anemometer 3023, respectively, and if it is detected that at least one of the first anemometer 3013 and the second anemometer 3023 is not 0, the current state is kept unchanged; if the signals given by the first anemometer 3013 and the second anemometer 3023 are detected to be that the wind speed is 0, it is determined that the first air-cooling module 301 and the second air-cooling module 302 have a fault at the same time, and the first alarm 3016 is started to alarm.
The air cooling system for the isolated-phase enclosed bus has the advantages of high automation degree due to the fact that the controller is arranged; the alarm has the advantage of automatic alarm; because have the pressure-fired module, can prevent that the inside and outside air of generating line from freely circulating the replacement, avoid dust, impurity, charged particle, water smoke etc. in the outside air will invade the generating line inside, to the generating line inside cause the pollution or reduce the generating line insulation level, have the benefit of reduction fault rate.
The present application has been described in detail with reference to the drawings and examples, but the present application is not limited to the examples, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. The prior art can be used for all the matters not described in detail in this application.
Claims (7)
1. An air-cooling system for an isolated phase enclosed bus, the system comprising: the device comprises a cold source module, a micro-positive pressure module and at least two groups of air cooling modules; the air-cooled module includes: the system comprises a motor, a fan, an anemometer and a controller;
the motor is connected with the fan and used for driving the fan to rotate; the fan is connected with the isolated phase closed bus through an air pipe and is used for driving the air in the air pipe to flow to the isolated phase closed bus to generate circulating air;
the anemoscope is used for detecting the wind speed in the wind pipe and sending the wind speed to the controller; the controller is connected with the anemoscope and the motor and used for controlling the motor to be turned on or turned off according to the wind speed sent by the anemoscope;
the cold source module is connected with the at least two groups of air cooling modules and is used for taking away heat of circulating air in the at least two groups of air cooling modules;
the micro-positive pressure module is used for inputting compressed air into the air pipe so that the air pressure in the air pipe is larger than the air pressure outside the air pipe.
2. The air cooling system for the isolated phase enclosed bus bar according to claim 1,
and air in the air pipe flows to the phase A and the phase C of the isolated phase enclosed bus through the anemoscope, flows to the cold source module through the phase B of the isolated phase enclosed bus, and returns to the fan through the cold source module.
3. The air cooling system for an isolated phase enclosed bus according to claim 2, wherein said air cooling module further comprises: a fan outlet check valve; the at least two sets of air-cooled modules include: the air cooling system comprises a first air cooling module and a second air cooling module;
the first air-cooled module includes: the system comprises a first motor, a first fan, a first anemoscope, a first controller and a first fan outlet check valve; the second air-cooled module includes: the second motor, the second fan, the second anemoscope, the second controller and the second fan outlet check valve;
the output end of the cold source module is connected with the input end of the first fan and the input end of the second fan;
the first controller is connected with the first fan through the first motor, the output end of the first fan is connected with the input end of the first anemoscope, the output end of the first anemoscope is connected with the input end of the first fan outlet check valve, the output end of the first fan outlet check valve and the output end of the second fan outlet check valve are connected to the same pipeline and then connected into a three-way valve, and the two output ends of the three-way valve are respectively connected with the phase A and the phase C of the isolated phase closed bus;
the second controller is connected with the second fan through the second motor, the output end of the second fan is connected with the input end of the second anemoscope, and the output end of the second anemoscope is connected with the input end of the second fan outlet check valve.
4. The air cooling system for the isolated phase enclosed bus of claim 3, wherein the heat sink module comprises: the cold source cooling system comprises a cooling water source, a first heat exchanger, a second heat exchanger, a first cold source check valve, a second cold source check valve, a first electric water valve and a second electric water valve;
the water outlet of the cooling water source is connected with the input end of the first heat exchanger and the input end of the second heat exchanger through the first electric water valve and the second electric water valve respectively;
the output end of the first heat exchanger is connected with the water inlet of the cooling water source through the first cold source check valve, and the output end of the second heat exchanger is connected with the water inlet of the cooling water source through the second cold source check valve;
the first controller is further connected with the first electric water valve, and the second controller is further connected with the second electric water valve.
5. The air-cooling system for an isolated phase enclosed busbar according to claim 3, wherein said air-cooling module further comprises: an alarm;
the controller is also used for controlling the alarm to give an alarm when the fan fails.
6. The air cooling system for an isolated phase enclosed bus according to claim 1, wherein said micro positive pressure module comprises: the compressed air source, the compressed air check valve and the pressure reducing valve;
the output end of the compressed air source is connected with the air pipe through the compressed air check valve and the pressure reducing valve.
7. An air-cooling system for an isolated phase enclosed busbar according to claim 6,
the compressed air source is a compressed air production system for instruments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122779802.5U CN217063207U (en) | 2021-11-12 | 2021-11-12 | Air cooling system for isolated-phase enclosed bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122779802.5U CN217063207U (en) | 2021-11-12 | 2021-11-12 | Air cooling system for isolated-phase enclosed bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217063207U true CN217063207U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122779802.5U Active CN217063207U (en) | 2021-11-12 | 2021-11-12 | Air cooling system for isolated-phase enclosed bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217063207U (en) |
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2021
- 2021-11-12 CN CN202122779802.5U patent/CN217063207U/en active Active
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