CN216356346U - Air cooling device for generator outlet bin - Google Patents
Air cooling device for generator outlet bin Download PDFInfo
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- CN216356346U CN216356346U CN202122543427.4U CN202122543427U CN216356346U CN 216356346 U CN216356346 U CN 216356346U CN 202122543427 U CN202122543427 U CN 202122543427U CN 216356346 U CN216356346 U CN 216356346U
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- air
- outlet bin
- generator
- generator outlet
- centrifugal fan
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Abstract
The utility model discloses an air cooling device of a generator outlet bin. It is including the generator storehouse of being qualified for the next round of competitions that has air intake and air outlet and at least one can provide the centrifugal fan of cooling air for generator storehouse of being qualified for the next round of competitions, the height that generator storehouse of being qualified for the next round of competitions is higher than centrifugal fan and be provided with the air inlet takeover on the air intake in generator storehouse of being qualified for the next round of competitions, centrifugal fan passes through the supply air duct and connects on the air inlet takeover in generator storehouse of being qualified for the next round of competitions, utilize supply air duct to blow in the inside of generator storehouse of being qualified for the next round of competitions with cooling air through centrifugal fan and cool off each part in generator storehouse of being qualified for the next round of competitions, and can discharge the hydrogen that leaks in generator storehouse operation along with it simultaneously. After adopting foretell structure, can realize each conductor temperature in the cooling generator outlet wire storehouse and the purpose of the hot-air in the motor outlet wire storehouse of leaving, still reach the effect of outlet wire storehouse row hydrogen simultaneously, moreover, made things convenient for installation, operation and maintenance.
Description
Technical Field
The utility model relates to an auxiliary device for a large-current phase-isolated enclosed bus generator outlet bin, in particular to a generator outlet bin cooling device, and belongs to the field of large-scale power generation system equipment.
Background
Along with the development of economy and technology, the capacity of generator units in China is larger and larger, at present, the capacity of large-scale thermal power plants, nuclear power plants and hydropower stations reaches more than 1000MW, the transmission current from a generator to a main transformer reaches more than 30000A, the heat productivity of conductors at the outlet of the generator is increased greatly, the temperature in the outlet bin of the generator is increased along with the increase of the temperature, and natural cooling cannot meet the operation working condition of a site, so that the service life of electrical equipment and connecting conductors in the outlet bin is easily influenced due to overhigh operation temperature of the outlet bin, the problem of potential safety hazard also occurs, the long-term stable operation of the generator set is influenced, in addition, the outlet bin of the generator is generally higher than the ground of an operation layer, the outlet bin is complex in structure and smaller in surrounding space, so that a cooling fan is difficult to be directly installed, even if the cooling fan is directly installed on the outlet bin of the generator, the space is narrow and small, and inconvenience is brought to equipment maintenance.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a generator outlet bin cooling device which is convenient to install and maintain, can effectively solve the problem of overhigh operating temperature of an outlet bin of a generator, ensures long-term stable operation of the generator set and prolongs the service life of electrical equipment and connecting conductors in the outlet bin.
In order to solve the technical problem, the generator outlet bin cooling device comprises a generator outlet bin with an air inlet and an air outlet and at least one centrifugal fan capable of providing cooling air for the generator outlet bin, wherein the height of the generator outlet bin is higher than that of the centrifugal fan, an air inlet connecting pipe is arranged on the air inlet of the generator outlet bin, the centrifugal fan is connected to the air inlet connecting pipe of the generator outlet bin through an air supply pipeline, cooling air is blown into the generator outlet bin through the centrifugal fan through the air supply pipeline to cool all parts of the generator outlet bin, and meanwhile, hydrogen leaked during operation of the generator outlet bin can be discharged along with the cooling air.
And a transition hose is connected between the air supply pipeline and the air inlet connecting pipe.
The centrifugal fan is provided with two, two centrifugal fan can selectively open and provide the cooling air for generator outlet bin.
And a filter screen is arranged at the air inlet of the centrifugal fan.
And the generator outlet bin is provided with three air inlets and three air outlets corresponding to the three air inlets.
An electric control cabinet is arranged beside the centrifugal fan.
After the structure is adopted, because at least one centrifugal fan is directly arranged on the ground, the outside cooling air is sent into the high-position generator outlet bin from the ground by using the air supply pipeline, thereby realizing the purpose of cooling the temperature of each conductor in the generator outlet bin and sending out the hot air in the motor outlet bin, simultaneously discharging a small amount of hydrogen leaked in the running of the generator along with the conductor, and further achieving the effect of discharging the hydrogen from the outlet bin, moreover, the centrifugal fan is directly arranged on the ground, has the advantages of reliable structure, simple manufacture, convenient transportation, convenient installation, convenient operation, convenient maintenance and the like, particularly can realize the installation of two sets of centrifugal fans which can switch the work in a ground installation mode, also improves the reliability of long-term running, and simultaneously installs a filter screen at the air inlet of the centrifugal fan to filter impurities in the air, the cleanliness of the air in the wire outlet bin is ensured.
Drawings
FIG. 1 is a schematic diagram of a generator outlet bin cooling device according to the present invention;
FIG. 2 is a schematic structural diagram of a generator outlet bin cooling device according to the present invention;
FIG. 3 is a schematic view of a connection structure of two sets of centrifugal fans and an air supply pipeline in the present invention;
FIG. 4 is an electrical system diagram of the generator outlet bin cooling device of the present invention;
FIG. 5 is a control schematic diagram of a centrifugal fan A according to the present invention;
fig. 6 is a control schematic diagram of the centrifugal fan B of the present invention.
Detailed Description
The generator outlet bin cooling device of the utility model is further described in detail with reference to the accompanying drawings and the detailed description.
The first embodiment is as follows:
as shown in the figure, the generator outlet bin cooling device of the embodiment is mainly used for cooling equipment in a generator outlet bin of a large power generation system, and comprises a generator outlet bin 3 which is installed in a power plant and has a certain height from the ground of an operation layer and two centrifugal fans 4 which are directly installed on the ground, so that a height difference is formed between the centrifugal fans 4 and the generator outlet bin 3, an electrical control cabinet 8 is arranged beside the centrifugal fans 4, an electrical control system is arranged in the electrical control cabinet 8 and is connected with the two centrifugal fans, the generator outlet bin 3 is provided with three air inlets 1 and three air outlets 2, air inlet connecting pipes 5 are arranged on the three air inlets of the generator outlet bin 3, transition hoses 6 are connected onto the air inlet connecting pipes 5, the transition hoses 6 can be detachable hoses made of insulating materials, the centrifugal fans 4 are connected onto an air inlet end of an air supply pipeline 7 through a Y-shaped collecting pipeline, the air outlet end of the air supply pipeline 7 is connected to the transition hose 6, cooling air is provided for the generator outlet bin by selectively opening one of the centrifugal fans 4, the outside cooling air is sent into the generator outlet bin positioned at a high position from the ground by utilizing the air supply pipeline to drive air circulation, the air convection strength is enhanced, the temperature of each component (conductor) in the generator outlet bin is cooled, hot air in the generator outlet bin is discharged, meanwhile, a small amount of hydrogen leaked in the running process of the generator and contained in the internal air of the generator outlet bin can be discharged along with the hot air, and the effect of discharging hydrogen from the outlet bin is further achieved.
Further, centrifugal fan 4's air inlet department is provided with filter screen 9, impurity in the filtered air, guarantee to send into the cleanliness factor of the interior air of outlet bin, the both sides of filter screen are provided with pressure differential (monitoring) switch 10 of connecting in the electrical control system equally, possess pressure differential alarm function, in order to judge that the filter screen blocks up and change, when the filter screen blocks up and needs to be changed, pressure differential switch reports to the police, from this through setting up two centrifugal fan that can the interconversion, each other is reserve, only 1 fan work under the normal condition, and can be manual, regularly or the trouble switches to reserve fan, long-term operation's reliability has been improved, in addition, can also be provided with the wind speed flow switch of connecting in the electrical control system equally on the supply air duct.
Still further, as for the electric control system, as shown in fig. 4 to 6, it includes a load switch, a micro breaker, an ac contactor, a thermal relay, a power supply monitor, an intermediate relay, a time relay, a control button, an operation indication lamp, etc.; the operation of the centrifugal fan adopts a one-use one-standby mode, one centrifugal fan (fan A) is normally selected to operate, and manual operation, timing operation or fault (no wind, overload, short circuit and the like) can be switched to another centrifugal fan (fan B) to operate; the control system adopts a relay mode and has no programmable equipment so as to improve the operation reliability, and the control principle is as follows:
the method comprises a normal operation mode and a fault operation mode. In the normal operation mode, after the operating fan is selected to press the start button (-S13A/B), the operating fan operates correspondingly, the timing is started correspondingly by the operating time relay (-K12A/B), when the timing time is up, the operating centrifugal fan is stopped, the other centrifugal fan is started to operate and time, the operation of the original centrifugal fan is switched back after the timing time is up, and the circulation is carried out in the above mode until the operating centrifugal fan is pressed down correspondingly to the stop button (-S12A/B). The monitoring of the operation fault of the centrifugal fan comprises the following steps: monitoring a fan power supply through a power supply monitor K31/K32, and when the power supply voltage is abnormal (overvoltage or undervoltage), the power supply monitor acts; secondly, the running condition of the centrifugal fan is monitored through a thermal relay TH01A/B, and when the conditions of locked rotor, overcurrent and the like occur, the thermal relay acts; thirdly, monitoring the power supply current through a breaker Q01A/B, and tripping the breaker when the system is in overcurrent; and fourthly, monitoring the wind speed of the fan through a wind speed flow switch F01A/B, and when the wind speed is abnormal, actuating the wind speed flow switch. When any one of the faults occurs, the intermediate relay K11A/B is enabled to act, and then the standby fan is automatically started through the control circuit, the fan which is running is stopped, and the standby fan is started to run all the time until the device is restarted after the fault is removed.
Example two:
the generator outlet bin cooling device of the embodiment has the same structure as that of the first embodiment, and is different in that only one set of centrifugal fan is arranged on the ground and is directly connected to the transition hose 6 through an air supply pipeline.
Claims (6)
1. The utility model provides a generator outlet bin forced air cooling device which characterized in that: the cooling device comprises a generator outlet bin (3) with an air inlet (1) and an air outlet (2) and at least one centrifugal fan (4) capable of providing cooling air for the generator outlet bin, wherein the height of the generator outlet bin (3) is higher than that of the centrifugal fan (4), an air inlet connecting pipe (5) is arranged on the air inlet of the generator outlet bin (3), the centrifugal fan (4) is connected to the air inlet connecting pipe (5) of the generator outlet bin through an air supply pipeline (7), cooling air is blown into the interior of the generator outlet bin through the air supply pipeline by the centrifugal fan (4) to cool all parts of the generator outlet bin, and meanwhile, hydrogen leaked in the running process of the generator outlet bin (3) can be discharged along with the cooling air.
2. The generator outlet bin air cooling device of claim 1, wherein: and a transition hose (6) is connected between the air supply pipeline (7) and the air inlet connecting pipe (5).
3. The generator outlet bin air cooling device of claim 1 or 2, wherein: centrifugal fan (4) are provided with two, two centrifugal fan can selectively open and provide the cooling air for generator outlet bin.
4. The generator outlet bin air cooling device of claim 3, wherein: and a filter screen (9) is arranged at the air inlet of the centrifugal fan (4).
5. The generator outlet bin air cooling device of claim 1, 2 or 4, wherein: the generator outlet bin (3) is provided with three air inlets and three air outlets corresponding to the three air inlets.
6. The generator outlet bin air cooling device of claim 5, wherein: an electric control cabinet (8) is arranged beside the centrifugal fan (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122543427.4U CN216356346U (en) | 2021-10-21 | 2021-10-21 | Air cooling device for generator outlet bin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122543427.4U CN216356346U (en) | 2021-10-21 | 2021-10-21 | Air cooling device for generator outlet bin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216356346U true CN216356346U (en) | 2022-04-19 |
Family
ID=81178784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122543427.4U Active CN216356346U (en) | 2021-10-21 | 2021-10-21 | Air cooling device for generator outlet bin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216356346U (en) |
-
2021
- 2021-10-21 CN CN202122543427.4U patent/CN216356346U/en active Active
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