CN209896862U - Power plant boiler air supply motor cooling system - Google Patents
Power plant boiler air supply motor cooling system Download PDFInfo
- Publication number
- CN209896862U CN209896862U CN201921113467.1U CN201921113467U CN209896862U CN 209896862 U CN209896862 U CN 209896862U CN 201921113467 U CN201921113467 U CN 201921113467U CN 209896862 U CN209896862 U CN 209896862U
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- air supply
- motor
- air
- cooling system
- duct
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Abstract
The utility model provides a power plant boiler air supply motor cooling system, including the air supply motor, the motor cooler, the air supply wind channel, air supply wind channel one end is for going into the wind gap, and the other end is connected with power plant boiler air preheater, installs the impeller in the air supply wind channel, is provided with the motor cooler connector on the air supply wind channel, and the motor cooler connector is located the income wind side of impeller, impeller connection in air supply motor shaft and the air supply wind channel, the motor cooler, which comprises a housin, fin group, the casing is provided with into the wind gap, the air outlet, the motor cooler connector of casing suit on air supply motor outside casing air outlet and air supply wind channel passes through the pipe connection. The system can reduce mechanical loss of the air supply motor, improve the motor efficiency, and simultaneously has the advantages of energy conservation, environmental protection and high social and economic benefits.
Description
Technical Field
The utility model belongs to the power equipment field especially relates to a power plant boiler air supply motor cooling system.
Background
The wind feeding machine used by the utility boiler mainly provides air for boiler combustion, and improves the thermal efficiency and combustion stability of the boiler. The stability of air supply motor is very important to power plant boiler, and air supply motor can produce the heat when moving, if can not in time eliminate the heat will make air supply motor burn out, and air supply motor's heat dissipation now mainly leans on motor rear portion fan to dispel the heat, and fan and electric motor rotor are on the same axle, and the fan also rotates thereupon when the motor moves, blows away the motor heat. Because the fan is arranged on the rotor, the loss of the motor is increased, the power consumption of the motor is increased, the fan can generate a large amount of noise, the requirements of energy conservation and environmental protection are not met, the equipment load is increased, and the motor can be directly damaged once the fan breaks down.
Disclosure of Invention
An object of the utility model is to provide a power plant boiler air supply motor cooling system, this system can reduce air supply motor mechanical loss, improves motor efficiency, and is energy-concerving and environment-protective simultaneously, and social economic benefits is high.
In order to achieve the above purpose, the technical scheme of the utility model is that: a cooling system for a power station boiler air supply motor comprises an air supply motor, a motor cooler and an air supply duct,
one end of the air supply duct is an air inlet, the other end of the air supply duct is connected with the air preheater of the power station boiler, an impeller is arranged in the air supply duct, a motor cooler connecting port is arranged on the air supply duct and is positioned at the air inlet side of the impeller,
the air supply motor is arranged outside the air supply duct, the shaft of the air supply motor is connected with the impeller in the air supply duct and is used for driving the impeller to rotate,
the motor cooler comprises a shell and a radiating fin group, wherein the shell is provided with an air inlet and an air outlet, the shell is sleeved outside the air supply motor, the radiating fin group is installed on the air supply motor, and the air outlet of the shell is connected with a motor cooler connector on the air supply air channel through a pipeline.
And a filter screen is arranged at the air inlet of the air supply duct.
And a filter screen is arranged at the air inlet of the shell.
The air duct is arranged inside the shell, one end of the air duct is an air inlet of the shell, the other end of the air duct is an air outlet of the shell, the air supply motor is located in the channel, and the air duct is used for improving cooling efficiency.
The utility model discloses the system, with the motor cooler connector on motor cooler air outlet and the air supply wind channel pass through the flexible coupling wind channel and be connected, when the air supply motor operation, utilize the negative pressure in the air supply wind channel, produce the negative pressure in motor cooler entrance, make in the natural air flows into the motor cooler to cool off the air supply motor, adopt the utility model discloses after the system, need not to set up cooling fan, reduce motor shaft's power loss, improved motor efficiency, do not set up the reduction site noise that cooling fan can be obvious simultaneously, more environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, a cooling system for a supply air motor of a utility boiler comprises a supply air motor 1, a motor cooler and a supply air duct 3,
one end of the air supply duct 3 is an air inlet, the air inlet is provided with a filter screen 31, the other end is connected with an air preheater of the power station boiler, an impeller 11 is arranged in the air supply duct 3, the air supply duct 3 is provided with a motor cooler connecting port 32, the motor cooler connecting port 32 is positioned at the air inlet side of the impeller 11,
an air supply motor 1 which is arranged outside the air supply duct 3, the shaft of the air supply motor is connected with an impeller 11 in the air supply duct and is used for driving the impeller to rotate,
the motor cooler comprises a shell 21 and a radiating fin group 22, wherein the shell 21 is provided with an air inlet 23 and an air outlet 24, the shell 21 is sleeved outside an air supply motor 1, an air channel is arranged inside the shell, one end of the air channel is the shell air inlet 23, the other end of the air channel is a shell air outlet 24, the air supply motor 1 is located in a channel, the air channel is used for improving cooling efficiency, the radiating fin group 22 is installed on the air supply motor 1, and the shell air outlet 24 is connected with a motor cooler connecting port 32 on the air supply air channel through a pipeline.
The utility model discloses a cooling system and current forced air cooling system contrast:
the existing air supply motor: when the load is 304.66-599.97 MW, the adjusting working range of the movable blades is 35.064% -58.1527%; the current of the air supply motor runs at 51.8555-75.997A; outlet pressure 1.0384-2.2445 Kpa;
the utility model discloses cooling system's air supply motor: when the load is 267.67-599.63 MW, the adjusting working range of the movable blades is 37.6831% -64.0065%; the current of the air supply motor runs at 51.5625-80.8594A; outlet pressure 1.3689-2.3685 Kpa;
analyzing the adjusting working range of the movable blade: present cooling system with the utility model discloses cooling system is under the same aperture of movable vane, if:
43.5806% of the current cooling system operating current 57.1289 — the cooling system operating current 55.957=1.1719a of the present invention
46.7581% of the current cooling system operating current 60.2991 — the cooling system operating current 57.4219=2.8772a of the present invention
49.8803% of the current cooling system operating current 62.5462 — the cooling system operating current 61.7432 of the present invention =0.803A
51.5970% of the current running current of the cooling system is 65.625-the running current of the cooling system of the utility model 62.6953=2.9297A
58.6151% existing cooling system operating current 75.997 — the cooling system operating current 70.3125= 5.6845A.
Therefore, the energy-saving effect of the motor is different under different opening degrees of the movable blades by calculating the same standard of the opening degrees of the movable blades, namely the operation current 5.6845A of the motor of the blower can be reduced to 52.2kW when the opening degree of the movable blades is 58.6151%, and the operation current 0.803A of the motor of the blower can be reduced to 7.4KW when the opening degree of the movable blades is 49.8803%.
Use the utility model discloses cooling system back, 64824KWH can be economized to a forced draught blower motor the least year.
The utility model discloses cooling system is under the condition of same load, and is compared with current cooling system data analysis, and factor such as the height of forced draught blower motor running current and forced draught blower total amount of wind, operating pressure, entry air temperature are relevant, the utility model discloses cooling system, motor running temperature rise all at 35 ℃, have almost no influence to motor running temperature. And the plant power consumption rate is reduced under the condition of ensuring the normal operation of the air quantity, the motor and the fan.
Claims (4)
1. The utility model provides a power plant boiler air supply motor cooling system which characterized in that: comprises an air supply motor, a motor cooler and an air supply duct,
one end of the air supply duct is an air inlet, the other end of the air supply duct is connected with the air preheater of the power station boiler, an impeller is arranged in the air supply duct, a motor cooler connecting port is arranged on the air supply duct and is positioned at the air inlet side of the impeller,
the air supply motor is arranged outside the air supply duct, the shaft of the air supply motor is connected with the impeller in the air supply duct and is used for driving the impeller to rotate,
the motor cooler comprises a shell and a radiating fin group, wherein the shell is provided with an air inlet and an air outlet, the shell is sleeved outside the air supply motor, the radiating fin group is installed on the air supply motor, and the air outlet of the shell is connected with a motor cooler connector on the air supply air channel through a pipeline.
2. A utility boiler supply air motor cooling system as claimed in claim 1, characterized in that: and a filter screen is arranged at the air inlet of the air supply duct.
3. A utility boiler supply air motor cooling system as claimed in claim 1, characterized in that: and a filter screen is arranged at the air inlet of the shell.
4. A utility boiler supply air motor cooling system as claimed in claim 1, characterized in that: the air duct is arranged inside the shell, one end of the air duct is an air inlet of the shell, the other end of the air duct is an air outlet of the shell, the air supply motor is located in the channel, and the air duct is used for improving cooling efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113467.1U CN209896862U (en) | 2019-07-16 | 2019-07-16 | Power plant boiler air supply motor cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113467.1U CN209896862U (en) | 2019-07-16 | 2019-07-16 | Power plant boiler air supply motor cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209896862U true CN209896862U (en) | 2020-01-03 |
Family
ID=69021852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921113467.1U Expired - Fee Related CN209896862U (en) | 2019-07-16 | 2019-07-16 | Power plant boiler air supply motor cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209896862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510919A (en) * | 2020-11-23 | 2021-03-16 | 华能国际电力股份有限公司井冈山电厂 | Cooling device of fan type load motor of thermal power plant |
-
2019
- 2019-07-16 CN CN201921113467.1U patent/CN209896862U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510919A (en) * | 2020-11-23 | 2021-03-16 | 华能国际电力股份有限公司井冈山电厂 | Cooling device of fan type load motor of thermal power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 Termination date: 20200716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |