CN203098352U - Boiler primary air fan speed control system - Google Patents
Boiler primary air fan speed control system Download PDFInfo
- Publication number
- CN203098352U CN203098352U CN 201320116179 CN201320116179U CN203098352U CN 203098352 U CN203098352 U CN 203098352U CN 201320116179 CN201320116179 CN 201320116179 CN 201320116179 U CN201320116179 U CN 201320116179U CN 203098352 U CN203098352 U CN 203098352U
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- boiler
- air fan
- control system
- air
- speed
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Abstract
The utility model relates to the technical field of boiler air fans, in particular to a boiler primary air fan speed control system. The boiler primary air fan speed control system structurally comprises an air fan, a boiler and a speed regulation control system, an air outlet of the air fan is communicated with an air inlet of the boiler, and the air fan is connected with the speed regulation control system. A frequency conversion speed regulation control device comprises a frequency converter and a bypass device, and the bypass device is used for switching a direct connection method between a motor and electric supply or the method that the motor and the electric supply are connected through the frequency converter. According to the boiler primary air fan speed control system, the air outlet quantity of the air fan is effectively controlled through control of the frequency converter over the rotation speed of the air fan, and the adjustable range of the air fan is enlarged; the air outlet quantity of the air fan can be controlled according to actual needs for the air quantity corresponding to boiler load, and therefore electric energy can be fully used to avoid energy waste; and meanwhile, the bypass device is additionally arranged for switching the direct connection method between the motor and electrify supply or the method that the motor and the electrify supply are connected through the frequency converter, therefore the motor can be switched into power frequency operation of the electricity supply timely when the frequency converter breaks down, and normal operation of the boiler can not be affected.
Description
Technical field
The utility model relates to the boiler fan technical field, particularly a kind of boiler primary air fan control speed system.
Background technique
The primary air fan of boiler mainly provides the boiling air quantity and the required oxygen of burning of boiler operatiopn, can regulate the load of boiler by the air quantity of regulating primary air fan.
In the prior art, the control of primary air fan air quantity mainly is the air quantity of regulating blower fan by the folding degree that adjusts the air door baffle plate that the air port goes out, yet only utilize the air door baffle plate to regulate, the adjustable extent of air quantity is little, and no matter boiler needs great air quantity, the power of motor can not change the needs of air quantity to some extent because of boiler, because the power of motor is constant, in the time of the air quantity slump in demand of boiler, cause waste of electric energy, and when the air quantity of boiler need increase, cause blower fan not satisfy the demands.
The model utility content
The purpose of this utility model is to avoid above-mentioned deficiency of the prior art and provides a kind of fan delivery adjustable extent big, and can make full use of electric energy and do not cause the boiler primary air fan control speed system of energy waste.
The purpose of this utility model is achieved through the following technical solutions:
A kind of boiler primary air fan control speed system is provided, comprise blower fan, boiler and speed-adjusting and control system, the exhaust outlet of described blower fan is communicated in the intake grill of described boiler, described blower fan is connected with described speed-adjusting and control system, described frequency changing regulating speed control apparatus comprises frequency variator, and the shunting device that is used for directly being connected between switch motor and the civil power or connects by frequency variator.
Wherein, the wind inlet of described blower fan is provided with inlet air door baffle plate, and the exhaust outlet of described blower fan is provided with outlet air door baffle plate, and described inlet air door baffle plate all is connected with described speed-adjusting and control system with described outlet air door baffle plate.
Wherein, the wind inlet of described blower fan is provided with the inlet baffle swivel mount, and described inlet air door baffle plate rotatably is connected in described inlet baffle swivel mount.
Wherein, the exhaust outlet of described blower fan is provided with the outlet damper swivel mount, and described outlet air door baffle plate rotatably is connected in described outlet damper swivel mount.
Wherein, described frequency variator is the AC-DC-AC voltage frequency converter.
The beneficial effects of the utility model: boiler primary air fan control speed system comprises blower fan, boiler and speed-adjusting and control system, the exhaust outlet of described blower fan is communicated in the intake grill of described boiler, described blower fan is connected with described speed-adjusting and control system, described frequency changing regulating speed control apparatus comprises frequency variator, and the shunting device that is used for directly being connected between switch motor and the civil power or connects by frequency variator.By the control of frequency variator to rotation speed of fan, thereby control the air output of blower fan effectively, enlarged the adjustable extent of fan delivery, can be according to the actual demand of the corresponding air quantity of boiler load is controlled, can utilize electric energy fully and do not cause the waste of the energy, simultaneously, shunting device is used for directly being connected or connecting by frequency variator between switch motor and the civil power, when the frequency conversion fault, can in time motor be switched to the power frequency operation of civil power, not influence the normal operation of boiler.
Description of drawings
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in the accompanying drawing does not constitute any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the following drawings.
Fig. 1 is the structural representation of boiler primary air fan control speed system of the present utility model.
In Fig. 1, include:
1-blower fan, 2-speed-adjusting and control system, 31-inlet air door baffle plate, 32-outlet air door baffle plate.
Embodiment
With the following Examples the utility model is further described.
One of embodiment of boiler primary air fan control speed system of the present utility model, as shown in Figure 1, comprise blower fan 1, boiler and speed-adjusting and control system 2, the exhaust outlet of described blower fan 1 is communicated in the intake grill of described boiler, described blower fan 1 is connected with described speed-adjusting and control system 2, described frequency changing regulating speed control apparatus comprises frequency variator, and the shunting device that is used for directly being connected between switch motor and the civil power or connects by frequency variator.
By the control of frequency variator to blower fan 1 rotating speed, thereby control the air output of blower fan 1 effectively, enlarged the adjustable extent of blower fan 1 air quantity, can be according to the actual demand of the corresponding air quantity of boiler load is controlled, can utilize electric energy fully and do not cause the waste of the energy, simultaneously, shunting device is used for directly being connected or connecting by frequency variator between switch motor and the civil power, when the frequency conversion fault, can in time motor be switched to the power frequency operation of civil power, not influence the normal operation of boiler.
The wind inlet of described blower fan 1 is provided with inlet air door baffle plate 31, the exhaust outlet of described blower fan 1 is provided with outlet air door baffle plate 32, described inlet air door baffle plate 31 all is connected with described speed-adjusting and control system 2 with described outlet air door baffle plate 32, the wind inlet of described blower fan 1 is provided with the inlet baffle swivel mount, described inlet air door baffle plate 31 rotatably is connected in the inlet baffle swivel mount, the exhaust outlet of described blower fan 1 is provided with the outlet damper swivel mount, described outlet air door baffle plate 32 rotatably is connected in the outlet damper swivel mount, when the constant and changing load of boiler of blower fan 1 rotating speed, can control air quantity by the folding of inlet air door baffle plate 31 or outlet air door baffle plate 32, particularly working as frequency variator breaks down, motor can cause the significantly variation of air quantity when being switched to the power frequency of civil power by shunting device, enter the mouth this moment air door baffle plate 31 and outlet air door baffle plate 32 can guarantee the air quantity of motor to the boiler (not shown) effectively.
Wherein, described frequency variator is the AC-DC-AC voltage frequency converter.
Should be noted that at last; above embodiment is only in order to the explanation the technical solution of the utility model; but not to the restriction of the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.
Claims (5)
1. boiler primary air fan control speed system, comprise blower fan, boiler and speed-adjusting and control system, the exhaust outlet of described blower fan is communicated in the intake grill of described boiler, described blower fan is connected with described speed-adjusting and control system, it is characterized in that: described frequency changing regulating speed control apparatus comprises frequency variator, and the shunting device that is used for directly being connected between switch motor and the civil power or connects by frequency variator.
2. boiler primary air fan control speed system according to claim 1, it is characterized in that: the wind inlet of described blower fan is provided with inlet air door baffle plate, the exhaust outlet of described blower fan is provided with outlet air door baffle plate, and described inlet air door baffle plate all is connected with described speed-adjusting and control system with described outlet air door baffle plate.
3. boiler primary air fan control speed system according to claim 2, it is characterized in that: the wind inlet of described blower fan is provided with the inlet baffle swivel mount, and described inlet air door baffle plate rotatably is connected in described inlet baffle swivel mount.
4. boiler primary air fan control speed system according to claim 2, it is characterized in that: the exhaust outlet of described blower fan is provided with the outlet damper swivel mount, and described outlet air door baffle plate rotatably is connected in described outlet damper swivel mount.
5. boiler primary air fan control speed system according to claim 1 is characterized in that: described frequency variator is the AC-DC-AC voltage frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116179 CN203098352U (en) | 2013-03-14 | 2013-03-14 | Boiler primary air fan speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116179 CN203098352U (en) | 2013-03-14 | 2013-03-14 | Boiler primary air fan speed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098352U true CN203098352U (en) | 2013-07-31 |
Family
ID=48849760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320116179 Expired - Lifetime CN203098352U (en) | 2013-03-14 | 2013-03-14 | Boiler primary air fan speed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098352U (en) |
-
2013
- 2013-03-14 CN CN 201320116179 patent/CN203098352U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |