CN203432454U - Air leakage control system of air pre-heater - Google Patents
Air leakage control system of air pre-heater Download PDFInfo
- Publication number
- CN203432454U CN203432454U CN201320475299.7U CN201320475299U CN203432454U CN 203432454 U CN203432454 U CN 203432454U CN 201320475299 U CN201320475299 U CN 201320475299U CN 203432454 U CN203432454 U CN 203432454U
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- CN
- China
- Prior art keywords
- parallel connection
- air
- heater
- control system
- contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The utility model specifically discloses an air leakage control system of an air pre-heater. The air leakage control system comprises a driving motor; the driving motor is provided with two forward contactors; the two forward contactors are in series connection and then are connected with a main circuit of the driving motor; for the two contactors, main contacts are in parallel connection, normally closed contacts are in parallel connection, normally opening contacts are in series connection, one end of each of the main contacts in parallel connection is connected with a backward contactor, and the other end of each of the main contacts in parallel connection is connected with a power supply end; the two ends of the normally closed contacts in parallel connection are connected with the power supply end; the two ends of the normally opening contacts in parallel connection are connected with the power supply end. According to the air leakage control system of the air pre-heater, which is disclosed by the utility model, the reliability of an automation device of a sector plate of the air pre-heater is improved; the operation safety of the automation device of the sector plate of the air pre-heater is ensured; the overhaul and the maintenance are convenient.
Description
Technical field
The utility model is specifically related to a kind of air preheater air leak control system.
Technical background
The main control circuit of the drive motors of air-heater leakage system as shown in Figure 1, auxiliary control circuit as shown in Figure 2, wherein controlled by contactor KM58 by motor forward, and motor reversal is controlled by contactor KM61, the contact malfunction once go wrong like this, the accident that will cause.
Utility model content
The shortcoming existing in order to solve prior art, the utility model specifically discloses a kind of air preheater air leak control system.
The technical solution adopted in the utility model is as follows:
, comprising a drive motors, the positive contactor of described drive motors comprises two, after its series connection, is connected in the major loop of drive motors; The main contact parallel of two described contactors, normally-closed contact parallel connection, normally opened contact series connection, and the one termination reversion contactor of the main contacts after parallel connection, another termination feeder ear; Normally-closed contact after described parallel connection, two termination feeder ears; Normally opened contact two termination feeder ears after described series connection.
The beneficial effects of the utility model are:
Improve the reliability of air preheater fanning strip automatics.Guarantee the security of air preheater fanning strip automatics action.Facilitate repair and maintenance.
Accompanying drawing explanation
Fig. 1 is the main control loop of former drive motors;
Fig. 2 is the subsidiary control loop of former drive motors;
Fig. 3 is the main control loop of improved drive motors;
Fig. 4 is the subsidiary control loop of improved drive motors.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated:
In order to improve air-heater leakage security of system, we change drive motors control contactor into two by one, thereby stopped the accident causing because of contact malfunction, be respectively the first contactor KM58, the second contactor KM58A, the main contact parallel of two contactors, normally-closed contact parallel connection, normally opened contact series connection, and the one termination reversion contactor of the main contacts after series connection, another termination feeder ear; Normally-closed contact two termination feeder ears after described parallel connection; Normally opened contact two termination feeder ears after described series connection.
Claims (1)
1. an air preheater air leak control system, comprises a drive motors, it is characterized in that: the positive contactor of described drive motors comprises two, after its series connection, is connected in the major loop of drive motors; The main contact parallel of two described contactors, normally-closed contact parallel connection, normally opened contact series connection, and the one termination reversion contactor of the main contacts after parallel connection, another termination feeder ear; Normally-closed contact two termination feeder ears after described parallel connection; Normally opened contact two termination feeder ears after described series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475299.7U CN203432454U (en) | 2013-08-06 | 2013-08-06 | Air leakage control system of air pre-heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475299.7U CN203432454U (en) | 2013-08-06 | 2013-08-06 | Air leakage control system of air pre-heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203432454U true CN203432454U (en) | 2014-02-12 |
Family
ID=50061487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320475299.7U Expired - Lifetime CN203432454U (en) | 2013-08-06 | 2013-08-06 | Air leakage control system of air pre-heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203432454U (en) |
-
2013
- 2013-08-06 CN CN201320475299.7U patent/CN203432454U/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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |