CN203432454U - Air leakage control system of air pre-heater - Google Patents

Air leakage control system of air pre-heater Download PDF

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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.)
Active
Application number
CN201320475299.7U
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Chinese (zh)
Inventor
赵雷
刘刚
陶永刚
赵春霞
王奎
梁帅华
肖江
张晶
刘云
张江东
金微
王子鸣
杜恩同
何琰
孙嘉伟
王国华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DATANG HUANGDAO POWER GENERATION Co Ltd
Original Assignee
DATANG HUANGDAO POWER GENERATION Co Ltd
Priority date (The priority date 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 date listed.)
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Priority to CN201320475299.7U priority Critical patent/CN203432454U/en
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Publication of CN203432454U publication Critical patent/CN203432454U/en
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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

A kind of air preheater air leak control system
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.
CN201320475299.7U 2013-08-06 2013-08-06 Air leakage control system of air pre-heater Active CN203432454U (en)

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 Active 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)

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