CN203784997U - Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant - Google Patents
Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant Download PDFInfo
- Publication number
- CN203784997U CN203784997U CN201420155039.6U CN201420155039U CN203784997U CN 203784997 U CN203784997 U CN 203784997U CN 201420155039 U CN201420155039 U CN 201420155039U CN 203784997 U CN203784997 U CN 203784997U
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- China
- Prior art keywords
- baffle plate
- blower fan
- striker
- fan baffle
- connecting lever
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Abstract
The utility model discloses a device for monitoring opening and closing states of a baffle plate at an outlet of a primary air blower fan in a power plant. The device comprises a blower fan baffle plate closing firing pin, a closing travel switch with a movable connecting lever, a blower fan baffle plate opening firing pin, an opening travel switch with a movable connecting lever, and an air pressure sensor. The technical effects of the device are that through additional adoption of a baffle plate opening state monitoring device linked with a blower fan baffle plate and also an air pressure sensor at an air outlet of a blower fan, more judging bases are provided for a host computer to determine opening and closing states of a baffle plate, a whole generating set is prevented from malfunctioning directly due to errors of a single judging basis source, and then functioning risks of the generating set are effectively reduced.
Description
Technical field
The utility model relates to a kind of power plant primary air fan outlet damper open and-shut mode monitoring device.
Background technology
Primary air fan has material impact as thermal power plant Important Auxiliary equipment equipment to the safe and stable operation of whole unit.A unit is furnished with two primary air fans, and its Main Function is to provide a wind that carries coal dust to pulverized coal preparation system, from blower fan, is out divided into two-way, and a road is called heat primary air after air preheater, and a road is without the cold wind of crying of air preheater.Wherein, heat primary air is exerted oneself for coal pulverizer provides drying capacity and ventilation, carries coal dust and enter into boiler-burner after the coal dust of coal pulverizer milled is dried.A cold wind mixes in the porch of coal pulverizer with heat primary air, plays the effect that regulates coal pulverizer entry/exit mouth temperature, and the part of ventilating and exerting oneself as coal pulverizer, simultaneously also as seal fan wind regime.Therefore guarantee that the stable operation of primary air fan is significant.
The exit of primary air fan is provided with baffle plate, primary air fan is adjusted primary air flow size and blast by controllable register aperture, to adapt to boiler load, change, when blower fan baffle plate is closed completely, host computer will stop fan operation, referring to Fig. 1, and be the striker being connected with baffle plate and the travel switch being connected with striker for host computer provides the device of flapper closure state, during flapper closure, can drive striker to move and trigger simultaneously travel switch and send a signal to host computer, host computer can stop fan operation after receiving the complete shutdown signal of baffle plate.
But in actual motion, because striker self may occur that displacement problem not in place causes triggering or the situation of false triggering travel switch, also just easily cause host computer to receive wrong damper status signal, and host computer will stop the operation of primary air fan when receiving flapper closure signal, so whole generating set also can be thereupon out of service, if because wrong flapper closure signal causes generating set out of service, this will cause more serious production problem.
Summary of the invention
The technical problem that is prone to signal error in order to solve the primary air fan outlet damper open and-shut mode monitoring of generation current factory, the utility model provides a kind of primary air fan outlet damper status signal power plant primary air fan outlet damper open and-shut mode monitoring device accurately of guaranteeing.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is, a kind of power plant primary air fan outlet damper open and-shut mode monitoring device, comprise the closed striker of blower fan baffle plate and the closing stroke switch that is provided with movable connecting lever, the closed striker of described blower fan baffle plate is mechanically attached to blower fan baffle plate and promotes striker when blower fan baffle plate is closed and moves, the movable connecting lever of described closing stroke switch contacts the closed striker of blower fan baffle plate and drives movable connecting lever to move to trigger closing stroke switch when the closed striker of blower fan baffle plate moves, closing stroke switch is electrically connected to host computer, also comprise blower fan baffle plate unlatching striker and the opening travel switch that is provided with movable connecting lever, described blower fan baffle plate unlatching striker is mechanically attached to blower fan baffle plate and when blower fan baffle plate is opened, promotes blower fan baffle plate unlatching striker and moves, the movable connecting lever contact blower fan baffle plate of described opening travel switch is opened striker and when blower fan baffle plate unlatching striker moves, is driven movable connecting lever and triggering opening travel switch, described opening travel switch is electrically connected to host computer.
Described a kind of power plant primary air fan outlet damper open and-shut mode monitoring device, also comprises wind pressure sensor, and described wind pressure sensor is arranged at primary air fan exit, and the output of wind pressure sensor is electrically connected to host computer.
Technique effect of the present utility model is, by adding baffle plate opening monitoring device and the primary air fan air outlet wind pressure sensor linking with blower fan baffle plate, can guarantee that host computer has more distinguishing rule when judgement baffle plate open and-shut mode, avoided occurring when mistake appears in single distinguishing rule source directly causing whole generating set to move the problem of makeing mistakes, effectively reduced the operation risk of generating set.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing primary air fan outlet damper open and-shut mode monitoring device;
Fig. 2 is structural representation of the present utility model.
Wherein 1 is that the closed striker of blower fan baffle plate, 2 is that movable connecting lever, 3 is closing stroke switch.
The specific embodiment
Referring to Fig. 2, the utility model comprises the closed striker of blower fan baffle plate and is provided with the closing stroke switch of movable connecting lever, the closed striker of blower fan baffle plate is mechanically attached to blower fan baffle plate and promotes striker when blower fan baffle plate is closed and moves, the movable connecting lever of closing stroke switch contacts the closed striker of blower fan baffle plate and drives movable connecting lever to move to trigger closing stroke switch when the closed striker of blower fan baffle plate moves, closing stroke switch is electrically connected to host computer, also comprise blower fan baffle plate unlatching striker and the opening travel switch that is provided with movable connecting lever, it is identical with the closed striker structure of blower fan baffle plate that blower fan baffle plate is opened striker, opening travel switch is identical with closing stroke construction of switch, blower fan baffle plate unlatching striker is mechanically attached to blower fan baffle plate and when blower fan baffle plate is opened, promotes blower fan baffle plate unlatching striker and moves, the movable connecting lever contact blower fan baffle plate of opening travel switch is opened striker and when blower fan baffle plate unlatching striker moves, is driven movable connecting lever and triggering opening travel switch, opening travel switch is electrically connected to host computer.Also comprise wind pressure sensor, wind pressure sensor is arranged at primary air fan exit, and the output of wind pressure sensor is electrically connected to host computer.
When operation, closing stroke switch, opening travel switch and wind pressure sensor all send coherent signal in real time to host computer, host computer otherwise designed decision logic, generally can advise being designed to closing stroke switch and opening travel switch all provides the signal that reflects identical damper status, and wind pressure sensor detects primary air fan outlet blast lower than normal value, when namely baffle plate has blocked fan outlet really, then be judged as baffle plate and closed and stopped blower fan work.As there is conflicting damper status signal, and only send warning signal, remind related personnel to examine inspection damper status, to guarantee the normal operation of generating set.
Claims (2)
1. a power plant primary air fan outlet damper open and-shut mode monitoring device, comprise the closed striker of blower fan baffle plate and the closing stroke switch that is provided with movable connecting lever, the closed striker of described blower fan baffle plate is mechanically attached to blower fan baffle plate and promotes striker when blower fan baffle plate is closed and moves, the movable connecting lever of described closing stroke switch contacts the closed striker of blower fan baffle plate and drives movable connecting lever to move to trigger closing stroke switch when the closed striker of blower fan baffle plate moves, closing stroke switch is electrically connected to host computer, it is characterized in that, also comprise blower fan baffle plate unlatching striker and the opening travel switch that is provided with movable connecting lever, described blower fan baffle plate unlatching striker is mechanically attached to blower fan baffle plate and when blower fan baffle plate is opened, promotes blower fan baffle plate unlatching striker and moves, the movable connecting lever contact blower fan baffle plate of described opening travel switch is opened striker and when blower fan baffle plate unlatching striker moves, is driven movable connecting lever and triggering opening travel switch, described opening travel switch is electrically connected to host computer.
2. a kind of power plant according to claim 1 primary air fan outlet damper open and-shut mode monitoring device, it is characterized in that, also comprise wind pressure sensor, described wind pressure sensor is arranged at primary air fan exit, and the output of wind pressure sensor is electrically connected to host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420155039.6U CN203784997U (en) | 2014-04-01 | 2014-04-01 | Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420155039.6U CN203784997U (en) | 2014-04-01 | 2014-04-01 | Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784997U true CN203784997U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420155039.6U Expired - Fee Related CN203784997U (en) | 2014-04-01 | 2014-04-01 | Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322686A (en) * | 2016-09-26 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Anti-vibration anti-loosening ventilating system and ventilating method |
| CN111287914A (en) * | 2020-03-24 | 2020-06-16 | 大唐贵州发耳发电有限公司 | Fan monitoring device and method |
-
2014
- 2014-04-01 CN CN201420155039.6U patent/CN203784997U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322686A (en) * | 2016-09-26 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Anti-vibration anti-loosening ventilating system and ventilating method |
| CN111287914A (en) * | 2020-03-24 | 2020-06-16 | 大唐贵州发耳发电有限公司 | Fan monitoring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |