CN203413670U - Flame detection cooling air device - Google Patents
Flame detection cooling air device Download PDFInfo
- Publication number
- CN203413670U CN203413670U CN201320426070.4U CN201320426070U CN203413670U CN 203413670 U CN203413670 U CN 203413670U CN 201320426070 U CN201320426070 U CN 201320426070U CN 203413670 U CN203413670 U CN 203413670U
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- blower
- fire inspection
- flame detection
- cooling blower
- fire
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Abstract
The utility model relates to electric power industry equipment, in particular to a flame detection cooling air device used for cooling a flame detection probe. The flame detection cooling air device comprises a flame detection probe, a flame detection cooling blower, a flame detection cooling blower mother tube used for connecting the flame detection probe with the flame detection cooling blower, a primary blower and a primary blower mother tube connected with the primary blower, wherein the primary blower mother tube is connected with the flame detection cooling blower mother tube through a pipeline, and multiple purification control elements are arranged on the pipeline. The device further improves the safety of a cooling air system, the primary blower can provide necessary air quantity of flame detection in normal work, and the flame detection probe can be sufficiently cooled in the case of emergent failure of the flame detection cooling blower. The device can shorten the operation time of the flame detection cooling blower, thereby not only reducing the energy consumption and maintenance cost of the power plant, but also ensuring safety and reliability and saving the production cost.
Description
Technical field
The utility model relates to a kind of power industry equipment, particularly a kind of inspection of the fire for cooling flame detecting probe cooling air device.
Background technology
At present, thermal power plant utilizes flame detecting probe to judge whether boiler puts out a fire, fire inspection cooling blower is used to provide cooling air and the clean wind of flame detecting probe when the normal operation as one of important auxiliary equipment of boiler unit unit, flame detecting probe is as " eyes " of normal operation of boiler, it can give expression to the internally fired situation of boiler furnace, to guarantee flame detecting probe energy long-term stable operation.
Conventional heat power plant boiler all arranges two fire inspection cooling blowers, cooling for the flame detecting probe of flame detector.Two Fans one fortune one are standby, do not allow fire inspection cooling blower to stop transport simultaneously, otherwise may burn flame detector, lose the monitoring to burner hearth fire.But, if two fire inspection cooling blowers are shut down or break down simultaneously, will cause boiler MFT (Main Fuel Trip, main burning tripping operation) or other accidents, threaten the safe operation of unit.In addition, fire inspection cooling blower operation noise is large, and contaminated environment, because fire inspection cooling blower is high-speed centrifugal fan, so produce very large noise in running, affects staff's physical and mental health.The blower fan of the fire of most domestic steam power plant inspection at present is all selected imported product, equipment one-time investment and maintenance cost are larger, and it is larger on each boiler, to dispose two fire inspection cooling blower power consumptions, does not meet the energy-saving and emission-reduction of steam power plant and the requirement of economic sustainable development strategy.
Given this, the utility model is proposed.
Utility model content
The utility model provides a kind of inspection of the fire for cooling flame detecting probe cooling air device; this device has not only guaranteed to shut down or the stable operation of flame detecting probe during fault because of two fire inspection cooling blowers simultaneously; and just start fire inspection blower fan in ignition of the boiler; primary air fan is the stable rear inspection blower fan of just can ceasing fire normally; thereby can reduce the running time of fire inspection cooling blower, reduce maintenance cost.
For realizing this utility model object, the utility model adopts following technical scheme:
A kind of fire inspection cooling air device, comprise flame detecting probe, fire inspection cooling blower, for connecting the female pipe of fire inspection cooling blower of flame detecting probe and fire inspection cooling blower, primary air fan, the female pipe of primary air fan being connected with primary air fan, is characterized in that: the female pipe of the female Guan Yuhuo inspection of described primary air fan cooling blower connects by pipeline.
Further, on described pipeline, be provided with filter screen, on described filter screen and the pipeline between primary air fan, be provided with stop valve, on the pipeline between described filter screen and fire inspection cooling blower, be provided with butterfly valve.
Further, on described filter screen and the pipeline between butterfly valve, be provided with pressure monitoring device.
Further, on the pipeline between described butterfly valve and fire inspection cooling blower, be provided with the first check-valves.
Further, described fire inspection cooling blower is one or two.
Further, on the described female pipe of fire inspection cooling blower, be provided with the second check-valves.
Further, described filter screen is stainless steel filtering net.
Further, described filter screen is that order number is 20～800 object filter screens.
Further, described pressure monitoring device is pressure sensor.
Below the utility model is described further:
A kind of fire inspection cooling air device, comprise the flame detecting probe in boiler furnace, fire inspection cooling blower, between flame detecting probe and fire inspection cooling blower, by fire, examine the female pipe of cooling blower and connect, primary air fan, the female pipe of the primary air fan being connected with primary air fan, flame detecting probe in burner hearth is the device of monitoring fire box temperature, generally, when fire box temperature is during lower than 80 ℃, fire inspection cooling blower quits work.This device connects the female pipe of primary air fan mother Guan Yuhuo inspection cooling blower by pipeline, and some purification control elements are set on pipeline, and to realize when fire is examined cooling blower because of disorderly closedown, primary air fan can substitute its work and carry out cooling to flame detecting probe.
The fan design flow of the centrifugal fire inspection cooling blower that Datang Ba Qiao steam power plant is supporting is about 1500m
3/ h, blast is 8.2KPa, and the cold primary air pressure of boiler, more than 10kPa, all higher than the total head of fire inspection blower fan, is all the good wind regime of fire inspection cooling air.This transformation accesses cold primary air fan by the female pipe of wind of boiler to be carried out connecing with the female pipe of fire inspection cooling air, and relevant valve, filter screen and pressure-measuring-point are set, and pressure signal access DCS also revises fire inspection blower fan interlock logic.
On the pipeline connecting at the female pipe of the female Guan Yuhuo inspection of primary air fan cooling blower, be provided with filter screen, on described filter screen and the pipeline between primary air fan, be provided with stop valve, on the pipeline between described filter screen and fire inspection cooling blower, be provided with butterfly valve.Stop valve is hand stop valve, for connecting or block a cold wind of pipeline.Butterfly valve is Hand-operated butterfly valve, for regulating the flow in pipeline inside of a cold wind.
On the pipeline between filter screen and butterfly valve, be provided with pressure monitoring device, pressure monitoring device is for monitoring the blast of a cold wind, and described pressure monitoring device is pressure sensor.
When preventing that cold primary air fan and fire inspection cooling blower from switching, the pressure reduction of pipeline internal cooling wind causes the backflow of high-pressure blast, on the pipeline between butterfly valve and fire inspection cooling blower, be provided with the first check-valves, and be provided with the second check-valves on the female pipe of fire inspection cooling blower.
For guaranteeing the cleannes of a wind, filter screen is set on pipeline with the particulate matter in wind of elimination, to avoid the normal operation of congestion affects unit.When filter screen occurs to stop up, the cleaning door that can arrange by filter screen side cleans filter screen, and described filter screen is that order number is 20～800 object stainless steel filtering nets, preferably 100～400 orders.
In this device, fire inspection cooling blower can arrange one, also can be set up in parallel two fire inspection cooling blowers and manage and be connected with the mother of fire inspection cooling blower, when a fire inspection cooling blower is set, fire inspection cooling blower and primary air fan switch and use mutually as the case may be.When fire inspection cooling blower breaks down while shutting down, primary air fan starts and uses as flame detecting probe provides cooling air, and when primary air fan fault or a wind blast are when not enough, fire inspection cooling blower starts to use provides cooling air for flame detecting probe.
When unit normally moves, a wind of preferential employing provides cooling wind regime, and in unit starting, stoppage in transit process, primary air pressure deficiency or primary air fan full cut-off adopt cooling blower that wind regime is provided.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Main element explanation:
1-primary air fan, 2-flame detecting probe, the 3-the first fire inspection cooling blower, the 4-the second fire inspection cooling blower, 5-filter screen, 6-butterfly valve, 7-pressure monitoring device, 8-stop valve, 9-the first check-valves, 10-pipeline, 11-the second check-valves.
The specific embodiment
Below in conjunction with embodiment, the utility model is described in more detail.
As shown in Figure 1, a kind of fire inspection cooling air device, comprises the flame detecting probe 2 in boiler furnace, fire inspection cooling blower, between flame detecting probe 2 and fire inspection cooling blower, by fire, examine the female pipe of cooling blower and connect, primary air fan 1, the female pipe of the primary air fan being connected with primary air fan 1.The female pipe of the female Guan Yuhuo inspection of primary air fan cooling blower is connected by pipeline 10, and on pipeline 10, purification control element is set.On the pipeline 10 connecting at the female pipe of the female Guan Yuhuo inspection of primary air fan cooling blower, be provided with filter screen 5, on described filter screen 5 and the pipeline 10 between primary air fan 1, be provided with stop valve 8, on pipeline 10 between described filter screen 5 and fire inspection cooling blower, be provided with butterfly valve 6, described filter screen 5 is that order number is 20～800 object stainless steel filtering nets, in order to the particulate matter in wind of elimination, to avoid the normal operation of congestion affects unit, stop valve 8 is hand stop valves, for connecting or block a cold wind of pipeline, butterfly valve 6 is Hand-operated butterfly valves, for regulating the flow in pipeline inside of a cold wind.On the pipeline between filter screen 5 and butterfly valve 6, be provided with pressure monitoring device 7, this pressure monitoring device 7 is pressure sensor, for for monitoring the blast of a cold wind.When preventing that cold primary air fan 1 and fire inspection cooling blower from switching, the pressure reduction of pipeline internal cooling wind causes the backflow of high-pressure blast, on the pipeline 10 between butterfly valve 6 and fire inspection cooling blower, be provided with the first check-valves 9, and be provided with the second check-valves 11 on the female pipe of fire inspection cooling blower.Described fire inspection cooling blower is one also two arranged side by side, and when using two fire inspection cooling blowers, two the using and the reserved, when wherein one while breaking down, restart other one.
When unit normally moves, adopt a wind to examine cooling wind regime as fire, close fire inspection cooling blower, the second check-valves 11, open stop valve 8, the first check-valves 9, starts 1, wind of primary air fan and enters in pipeline 10 along the female pipe of primary air fan, through the particulate matter in wind of filter screen 5 elimination, by butterfly valve 6, regulate the flow of a wind, one time wind enters in flame detecting probe 2 along pipeline 10, makes flame detecting probe cooling.
When primary air pressure deficiency or primary air fan 1 also do not have steady operation, adopt fire inspection cooling air as wind regime.Close the first check-valves 9, open the second check-valves 11, start fire inspection cooling blower.When a fire inspection cooling blower is set in device, start fire inspection cooling blower, cooling air enters flame detecting probe 2 along the female pipe of inspection cooling blower that catches fire, and lowers the temperature of flame detecting probe, guarantees the normal operation of flame detecting probe.When two the first fire inspection cooling blowers 3 in parallel and the second fire inspection cooling blower 4 are set in device; two the using and the reserved; when wherein a fiery inspection cooling blower operation troubles is shut down, other one starts use, and its using method is identical with the method for a fire inspection cooling blower of use.After primary air fan 1 working stability, then fire is examined to cooling blower and close, utilize primary air fan 1 to provide cooling air for flame detecting probe 2 coolings.
The security of improved device cooling air wind system is further enhanced, when system is normally moved, primary air fan 1 can be enough to provide fire inspection Air Quantity Required, when fire inspection cooling blower catastrophic failure, flame detecting probe also can obtain enough cooling, the boiler MFT(Main Fuel Trip that can avoid fire inspection cooling blower to stop transport and cause, main burning tripping operation).In addition, staff only need to do fire inspection according to regular working task and have bad luck test, recovers fire inspection cooling blower stand-by state after pass the test, can reduce the running time of fire inspection blower fan, reduces maintenance cost.The average running current of operation of separate unit fire inspection blower fan is 5.6A, and calculating operation power consumption is 3.2kw; And fire inspection actual consumption air quantity is 600m
3/ h, on primary air fan power consumption almost without impact.If within 7000 hours, calculated according to unit actual motion, after transformation, can save station service 2.24 ten thousand kilowatt hours, 4 boilers can be saved station service 90,000 kilowatt hours every year.
Embodiment in above-described embodiment can further combine or replace; and embodiment is described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the prerequisite of the utility model design philosophy; the various changes and modifications that in this area, professional and technical personnel makes the technical solution of the utility model, all belong to protection domain of the present utility model.
Claims (9)
1. a fire is examined cooling air device, comprise flame detecting probe (2), fire inspection cooling blower, be used for connecting the female pipe of fire inspection cooling blower of flame detecting probe (2) and fire inspection cooling blower, primary air fan (1), the female pipe of primary air fan being connected with primary air fan (1), is characterized in that: the female pipe of the female Guan Yuhuo inspection of described primary air fan cooling blower connects by pipeline (10).
2. a kind of fire according to claim 1 is examined cooling air device, it is characterized in that: on described pipeline (10), be provided with filter screen (5), on pipeline (10) between described filter screen (5) and primary air fan (1), be provided with stop valve (8), on the pipeline (10) between described filter screen (5) and fire inspection cooling blower, be provided with butterfly valve (6).
3. a kind of fire inspection cooling air device according to claim 2, is characterized in that: on the pipeline (10) between described filter screen (5) and butterfly valve (6), be provided with pressure monitoring device (7).
4. a kind of fire inspection cooling air device according to claim 2, is characterized in that: on the pipeline (10) between described butterfly valve (6) and fire inspection cooling blower, be provided with the first check-valves (9).
5. according to a kind of fire inspection cooling air device described in claim 1,2 or 4, it is characterized in that: described fire inspection cooling blower is one or two.
6. a kind of fire inspection cooling air device according to claim 1, is characterized in that: on the described female pipe of fire inspection cooling blower, be provided with the second check-valves (11).
7. according to a kind of fire inspection cooling air device described in claim 2 or 3, it is characterized in that: described filter screen (5) is stainless steel filtering net.
8. a kind of fire inspection cooling air device according to claim 7, is characterized in that: described filter screen (5) for order number be 20～800 object filter screens.
9. a kind of fire inspection cooling air device according to claim 3, is characterized in that: described pressure monitoring device (7) is pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320426070.4U CN203413670U (en) | 2013-07-17 | 2013-07-17 | Flame detection cooling air device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320426070.4U CN203413670U (en) | 2013-07-17 | 2013-07-17 | Flame detection cooling air device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413670U true CN203413670U (en) | 2014-01-29 |
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ID=49976558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320426070.4U Expired - Fee Related CN203413670U (en) | 2013-07-17 | 2013-07-17 | Flame detection cooling air device |
Country Status (1)
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| CN (1) | CN203413670U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895420A (en) * | 2017-04-10 | 2017-06-27 | 杨峥雄 | One kind circulation regenerative combustion furnace（RTO）Stewing stove method and apparatus |
| CN107917437A (en) * | 2016-10-09 | 2018-04-17 | 上海漕泾热电有限责任公司 | The cooling device of flame-detecting probe |
| CN112503552A (en) * | 2020-11-06 | 2021-03-16 | 北方魏家峁煤电有限责任公司 | Fire detection sensor ash removal system, method and computer readable medium |
-
2013
- 2013-07-17 CN CN201320426070.4U patent/CN203413670U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917437A (en) * | 2016-10-09 | 2018-04-17 | 上海漕泾热电有限责任公司 | The cooling device of flame-detecting probe |
| CN107917437B (en) * | 2016-10-09 | 2024-04-09 | 上海漕泾热电有限责任公司 | Cooling device of flame detection probe |
| CN106895420A (en) * | 2017-04-10 | 2017-06-27 | 杨峥雄 | One kind circulation regenerative combustion furnace（RTO）Stewing stove method and apparatus |
| CN112503552A (en) * | 2020-11-06 | 2021-03-16 | 北方魏家峁煤电有限责任公司 | Fire detection sensor ash removal system, method and computer readable medium |
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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: 20140129 Termination date: 20140717 |
|
| EXPY | Termination of patent right or utility model |