CN201145751Y - Dual cooling duct for flame detector - Google Patents
Dual cooling duct for flame detector Download PDFInfo
- Publication number
- CN201145751Y CN201145751Y CNU2008200549606U CN200820054960U CN201145751Y CN 201145751 Y CN201145751 Y CN 201145751Y CN U2008200549606 U CNU2008200549606 U CN U2008200549606U CN 200820054960 U CN200820054960 U CN 200820054960U CN 201145751 Y CN201145751 Y CN 201145751Y
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- duct
- outer catheter
- pipe
- cooling
- outer duct
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Abstract
The utility model discloses a double cooling duct for a flame detector, which is used to place flame detection optical fibers. The double cooling duct comprises an outer duct, a cooling wind pipe coupler, an inner duct, a fixed pipe, a connecting sleeve, an outer protecting pipe, and a second cooling wind pipe, wherein, the cooling wind pipe coupler has a T-tube structure, one end of the outer duct is inserted into one end of the T-tube, and the other two ends of the T-tube are respectively connected with an end cover and a first cooling wind pipe; the inner duct is inserted into the outer duct; the fixed pipe is sleeved outside the outer duct; the connecting sleeve is sleeved at one end of the fixed pipe and outside the outer duct, and is fixed with the outer duct through a bolt; the outer protecting pipe is sleeved outside the outer duct and one end of the fixed pipe, is connected with one end of the fixed pipe, and is provided with a connecting connector; and the second cooling wind pipe is communicated with the outer duct through the connecting connector. The double cooling duct for the flame detector draws into cooling air from the outer duct to cool the inner duct and the optical fibers, and improves the protection deadline for the optical fibers to between 4 and 5 years; the cooling air is drawn between the outer protecting pipe and the outer duct to cool detection regions of the outer duct and the front end of the outer duct, which plays a role in suppressing the coking in a front end detection viewing angle and reduces field maintenance amount.
Description
Technical field
The utility model relates to the flame detector field, the flame detector dual-cooled conduit that the inspection of particularly a kind of W type flame boiler fire detects.
Background technology
At present, power plant is extensive use of W type flame boiler burden peak regulation task, the structure of W type flame boiler is different with conventional coal-burning boiler, its firing chamber is made up of the firing chamber of bottom and the secondary furnace on top, the depth ratio secondary furnace of firing chamber is big by 80%～120%, the top of front outshot constitutes donor, breeze airflow and overfire air jet are installed in (only coaling on the W type flame boiler donor that has powder air-flow and weary gas jets) on the donor, the breeze airflow of following spray catches fire, and the back is downward stretches, after meeting, bottom, firing chamber and tertiary air turn back upwards, along rising on the furnace chamber axis, thereby form W type flame, the products of combustion air-flow rises and enters secondary furnace.
Also has a kind of W type flame boiler, adopt the high coal powder density burner of FW type cyclone separating, a spot of wind is only sent in the arch, a large amount of secondary air from front-back wall step by step level evenly send into, anthracitic burning is satisfied in classification oxygen supply for this and after-flame is favourable, if but air distribution is improper, very easily cause the gas stream in the stove short circuit, cause unburned carbon in flue dust to increase, even problem such as furnace outlet slagging scorification occurs.Concerning W type flame boiler, for guaranteeing catching fire of stone coal, meager coal, primary air ratio selects lowlyer, is generally 15%～20%.Owing to rely on the air quantity and the wind rate of a wind itself can't obtain enough penetration depths, so must send into a large amount of secondary air in the arch, utilize the injection of arch secondary air, guarantee that a wind has good penetration depth.
Optical fiber is when gathering light beam, because a large amount of radiation heat that produce during fuel combustion in the boiler and fiber-optic component fixing are to the conduction warm of optical fiber, cause optical fiber to come unstuck, burn or the logical light rate of optical fiber descends and boiler combustion causes coking, the inspection of influence fire detects phenomenons such as visual angle, cause flame detector finally to control the phenomenon of boiler shutdown because of producing no fiery signal, cause heavy losses, because the easy coking in burner nozzle place of boiler, cause the fire inspection to detect the visual angle and be subjected to the influence of coking and detect less than flame.Simultaneously; because optical fiber self cost is also than higher; need often to go coke cleaning after the boiler-burner coking; because boiler site environment temperature drift; make troubles for the maintenance of boiler fire inspection for this reason; for effective protection optical fiber and the coking that prevents fire inspection detection visual angle, and adopt the conduit of being convenient to operate rational in infrastructure to be very important.
Yet, protect the conduit of optical fiber at present, three kinds of situations are arranged: 1, the relative simple catheter of structure, very poor to the cooling effect of optical fiber, be difficult to guarantee the normal use of optical fiber; 2, the conduit of structure relative complex though the cooling effect of optical fiber has been increased slightly, is brought up to 1～2 year to the protection period of optical fiber, because of causing cost, complex structure increases, and very inconvenience of operation in using at the scene.3, the detection visual angle coking that causes of boiler combustion, the detection of influence fire inspection.
Summary of the invention
The purpose of this utility model is to provide a kind of flame detector dual-cooled conduit; protect optical fiber effectively; reduce cost; guarantee that the boiler-burner front end is difficult for coking; make execute-in-place simple simultaneously; be convenient to safeguard and reduce and safeguard that optical fiber is fragile, the execute-in-place complicated problems thereby solved preferably.
To achieve these goals, the technical solution of the utility model is:
Flame detector dual-cooled conduit is for placing the flame detection fiber; Comprise, outer catheter, the cooling duct hookup, it is a T type tubular construction, described outer catheter one end is inserted in this T type pipe one end, and by a bolt; Two end difference links cover and first cooling duct in addition; Inner catheter is inserted in the outer catheter; Comprise that also stationary pipes is sheathed on outside the outer catheter, adapter sleeve is sheathed on outside stationary pipes one end and the outer catheter, and is connected in outer catheter by bolt, also installs seal between stationary pipes end and adapter sleeve inwall and the outer catheter; Outer pillar is sheathed on outside outer catheter and stationary pipes one end, and connects mutually with stationary pipes one end; Should also establish a connecting joint on the outer pillar; Second cooling duct is communicated with outer catheter by described connecting joint.
Further, establish an operation valve on second cooling duct described in the utility model.
The beneficial effects of the utility model are,
The utility model dual-cooled conduit is to the type of cooling of the protection employing cooling air of optical fiber, and for simplified structure, conduit is divided into inside and outside conduit and protects cooling duct outward.Optical fiber is fixed on integral body penetrates in the outer catheter after the inner catheter, and introduces cooling air, inner catheter and optical fiber are cooled off, will be increased to the protection period of optical fiber 4～5 years from outer catheter; Simultaneously, introduce cooling air between pillar and the outer catheter outside, surveyed area cooling to outer catheter and outer catheter front end, inhibiting effect is played in coking in the front-end detection visual angle, reduce the field maintemance amount, do not allow optical fiber damage simultaneously for the ease of dismounting again and the site environment temperature too high, to also having done structural adjustment with the tight contact portion of optical fiber, make when dismounting optical fiber do not do rotation; In order to reduce cost,, flexible pipe rear end material in the conduit is changed into carbon steel by stainless steel simultaneously according to the real work needs.
The utility model to the protection of optical fiber be improved significantly, structure is also fairly simple, and is easy to operate.
Description of drawings
Fig. 1 is the structure cut-open view of the utility model one embodiment.
Embodiment
Referring to Fig. 1, flame detector of the present utility model dual-cooled conduit inserts boiler wall 15, for placing the flame detection fiber; Comprise outer catheter 1, cooling duct hookup 2, end cap 3, first cooling duct 4, inner catheter 5, stationary pipes 6, adapter sleeve 7, outer pillar 8, second cooling duct 9;
Outer pillar 8 is sheathed on outside outer catheter 1 and stationary pipes 6 one ends, and connects mutually with stationary pipes 6 one ends; Should also establish a connecting joint 12 on the outer pillar 8; Second cooling duct 9 is communicated with outer pillar 8 by described connecting joint 12, establishes an operation valve 14 on it.
Integral body penetrated in the outer catheter 1 after optical fiber was fixed on inner catheter 5, and introduced cooling air from outer catheter 1, and inner catheter 5 and optical fiber are cooled off; Simultaneously, introduce cooling air between pillar 8 and the outer catheter 1 outside,, inhibiting effect is played in the coking in the front-end detection visual angle, reduce the field maintemance amount the surveyed area cooling of outer catheter 1 and outer catheter 1 front end.
In sum, the utility model carries out armour tubing to transmitting beam to the optical fiber of flame detector, by double-deck cooling air design, solve the detection problem that coking is installed in the inspection of W stove fire well, simultaneously, by installing two-layer cooling air additional, the coking phenomenon of boiler fire inspection surveyed area also has inhibition; And the utility model is easy to operate.
Claims (2)
1. flame detector dual-cooled conduit supplies to place the flame detection fiber; Comprise,
Outer catheter,
The cooling duct hookup, it is a T type tubular construction, described outer catheter one end is inserted in this T type pipe one end, and by a bolt; Two end difference links cover and first cooling duct in addition;
Inner catheter is inserted in the outer catheter; It is characterized in that, also comprise,
Stationary pipes is sheathed on outside the outer catheter;
Adapter sleeve is sheathed on outside stationary pipes one end and the outer catheter, and is connected in outer catheter by bolt, also installs seal between stationary pipes end and adapter sleeve inwall and the outer catheter;
Outer pillar is sheathed on outside outer catheter and stationary pipes one end, and connects mutually with stationary pipes one end; Should also establish a connecting joint on the outer pillar;
Second cooling duct is communicated with outer catheter by described connecting joint.
2. flame detector dual-cooled conduit as claimed in claim 1 is characterized in that, establishes an operation valve on described second cooling duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200549606U CN201145751Y (en) | 2008-01-22 | 2008-01-22 | Dual cooling duct for flame detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200549606U CN201145751Y (en) | 2008-01-22 | 2008-01-22 | Dual cooling duct for flame detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145751Y true CN201145751Y (en) | 2008-11-05 |
Family
ID=40082634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200549606U Expired - Lifetime CN201145751Y (en) | 2008-01-22 | 2008-01-22 | Dual cooling duct for flame detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145751Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079422A1 (en) * | 2009-12-30 | 2011-07-07 | 北京航天万源煤化工工程技术有限公司 | Flame detecting device |
| CN106196160A (en) * | 2016-09-30 | 2016-12-07 | 烟台龙源电力技术股份有限公司 | A kind of positive pressure environment Image Fire checking device and anti-fouler thereof |
| CN106838976A (en) * | 2017-03-29 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | A kind of flame detector cooling device and method |
-
2008
- 2008-01-22 CN CNU2008200549606U patent/CN201145751Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079422A1 (en) * | 2009-12-30 | 2011-07-07 | 北京航天万源煤化工工程技术有限公司 | Flame detecting device |
| CN102257324B (en) * | 2009-12-30 | 2013-03-06 | 航天长征化学工程股份有限公司 | Flame detecting device |
| US9115933B2 (en) | 2009-12-30 | 2015-08-25 | Changzheng Engineering Co., Ltd. | Flame detection device |
| CN106196160A (en) * | 2016-09-30 | 2016-12-07 | 烟台龙源电力技术股份有限公司 | A kind of positive pressure environment Image Fire checking device and anti-fouler thereof |
| CN106196160B (en) * | 2016-09-30 | 2018-12-21 | 烟台龙源电力技术股份有限公司 | A kind of positive pressure environment image fire monitor equipment and its anti-fouler |
| CN106838976A (en) * | 2017-03-29 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | A kind of flame detector cooling device and method |
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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: 20081105 |