CN205447810U - Flame detection device with two cooling function - Google Patents
Flame detection device with two cooling function Download PDFInfo
- Publication number
- CN205447810U CN205447810U CN201620147522.9U CN201620147522U CN205447810U CN 205447810 U CN205447810 U CN 205447810U CN 201620147522 U CN201620147522 U CN 201620147522U CN 205447810 U CN205447810 U CN 205447810U
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- Prior art keywords
- inner conduit
- cooling
- optical fiber
- fire
- air
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- Expired - Fee Related
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- Fire-Detection Mechanisms (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model belongs to the technical field of flame in the thermal power trade detects, concretely relates to flame detection device with two cooling function, including and examining fiber optic assembly and probe through the fire of connector connection, the fire is examined and is equipped with the cooling air tee bend between fiber optic assembly and the connector, the fire is examined fiber optic assembly and is included outer catheter and inner conduit subassembly, and the inner conduit subassembly includes inner conduit and optic fibre, and optic fibre is installed in inner conduit, and outer catheter's one end is passed through metal collapsible tube and is connected the other end and cooling air tee junction with inner conduit, inner conduit's air outlet section is opened along its axis direction has a plurality of air inlets seam, and inner conduit's air intake intersegmental part is equipped with cooling air ring. The utility model discloses a dividing ferrule's interior bushing portion and cutting ventilating and cooling, increase cooling air ring simultaneously, sleeve pipe optic fibre also can be avoided high temperature to damage optic fibre by timely cooling in making to improve the problem of probe deposition coking, had certain promotion to security performance and the profit space of unit.
Description
Technical field
This utility model belongs to the fire defector technical field in thermal power industry, is specifically related to a kind of flame detecting device with double refrigerating function.
Background technology
Shanxi Zhangshan Power Generation Co., Ltd. of Jing Neng group 2 × 600MW unit fire inspection detection device uses the Uniflame flame detector that FORNEY company of the U.S. produces.Fire inspection scanning device uses 95IRS2-2 type product, comprises an infra red flame sensor, and response infrared spectrum is 700-1700 nano wave length, and this sensor is suitable for the situation of oil and coal fuel combustion.Every stove have employed 36 set products, and its core is fibre-optical probe and fire inspection optical fiber.
Uniflame flame detector includes infrared ray sensor, can detect single burner and multi-combustor target flame with/without.Inside, with flame relay, adjustable (having fire/nothing fire) ON/OFF flame threshold value, therefore need not long-range flame amplifier, integrated flame detector, and its operation principle is as shown in Figure 3.
The transducer portion of fire inspection sensor is arranged on one end of whole system, and fire inspection optical fiber is arranged on inner sleeve components.By the fiber-optic signal within detection inner catheter, transmitter differentiates that, with or without fire, the other end of whole system is resistant detector.Ferrule is divided into inner sleeve and trocar sheath two parts, cooling wind to flow to outer sleeve portion from cooling duct, flow out through flame detecting probe, and the only probe segment that the wind that can be cooled directly cools down, fiber section is not then effectively cooled, thus causing trouble takes place frequently.
DCS picture there is two paths of signals.One is this angle flame simulating amount signal of this layer, and this signal provides only supervision effect.It two is the on-off model at this angle of this layer, and this signal is with coal pulverizer protection (layer signal four takes three) and boiler furnace protection (full burner hearth is without fire).Therefore it is general seen from the significance level of the reliability of fire inspection on-off model.
Therefore how to ensure its stability run and reliability, extend its service life, reduce maintenance cost and become the emphasis of coal-burning power plant's growing interest.Along with the growth of the time of operation, it is positioned at the fiber section of inner sleeve because of not being effectively cooled for a long time, causes air-out smooth because of coking at probe in addition, thus cause fiery fiber failure of examining to take place frequently.Because of fire inspection band coal pulverizer protection, therefore time serious, directly affect unit safety stable operation.
Summary of the invention
This utility model is in order to solve to cause flame detector Frequent Troubles, the problem affecting unit safety operation because cooling effect is the best, it is provided that a kind of flame detecting device with double refrigerating function.
This utility model adopts the following technical scheme that
A kind of flame detecting device with double refrigerating function, including the fire inspection optical fiber component connected by adapter and probe, is provided with cooling wind threeway between fire inspection optical fiber component and adapter；Described fire inspection optical fiber component includes outer catheter and inner conduit assembly, and inner conduit assembly includes inner catheter and optical fiber, and optical fiber is installed in inner catheter, and one end of outer catheter is connected with inner catheter by metal hose, and the other end is connected with cooling wind threeway；The air outlet section of described inner catheter has some air intakes seam along its axis direction, and the air inlet intrasegmental part of inner catheter is provided with cooling vane.
For threadeding between described cooling vane with inner catheter inwall.
The central authorities of described cooling vane have the connector coordinated with optical fiber, are laid with some air inlets around connector.
This utility model has the advantages that
1, the creative inner sleeve to ferrule carries out cutting ventilating and cooling, makes inner sleeve optical fiber also can be cooled down in time, it is to avoid high temperature failure optical fiber；
2, creative design with inner sleeve screw thread with diameter dimension cooling vane, make cooling wind rotate with higher pressure and flow through herein, thus the problem improving probe dust deposition；
3, this set double-jacket tube cooling air system thoroughly solves the crux that fire inspection optical fibre high temp damages, and fire inspection fiber lifetime is greatly prolonged, and unit economy promotes substantially；
4, this device cost of manufacture is low, can use continuously, can promote the use of in thermal power plant.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of cooling vane；
Fig. 3 is the fundamental diagram of flame detector；
In figure: 1-adapter, 2-cool down wind threeway, 3-outer catheter, 4-cooling vane, 5-light top guide, 6-optical fiber, 7-metal hose, 8-air intake seam, 9-inner catheter, 10-air inlet, 11-connector.
Detailed description of the invention
In conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:
The flame detecting device with double refrigerating function as shown in Figure 1, including the fire inspection optical fiber component connected by adapter 1 and probe, is connected by cooling wind threeway 2 between fire inspection optical fiber component and adapter 1；Described fire inspection optical fiber component includes outer catheter 3 and inner conduit assembly, and inner conduit assembly includes inner catheter 9 and optical fiber 6, and optical fiber 6 is installed in inner catheter 9, and one end of outer catheter 3 is connected with inner catheter 9 by metal hose 7, and the other end is connected with cooling wind threeway 2；The air outlet section (afterbody) of described inner catheter 9 has three air intake seams 8 along its axis direction, and the air inlet intrasegmental part of inner catheter 9 is provided with cooling vane 4.
Fire inspection optical fiber component is made up of inner sleeve and trocar sheath two parts.Inner conduit assembly inserts in outer catheter assembly in use, is made up of optical fibers, metal hose, conduit, nut etc..Fire inspection inner conduit assembly uses multiple provision for thermal insulation.Fire inspection optical fiber heatproof reaches 500 DEG C, and in the case of cooling air system is properly functioning, fire inspection inner conduit assembly temperature is generally below box temperature, is therefore guaranteed the service life of conduit tube component and optical fiber.
Cooling the most in time can not be obtained in view of the optical fiber being positioned in inner sleeve, therefore when unit keeps in repair, fire is examined ferrule and transforms, make optical fiber and probe to be winding is effectively cooled, thus reduce maintenance and the maintenance cost of flame detection system, improve the safe and stable operation of unit.
1. double-jacket tube plant modification
At inner catheter rear portion, (air outlet section) cuts out three road slits, between making fire inspection cooling wind not only through interior outer catheter, enter between inner catheter and optical fiber (such as Fig. 1) also by three slits herein, strengthen the cooling wind cooling effect to optical fiber, in simultaneously, the cooling wind between deferent and optical fiber is finally by light top guide assembly, also strengthen the purging effect to fused silica glass, reduce the possibility that dust stratification produces.
2. cooling vane makes
Meanwhile, inner sleeve air outlet uses with inner sleeve screw thread with the cooling vane (such as Fig. 2) of diameter dimension, and the employing of cooling vane makes cooling wind rotate with higher pressure to flow through herein, thus the problem improving probe dust deposition.
3. the installation and debugging of system
After flame detection system inner sleeve and cooling vane have all been transformed, install according to inspection standard, note wiping optical fiber both sides dust stratification and underproof resistant detector being changed.
4. transformation result is followed the tracks of
Device described in the utility model is to reducing the flame detecting device number of stoppages and reducing maintenance cost substantially, and security performance and profit space to unit have a certain upgrade.Start so far from JIUYUE in 2014 #4 stove on the 25th, professional carries out irregular follow-up investigations to the fire inspection Fibre Optical Sensor in stoppage in transit coal seam, find that camera lens is all without coking phenomenon, inner sleeve Fibre Optical Sensor outward appearance is good, turn black sign without baking, thoroughly solve optical fiber and probe in flame detecting device for many years and be not effectively cooled and cause the defect of fire inspection Frequent Troubles, be effectively guaranteed unit safety, stable, Effec-tive Function, maintenance cost reduces substantially, can promote the use of in thermal power plant.
Claims (3)
1. there is a flame detecting device for double refrigerating function, including the fire inspection optical fiber component connected by adapter (1) and probe, it is characterised in that: it is provided with cooling wind threeway (2) between fire inspection optical fiber component and adapter (1)；Described fire inspection optical fiber component includes outer catheter (3) and inner conduit assembly, inner conduit assembly includes inner catheter (9) and optical fiber (6), optical fiber (6) is installed in inner catheter (9), one end of outer catheter (3) is connected with inner catheter (9) by metal hose (7), and the other end is connected with cooling wind threeway (2)；The air outlet section of described inner catheter (9) has some air intakes seam (8) along its axis direction, and the air inlet intrasegmental part of inner catheter (9) is provided with cooling vane (4).
The flame detecting device with double refrigerating function the most according to claim 1, it is characterised in that: for threadeding between described cooling vane (4) and inner catheter (9) inwall.
The flame detecting device with double refrigerating function the most according to claim 2, it is characterised in that: the central authorities of described cooling vane (4) have the connector (11) coordinated with optical fiber (6), are laid with some air inlets (10) around connector (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147522.9U CN205447810U (en) | 2016-02-29 | 2016-02-29 | Flame detection device with two cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147522.9U CN205447810U (en) | 2016-02-29 | 2016-02-29 | Flame detection device with two cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205447810U true CN205447810U (en) | 2016-08-10 |
Family
ID=56604290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620147522.9U Expired - Fee Related CN205447810U (en) | 2016-02-29 | 2016-02-29 | Flame detection device with two cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205447810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2016
- 2016-02-29 CN CN201620147522.9U patent/CN205447810U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20190228 |