CN2901009Y - Heat insulation sound conducting film type sound conducting tube - Google Patents
Heat insulation sound conducting film type sound conducting tube Download PDFInfo
- Publication number
- CN2901009Y CN2901009Y CN 200620028801 CN200620028801U CN2901009Y CN 2901009 Y CN2901009 Y CN 2901009Y CN 200620028801 CN200620028801 CN 200620028801 CN 200620028801 U CN200620028801 U CN 200620028801U CN 2901009 Y CN2901009 Y CN 2901009Y
- Authority
- CN
- China
- Prior art keywords
- heat insulation
- acoustic
- conducting pipe
- transaudient
- diaphragm
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a heat insulation acoustic diaphragm acoustic conductance conduit for the on-line monitoring apparatus of vapor leakage of pressure-bearing pipe in the boiler, comprising an acoustic conductance conduit. The utility model is characterized in that a heat insulation acoustic unit is provided inside the acoustic conductance conduit and connected with the back end of the acoustic conductance conduit. The structure of the heat insulation acoustic unit is that a heat insulation acoustic diaphragm is provided in an annular tube; the heat-proof acoustic diaphragm is fire resistant and heat insulation polyethylene film or silver paper. The heat insulation acoustic diaphragm acoustic conductance conduit of the utility model equipped with the heat insulation acoustic unit on the back end of the acoustic conductance conduit can prevent the flame and the hot gas in a normal condition from contacting with the sensing device directly and damaging the sensing device, thereby increasing the service life of the sensing device.
Description
Technical field
The utility model relates to acoustic conducting pipe, is a kind of heat insulation transaudient membrane type acoustic conducting pipe that is used for pressure-bearing pipe steam leakage on-Line Monitor Device in the boiler stove.
Background technique
Pressure-bearing pipes such as the water cooled furnace wall that in the boiler stove, is provided with, economizer, superheater and reheater, because in the pipe is high-temperature, high pressure fluid, outer radiation and the convection heat exchange that bears high-temperature flue gas of pipe, particularly for coal fired boiler, also bear the continuous erosion of grey particle simultaneously, under this very bad working environment, be easy to take place the steam leakage accident.
At present, the pressure-bearing pipe steam leakage accidents such as water cooled furnace wall, economizer, superheater and reheater that are provided with in the boiler stove have become the principal contradiction that influences electricity power enterprise's power generating equipment safe and stable operation, therefore how the slight steam of the pressure-bearing pipe that is provided with in the boiler stove is leaked early detection, to making appropriate arrangements maintenance strategy and shortening repair time, it is significant to reduce the visiting rate.In the existing boiler stove pressure-bearing pipe steam leak on-Line Monitor Device be by be connected with boiler furnace and with stove in the common metal pipe that communicates as acoustic conducting pipe, the sensor that is provided with at tube end is connected with signal pickup assembly, signal pickup assembly and microcomputer connect to form, the main effect of acoustic conducting pipe is to give sensor the noise signal transmission that pressure-bearing pipe steam in the boiler stove leaks, and realizes on-line monitoring so that send microcomputer to by signal pickup assembly.Because the end of the directly relative acoustic conducting pipe of sensor, when being in negative pressure state in the boiler stove (furnace pressure is less than barometric pressure), flame and hot gas in the boiler can not enter acoustic conducting pipe, can not damage sensor this moment, and when being in barotropic state in the boiler stove (furnace pressure is greater than barometric pressure), flame and hot gas in the boiler will enter acoustic conducting pipe, and this moment is because the flame high temperature in the boiler and the heat of hot gas, very easily damage sensor, greatly reduce working life.
Summary of the invention
Technical problem to be solved in the utility model is, prior art is carried out substantial improvements, provides a kind of boiler furnace flame and hot gas under barotropic condition of can preventing to damage the heat insulation transaudient membrane type acoustic conducting pipe of sensor.
Solving the technological scheme that its technical problem adopts is, a kind of heat insulation transaudient membrane type acoustic conducting pipe, and it comprises acoustic conducting pipe, it is characterized in that be built-in with the heat insulation transaudient body that is connected with the acoustic conducting pipe rear end at acoustic conducting pipe, the structure of described heat insulation transaudient body is, be provided with sleeve pipe, in sleeve pipe, be provided with heat insulation acoustic diaphragm.Described heat insulation acoustic diaphragm is high temperature resistant heat insulation poly tetrafluoroethylene or tin foil paper.
Heat insulation transaudient membrane type acoustic conducting pipe of the present utility model, owing to be built-in with the heat insulation transaudient body that is connected with the acoustic conducting pipe rear end with heat insulation acoustic diaphragm at acoustic conducting pipe, boiler furnace flame and hot gas under barotropic condition be can block and sensor, the long service life of sensor directly contacted and damage with sensor.
Description of drawings
Fig. 1 is heat insulation transaudient membrane type acoustic conducting pipe structure cross-sectional schematic.
Fig. 2 is the user mode structural representation.
Among the figure: 1 acoustic conducting pipe, 2 heat insulation transaudient bodies, 3 heat insulation acoustic diaphragms, 4 sleeve pipes, 5a, 5b flange, 5 c flanges, 6 glands, 7 sensors, 8 boiler furnaces.
Embodiment
Utilize drawings and Examples that the utility model is further described below:
With reference to Fig. 1, heat insulation transaudient membrane type acoustic conducting pipe has acoustic conducting pipe 1, is built-in with the heat insulation transaudient body 2 that is connected with acoustic conducting pipe 1 rear end at acoustic conducting pipe 1, and acoustic conducting pipe 1 and heat insulation transaudient body 2 are connected by flange 5a, 5b separately.The structure of heat insulation transaudient body 2 is, is provided with sleeve pipe 4, is provided with heat insulation acoustic diaphragm 3 in sleeve pipe 4.Heat insulation acoustic diaphragm 3 adopts high temperature resistant heat insulation poly tetrafluoroethylene or tin foil paper to press-fit in the rear end of sleeve pipe 4 by gland 6, for the acoustic reflection intensity that increases heat insulation acoustic diaphragm 3 can be on the high temperature resistant heat insulation poly tetrafluoroethylene plating light film, for example: aluminize, silver, chromium etc.; Heat insulation acoustic diaphragm 3 also can adopt binder to be adhered to the rear end of sleeve pipe 4.Sleeve pipe 4 can adopt metal tube, the best polyfluortetraethylene pipe that adopts.
With reference to Fig. 3, during use, acoustic conducting pipe 1 front end of heat insulation transaudient membrane type acoustic conducting pipe is connected with boiler furnace 8, can adopt to be welded to connect, the flange 5b of the flange 5a of acoustic conducting pipe 1 rear end, heat insulation transaudient body 2 rear ends and the flange 5c of sensor 7 box bodys are connected.Because the utility model is provided with heat insulation transaudient body 2 structures with heat insulation acoustic diaphragm 3 in acoustic conducting pipe 1, those skilled in the art are according to acoustics wave theory and interference theory, just can determine the setpoint distance of heat insulation acoustic diaphragm 3 and sensor senses head, so that make in the audio frequency range that the resonant frequency of acoustic conducting pipe produces when pressure-bearing pipe steam leaks in the boiler stove.
Claims (2)
1. heat insulation transaudient membrane type acoustic conducting pipe, it comprises acoustic conducting pipe, it is characterized in that: be built-in with the heat insulation transaudient body that is connected with the acoustic conducting pipe rear end at acoustic conducting pipe, the structure of heat insulation transaudient body is, is provided with sleeve pipe, is provided with heat insulation acoustic diaphragm in sleeve pipe.
2. heat insulation transaudient membrane type acoustic conducting pipe according to claim 1, it is characterized in that: the heat insulation acoustic diaphragm of described heat insulation transaudient body is high temperature resistant heat insulation poly tetrafluoroethylene or tin foil paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620028801 CN2901009Y (en) | 2006-05-24 | 2006-05-24 | Heat insulation sound conducting film type sound conducting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620028801 CN2901009Y (en) | 2006-05-24 | 2006-05-24 | Heat insulation sound conducting film type sound conducting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901009Y true CN2901009Y (en) | 2007-05-16 |
Family
ID=38085173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620028801 Expired - Fee Related CN2901009Y (en) | 2006-05-24 | 2006-05-24 | Heat insulation sound conducting film type sound conducting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901009Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782727A (en) * | 2016-04-28 | 2016-07-20 | 浙江大唐国际绍兴江滨热电有限责任公司 | Leakage detection method for natural gas system for gas power plant |
-
2006
- 2006-05-24 CN CN 200620028801 patent/CN2901009Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782727A (en) * | 2016-04-28 | 2016-07-20 | 浙江大唐国际绍兴江滨热电有限责任公司 | Leakage detection method for natural gas system for gas power plant |
| CN105782727B (en) * | 2016-04-28 | 2019-05-10 | 浙江大唐国际绍兴江滨热电有限责任公司 | A kind of leakage detection method of plant gas natural gas system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104976614A (en) | Multifunctional integrated combustor | |
| US8671890B2 (en) | Pipe assembly | |
| JP2013190229A (en) | Apparatus and method for tube leak inspection | |
| CN110186193A (en) | Control method of self-adaptive air pressure and gas water heater | |
| CN101225961A (en) | Anticorrosion superheater for refuse incineration exhaust-heating boiler | |
| CN2901009Y (en) | Heat insulation sound conducting film type sound conducting tube | |
| CN2911458Y (en) | Secondary air on-line monitoring system for boiler of power station | |
| CN1851316A (en) | Acoustic resonant cavity type acoustic conducting pipe | |
| CN208546962U (en) | A kind of mistake of U-shaped expansion bends three header balance pipe | |
| CN104101441B (en) | Real wall temperature testing system for high-temperature heating surface tube of thermal power unit and manufacturing process | |
| CN200941079Y (en) | Acoustics resonant cavity type acoustic conductance tube | |
| CN206944763U (en) | A kind of residual heat of gas cooker recycle device | |
| CN109654736A (en) | It is horizontal coal-fired to change gas fired-boiler | |
| CN206176328U (en) | Boiler casing's withstand voltage high temperature resistant detection device | |
| CN112460338B (en) | Sealing structure for tower type boiler wall penetrating pipe | |
| CN203965063U (en) | The true wall temperature test macro of fired power generating unit tube on high-temperature heating surface | |
| CN201155995Y (en) | Zinc-plating annealing stove exhaust gas pipeline temperature-detecting device | |
| CN201440106U (en) | On-line leakage monitoring device of steam superheater for industrial furnace | |
| CN202692003U (en) | Full-automatic pressure and water level control steam generator | |
| CN108627025B (en) | Inlet pipe structure of condensate water tank | |
| CN206112914U (en) | Scum pipe of circulating fluidized bed boiler | |
| CN110925735A (en) | Explosion-proof water tank of steam generator | |
| CN212869714U (en) | Gas steam generating device with automatic protection function | |
| CN211424359U (en) | Scaling detection protection structure applied to through-flow boiler | |
| CN211424461U (en) | Boiler capable of checking scale in water pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 |