CN202075046U

CN202075046U - Boiler coking infrared detector

Info

Publication number: CN202075046U
Application number: CN2011200564824U
Authority: CN
Inventors: 吴福儿
Original assignee: University of Shaoxing
Current assignee: University of Shaoxing
Priority date: 2011-03-07
Filing date: 2011-03-07
Publication date: 2011-12-14
Anticipated expiration: 2021-03-07

Abstract

The utility model discloses a boiler coking infrared detector, comprising a planar infrared temperature measuring device and a display. The planar infrared temperature measuring device comprises a scanner, a video cassette recorder, and a data processor, and the scanner, the video cassette recorder, the data processor and the display are in electrical signal connections in turn via cables. By using the boiler coking infrared detector of the utility model, the size and thickness of the coking block can be displayed visually, the changes of the coking can be deduced according to the variation of the boiler coking infrared detector, the coking reason in a tower also can be judged preliminarily, and the defect of needing a radiation source to irradiate a to-be-detected object of the conventional detector can be solved.

Description

The boiler coke infrared detector

Technical field

The utility model relates to a kind of pick-up unit of boiler bottom coking.

Background technology

Boiler coke is a phenomenon commonplace in the coal-burned industrial boiler operation.It can destroy the normal combustion operating mode, reduces boiler output, destroys the normal water circulation, causes pipe explosion accident, furnace outlet is stopped up and is forced to blowing out.

Exist a kind of need target to be measured to be shone at present by means of radiation source, make coking position and other position produce temperature difference, utilize temperature contrast on the thermal image figure to determine the detector of defective locations again, this instrument is subjected to best heating or the restriction of observing time, and must pre-estimate the position of coking.

The utility model content

The purpose of this utility model provides a kind of boiler coke infrared detector, solves the existing above-mentioned defective of present detector.

The technical scheme that its technical matters that solves the utility model adopts is:

The boiler coke infrared detector comprises plane infrared thermometer, display; The plane infrared thermometer comprises scanner, video tape recorder, data processor; Scanner, video tape recorder, data processor, display connect by the cable electric signal successively.

The beneficial effects of the utility model are that the utility model can demonstrate the size and the thickness of long-pending coke button intuitively, in addition, can also change according to it and infer long-pending burnt change, and tentatively judge the burnt reason of tower inner product.

Description of drawings

Fig. 1 is a fundamental diagram of the present utility model;

1. boilers among the figure, 2. long-pending burnt, 3. plane infrared detector, 31. scanners, 32. video tape recorders, 33. data processors, 4. display.

Embodiment

As shown in Figure 1, a kind of boiler amasss burnt infrared detector, is made up of plane infrared thermometer 3, display 4.When around the plane infrared detector boiler 1, the size and the thickness of long-pending burnt 2 in the boiler 1 are reflected in the display 4, can demarcate long-pending burnt 2 size and thickness from picture.

Temperature measuring and imaging principle of the present utility model is: the scanner 31 of plane infrared thermometer 3 can be converted into convey electronic video signals to the heat radiation from need measurement equipment surface, 32 pairs of electronic video recordings of video recorder also store, enter data processor 33 then and carry out data processing and deliver to display 4 and reset, be converted to corresponding visual picture.The heat radiation that scanner 31 is received, except that heat radiation from the Devices to test surface, also have it to the reflected radiation of surrounding environment and the atmosphere radiation between equipment and the scanner, the built-up radiation that promptly receives is made up of target emanation, reflected radiation, atmosphere radiation three parts.The radiation relation can be determined by following formula:

I＝?

Figure 2011200564824100002DEST_PATH_DEST_PATH_IMAGE001

In the formula: I ₀--the equipment calorific value of measuring (IU);

I _Anb--the calorific value of being demarcated under the environment temperature (IU);

I _Atm--the calorific value of being demarcated under the atmospheric temperature (IU);

The calorific value (IU) that the I--device temperature is demarcated down;

τ--atmospheric transmissivity;

ε--equipment surface emissivity.

The known device slin emissivity can be calculated the two-dimensional temperature field of equipment surface by above-mentioned formula.

Rotary kiln and other various types of steel bushing stoves are widely used at China's industrial circle, are the indispensable equipment of industry such as coloured, metallurgical, building materials.Rotary kiln refractory brick comes off and can cause stove steel bushing temperature to raise significantly, and then produces local deformation.Not only can cause serious harm, but also can cause the kiln that stops of long period to keep in repair, cause tremendous influence producing with economy to the kiln body.Utilize thermal infrared imager can effectively monitor the refractory brick release failure.After refractory brick came off in the kiln, the temperature of stove outer steel sleeve obviously rose, and by infrared on-line monitoring system, can judge in the kiln refractory brick come off position and size, and on-call maintenance reduces the infringement to the kiln body.To the monitoring of kiln body temperature degree, can also understand kiln temperature variation and because the loss that staff's abnormal operation brings simultaneously.

Cracking fractionator prodelta clay Jiao is the key that influences the device long-term operation in the petrochemical equipment, and influence factor is many, and difficulty of test is big.When a part deposition was burnt in the tower, this place's heat the moon increased, and the low temperature cold-zone promptly occurs on the thermography of outer wall corresponding topical position at the bottom of the tower, the cold-zone just appears significantly showing on the embossment figure of display, promptly dark district, and can show temperature is shown, thereby judge long-pending burnt thickness and area.

Claims

1. the boiler coke infrared detector comprises display, it is characterized in that: also comprise the plane infrared thermometer; The plane infrared thermometer comprises scanner, video tape recorder, data processor; Scanner, video tape recorder, data processor, display connect by the cable electric signal successively.