CN203310377U - Refining device thickness detection system - Google Patents
Refining device thickness detection system Download PDFInfo
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- CN203310377U CN203310377U CN201320187039XU CN201320187039U CN203310377U CN 203310377 U CN203310377 U CN 203310377U CN 201320187039X U CN201320187039X U CN 201320187039XU CN 201320187039 U CN201320187039 U CN 201320187039U CN 203310377 U CN203310377 U CN 203310377U
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Abstract
The utility model provides a refining device thickness detection system comprising an infrared thermal image acquisition module, an infrared thermal image preprocessing unit and an infrared thermal image comparison unit which are connected in sequence. The infrared thermal image comparison unit is used for comparing a gray level difference of refining device images which are acquired by the infrared thermal image acquisition module successively and is subjected to the preprocessing by the infrared thermal image preprocessing unit. A thickness calculation unit is connected with the infrared thermal image comparison unit and is used for calculating the thickness distribution change of a refining device according to the gray level difference. According to the system, through acquiring the infrared thermal images of the refining device, the infrared thermal images which are acquired successfully are compared, thus the thickness distribution of the refining device is analyzed so as to determine the corrosion situation of the refining device, the adoption of the corresponding measures to a seriously corroded part by the staff is facilitated, and the hidden dangers are eliminated.
Description
Technical field
The utility model relates to a kind of refinery device thickness detection system.
Background technology
In the production run of the industries such as oil-refining chemical, owing in crude oil, containing corrosive medium, the refinery device of refinery factory usually appears, especially the heavy corrosion phenomenon appears in the pipeline inwall, cause pipeline to be revealed, cause that thus device stops work, economic loss and have potential safety hazard.
The utility model content
In view of this, fundamental purpose of the present utility model is, a kind of refinery device thickness detection system is provided, by being captured in the thermal-induced imagery of refinery device under different thermal equilibrium states, and the thermal-induced imagery that will successively gather compares, and then the thickness distribution of Realization analysis refinery device to be to determine Corrosion Status, thus the potential safety hazard of stopping.
Refinery device thickness detection system comprises that the thermal-induced imagery connected successively gathers module, thermal-induced imagery pretreatment unit and thermal-induced imagery comparing unit;
Described thermal-induced imagery comparing unit gathers module for thermal-induced imagery relatively and successively gathers, and by the gray difference of the pretreated refinery installation drawing of thermal-induced imagery pretreatment unit picture;
The THICKNESS CALCULATION unit, be connected with the thermal-induced imagery comparing unit, changes for the thickness distribution of calculating the refinery device according to described gray difference.
By upper, by gathering the thermal-induced imagery of refinery device, the thermal-induced imagery that front and back are gathered compares, and then the thickness distribution of Realization analysis refinery device to be to determine the Corrosion Status of refinery device, thus the potential safety hazard of stopping.
Optionally, also comprise storage unit, be connected with described THICKNESS CALCULATION unit, store the functional relation between gray difference and refinery device thickness.
Optionally, described thermal-induced imagery gathers module and comprises first to fourth thermal-induced imagery collecting unit, uniformly-spaced arranges along the circumferencial direction of refinery device.
By upper, realize comprehensive collection refinery plant or pipeline walls image, avoid shooting blind angle amount.
Optionally, described first to fourth thermal-induced imagery collecting unit adopts USB port to carry out image transmitting.
By upper, improve the communication compatibility of thermal-induced imagery collecting unit.
Optionally, also comprise alarm unit, be connected with described THICKNESS CALCULATION unit;
Described THICKNESS CALCULATION unit also, is controlled alarm unit and is reported to the police during lower than lower safety limit be used to the thickness of working as the refinery device calculated.
By upper, when the heavy corrosion phenomenon appears in the refinery device, and alarm, thereby the potential safety hazard of stopping.
The accompanying drawing explanation
Fig. 1 is the principle schematic of refinery device thickness detection system;
Fig. 2 is the position view that refinery device and thermal-induced imagery gather module.
Embodiment
Refinery device thickness detection system provided by the utility model, by being captured in the thermal-induced imagery of (under thermal equilibrium state, device shut-down cooling state and start up soaking condition) refinery device under different conditions, comparison to thermal-induced imagery that front and back gather, analyze the thickness distribution of refinery device to determine the Corrosion Status of refinery device, be convenient to the staff corresponding measure is taked in the seriously corroded position, to stop potential safety hazard.Described refinery device comprises high temperature refining device and the pipeline inwall of refinery factory.With reference to the accompanying drawings the embodiment of refinery device thickness pick-up unit described in the utility model is described in detail.
Refinery device thickness pick-up unit comprises that the thermal-induced imagery of signal connection gathers module 10, thermal-induced imagery pretreatment unit 20, thermal-induced imagery comparing unit 30 and THICKNESS CALCULATION unit 40 successively.
Thermal-induced imagery gathers module 10 and realizes by the thermal-induced imagery collecting unit that is arranged at refinery device different angles, and at regular intervals, thermal-induced imagery gathers module 10 and just carries out image acquisition, can be 6 hours this interval time, 8 hours or 12 hours.The thermal-induced imagery gathered carries out image output by USB port.
Described thermal-induced imagery collecting unit resolution is 320*240; The temperature range detected comprises-20 ℃～120 ℃, 0 ℃～650 ℃ and 200 ℃～1200 ℃, temperature control≤0.05 ℃, temperature measurement accuracy can reach ± 2 ℃ or ± 2%.The screen of thermal-induced imagery collecting unit is liquid crystal touch screen, the temperature that can show position that gesture is touched, and the maximum temperature value place pixel, minimum value place pixel and the temperature-averaging value that show present image, the thermal-induced imagery gathered, after hereinafter described thermal-induced imagery pretreatment unit 20 carries out pre-service, is stored in storage unit (not shown).In the present embodiment, thermal-induced imagery gathers module 10 as required, and a plurality of thermal-induced imagery collecting units are set, for instance, can equidistantly arrange along the refinery device, for example the pipeline walls length of refinery device is 50 meters, the thermal-induced imagery collecting unit is equidistantly arranged every 5 meters; And for example every equidistance, be arranged at respectively the front and back of refinery device; Preferably, also can be as shown in Figure 2, every equidistance, along the circumferencial direction of refinery device, four thermal-induced imagery collecting units are set uniformly-spaced respectively, to obtain the image of refinery device circumference all angles.In addition, also can be provided for thermal-induced imagery and gather the track that module 10 moves along refinery device pipeline walls.
Thermal-induced imagery pretreatment unit 20 carries out pre-service for thermal-induced imagery being gathered to module 10 image that gathers, and comprises filtering, gray processing and binary conversion treatment.The function of described thermal-induced imagery pretreatment unit 20 adopts based on the image preprocessed chip of FPGA and realizes.
In the process of carrying out image acquisition, due to uneven illumination or environmental change, cause thus the brightness variation of the image gathered inhomogeneous, so image can produce a lot of noises.By the collection image is carried out to the filtering processing, the removal of images noise is to overcome image disruption.
Gray processing is in order to accelerate the processing speed of image comparison, at first change the color attribute of pixel, the image gathered is removed to R(red), G(is green), B(indigo plant) three primary colors, each pixel of the gray level image after conversion is with the gray-scale value of this pixel of byte representation.
Image binaryzation is processed gray level image is divided into to 0～255, and its numerical value is larger, means this pixel whiter (being that brightness is high), and numerical value is less just more black.
Thermal-induced imagery comparing unit 30 for by pretreated front and back two width images with compare, draw the image change zone.Described thermal-induced imagery comparing unit 30 adopts has the image chip realization of calculating comparing function, and for example can select model is the chip realization of V300epq240-8.
Described thermal-induced imagery comparing unit 30 carries out calculus of differences by the gray-scale value of each pixel in twice of the front and back thermal-induced imagery of storing in the image that gathers and storage unit, and operation result is deposited to array I(xi, a yj) in the middle of.Wherein, the x in array means horizontal ordinate, and y means ordinate; I, j mean respectively the ordinal number of horizontal ordinate or ordinate pixel.
Calculate array I(xi, yj) in the gray-scale deviation zone, specifically, by the pixel in array from top to bottom, with predefined gray threshold I0, compare from left to right, when the gray scale difference of current pixel point is greater than I0, mean that changing appears in the thickness of refinery device, record this changing value.
THICKNESS CALCULATION unit 40, for the gray difference of the different pixels point of foundation thermal-induced imagery comparing unit 30 through relatively calculating, calculates the thickness distribution variable quantity of refinery device.
Wherein, described storage unit also is connected with THICKNESS CALCULATION unit 40, also stores the functional relation between the thickness of gray difference and refinery device.THICKNESS CALCULATION unit 40 calculates the variation in thickness of refinery device according to this functional relation.
Preferably, also comprise alarm unit (not shown), be connected with THICKNESS CALCULATION unit 40, during lower than lower safety limit, the 40 output control informations of THICKNESS CALCULATION unit, control alarm unit and report to the police when the thickness of refinery device.
Below the principle of work of the utility model refinery device thickness pick-up unit is described, thermal-induced imagery gathers module 10 and is captured at regular intervals under different conditions the refinery device at the thermal-induced imagery (thermal-induced imagery gathers module 10 and immobilizes with relative position and the angle of refinery device) of same position, the image that gathers after thermal-induced imagery pretreatment unit 20 carries out pre-service, deliver to thermal-induced imagery comparing unit 30, current thermal-induced imagery and previous front thermal-induced imagery are carried out to gray scale relatively, show whether image exists the grey scale change zone, if there is region of variation, functional relation between the gray difference of being stored according to storage unit by THICKNESS CALCULATION unit 40 and the thickness of refinery device, calculate the variation in thickness of refinery device, when its thickness during lower than lower safety limit, the 40 output control informations of THICKNESS CALCULATION unit, controlling connected alarm unit reports to the police.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a refinery device thickness detection system, is characterized in that, comprises that the thermal-induced imagery connected successively gathers module (10), thermal-induced imagery pretreatment unit (20) and thermal-induced imagery comparing unit (30);
Described thermal-induced imagery comparing unit (30) successively gathers for relatively by thermal-induced imagery, gathering module (10), and by thermal-induced imagery pretreatment unit (20), is carried out the gray difference of pretreated refinery installation drawing picture;
THICKNESS CALCULATION unit (40), be connected with thermal-induced imagery comparing unit (30), changes for the thickness distribution of calculating the refinery device according to described gray difference.
2. refinery device thickness detection system according to claim 1, is characterized in that, also comprises storage unit, is connected with described THICKNESS CALCULATION unit (40).
3. refinery device thickness detection system according to claim 1, is characterized in that, described thermal-induced imagery gathers module (10) and comprises first to fourth thermal-induced imagery collecting unit, uniformly-spaced arranges along the circumferencial direction of refinery device.
4. refinery device thickness detection system according to claim 3, is characterized in that, described first to fourth thermal-induced imagery collecting unit adopts USB port to carry out image output.
5. refinery device thickness detection system according to claim 1, is characterized in that, also comprises alarm unit, is connected with described THICKNESS CALCULATION unit (40);
Described THICKNESS CALCULATION unit (40) also, is controlled alarm unit and is reported to the police during lower than lower safety limit be used to the thickness of working as the refinery device calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320187039XU CN203310377U (en) | 2013-04-15 | 2013-04-15 | Refining device thickness detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320187039XU CN203310377U (en) | 2013-04-15 | 2013-04-15 | Refining device thickness detection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676807A (en) * | 2015-12-29 | 2016-06-15 | 中国石油化工股份有限公司 | Optimization system and optimization method for refining device equipment integrity operation window |
| CN111692979A (en) * | 2020-06-17 | 2020-09-22 | 中交一公局厦门工程有限公司 | System and method for detecting height of tunnel secondary lining cloth based on thermal imaging |
| CN113542327A (en) * | 2020-04-17 | 2021-10-22 | 中国石油天然气股份有限公司 | Monitoring device |
| CN113744507A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Infrared standardized intelligent early warning/alarming wireless transmission system of refining device |
-
2013
- 2013-04-15 CN CN201320187039XU patent/CN203310377U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676807A (en) * | 2015-12-29 | 2016-06-15 | 中国石油化工股份有限公司 | Optimization system and optimization method for refining device equipment integrity operation window |
| CN113542327A (en) * | 2020-04-17 | 2021-10-22 | 中国石油天然气股份有限公司 | Monitoring device |
| CN113744507A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Infrared standardized intelligent early warning/alarming wireless transmission system of refining device |
| CN111692979A (en) * | 2020-06-17 | 2020-09-22 | 中交一公局厦门工程有限公司 | System and method for detecting height of tunnel secondary lining cloth based on thermal imaging |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20170415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |