CN108982584A - Electric heating tube internal oxidition magnesium uniformity detection system and method - Google Patents
Electric heating tube internal oxidition magnesium uniformity detection system and method Download PDFInfo
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- CN108982584A CN108982584A CN201810760120.XA CN201810760120A CN108982584A CN 108982584 A CN108982584 A CN 108982584A CN 201810760120 A CN201810760120 A CN 201810760120A CN 108982584 A CN108982584 A CN 108982584A
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Abstract
Include: power supply unit the present invention relates to a kind of electric heating tube internal oxidition magnesium uniformity detection system and method, the detection system, is connected to the both ends of the electric heating tube；Bracket, the electric heating tube are suspended vacantly on the bracket；Thermal imaging system is arranged in parallel with the bracket, and the thermal imaging system is for acquiring temperature information of the electric heating tube on its axis direction；Output equipment is connect with the thermal imaging system, for determining whether the distribution of the electric heating tube internal oxidition magnesium is uniform according to the temperature information.Temperature information on the direction of electric heating tube course of normal operation central axes is directly acquired using thermal imaging system, output equipment is calculated according to temperature information to obtain final testing result, the detection system can quickly and accurately detect the distribution situation of electric heating tube internal oxidition magnesium by thermal imaging means, and then judge that the quality of electric heating tube whether there is defect, while the detection system will not damage the internal structure of electric heating tube.
Description
Technical field
The present invention relates to electric heating tube product quality detection fields, and in particular, to a kind of electric heating tube internal oxidition magnesium is equal
Evenness detection system and method.
Background technique
Heating tube is that (carbon steel pipe, titanium tube, stainless steel tube, copper pipe) is packed into heating wire (ferronickel conjunction in seamless metal pipe
Gold), the draw forms after gap section is filled with thermal conductive resin and the magnesia of insulating properties, is reprocessed into required for user each
Kind shape, therefore, size, uniformity of distribution of magnesia partial size etc. influence the performance of electric heating tube very big.In electric heating
When the manufacture craft and exfactory inspection of pipe to magnesia filling the uniformity have certain requirement, still, due to electric heating tube outside
Portion is wrapped up by metal tube, can not be judged that whether uniformly magnesia be distributed wherein using the means directly observed, be influenced to electricity
The performance evaluation and exfactory inspection of heating tube.
Summary of the invention
The first purpose of the invention is to provide a kind of electric heating tube detection system, which can quickly, accurately
Ground detects distribution situation of the magnesia in electrothermal tube, and will not damage to electric heating tube.
A second object of the present invention is to provide a kind of electric heating tube detection method, mentioned in the detection method comprising the present invention
The electric heating tube detection system of confession.
To achieve the goals above, the present invention provides a kind of electric heating tube internal oxidition magnesium uniformity detection system, comprising: supplies
Electric equipment is connected to the both ends of the electric heating tube；Bracket, the electric heating tube are suspended vacantly on the bracket；Thermal imaging
Instrument is arranged in parallel with the bracket, and the thermal imaging system is used to acquire temperature letter of the electric heating tube on its axis direction
Breath；And output equipment, it is connect with the thermal imaging system, for determining oxygen in the electric heating tube according to the temperature information
Whether the distribution for changing magnesium is uniform.
Optionally, the bracket includes rack body and two support rods being fixed on the rack body, the branch
Strut is formed as Y-shaped structure, and the both ends overlap joint of the electric heating tube is fixed in the opening of the Y-shaped structure upper end, the heat
Imager and rack body parallel arrangement.
Optionally, the spacing between the thermal imaging system and the rack body is equal to the focal length of the thermal imaging system.
Optionally, the power supply unit include uninterruptible power supply for being connected with external power supply and with it is described uninterrupted
The pressure regulator that power supply is connected, the pressure regulator are connected to the both ends of the electric heating tube by wiring.
Optionally, be also connected with the first control piece between the uninterruptible power supply and the pressure regulator, the pressure regulator and
The second control piece is also connected between the electric heating tube, second control piece is connected to the electric heating by the wiring
The both ends of pipe.
According to the second aspect of the invention, a kind of electric heating tube internal oxidition magnesium uniformity detection method is also provided, it is described
Above-mentioned electric heating tube internal oxidition magnesium uniformity detection system is connected on electric heating tube, the detection method includes:
After the electric heating tube is fixed on the bracket, the output voltage of the power supply unit is adjusted to described
The voltage rating of electric heating tube and energization；
After the electric heating tube energization preset time, controls the thermal imaging system and acquire the electric heating tube along its axis
Temperature information on direction；
According to the temperature information, determine whether the distribution of the electric heating tube internal oxidition magnesium is uniform.
Optionally, described according to the temperature information, determine whether the distribution of the electric heating tube internal oxidition magnesium is uniform, wraps
It includes:
According to the temperature information, the temperature of each bringing-up section in the electric heating tube is determined respectively, wherein the electric heating
Pipe is divided into N number of bringing-up section；
Each bringing-up section is ranked up according to the sequence of temperature from high to low, and J bringing-up section in the top is determined
For first object bringing-up section, wherein J/N is greater than or equal to preset ratio threshold value；
According to the temperature of each bringing-up section, determined in the electric heating tube respectively, adjacent position bringing-up section it is long in unit
Temperature difference on degree；
The temperature difference is ranked up according to sequence from big to small, and K temperature difference in the top is respectively right
In the adjacent position bringing-up section the answered, bringing-up section of position rearward is determined as the second target bringing-up section, wherein K/N is greater than
Or it is equal to the preset ratio threshold value；
It will be determined as the heating of third target in the first object bringing-up section, for the bringing-up section of the second target bringing-up section
Section；
According to the quantity of the third target bringing-up section, determine whether the distribution of the electric heating tube internal oxidition magnesium is uniform.
Optionally, the quantity according to the third target bringing-up section determines point of the electric heating tube internal oxidition magnesium
Whether cloth is uniform, comprising:
When the quantity of the third target bringing-up section is greater than preset quantity threshold value, the electric heating tube internal oxidition magnesium is determined
Be unevenly distributed；
When the quantity of the third target bringing-up section is less than or equal to the preset quantity threshold value, the electric heating is determined
Pipe internal oxidition magnesium is evenly distributed.
Optionally, the preset quantity threshold value is set according to N.
Optionally, the method also includes:
It, will be corresponding to the third target bringing-up section when determining when being unevenly distributed of the electric heating tube internal oxidition magnesium
Position is determined as the position unevenly distributed of the electric heating tube internal oxidition magnesium.
Through the above technical solutions, being directly acquired on the direction of electric heating tube course of normal operation central axes using thermal imaging system
Temperature information, output equipment can be calculated and be analyzed the detection to obtain final testing result according to temperature information
System can quickly and accurately detect the distribution situation of electric heating tube internal oxidition magnesium by thermal imaging means, and then judge electricity
The quality of heating tube whether there is defect, while the detection system will not damage the internal structure of electric heating tube.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Fig. 1 is a kind of structural representation of electric heating tube internal oxidition magnesium uniformity detection system shown in an exemplary embodiment
Figure；
Fig. 2 is a kind of process of electric heating tube internal oxidition magnesium uniformity detection method shown according to an exemplary embodiment
Figure.
Fig. 3 is whether a kind of distribution of determining electric heating tube internal oxidition magnesium shown according to an exemplary embodiment is uniform
The flow chart of method.
Fig. 4 is a kind of structural schematic diagram of electric heating tube segmentation shown according to an exemplary embodiment.
Fig. 5 is whether a kind of distribution of the determining electric heating tube internal oxidition magnesium shown according to another exemplary embodiment is uniform
Method flow chart.
Fig. 6 is a kind of stream of the electric heating tube internal oxidition magnesium uniformity detection method shown according to another exemplary embodiment
Cheng Tu.
Description of symbols
1 power supply unit, 2 electric heating tube
3 bracket, 4 thermal imaging system
5 output equipment, 11 uninterruptible power supply
12 pressure regulator, 13 wiring
14 first control piece, 15 second control piece
31 rack body, 32 support rod
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used to limit the scope of the invention.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " on ", "lower", "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, understand above-mentioned term at this as the case may be
Concrete meaning in invention.
As shown in Figure 1, the present invention provides a kind of electric heating tube internal oxidition magnesium uniformity detection system, which includes
Power supply unit 1, bracket 3, thermal imaging system 4 and output equipment 5, wherein power supply unit 1 is connected to the both ends of electric heating tube 2, electricity
Heating tube 2 is suspended vacantly on bracket 3, and thermal imaging system 4 is arranged in parallel with bracket 3, for acquiring electric heating tube 2 along its axis side
Upward temperature information, output equipment 5 are connect with thermal imaging system 4, for determining 2 internal oxidition of electric heating tube according to temperature information
Whether the distribution of magnesium is uniform.It should be noted that the output voltage of power supply unit 1 is adjustable and is equal to electric heating tube 2 to be detected
Voltage rating, the output voltage of power supply unit 1 can be adjusted according to the electric heating tube 2 of different model, guarantees that electric heating tube 2 is normal
Work, output equipment 5 can be the computer being connected with thermal imaging system 4 by USB line, can collect thermal imaging system 4
Infrared temperature figure be transmitted on computer, computer carries out related operation and analysis, and operation result is transmitted to thermal imaging system 4
And it is shown on infrared temperature figure.In addition, electric heating tube 2 is suspended vacantly by bracket 3, thermal imaging system 4 can acquire its axis
The temperature information of any point on line direction, to guarantee the accuracy of temperature information obtained and comprehensive.
Through the above technical solutions, directly acquiring 2 course of normal operation central axes direction of electric heating tube using thermal imaging system 4
On temperature information, output equipment 5 can be calculated and be analyzed the inspection to obtain final testing result according to temperature information
Examining system can quickly and accurately detect the distribution situation of 2 internal oxidition magnesium of electric heating tube by thermal imaging means, and then judge
The quality of electric heating tube 2 whether there is defect, while the detection system will not damage the internal structure of electric heating tube 2.
Bracket 3 can be any suitable structure.In the present invention, as shown in Figure 1, bracket 3 includes 31 He of rack body
Two support rods 32 being fixed on rack body 31, support rod 32 are formed as Y-shaped structure, and the both ends overlap joint of electric heating tube 2 is solid
It is scheduled in the opening of Y-shaped structure upper end, thermal imaging system 4 and rack body 31 are arranged in parallel.In this way, the both ends of electric heating tube 2 can
It is removedly fixed in the opening of Y-shaped structure, it is solid and reliable to be conveniently replaceable, and bracket 3 will not be to effective hair of electric heating tube 2
Thermal region is blocked, and is acquired convenient for thermal imaging system 4 to the temperature on axis direction.In other embodiments, bracket 3
It may also be formed as the suspension hook lifted from top to 2 both ends of electric heating tube, equally can be realized the fixation to electric heating tube 2.
To guarantee that thermal imaging system 4 acquires the accuracy of infrared temperature image, arranging bracket 3 and when thermal imaging system 4, heat at
Focal length as the spacing between instrument 4 and rack body 31 equal to thermal imaging system 4, the infrared detector of thermal imaging system 4 can be just
It is directed at electric heating tube 2, in addition, can fix the position of thermal imaging system 4 when carrying out the arrangement of the detection system, pass through tune
Distance of the rack body 31 relative to thermal imaging system 4 is saved, it is simple to operate.
Power supply unit 1 is directly connected with external power supply, and the single-phase virtual value of external power supply is 110- under normal conditions
220V, the fluctuation range of frequency are 50Hz-60Hz, to guarantee that the output voltage of power supply unit 1 is equal to electric heating tube 2 to be detected
Voltage rating, in the present invention, as shown in Figure 1, power supply unit 1 includes the uninterruptible power supply 11 for being connected with external power supply
The pressure regulator 12 being connected with uninterruptible power supply, pressure regulator 12 are connected to the both ends of electric heating tube 2, pressure regulator by wiring 13
12 can be automatic coupling voltage regulator, and external power supply charges to uninterruptible power supply 11, is full of to 11 stable module of uninterruptible power supply
After electricity, output voltage can be adjusted by automatic coupling voltage regulator, guarantee that output voltage is exactly equal to the specified electricity of electric heating tube 2
Pressure.
Be also connected with the first control piece 14 between uninterruptible power supply 11 and pressure regulator 12, pressure regulator 12 and electric heating tube 2 it
Between be also connected with the second control piece 15, the second control piece 15 is connected to the both ends of electric heating tube 2 by wiring 13.Specifically,
One control piece 14 can be level-one contactor, and the second control piece 15 is Secondary contact device, when being closed level-one contactor, connect outer
Power supply-uninterruptible power supply 11- pressure regulator 12 is connect, after guaranteeing that the output voltage of pressure regulator 12 is equal to the voltage rating of electric heating tube 2,
At this point, can just be closed Secondary contact device, it is powered to electric heating tube 2.In addition, the first controller 14 and second controller 15 are also
Circuit can be cut off in time when causing danger, prevent the generation of safety accident.In other embodiments, the first control piece 14
The switch for control circuit on-off can also be respectively formed as with the second control piece 15.
Fig. 2 is a kind of process of electric heating tube internal oxidition magnesium uniformity detection method shown according to an exemplary embodiment
Figure.As shown in Fig. 2, this method may comprise steps of.
In step 21, after electric heating tube is fixed on the bracket, by the output voltage of power supply unit adjust to
The voltage rating of electric heating tube and energization.
In the present invention, this method can be applied to above-mentioned electric heating tube internal oxidition magnesium uniformity detection system, also, electricity
The electric heating tube internal oxidition magnesium uniformity detection system is connected in heating tube 2.When user needs to detect 2 internal oxidition of electric heating tube
When whether the distribution of magnesium is uniform, which first can be placed on (such as Fig. 1 on the bracket 3 in said detecting system by user
Shown in), and power supply unit 1 is directly connected with external power supply；Later, said detecting system can control the first control piece
14 are closed, and the output voltage of power supply unit 1 is adjusted to the voltage rating of above-mentioned electric heating tube 2, wherein the voltage rating can
To fluctuate within the scope of 110V-220V, illustratively, which is 110V.And it is possible to pass through pressure regulation shown in Fig. 1
Device 12 is by the above-mentioned voltage rating of the voltage regulated value at above-mentioned 2 both ends of electric heating tube.
Meanwhile the output frequency of power supply unit 1 can also be adjusted to the specified of above-mentioned electric heating tube 2 by said detecting system
Frequency, wherein the rated frequency can fluctuate within the scope of 50Hz-60Hz.
Finally, said detecting system can be powered for electric heating tube 2.
Illustratively, it can be closed by the second control piece 15 shown in control figure 1, for the energization of electric heating tube 2.
In step 22, after electric heating tube energization preset time, control thermal imaging system acquisition electric heating tube is along its axis
Temperature information on direction.
In the present invention, for after 2 energization preset time of electric heating tube, control thermal imaging system 4 is acquired in above-mentioned steps 21
Infrared temperature image of the electric heating tube 2 along its axis direction, wherein the infrared temperature image may include along above-mentioned electric heating
The temperature information of any point on 2 axis direction of pipe.Later, which can be by its collected electric heating tube 2 along its axis
Temperature information on line direction is exported to output equipment 5.
In addition, it is necessary to explanation, above-mentioned preset time can be it is set by user, be also possible to default empirical value
(for example, 5min), is not especially limited in the present invention.
In step 23, according to temperature information, determine whether the distribution of electric heating tube internal oxidition magnesium is uniform.
In the present invention, the collected electric heating tube of above-mentioned thermal imaging system 42 is got along its axis side in output equipment 5
After upward temperature information, can determine whether the distribution of 2 internal oxidition magnesium of electric heating tube is uniform according to the temperature information.
Specifically, above-mentioned 2 internal oxidition of electric heating tube can be determined by step 231- step 236 shown in Fig. 3
Whether the distribution of magnesium is uniform.
In step 231, according to temperature information, the temperature of each bringing-up section in electric heating tube is determined respectively.
In the present invention, (as shown in Figure 4, above-mentioned electric heating tube 2 can be divided into N number of bringing-up section according to its axial direction
Electric heating tube 2 includes bringing-up section 20, bringing-up section 21, bringing-up section 22..., bringing-up section 2N-1This N number of bringing-up section), wherein electric heating tube
2 total length is L, then the length l=L/N of each bringing-up section.Specifically, due to any point on 2 axis direction of electric heating tube
Temperature information it is known that be directed to each bringing-up section, can be using the average value of the temperature of each point in the bringing-up section as the bringing-up section
Temperature.
Illustratively, N=300, L=30cm, l=1mm, that is, calculate the temperature of each bringing-up section every 1mm.
In step 232, each bringing-up section is ranked up according to the sequence of temperature from high to low, and by J in the top
A bringing-up section is determined as first object bringing-up section.
In the present invention, J/N is greater than or equal to preset ratio threshold value.N number of bringing-up section is got through the above steps 231
After respective temperature, each bringing-up section can be ranked up according to the sequence of temperature from high to low, it later, can will be in the top
J bringing-up section be determined as first object bringing-up section.
Illustratively, above-mentioned preset ratio threshold value is 5%, N=300, J=60；In this way, being obtained through the above steps 231
To after 300 respective temperature of bringing-up section, which can be ranked up according to the sequence of temperature from high to low,
Later, 60 bringing-up sections in the top can be determined as first object bringing-up section.
Also, in one embodiment, after determining first object bringing-up section, it can place it in set T,
Wherein, set T includes J element.
In step 233, according to the temperature of each bringing-up section, determined in electric heating tube respectively, adjacent position bringing-up section is in list
Temperature difference on bit length.
In the present invention, above-mentioned adjacent position bringing-up section refers in above-mentioned electric heating tube 2, two that position is adjacent heat
Section, illustratively, as shown in Figure 4, bringing-up section 22With bringing-up section 21For adjacent position bringing-up section, bringing-up section 2N-1With bringing-up section 2N-2
For adjacent position bringing-up section.After the temperature that through the above steps 232 determine each bringing-up section, any two can be determined respectively
The temperature difference of adjacent position bringing-up section according to the temperature difference of the adjacent position bringing-up section, determines the temperature in unit length later
Difference.
Illustratively, temperature difference of the adjacent position bringing-up section in unit length can be determined by following equation (1):
Wherein, Δ TnFor bringing-up section 2nWith bringing-up section 2n-1Temperature difference in unit length；L is the length of bringing-up section；tn
For bringing-up section 2nTemperature；tn-1For bringing-up section 2n-1Temperature；N=1,2 ..., N-1.
In step 234, temperature difference is ranked up according to sequence from big to small, and by K temperature in the top
In the corresponding adjacent position bringing-up section of the difference, bringing-up section of position rearward is determined as the second target bringing-up section.
In the present invention, K/N is greater than or equal to above-mentioned preset ratio threshold value.N-1 are determined through the above steps 233
After temperature difference, which can be arranged according to sequence from big to small, later, by K temperature in the top
In the corresponding adjacent position bringing-up section of the degree difference, bringing-up section (that is, the biggish bringing-up section of subscript in Fig. 4) of position rearward is really
It is set to the second target bringing-up section.
Illustratively, above-mentioned preset ratio threshold value is 5%, N=100, K=5；In this way, being got through the above steps 233
After 99 temperature differences, which can be ranked up according to sequence from high to low, later, ranking can be obtained and leaned on
5 preceding temperature differences, wherein the corresponding adjacent position bringing-up section of 5 temperature differences in the top is respectively bringing-up section
21With bringing-up section 22, bringing-up section 26With bringing-up section 27, bringing-up section 218With bringing-up section 219, bringing-up section 241With bringing-up section 242, bringing-up section
289With bringing-up section 290, in this way, can be by bringing-up section 22, bringing-up section 27, bringing-up section 219, bringing-up section 242, bringing-up section 290It is determined as
Two target bringing-up sections.
Again illustratively, above-mentioned preset ratio threshold value is 5%, N=300, K=15；In this way, being obtained through the above steps 233
After getting 299 temperature differences, which can be ranked up according to sequence from high to low, later, can will be arranged
In the forward corresponding adjacent position bringing-up section of 15 temperature differences of the name, bringing-up section of position rearward is determined as the second target
Bringing-up section.
Also, in one embodiment, it can be placed it in set V after determining the second target bringing-up section,
Wherein, set V includes K element.
In addition, it is necessary to explanation, above-mentioned preset ratio threshold value, K, J may each be value set by user, be also possible to write from memory
The empirical value recognized, illustratively, above-mentioned preset ratio threshold value are defaulted as 5%, also, K, J can be equal or be differed, at this
It is not especially limited in invention.
In this step 235, third target will be determined as in first object bringing-up section, for the bringing-up section of the second target bringing-up section
Bringing-up section.
After first object bringing-up section, the second target bringing-up section are determined in through the above steps 232 and step 234 respectively,
It can will be determined as third target bringing-up section in first object bringing-up section, for the bringing-up section of the second target bringing-up section.
In one embodiment, as described above, the first object bringing-up section that above-mentioned steps 232 are determined is placed on collection
It closes in T, the second target bringing-up section that above-mentioned steps 234 are determined is placed in set V, then, and the intersection B of set T and set V
In all bringing-up sections be third target bringing-up section.
Illustratively, T={ bringing-up section 21, bringing-up section 26, bringing-up section 27, bringing-up section 242, bringing-up section 290, V={ bringing-up section 22、
Bringing-up section 27, bringing-up section 219, bringing-up section 242, bringing-up section 290, then B=T ∩ V={ bringing-up section 27, bringing-up section 242, bringing-up section
290, that is, it can be by bringing-up section 27, bringing-up section 242With bringing-up section 290Determine third target bringing-up section.
In another embodiment, it can be filtered out from the first object bringing-up section that above-mentioned steps 232 are determined same
When belong to the bringing-up section of the second target bringing-up section, and as third target bringing-up section.
Illustratively, first object bringing-up section includes bringing-up section 21, bringing-up section 26, bringing-up section 27, bringing-up section 242, bringing-up section
290, bringing-up section 292, bringing-up section 2100, the second target bringing-up section includes bringing-up section 22, bringing-up section 27, bringing-up section 219, bringing-up section 242、
Bringing-up section 290, then the bringing-up section 2 in first object bringing-up section7, bringing-up section 242With bringing-up section 290It is also the second target bringing-up section,
It therefore, can be by bringing-up section 27, bringing-up section 242With bringing-up section 290It is determined as third target bringing-up section.
Fig. 3 is returned, in step 236, according to the quantity of third target bringing-up section, determines point of electric heating tube internal oxidition magnesium
Whether cloth is uniform.
In the present invention, after through the above steps 235 determine third target bringing-up section, third target can be counted and added
The quantity of hot arc according to the quantity of the third target bringing-up section, determines whether the distribution of 2 internal oxidition magnesium of electric heating tube is equal later
It is even.
In one embodiment, it is default can first to determine whether the quantity of third target bringing-up section and the ratio of N are greater than
Fractional threshold determines whether the distribution of 2 internal oxidition magnesium of electric heating tube is uniform according to the judgement result later.Specifically, when
When the quantity of third target bringing-up section and the ratio of N are greater than above-mentioned default fractional threshold, oxygen in above-mentioned electric heating tube 2 can be determined
Change being unevenly distributed for magnesium；And when the ratio of the quantity of third target bringing-up section and N are less than or equal to above-mentioned default fractional threshold
When, it can determine being evenly distributed for above-mentioned 2 internal oxidition magnesium of electric heating tube.
Wherein, above-mentioned default fractional threshold can be value set by user, be also possible to default empirical value (for example,
4%) it, is not especially limited in the present invention.
In another embodiment, it can first determine whether the quantity of third target bringing-up section is greater than preset quantity threshold
Value, later, determines whether the distribution of 2 internal oxidition magnesium of electric heating tube is uniform according to the judgement result.Specifically, can pass through
Whether step 2361- step 2364 shown in Fig. 5 is uniform come the distribution for determining 2 internal oxidition magnesium of electric heating tube.
In step 2361, determine whether the quantity of third target bringing-up section is greater than preset quantity threshold value.
In the present invention, which can be the number for the bringing-up section that user includes according to above-mentioned electric heating tube 2
The size setting of N is measured, for example, the preset quantity threshold value is [4%N], is also possible to the empirical value of default, in the present invention not
Make specific limit.
Specifically, when the quantity of third target bringing-up section is greater than above-mentioned preset quantity threshold value, following steps are executed
2362；When the quantity of third target bringing-up section is less than or equal to above-mentioned preset quantity threshold value, following steps 2363 are executed.
In step 2362, being unevenly distributed for electric heating tube internal oxidition magnesium is determined.
In step 2363, being evenly distributed for electric heating tube internal oxidition magnesium is determined.
Fig. 6 is a kind of electric heating tube internal oxidition magnesium uniformity detection method shown according to another exemplary embodiment.Such as
Shown in Fig. 6, the above method can also include the following steps.
In step 24, when determining when being unevenly distributed of electric heating tube internal oxidition magnesium, each third target can be heated
Position corresponding to section is determined as the position unevenly distributed of electric heating tube internal oxidition magnesium.
In the present invention, when being unevenly distributed of 2 internal oxidition magnesium of electric heating tube is determined in above-mentioned steps 236, can incite somebody to action
Position corresponding to each third target bringing-up section is determined as the position unevenly distributed of electric heating tube internal oxidition magnesium.In this way, with
Family can be lifting electrical heating pipe with the position unevenly distributed of 2 internal oxidition magnesium of timely learning electric heating tube, convenient for searching reason
Quality provide foundation.
The position unevenly distributed of 2 internal oxidition magnesium of electric heating tube is intuitively understood in addition, understanding to easily facilitate user
It sets, the stepwise schematic views for each third target bringing-up section electric heating tube 2 shown in Fig. 4 that above-mentioned steps 236 can be determined
In highlight (for example, being highlighted).
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of electric heating tube internal oxidition magnesium uniformity detection system characterized by comprising
Power supply unit (1), is connected to the both ends of the electric heating tube (2)；
Bracket (3), the electric heating tube (2) are suspended vacantly on the bracket (3)；
Thermal imaging system (4) is arranged in parallel with the bracket (3), and the thermal imaging system (4) is for acquiring the electric heating tube (2)
Temperature information on its axis direction；And output equipment (5), it is connect with the thermal imaging system (4), for according to the temperature
Information is spent, determines whether the distribution of the electric heating tube (2) internal oxidition magnesium is uniform.
2. electric heating tube internal oxidition magnesium uniformity detection system according to claim 1, which is characterized in that the bracket
It (3) include rack body (31) and two support rods (32) being fixed on the rack body (31), the support rod (32)
Be formed as Y-shaped structure, the both ends overlap joint of the electric heating tube (2) is fixed in the opening of the Y-shaped structure upper end, the heat at
As instrument (4) and the rack body (31) are arranged in parallel.
3. electric heating tube internal oxidition magnesium uniformity detection system according to claim 2, which is characterized in that the thermal imaging
Spacing between instrument (4) and the rack body (31) is equal to the focal length of the thermal imaging system (4).
4. electric heating tube internal oxidition magnesium uniformity detection system according to claim 1, which is characterized in that the power supply is set
Standby (1) include for being connected with external power supply uninterruptible power supply (11) and the pressure regulator that is connected with the uninterruptible power supply
(12), the pressure regulator (12) is connected to the both ends of the electric heating tube (2) by wiring (13).
5. electric heating tube internal oxidition magnesium uniformity detection system according to claim 4, which is characterized in that described uninterrupted
It is also connected between power supply (11) and the pressure regulator (12) the first control piece (14), the pressure regulator (12) and the electric heating
It is also connected with the second control piece (15) between pipe (2), second control piece (15) is connected to described by the wiring (13)
The both ends of electric heating tube (2).
6. a kind of electric heating tube internal oxidition magnesium uniformity detection method, which is characterized in that be connected with basis on the electric heating tube
Electric heating tube internal oxidition magnesium uniformity detection system of any of claims 1-5, the detection method include:
After the electric heating tube (2) is fixed on the bracket (3), the output voltage of the power supply unit (1) is adjusted
Voltage rating and energization to the electric heating tube (2)；
After the electric heating tube (2) energization preset time, controls the thermal imaging system (4) and acquire electric heating tube (2) edge
Temperature information on its axis direction；
According to the temperature information, determine whether the distribution of the electric heating tube (2) internal oxidition magnesium is uniform.
7. electric heating tube internal oxidition magnesium uniformity detection method according to claim 6, which is characterized in that described according to institute
Temperature information is stated, determines whether the distribution of the electric heating tube (2) internal oxidition magnesium is uniform, comprising:
According to the temperature information, the temperature of each bringing-up section in the electric heating tube (2) is determined respectively, wherein the electric heating
Pipe (2) is divided into N number of bringing-up section；
Each bringing-up section is ranked up according to the sequence of temperature from high to low, and J bringing-up section in the top is determined as
One target bringing-up section, wherein J/N is greater than or equal to preset ratio threshold value；
According to the temperature of each bringing-up section, determined in the electric heating tube (2) respectively, adjacent position bringing-up section is in unit length
On temperature difference；
The temperature difference is ranked up according to sequence from big to small, and K temperature difference in the top is corresponding
In the adjacent position bringing-up section, bringing-up section of position rearward is determined as the second target bringing-up section, wherein K/N is greater than or waits
In the preset ratio threshold value；
It will be determined as third target bringing-up section in the first object bringing-up section, for the bringing-up section of the second target bringing-up section；
According to the quantity of the third target bringing-up section, determine whether the distribution of the electric heating tube (2) internal oxidition magnesium is uniform.
8. electric heating tube internal oxidition magnesium uniformity detection method according to claim 7, which is characterized in that described according to institute
The quantity for stating third target bringing-up section determines whether the distribution of the electric heating tube (2) internal oxidition magnesium is uniform, comprising:
When the quantity of the third target bringing-up section is greater than preset quantity threshold value, the electric heating tube (2) internal oxidition magnesium is determined
Be unevenly distributed；
When the quantity of the third target bringing-up section is less than or equal to the preset quantity threshold value, the electric heating tube is determined
(2) internal oxidition magnesium is evenly distributed.
9. electric heating tube internal oxidition magnesium uniformity detection method according to claim 8, which is characterized in that the present count
Amount threshold value is set according to N.
10. electric heating tube internal oxidition magnesium uniformity detection method, feature according to any one of claim 7-9 exist
In, the method also includes:
It, will be corresponding to the third target bringing-up section when determining when being unevenly distributed of the electric heating tube (2) internal oxidition magnesium
Position is determined as the position unevenly distributed of the electric heating tube (2) internal oxidition magnesium.
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| CN201810760120.XA CN108982584B (en) | 2018-07-11 | 2018-07-11 | System and method for detecting uniformity of magnesium oxide in electric heating pipe |
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| CN201810760120.XA CN108982584B (en) | 2018-07-11 | 2018-07-11 | System and method for detecting uniformity of magnesium oxide in electric heating pipe |
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| JP3173367B2 (en) * | 1996-04-09 | 2001-06-04 | 日立プラント建設株式会社 | How to detect the inner surface state of the DUT |
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| CN108982584B (en) | 2020-11-06 |
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