CN106837281A - Heating early warning method and device for electric heating cable - Google Patents
Heating early warning method and device for electric heating cable Download PDFInfo
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- CN106837281A CN106837281A CN201611021070.0A CN201611021070A CN106837281A CN 106837281 A CN106837281 A CN 106837281A CN 201611021070 A CN201611021070 A CN 201611021070A CN 106837281 A CN106837281 A CN 106837281A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 92
- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 6
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- 238000004364 calculation method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000005293 physical law Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- General Induction Heating (AREA)
Abstract
The embodiment of the application provides a heating early warning method and device for an electric heating cable, wherein the method comprises the following steps: acquiring the size parameter of a roller wound by an electric heating cable, the quality of the roller, the number of turns of the electric heating cable wound on the roller and the current parameter of the electric heating cable; determining the heat productivity of the roller according to the size parameter, the number of turns and the current parameter; acquiring the temperature increment of the roller according to the heat productivity and the quality of the roller; and judging whether the temperature increment reaches a preset early warning temperature value or not, and if so, sending an early warning signal. The embodiment of the application can provide scientific and reasonable guidance in safe production.
Description
Technical field
The application is related to oil field development art field, more particularly, to a kind of heating method for early warning of electric heating cable
And device.
Background technology
At present, as viscous crude, super-viscous oil, solidifying oil high are continually developed, electrical heating method is in combustion in situ electric ignition, pit shaft
Extensive use in the oil well operations such as viscosity reduction (de-plugging), pit shaft Paraffin Removal, it regulates and controls convenient with heating power, job execution in time,
It is safe and reliable and extensively welcome by scene.Current electrical heating mainly realizes that conventional electric heating cable is main by electric heating cable
Including two kinds of electric heating and coiled tubing.Wherein, electric heating is mainly used in combustion in situ electric ignition and hollow stem electricity adds
Hanker；Coiled tubing is mainly used in viscosity reducing (de-plugging) and pit shaft Paraffin Removal.
Generally electric heating cable is wrapped on metal roller, when using, by straight hollow oil pick-up tube under electric heating cable,
Logical upper alternating current is heated.Because the fluid properties of oil well differ greatly, heat penetration is also not quite similar, therefore, each
During operation, federation's remainder cable on roller.In heating running, remaining electric heating cable or its roller for being wound
On can produce heat, cause temperature to raise, bring hidden danger to safety in production.
The content of the invention
The purpose of the embodiment of the present application is the heating method for early warning and device for providing a kind of electric heating cable, can be in peace
Scientific and reasonable guidance is provided in full production.
To reach above-mentioned purpose, the embodiment of the present application provides a kind of heating method for early warning of electric heating cable, the method
Including：
Dimensional parameters, the quality of the roller, the electric heating of the roller that electric heating is wound are obtained described
The number of turn and the current parameters of the electric heating wound on roller；
The caloric value of the roller is determined according to the dimensional parameters, the number of turn and the current parameters；
According to the caloric value and the quality of the roller, the temperature increment of the roller is obtained；
Judge whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then send early warning letter
Number.
The embodiment of the present application additionally provides a kind of roller heating prior-warning device of electric heating cable, for instructing safe life
Produce, the device includes：
Parameter acquisition module, dimensional parameters, the quality of the roller, institute for obtaining the roller that electric heating is wound
State the current parameters of the number of turn that electric heating winds on which cylinder and the electric heating；
Heat determining module, for determining the rolling according to the dimensional parameters, the number of turn and the current parameters
The caloric value of cylinder；
Temperature increment determining module, for the quality according to the caloric value and the roller, obtains the roller
Temperature increment；
Judge module, for judging whether the temperature increment has reached default early warning temperature value, if the determination result is YES,
Then send early warning signal.
The embodiment of the present application additionally provides the heating method for early warning of another electric heating cable, and the method includes：
Obtain coiled tubing quality and length, and the coiled tubing current parameters；
The caloric value of the coiled tubing is determined according to the length, and the current parameters；
According to the caloric value and quality, the temperature increment of the coiled tubing is obtained；
Judge whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then send early warning letter
Number.
The embodiment of the present application additionally provides the heating prior-warning device of another electric heating cable, and the device includes
The current parameters of parameter acquisition module, quality and length for obtaining coiled tubing, and the coiled tubing；
Heat determining module, for determining the heating of the coiled tubing according to the length, and the current parameters
Amount；
Temperature increment determining module, for according to the caloric value and quality, obtaining the temperature increment of the coiled tubing；
Judge module, for judging whether the temperature increment has reached default early warning temperature value, if the determination result is YES,
Then send early warning signal.
The technical scheme provided from above the embodiment of the present application, the embodiment of the present application is using process by calculating
The caloric value of middle heat generating components, obtains because heating causes the temperature of heat generating components rising.The heat generating components refer to electric heating or
Person its winding roller.Judge whether the temperature of the rising has reached default early warning temperature again, if the determination result is YES then send
Corresponding early warning signal, so as to provide scientific and reasonable guidance in safety in production.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present application, constitutes the embodiment of the present application
A part, does not constitute the restriction to the embodiment of the present application.In the accompanying drawings：
Fig. 1 is a kind of schematic flow sheet of the heating method for early warning of electric heating cable of the embodiment of the present application；
Fig. 2 is the armored cable structural representation of the embodiment of the present application；
Fig. 3 is the roller profile for being wound with armored cable of the embodiment of the present application；
Fig. 4 is current diagram of inducting in roller in Fig. 3 of the embodiment of the present application；
Fig. 5 is a kind of heating prior-warning device schematic diagram of electric heating cable of the embodiment of the present application；
Fig. 6 is the schematic flow sheet of the heating method for early warning of another electric heating cable of the embodiment of the present application；
Fig. 7 is the coiled tubing structural representation of the embodiment of the present application；
Fig. 8 is the roller profile for being wound with coiled tubing of the embodiment of the present application；
Fig. 9 is the heating prior-warning device schematic diagram of another electric heating cable of the embodiment of the present application.
Specific embodiment
For the purpose, technical scheme and advantage for making the embodiment of the present application become more apparent, with reference to embodiment and attached
Figure, is described in further details to the embodiment of the present application.Here, the schematic description and description of the embodiment of the present application is used for
The embodiment of the present application is explained, but is not intended as the restriction to the embodiment of the present application.
Below in conjunction with the accompanying drawings, the specific embodiment to the embodiment of the present application is described in further detail.
Fig. 1 show a kind of schematic flow sheet of the heating method for early warning of electric heating cable of the embodiment of the present application, such as Fig. 1 institutes
Show that a kind of heating method for early warning of electric heating cable may comprise steps of.
S101, the dimensional parameters of the roller that acquisition electric heating is wound, the quality of the roller, the electric heating exist
The number of turn and the current parameters of the electric heating wound on the roller.
In the application each embodiment, described electric heating is the electric heating of remainder on roller, does not include,
Under to the electric heating in well.The electric heating can include two kinds of armouring and non-armouring again.Wherein, armouring electric heating knot
Structure as shown in Fig. 2 armouring electric heating include plain conductor, insulating barrier is wound with outside wire, also have one in the outside of insulating barrier
Individual armored protective layer.The usual armored protective layer is made up of stainless steel steel wire, and internal structure is shielded.Unarmored electricity
Cable includes plain conductor, and insulating barrier is wound with outside wire.
In one embodiment of the application, the current parameters can be the amplitude of AC current.The size ginseng
Number can be the inner and outer diameter number of the roller, and the length for being wound with the roller of the electric heating cable.
In another implementation method of the application, the electric heating cable for using is electric heating.Now, the electric current ginseng
Number can include：The frequency and virtual value of electric current in the electric heating.The relatively good measurement of virtual value of electric current, therefore select here
Use virtual value.The dimensional parameters can include：The diameter of the roller, the roller wall thickness of the roller is wound with described
The length of the roller of electric heating.
In one embodiment of the application, the quality for obtaining roller can be obtained by the sizecalculation of roller.
For example, roller wall thickness is δ (m), a diameter of D of roller0M (), the length for being wound with the roller of electric heating cable is L0(m), then
The quality m of roller is：M=ρ0·π·D0·δ·L0.Wherein ρ0Represent the density of roller material.
S102, the caloric value of the roller is determined according to the dimensional parameters, the number of turn, and the current parameters.
In an implementation method of the application, the electric heating cable for using is electric heating.During heating, on electric heating
Alternating current is connected with, the roller of electric heating is wound with now equivalent to an energization solenoid, the drums inside can be produced inducts
Electromotive force, and roller constitutes a closed-loop path, has induced current and passes through inside it, and the electric heating wound on roller
Mainly play wire, roller now is exactly a heat generating components.
By the dimensional parameters, the number of turn, and the current parameters, the hair that below equation is calculated the roller is brought into
Heat,
In formula, W represents t0The hot merit produced on the roller in time, N represents the electric heating wound on the roller
The number of turn, D0The diameter of the roller is represented, δ represents the roller wall thickness of the roller, and f represents electric current in the electric heating
Frequency, μ represents the magnetic conductivity of air dielectric, and ρ represents the resistivity of roller material, L0Expression is wound with the electric heating
The length of roller, I represents the effective current value of electric current in the electric heating cable.
In above-mentioned implementation method, the quantum chemical method roller heat condition of electric heating cable can rationally be instructed for follow-up
Safety is raw to provide basis.
S103, according to the caloric value and the quality of the roller, obtains the temperature increment of the roller.
In an implementation method of the application, the temperature increment of the roller can be calculated according to below equation, now
Temperature increment process is calculated in order to simplify, does not consider that roller outwards radiates.
W=cm Δs T
In formula, c represents the specific heat capacity of roller material, and m represents the quality of the roller, and m can be according to the chi of heat generating components
Very little data and density are calculated, and Δ T represents the increment of the heat generating components temperature.
S104, judges whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then sends pre-
Alert signal.
Embodiment as shown in Figure 1 understands that the embodiment of the present application is by calculating heat generating components roller in use
Caloric value, obtains because heating heat generating components is increased temperature, then judge the rising temperature whether reached it is default pre-
Alert temperature, if the determination result is YES then sends corresponding early warning signal, so as to provide scientific and reasonable guidance in safety in production.
In one embodiment of the application, the electric heating cable for using is electric heating, and the heating cable is armouring electricity
Cable.The profile for being wound with the roller of cable is as shown in Figure 3.Roller wall thickness is δ (m), a diameter of D of roller in Fig. 30(m),
The length for being wound with the roller of electric heating is L0M (), the cable number of turn wound in roller is N.During heating, it is connected with cable
Frequency is the alternating current of f, and the electric current is for sinusoidal ac and virtual value is I (A), and amplitude is Im。
Be wound with the roller of remaining armored cable on logical after alternating current equivalent to an energization solenoid.According to farad
The law of electromagnetic induction understands, now, on roller has induced electromotive force and produce, and the roller of closure constitutes loop, has
Induced current passes through, and as shown in phantom in Figure 4, Fig. 4 is the side view of roller to the sense of current.
The magnetic induction density B that magnetic field is formed in roller is as follows：
In formula, μ represents the magnetic conductivity of the air dielectric, and i represents the electric current in remaining cable.Assuming that the table of the alternating current
It is as follows up to formula：
I=Im sinωt (2)
Then have,And ω=2 π f.
The magnetic flux phi that surrounds in area of closed-loop path that roller is formed is：
Φ=BS (3)
In formula, S represents that roller forms the area that loop is surrounded.
Induced current on roller can be expressed as：
In formula, R represents the axial AC resistance of roller.
In formula, ρ represents the resistivity of roller material.
In summary (1) to (6) can obtain,
OrderThen have,
Ii=Iim cosωt (8)
Roller heating power P be：
In time t0It is interior due to roller as follows, the unit J that sends out heat W thermogenetic,
China ac frequency f=50Hz, and 0≤sin2 ω t0≤ 1, thenCan
To ignore.So have,
Each variable will be substituted into formula (11), can obtained,
Caloric value on roller is calculated according to above formula (12), then obtains the elevated temperature of roller, whether judge the increment
Default early warning temperature value has been reached, if being judged as YES, early warning signal has been sent.
In the present embodiment, it has been derived by under electric heating mode of heating according to physical law, roller is by heating institute
The computing formula of the energy of generation, roller just can be clearly calculated according to this formula and sends out heat thermogenetic.
In an implementation method of the application, the formula (12) in above example has been calculated the hair of roller
Thermogenetic heat, is calculated because heating causes the elevated temperature of roller further according to below equation.
W=cm Δs T (13)
In formula, c represents the specific heat capacity of the roller material, and unit is J/ (kg DEG C)；M represents the quality of the roller,
Unit is kg, can be calculated according to the density of roller material and sized data；Δ T represents the shown elevated temperature of the roller
Degree, unit DEG C；W is represented and is sent out heat, unit J thermogenetic on roller.
Δ T is compared with default early warning temperature again, in a specific embodiment of the application, presets early warning temperature
It is 40 DEG C, when Δ T reaches 40 DEG C, will now brings hidden danger to safety in production, then needs to send early warning signal, so as to operation
Personnel take Forewarning Measures.It is on the ground that Forewarning Measures can be that the cable that will be wrapped on roller is spread out, it is to avoid on roller
Form closure solenoid and produce induced current.
In the present embodiment, according to sending out heat thermogenetic, obtained roller due to elevated temperature of generating heat, by this
Temperature is compared with default early warning temperature, judges whether to have reached default early warning temperature.Operating personnel is reminded to take early warning to arrange
Apply.If at the very start spreading the cable on roller out on the ground, very big floor area can be occupied, so as to influence normal life
Produce.The technical scheme provided according to the present embodiment just can judge whether to need to take early warning according to the roller elevated temperature of heating
Operation, so as to instruct rationally to instruct safety in production.
A kind of heating prior-warning device of electric heating cable is additionally provided in the embodiment of the present application, such as the following examples institute
State.Because the principle of the device solve problem and a kind of heating method for early warning of electric heating cable are similar, thus the device reality
A kind of implementation of the heating method for early warning that may refer to electric heating cable is applied, part is repeated and is repeated no more.
As shown in figure 5, in one embodiment of the application, a kind of heating prior-warning device of electric heating cable can be wrapped
Include,
Parameter acquisition module 501, the matter for obtaining the dimensional parameters of the roller that electric heating is wound, the roller
The current parameters of amount, the number of turn that the electric heating winds on which cylinder and the electric heating.
Heat Calculation module 502, for determining institute according to the dimensional parameters, the number of turn and the current parameters
State the caloric value of roller.
Temperature acquisition module 503, for the quality according to the caloric value and the roller, obtains the temperature of the roller
Degree increment.
Judge module 504, for judging whether the temperature increment has reached default early warning temperature value, if judged result is
It is then to send early warning signal.
From the embodiment of said apparatus, the embodiment of the present application is by calculating heat generating components roller in use
Caloric value, obtains because heating heat generating components is increased temperature, then judge the rising temperature whether reached it is default pre-
Alert temperature, if the determination result is YES then sends corresponding early warning signal, so as to provide scientific and reasonable guidance in safety in production.
As shown in fig. 6, the embodiment of the present application additionally provides the heating method for early warning of another electric heating cable, methods described
Can include：
The current parameters of S601, the quality and length of acquisition coiled tubing, and the coiled tubing.
In the application each embodiment, described coiled tubing is the coiled tubing of remainder on roller, does not include,
Under in well.The coiled tubing structure is as shown in Figure 7.As shown in Figure 7, coiled tubing is to be enclosed with insulating barrier by one
Plain conductor be placed in coiled tubing, coiled tubing is made usually using stainless steel.During heating, plain conductor in Fig. 7 with
Peripheral coiled tubing is connected, and forms closed-loop path.
In one embodiment of the application, the quality for obtaining coiled tubing can be by the coiled tubing Size calculation
Obtain.For example, the length of the coiled tubing on roller is L, the density of coiled tubing is ρ0, a diameter of D of coiled tubingg.Example
Such as, the length of the coiled tubing on roller is L, and the density of coiled tubing is ρ0, a diameter of D of coiled tubingg, then coiled tubing
Quality m be：
Because coiled tubing is built with wire lead insulation material etc., so general ρ here0Can be apparent density or synthesis
Commonly use line density to represent in density, scene.In the application one embodiment, ρ0The quality of unit length is expressed as, then continuously
The quality m of oil pipe is：M=ρ0·L。
In one embodiment of the application, the current parameters of the coiled tubing can be alternating current in coiled tubing
Virtual value, obtain certainly electric current in the coiled tubing amplitude can also, obtain in coiled tubing electricity further according to magnitude determinations
The virtual value of stream.
S602, the caloric value of the coiled tubing is determined according to the length, and the current parameters.
In an implementation method of the application, the electric heating cable for using is coiled tubing.During heating, such as institute in Fig. 7
Show, wire can form closed-loop path with outer ring coiled tubing, and the sense of current conversely, will not now be produced on roller induct it is electronic
Gesture, but now coiled tubing inherently generates heat, therefore heat generating components is coiled tubing.
By the length, and the current parameters, the caloric value that below equation is calculated the coiled tubing is brought into,
W=rLI2·t0
In formula, W represents t0In time on the coiled tubing produce hot merit, L represent on the roller wind it is continuous
The length of oil pipe, I represents the virtual value of electric current in the coiled tubing, and r represents the impedance in coiled tubing unit length.
S603, according to the caloric value and quality, obtains the temperature increment of the coiled tubing.
In an implementation method of the application, the temperature increment of coiled tubing can be calculated according to below equation,
W=cm Δs T
In formula, c represents the specific heat capacity of coiled tubing material, and m represents the quality of the coiled tubing, and m can be according to continuous
The sized data and density of oil pipe are calculated, and Δ T represents the temperature increment of the coiled tubing.
S604, judges whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then sends pre-
Alert signal.
Embodiment as shown in Figure 6 understands that the embodiment of the present application is continuously oily by calculating heat generating components in use
The caloric value of pipe, obtain because heating cause heat generating components rise temperature, then judge the rising temperature whether reached it is pre-
If early warning temperature, corresponding early warning signal is if the determination result is YES then sent, so as to provide scientific and reasonable in safety in production
Instruct.
In an implementation method of the application, the electric heating cable for being used is coiled tubing.The construction of coiled tubing
As shown in Figure 7.During heating, both without electric field or without magnetic field outside coiled tubing, induced current will not be formed.But coiled tubing itself
It is exactly a heater, can also generates heat, so that bowl temperature is raised.
The roller profile for being wound with coiled tubing is as shown in Figure 8.As shown in Figure 8, roller wall thickness is δ (m), roller
A diameter of D0M (), the length of the coiled tubing being wrapped on roller is L (m).Coiled tubing is wound with n altogether on roller
Layer.The alternating current that frequency is f is connected with during heating, in cable, the electric current is for sinusoidal ac and virtual value is I (A), and amplitude is
Im。
The heating power of coiled tubing is P, and unit is watt (w),
In formula, RgThe resistance of the coiled tubing on roller is represented, unit is Ω.
In t0In time, the hot merit W that electrical heating is produced on the coiled tubing on roller is as follows, and unit is J,
Have again, Rg=rL, andR represents the impedance (unit Ω/m) in coiled tubing unit length, then have：
W=rLI2·t0 (16)
In a specific embodiment of the application, the number of turn of i-th layer of upper coiled tubing is N on rolleri, wherein i=1,
2…n.The impedance of remaining coiled tubing unit length is r, unit Ω/m, can be measured by experiment.Then remaining company on roller
The resistance R of continuous oil pipeg(Ω) can be expressed as,
In formula, as shown in Figure 8, DgM () is the diameter of remaining coiled tubing on roller.
Bring formula (17) into formula (16), then can obtain,
Caloric value on coiled tubing is calculated according to above formula (18), heat causes that its temperature is raised on coiled tubing, then sentences
It is disconnected to rise whether high-temperature has reached default early warning temperature, if so, then need to send early warning signal, so that operating personnel takes pre-
Alert measure.
In the present embodiment, it has been derived by under electric heating mode of heating according to physical law, it is remaining continuous on roller
Oil pipe is due to the computing formula of the energy produced by heating, and the residue that just can be clearly calculated according to this formula on roller is continuous
Oil pipe sends out heat thermogenetic.
In an implementation method of the application, the formula (18) in above example has been calculated on roller
Coiled tubing sends out heat thermogenetic, then can be calculated because heating causes the elevated temperature of coiled tubing according to below equation
Degree.
W=cm Δs T (19)
In formula, c represents the specific heat capacity of coiled tubing material, and unit is J/ (kg DEG C)；M represents the matter of the coiled tubing
Amount, unit is kg, can be calculated according to the size of the coiled tubing on roller and density；Δ T represents shown described continuous
Oil pipe temperature increment, unit DEG C；The coiled tubing that W represents on roller sends out heat, unit J thermogenetic.
Δ T is compared with default early warning temperature again, in a specific embodiment of the application, presets early warning temperature
It is 40 DEG C, when Δ T reaches 40 DEG C, will now brings hidden danger, it is necessary to send early warning signal to safety in production.
In the present embodiment, according to sending out heat thermogenetic, obtained coiled tubing on roller because heating is raised
Temperature, this temperature is compared with default early warning temperature.
The heating prior-warning device of another electric heating cable is additionally provided in the embodiment of the present application, such as the following examples institute
State.Because the principle of the device solve problem and a kind of heating method for early warning of electric heating cable are similar, thus the device reality
A kind of implementation of the heating method for early warning that may refer to electric heating cable is applied, part is repeated and is repeated no more.
As shown in figure 9, in one embodiment of the application, a kind of heating prior-warning device of electric heating cable can be wrapped
Include,
The electric current ginseng of parameter acquisition module 901, quality and length for obtaining coiled tubing, and the coiled tubing
Number.
Heat determining module 902, for determining the hair of the coiled tubing according to the length, and the current parameters
Heat.
Temperature increment determining module 903, for according to the caloric value and quality, the temperature for obtaining the coiled tubing to increase
Amount.
Judge module 904, for judging whether the temperature increment has reached default early warning temperature value, if judged result is
It is then to send early warning signal.
From the embodiment of said apparatus, the embodiment of the present application is continuously oily by calculating heat generating components in use
The caloric value of pipe, obtain because heating cause heat generating components rise temperature, then judge the rising temperature whether reached it is pre-
If early warning temperature, corresponding early warning signal is if the determination result is YES then sent, so as to provide scientific and reasonable in safety in production
Instruct.
In one or more exemplary designs, above-mentioned functions described by the embodiment of the present application can be in hardware, soft
Any combination of part, firmware or this three is realized.If realized in software, these functions can be stored and computer-readable
On medium, or it is transmitted on the medium of computer-readable with one or more instructions or code form.Computer readable medium includes electricity
Brain stores medium and is easy to so that allowing computer program to be transferred to other local telecommunication medias from a place.Storage medium can be with
It is that any general or special computer can be with the useable medium of access.For example, such computer readable media can include but
RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk storage or other magnetic storage devices are not limited to, or other are appointed
What can be used for carrying or store with instruct or data structure and other can be by general or special computer or general or specially treated
Device reads the medium of the program code of form.Additionally, any connection can be properly termed computer readable medium, example
Such as, if software is by a coaxial cable, fiber optic cables, double from web-site, server or other remote resources
Twisted wire, Digital Subscriber Line (DSL) or with the wireless way for transmitting such as example infrared, wireless and microwave be also contained in it is defined
In computer readable medium.Described disk (disk) and disk (disc) include Zip disk, radium-shine disk, CD, DVD, floppy disk
And Blu-ray Disc, disk is generally with magnetic duplication data, and disk generally carries out optical reproduction data with laser.Combinations of the above
Can also be included in computer readable medium.
Particular embodiments described above, purpose, technical scheme and beneficial effect to the application have been carried out further in detail
Describe in detail bright, should be understood that the specific embodiment that the foregoing is only the embodiment of the present application, be not used to limit this Shen
Protection domain please, all any modification, equivalent substitution and improvements within spirit herein and principle, done etc., all should wrap
It is contained within the protection domain of the application.
Claims (10)
1. the heating method for early warning of a kind of electric heating cable, it is characterised in that comprise the following steps：
Dimensional parameters, the quality of the roller, the electric heating of the roller that electric heating is wound are obtained in the roller
The current parameters of the number of turn of upper winding and the electric heating；
The caloric value of the roller is determined according to the dimensional parameters, the number of turn and the current parameters；
According to the caloric value and the quality of the roller, the temperature increment of the roller is obtained；
Judge whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then send early warning signal.
2. the method for claim 1, it is characterised in that the current parameters include：Electric current in the electric heating
Frequency and virtual value；The dimensional parameters include：The diameter of the roller, the roller wall thickness of the roller is wound with described
The length of the roller of electric heating.
3. method as claimed in claim 2, it is characterised in that described according to the dimensional parameters, the number of turn and described
Current parameters determine the caloric value of the roller, specially：
By the dimensional parameters, the number of turn, and the current parameters, the hair that below equation is calculated the roller is brought into
Heat,
In formula, W represents t0The hot merit produced on the roller in time, N represents what the electric heating wound on which cylinder
The number of turn, D0The diameter of the roller is represented, δ represents the roller wall thickness of the roller, and f represents electric current in the electric heating cable
Frequency, μ represents the magnetic conductivity of air dielectric, and ρ represents the resistivity of roller material, L0Expression is wound with the electric heating
The length of roller, I represents the virtual value of electric current in the electric heating.
4. method as claimed in claim 3, it is characterised in that described according to the caloric value and the quality of the roller,
The temperature increment of the roller is obtained, specially：
The temperature increment of the roller is calculated according to below equation,
W=cm Δs T
In formula, c represents the specific heat capacity of roller material, and Δ T represents the temperature increment of the roller.
5. the heating prior-warning device of a kind of electric heating cable, it is characterised in that described device includes：
Parameter acquisition module, dimensional parameters, the quality of the roller, the electricity for obtaining the roller that electric heating is wound
The number of turn and the current parameters of the electric heating that electric heating cable winds on which cylinder；
Heat determining module, for determining the roller according to the dimensional parameters, the number of turn and the current parameters
Caloric value；
Temperature increment determining module, for the quality according to the caloric value and the roller, obtains the temperature of the roller
Increment；
Judge module, for judging whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then sends out
Go out early warning signal.
6. the heating method for early warning of a kind of electric heating cable, it is characterised in that comprise the following steps：
Obtain coiled tubing quality and length, and the coiled tubing current parameters；
The caloric value of the coiled tubing is determined according to the length, and the current parameters；
According to the caloric value and quality, the temperature increment of the coiled tubing is obtained；
Judge whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then send early warning signal.
7. method as claimed in claim 6, it is characterised in that the current parameters are the virtual value of electric current.
8. method as claimed in claim 7, it is characterised in that described to be determined according to the length, and the current parameters
The caloric value of the coiled tubing, specially：
By the length, and the electric current virtual value, bring the caloric value that below equation is calculated the coiled tubing into,
W=rLI2·t0
In formula, W represents t0The hot merit produced on the coiled tubing in time, r represents the resistance of the coiled tubing unit length
Anti-, L represents the length of the coiled tubing, and I represents the virtual value of electric current in the coiled tubing.
9. method as claimed in claim 8, it is characterised in that described according to the caloric value and diameter, obtains described continuous
The temperature increment of oil pipe, specially：
The temperature increment of the coiled tubing is calculated according to below equation,
W=cm Δs T
In formula, c represents the specific heat capacity of coiled tubing material, and Δ T represents the temperature increment of the coiled tubing.
10. the heating prior-warning device of a kind of electric heating cable, it is characterised in that described device includes：
The current parameters of parameter acquisition module, quality and length for obtaining coiled tubing, and the coiled tubing；
Heat determining module, for determining the caloric value of the coiled tubing according to the length, and the current parameters；
Temperature increment determining module, for according to the caloric value and quality, obtaining the temperature increment of the coiled tubing；
Judge module, for judging whether the temperature increment has reached default early warning temperature value, if the determination result is YES, then sends out
Go out early warning signal.
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| CN201611021070.0A CN106837281B (en) | 2016-11-15 | 2016-11-15 | Heating early warning method and device for electric heating cable |
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| CN201611021070.0A CN106837281B (en) | 2016-11-15 | 2016-11-15 | Heating early warning method and device for electric heating cable |
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| CN107724978A (en) * | 2017-11-01 | 2018-02-23 | 中石化石油工程技术服务有限公司 | Coiled tubing work vehicle and roller unit, roller |
| CN107724977A (en) * | 2017-11-01 | 2018-02-23 | 中石化石油工程技术服务有限公司 | Coiled tubing work vehicle and its roller unit, roller |
| CN110780157A (en) * | 2019-11-19 | 2020-02-11 | 湖南国奥电力设备有限公司 | Temperature-based underground cable fault judgment method and device |
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|---|---|
| CN106837281B (en) | 2019-10-11 |
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