CN113071819A - Automatic control device and control method for electric heating of oil storage tank - Google Patents
Automatic control device and control method for electric heating of oil storage tank Download PDFInfo
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- CN113071819A CN113071819A CN202010005591.7A CN202010005591A CN113071819A CN 113071819 A CN113071819 A CN 113071819A CN 202010005591 A CN202010005591 A CN 202010005591A CN 113071819 A CN113071819 A CN 113071819A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/744—Large containers having means for heating, cooling, aerating or other conditioning of contents heating or cooling through the walls or internal parts of the container, e.g. circulation of fluid inside the walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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Abstract
The disclosure provides an automatic control device and a control method for electric heating of an oil storage tank, and belongs to the field of oil exploitation. The device comprises a liquid level and temperature integrated transmitter, a sectional electric heater and a controller; the liquid level and temperature integrated transmitter is arranged on the side wall of the oil storage tank, a probe of the liquid level and temperature integrated transmitter extends into the oil storage tank from the side wall of the oil storage tank, and the liquid level and temperature integrated transmitter is used for detecting the crude oil temperature and the liquid level height in the oil storage tank and sending the crude oil temperature and the liquid level height to the controller; the sectional type electric heater is arranged in the oil storage tank and is provided with a plurality of heating parts which are respectively used for heating crude oil at different liquid level heights in the oil storage tank in a sectional manner; and the controller is used for controlling the plurality of heating parts on the sectional type electric heater to work according to the crude oil temperature and the liquid level height in the oil storage tank. The device can carry out the even heating to the crude oil in the oil storage tank, guarantees the degree of accuracy of crude oil temperature measurement value, reduces electric heater's operating time and power consumption.
Description
Technical Field
The disclosure relates to the field of oil exploitation, in particular to an automatic control device and a control method for electric heating of an oil storage tank.
Background
Crude oil is produced from scattered wells, and after a certain amount of crude oil is stored in an oil storage tank, the crude oil needs to be transported to a united station by an oil tank truck for treatment. Because the crude oil contains wax and can be solidified at low temperature, the crude oil in the oil storage tank needs to be heated in the process of pulling and transporting the crude oil, and the oil is prevented from being solidified at too low temperature.
In the related art, a thermocouple temperature sensor and an electric heater are generally used to heat the crude oil in the oil storage tank. Wherein, thermocouple temperature sensor and electric heater all install in the oil storage tank bottom, and thermocouple temperature sensor is used for gathering the crude oil temperature in the oil storage tank, then the temperature that operating personnel gathered according to thermocouple temperature sensor opens and stops of electric heater artificial control. When the electric heater starts to work, the crude oil in the oil storage tank can be heated, the temperature of the crude oil in the oil storage tank is increased, the viscosity of the crude oil is reduced, and the normal loading and transporting of the crude oil are ensured.
However, the electric heater is installed at the bottom of the oil storage tank, and uneven heating is easy to occur in the heating process, so that the temperature of the crude oil at the bottom of the oil storage tank reaches a set value, and the temperature of the crude oil at the top is still lower. The thermocouple temperature sensor can only acquire the temperature of crude oil within a range of 25-30cm away from the bottom of the oil storage tank, the temperature of all crude oil in the oil storage tank cannot be truly reflected, and the accuracy of measured values is poor. In order to ensure that the crude oil temperature in the oil storage tank reaches a set value, the electric heater needs to be controlled to continuously heat, and the working time and the electric energy consumption of the electric heater are increased.
Disclosure of Invention
The embodiment of the disclosure provides an automatic control device and a control method for electrical heating of an oil storage tank, which can uniformly heat crude oil in the oil storage tank, ensure the accuracy of a temperature measurement value of the crude oil, and reduce the working time and the power consumption of an electric heater. The technical scheme is as follows:
in a first aspect, an automatic electric heating control device for an oil storage tank is provided, which is used for heating crude oil in the oil storage tank, wherein the axial direction of the oil storage tank is parallel to the horizontal direction, and the automatic electric heating control device for the oil storage tank comprises a liquid level and temperature integrated transmitter, a sectional type electric heater and a controller;
the liquid level and temperature integrated transmitter is arranged on the side wall of the oil storage tank, a probe of the liquid level and temperature integrated transmitter extends into the oil storage tank from the side wall of the oil storage tank, and the liquid level and temperature integrated transmitter is used for detecting the crude oil temperature and the liquid level height in the oil storage tank and sending the crude oil temperature and the liquid level height to the controller;
the sectional type electric heater is arranged in the oil storage tank and is provided with a plurality of heating parts, the plurality of heating parts are respectively used for heating crude oil at different liquid level heights in the oil storage tank in a sectional manner, and the liquid level height of the crude oil in the oil storage tank is the liquid level height along the diameter direction of the oil storage tank;
the controller is used for controlling the plurality of heating parts on the sectional type electric heater to work according to the crude oil temperature and the liquid level height in the oil storage tank.
Optionally, the segmented electric heater further comprises a cylindrical housing, the plurality of heating portions are arranged inside the cylindrical housing, and the plurality of heating portions are sequentially arranged along an axial direction of the cylindrical housing.
Optionally, the sectional type electric heater is arranged in the oil storage tank along a vertical direction, or the sectional type electric heater is obliquely arranged in the oil storage tank, and the sectional type electric heater is arranged at a set angle with the axis of the oil storage tank.
Optionally, the segmented heater is disposed at an angle of 30 ° to the axis of the storage tank.
Optionally, the segmented heater is disposed below a maximum safe level within the oil storage tank, the maximum safe level having a height of 95% of a diameter of the oil storage tank.
Optionally, the automatic control device for electric heating of the oil storage tank further comprises a heater support, one end of the heater support is fixed on the inner wall of the oil storage tank, the other end of the heater support is provided with a heater accommodating groove, and the sectional type electric heater is installed in the heater accommodating groove.
Optionally, the controller is further configured to control the segmented electric heater to perform segmented heating on the crude oil at different liquid levels in the oil storage tank within a set time period according to price difference of the power grid in a peak-valley-level time period, where the set time period is a time period with the lowest electricity price in the peak-valley-level time period.
In a second aspect, there is provided an automatic control method for electrical heating of an oil storage tank, the automatic control method being applied to the automatic control device for electrical heating of an oil storage tank according to the first aspect, the automatic control method for electrical heating of an oil storage tank comprising:
detecting the temperature and the liquid level height of the crude oil in the oil storage tank;
and controlling the heating parts on the sectional type electric heater to respectively perform sectional heating on the crude oil at different liquid level heights in the oil storage tank according to the crude oil temperature and the liquid level height in the oil storage tank.
Optionally, the controlling the plurality of heating portions on the segmented electric heater to respectively perform segmented heating on the crude oil at different liquid levels in the oil storage tank according to the crude oil temperature and the liquid level in the oil storage tank includes:
when the liquid level height in the oil storage tank reaches a first liquid level height, controlling the heating part below the first liquid level height to heat the crude oil in the oil storage tank until the temperature of the crude oil in the oil storage tank reaches a set temperature, wherein the first liquid level height is any height below the highest safe liquid level in the oil storage tank;
and controlling a first heating part to intermittently operate, and controlling other heating parts except the first heating part to stop operating, wherein the first heating part is any one of the plurality of heating parts which is positioned below the first liquid level height.
Optionally, the automatic control method for electrical heating of the oil storage tank further comprises:
and controlling the sectional type electric heater to perform sectional heating on the crude oil at different liquid level heights in the oil storage tank within a set time period according to the price difference of the power grid in the peak-valley time period, wherein the set time period is the time period with the lowest electricity price in the peak-valley time period.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
through setting up an oil storage tank electrical heating automatic control device, because the oil storage tank level is placed, when specifically using, can install liquid level temperature integration changer on the lateral wall of oil storage tank to in the crude oil temperature and the liquid level height in the detection oil storage tank. Meanwhile, the sectional electric heater is adopted to perform sectional heating on the crude oil in the oil storage tank, so that the heating uniformity of the crude oil can be ensured, and the crude oil temperature value detected by the liquid level and temperature integrated transmitter can be more accurate. And the device can automatically control a plurality of heating parts on the sectional type electric heater to work according to the crude oil temperature and the liquid level height in the oil storage tank detected by the liquid level and temperature integrated transmitter by adopting the controller so as to respectively perform sectional heating on crude oil at different liquid level heights. When the crude oil in the oil storage tank does not reach the liquid level height corresponding to the partial heating part, the partial heating part can be controlled to stop working, and therefore the working time and the electric energy consumption of each heating part in the sectional type electric heater can be reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic control device for electrical heating of an oil storage tank according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a sectional electric heater provided in an embodiment of the present disclosure;
FIG. 3 is a flow chart of a method for automatically controlling electrical heating of an oil storage tank according to an embodiment of the present disclosure;
fig. 4 is a schematic heating diagram of a segmented electric heater provided in an embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an automatic electric heating control device for an oil storage tank according to an embodiment of the present disclosure, as shown in fig. 1, the automatic electric heating control device for an oil storage tank is used for heating crude oil in an oil storage tank 100. The axial direction of the oil tank 100 is parallel to the horizontal direction, i.e., the oil tank 100 is horizontally disposed.
The automatic electric heating control device for the oil storage tank comprises a liquid level and temperature integrated transmitter 1, a sectional type electric heater 2 and a controller 3.
The liquid level temperature integrated transmitter 1 is mounted on the side wall of the oil storage tank 100, and the probe 11 of the liquid level temperature integrated transmitter 1 protrudes from the side wall of the oil storage tank 100 into the inside of the oil storage tank 100. The liquid level and temperature integrated transmitter 1 is used for detecting the crude oil temperature and the liquid level height in the oil storage tank 100 and sending the crude oil temperature and the liquid level height to the controller 3.
The segmented electric heater 2 is provided in the oil storage tank 100, and the segmented electric heater 2 has a plurality of heating portions 21 (see fig. 2). The plurality of heating units 21 are used to heat crude oil at different liquid levels in the oil storage tank 100 in stages, and the liquid level of the crude oil in the oil storage tank 100 is a liquid level along the diameter direction y of the oil storage tank 100.
And a controller 3 for controlling the operation of the plurality of heating parts 21 of the sectional type electric heater 2 according to the crude oil temperature and the liquid level height in the oil storage tank 100.
The embodiment of the disclosure provides an automatic control device for electric heating of an oil storage tank, and the oil storage tank is horizontally placed, so that the integrated transmitter for liquid level and temperature can be installed on the side wall of the oil storage tank when in specific use, and the temperature and the height of the liquid level of crude oil in the oil storage tank can be conveniently detected. Meanwhile, the sectional electric heater is adopted to perform sectional heating on the crude oil in the oil storage tank, so that the heating uniformity of the crude oil can be ensured, and the crude oil temperature value detected by the liquid level and temperature integrated transmitter can be more accurate. And the device can automatically control a plurality of heating parts on the sectional type electric heater to work according to the crude oil temperature and the liquid level height in the oil storage tank detected by the liquid level and temperature integrated transmitter by adopting the controller so as to respectively perform sectional heating on crude oil at different liquid level heights. When the crude oil in the oil storage tank does not reach the liquid level height corresponding to the partial heating part, the partial heating part can be controlled to stop working, and therefore the working time and the electric energy consumption of each heating part in the sectional type electric heater can be reduced.
It should be noted that, in the implementation manner of this embodiment, the controller 3 is used to automatically control the operation of the segmented electric heater 2, so that the whole crude oil heating process does not need to be controlled manually, the situations of misjudgment and misoperation during manual control can be reduced, and the control accuracy of the segmented electric heater 2 is improved. Meanwhile, the labor can be saved, and the working efficiency of crude oil hauling is improved.
Optionally, the automatic control device for electrical heating of the oil storage tank can also comprise an electrical heater control cabinet 4. The electric heater control cabinet 4 is electrically connected with the sectional type electric heater 2. The electric heater control cabinet 4 is used for controlling the sectional heater 2 to be in a manual control working mode or an automatic control working mode.
When the controller 3 fails to perform control, the segment heater 2 may be controlled to be in the manual control operation mode by the electric heater control cabinet 4, and then each heating part 21 of the segment heater 2 may be manually controlled to operate.
Wherein, the electric heater control cabinet 4 is provided with a mode switching button for controlling the sectional heater 2 to be in a manual control working mode or an automatic control working mode. Meanwhile, the electric heater control cabinet 4 is also provided with a switch button for controlling the start and stop of each heating part 21.
In this embodiment, the electric heater control cabinet 4 may output an indication signal to the segmented heater 2 using a 485 standard communication protocol to indicate whether the segmented heater 2 is operating in the manual control mode or the automatic control mode.
In one implementation of the present embodiment, the segmented electric heater 2 is disposed in the oil tank 100 in a vertical direction.
In another implementation manner of the embodiment, as shown in fig. 1, the sectional type heater 2 is obliquely arranged in the oil storage tank 100, and the sectional type heater 2 is arranged at a set angle θ with respect to the axis of the oil storage tank 100, so as to ensure the heating effect of the sectional type electric heater 2 on the crude oil in the oil storage tank 100 when the oil storage tank 100 is horizontally arranged.
The set angle θ may be determined according to the axial length of the oil storage tank 100, the diameter of the oil storage tank 100, and the axial length of the heater block 2, so as to ensure that the heater block 2 can be installed in the oil storage tank 100 and maximally contact the crude oil in the oil storage tank 100.
For example, when the axial length of the segmented heater 2 is greater than the diameter of the oil tank 100, the segmented heater 2 may be disposed at a set angle θ to the axis of the oil tank 100 to ensure that the segmented heater 2 can be installed into the oil tank 100. And theta can be set smaller as the axial length of the oil tank 100 is longer. As the axial length of the oil tank 100 is shorter, θ can be set larger.
As shown in fig. 1, in the present embodiment, the sectional heater 2 is disposed at an angle of 30 ° to the axis of the oil tank 100.
Alternatively, a through hole is opened on the end surface of the oil tank 100, and the sectional heater 2 may be disposed in the oil tank 100 through the through hole.
Optionally, a segmented heater 2 is provided at the maximum safe level H in the storage tank 1000Below, the maximum safe level H0Is 95% of the diameter D of the oil tank 100.
If the crude oil injected into the oil storage tank 100 exceeds the maximum safe level H0This may cause the crude oil in the oil storage tank 100 to overflow, which may result in environmental pollution. Therefore, the sectional heater 2 is disposed at the highest safety level H in the oil tank 1000In this way, the heating effect of the sectional type electric heater 2 on the crude oil in the oil storage tank 100 can be ensured.
In the present embodiment, the farthest distance of the sectional type electric heater 2 from the oil tank 100 in the y direction as shown in fig. 1 is 63% of the diameter of the oil tank 100.
Optionally, the automatic control device for electrical heating of the oil storage tank further comprises a heater bracket 5. One end of the heater supporter 5 is fixed to the inner wall of the oil tank 100, and the other end of the heater supporter 5 is provided with a heater receiving groove 5 a. The segment type electric heater 2 is installed in the heater receiving groove 5 a.
Optionally, the controller 3 is further configured to control the segmented electric heater 2 to heat the crude oil at different liquid levels in the oil storage tank 100 in a segmented manner within a set time period according to the price difference of the power grid during the peak-valley time period, where the set time period is the time period with the lowest electricity price.
The peak-valley-level time period of the power grid is a peak power utilization time period, a valley power utilization time period and a flat-time power utilization time period. The electricity utilization peak time period, the electricity utilization valley time period and the ordinary electricity utilization time period form electricity utilization of a whole day. According to the principle, each power supply company can specifically define each time period according to different seasons and different times of peak-valley load occurrence. For example, the situation performed by the Guangxi grid is: the daily peak time period of electricity consumption is 7: 00-11: 00, 19: 00-23: 00; the normal electricity consumption time period is 11: 00-19: 00; the electricity consumption valley time period is 23: 00-day 7: 00.
the electricity price is usually lowest during the electricity use valley period, and therefore, in the present embodiment, the segmented electric heater 2 may be controlled to operate at the current day 23: 00-day 7: and the crude oil in the oil storage tank 100 is heated in a subsection 00 so as to save the electricity charge.
Illustratively, the controller 3 gives priority to the liquid level and the oil temperature in the oil storage tank 100 when controlling the segmented electric heater 2 to heat, and further takes the price difference of the peak-valley level of the power grid into account.
In the present embodiment, the controller 3 may be a programmable logic controller, and the controller 3 may also be installed in the electric heater control cabinet 4.
Fig. 2 is a schematic structural diagram of a segmented electric heater according to an embodiment of the disclosure, and as shown in fig. 2, the segmented electric heater 2 further includes a cylindrical housing 22, a plurality of heating portions 21 are disposed inside the cylindrical housing 22, and the plurality of heating portions 21 are sequentially disposed along an axial direction of the cylindrical housing 22. The cylindrical housing 22 may serve a protective function.
Illustratively, three heating members with a rated power of 5KW are provided in the housing of the sectional electric heater 2, forming three heating portions 21. The sectional type electric heater 2 can be the same as the existing GDRBZ series electric heater in size, the total power of the sectional type electric heater 2 is 15KW, the heating temperature is 50-85 ℃ (can be set), and the explosion-proof grade is Exd II C.
Fig. 3 is a flowchart of a method for automatically controlling electrical heating of an oil storage tank according to an embodiment of the present disclosure, and as shown in fig. 3, the method for automatically controlling electrical heating of an oil storage tank is suitable for the automatic control device for electrical heating of an oil storage tank according to the above embodiment. The automatic control method for the electric heating of the oil storage tank comprises the following steps:
In this embodiment, the liquid level and temperature integrated transmitter 1 can be used to detect the crude oil temperature and the liquid level height in the oil storage tank 100.
And 302, controlling a plurality of heating parts on the sectional type electric heater to respectively perform sectional heating on the crude oil at different liquid level heights in the oil storage tank according to the crude oil temperature and the liquid level height in the oil storage tank.
Illustratively, step 302 may include:
when the liquid level height in the oil storage tank 100 reaches a first liquid level height, the heating part below the first liquid level height is controlled to heat the crude oil in the oil storage tank until the temperature of the crude oil in the oil storage tank reaches a set temperature. Wherein the first liquid level is the highest safety liquid level H in the oil storage tank 1000Any height below.
The first heating unit is controlled to operate intermittently, and the other heating units than the first heating unit among the plurality of heating units 21 are controlled to stop operating, the first heating unit being any one of the plurality of heating units 21 that is located at a first liquid level or lower.
At this time, the crude oil in the oil storage tank 100 has already reached the set temperature, so that only one of the heating part gaps needs to be controlled to work to play a role in heat preservation so as to maintain the crude oil temperature in the oil storage tank 100 at the set temperature. The control method can save and reduce the working time and the electric energy consumption of part of the electric heaters, thereby reducing the cost of the crude oil hauling process.
Fig. 4 is a schematic heating diagram of a sectional type electric heater provided in an embodiment of the present disclosure, and as shown in fig. 4, in the embodiment, the heating part 21 includes three heating parts, namely a heating part 21a, a heating part 21b and a heating part 21c, which are sequentially arranged at intervals in an axial direction of the sectional type electric heater 2, and the heating part 21c is spaced from a maximum safe liquid level H in the oil storage tank 1000Is shortest.
Wherein the heating part 21a is used for heating the liquid level1The following crude oil is heated by a heating section 21b for heating the crude oil at a liquid level height H1To the liquid level height H2The heating part 21c is used for heating the crude oil positioned at the liquid level height H2To the liquid level height of H3The crude oil in between is heated.
In this embodiment, H1＝50％D，H2＝75％D，H3Set at 62-70 ℃ for 90% D.
Then, when the liquid level in the oil storage tank 100 reaches H1At this time, the controller 3 commands the segment electric heater 2 to operate the heating portion 21 a.
When the liquid level in the oil tank 100 reaches H2At this time, the operation of the heating unit 21a and the heating unit 21b is controlled.
When the liquid level in the oil tank 100 reaches H3At this time, the operation of the heating unit 21a, the heating unit 21b, and the heating unit 21c is controlled.
After the crude oil temperature in the oil storage tank 100 reaches 62 ℃ to 70 ℃, the heating part 21a is controlled to operate intermittently, and the heating part 21b and the heating part 21c are controlled to stop operating, so that the crude oil temperature in the oil storage tank 100 is maintained at 62 ℃ to 70 ℃.
Optionally, the automatic control method for electrical heating of the oil storage tank further comprises:
and controlling the sectional type electric heater to perform sectional heating on the crude oil at different liquid level heights in the oil storage tank within a set time period according to the price difference of the power grid in the peak-valley time period.
The set time period is the time period with the lowest electricity price in the peak-valley flat time period.
In the present embodiment, the segmented electric heater 2 can be controlled to operate at 23: 00-day 7: and the crude oil in the oil storage tank 100 is heated in a subsection 00 so as to save the electricity charge.
Illustratively, when controlling the segmented electric heater 2 to heat, the liquid level and the oil temperature in the oil storage tank 100 are considered preferentially, and then the price difference of the peak-valley level of the power grid is considered.
The embodiment of the disclosure adopts an automatic electric heating control device for the oil storage tank, and because the oil storage tank is horizontally arranged, the integrated transmitter for liquid level and temperature can be installed on the side wall of the oil storage tank when in specific use, so as to detect the crude oil temperature and the liquid level height in the oil storage tank. Meanwhile, the sectional electric heater is adopted to perform sectional heating on the crude oil in the oil storage tank, so that the heating uniformity of the crude oil can be ensured, and the crude oil temperature value detected by the liquid level and temperature integrated transmitter can be more accurate. And the device can automatically control a plurality of heating parts on the sectional type electric heater to work according to the crude oil temperature and the liquid level height in the oil storage tank detected by the liquid level and temperature integrated transmitter by adopting the controller so as to respectively perform sectional heating on crude oil at different liquid level heights. When the crude oil in the oil storage tank does not reach the liquid level height corresponding to the partial heating part, the partial heating part can be controlled to stop working, and therefore the working time and the electric energy consumption of each heating part in the sectional type electric heater can be reduced.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. An automatic electric heating control device for an oil storage tank is used for heating crude oil in the oil storage tank (100), and is characterized in that the axial direction of the oil storage tank (100) is parallel to the horizontal direction, and the automatic electric heating control device for the oil storage tank comprises a liquid level and temperature integrated transmitter (1), a sectional type electric heater (2) and a controller (3);
the liquid level and temperature integrated transmitter (1) is installed on the side wall of an oil storage tank (100), a probe (11) of the liquid level and temperature integrated transmitter (1) extends into the oil storage tank (100) from the side wall of the oil storage tank (100), and the liquid level and temperature integrated transmitter (1) is used for detecting the crude oil temperature and the liquid level height in the oil storage tank (100) and sending the crude oil temperature and the liquid level height to the controller (3);
the sectional type electric heater (2) is arranged in the oil storage tank (100), the sectional type electric heater (2) is provided with a plurality of heating parts (21), the plurality of heating parts (21) are respectively used for heating crude oil at different liquid level heights in the oil storage tank in a sectional manner, and the liquid level height of the crude oil in the oil storage tank is the liquid level height along the diameter direction (y) of the oil storage tank;
the controller (3) is used for controlling the plurality of heating parts (21) on the sectional type electric heater (2) to work according to the crude oil temperature and the liquid level height in the oil storage tank (100).
2. The automatic control device for electric heating of an oil storage tank according to claim 1, wherein the segmented electric heater (2) further comprises a cylindrical outer shell (22), the plurality of heating portions (21) are provided inside the cylindrical outer shell (22), and the plurality of heating portions (21) are sequentially provided in an axial direction of the cylindrical outer shell (22).
3. Automatic control device for electric heating of oil storage tank according to claim 1 or 2, characterized in that the segmented electric heater (2) is arranged in the oil storage tank (100) in vertical direction or the segmented heater (2) is arranged in the oil storage tank (100) obliquely and the segmented heater (2) is arranged at a set angle to the axis of the oil storage tank (100).
4. Automatic control device for electric heating of an oil storage tank, according to claim 3, characterized in that the segmented heater (2) is arranged at an angle of 30 ° to the axis of the oil storage tank (100).
5. Automatic control device for electric heating of an oil storage tank according to claim 1 or 2, characterized in that the segmented heater (2) is arranged below the highest safety level in the oil storage tank (100), the height of the highest safety level being 95% of the diameter of the oil storage tank (100).
6. The automatic control device for electric heating of oil storage tank as claimed in claim 1 or 2, further comprising a heater bracket (5), wherein one end of said heater bracket (5) is fixed on the inner wall of said oil storage tank (100), the other end of said heater bracket (5) is provided with a heater receiving groove (5a), and said segmented electric heater (2) is installed in said heater receiving groove (5 a).
7. The automatic control device for electric heating of oil storage tank as claimed in claim 1 or 2, characterized in that the controller (3) is further configured to control the sectional electric heater (2) to perform sectional heating of crude oil at different liquid level levels in the oil storage tank (100) in a set time period according to the price difference of the power grid in the peak-valley time period, wherein the set time period is the time period with the lowest electricity price in the peak-valley time period.
8. An automatic control method for electrical heating of an oil storage tank, which is applied to the automatic control device for electrical heating of an oil storage tank according to any one of claims 1 to 7, and which comprises:
detecting the temperature and the liquid level height of the crude oil in the oil storage tank;
and controlling the heating parts on the sectional type electric heater to respectively perform sectional heating on the crude oil at different liquid level heights in the oil storage tank according to the crude oil temperature and the liquid level height in the oil storage tank.
9. The method of claim 8, wherein the step of controlling the plurality of heating portions of the segmented electric heater to perform segmented heating on the crude oil at different levels in the oil storage tank according to the crude oil temperature and the level in the oil storage tank comprises:
when the liquid level height in the oil storage tank reaches a first liquid level height, controlling the heating part below the first liquid level height to heat the crude oil in the oil storage tank until the temperature of the crude oil in the oil storage tank reaches a set temperature, wherein the first liquid level height is any height below the highest safe liquid level in the oil storage tank;
and controlling a first heating part to intermittently operate, and controlling other heating parts except the first heating part to stop operating, wherein the first heating part is any one of the plurality of heating parts which is positioned below the first liquid level height.
10. The automatic control method of electrical heating of an oil storage tank of claim 8, further comprising:
and controlling the sectional type electric heater to perform sectional heating on the crude oil at different liquid level heights in the oil storage tank within a set time period according to the price difference of the power grid in the peak-valley time period, wherein the set time period is the time period with the lowest electricity price in the peak-valley time period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005591.7A CN113071819A (en) | 2020-01-03 | 2020-01-03 | Automatic control device and control method for electric heating of oil storage tank |
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| CN202010005591.7A CN113071819A (en) | 2020-01-03 | 2020-01-03 | Automatic control device and control method for electric heating of oil storage tank |
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| CN113071819A true CN113071819A (en) | 2021-07-06 |
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| CN202010005591.7A Pending CN113071819A (en) | 2020-01-03 | 2020-01-03 | Automatic control device and control method for electric heating of oil storage tank |
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| CN109008654A (en) * | 2018-07-28 | 2018-12-18 | 芜湖兆润商贸有限公司 | A kind of beverage bottle warmer of Segmented heating |
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| CN109008654A (en) * | 2018-07-28 | 2018-12-18 | 芜湖兆润商贸有限公司 | A kind of beverage bottle warmer of Segmented heating |
| CN209459230U (en) * | 2019-01-23 | 2019-10-01 | 沈阳新光电气制造有限公司 | Explosion-proof oil storage tank electric heater |
| CN209281273U (en) * | 2019-03-14 | 2019-08-20 | 栾海滨 | Oil storage tank intelligent measuring and control device |
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Application publication date: 20210706 |