Asphalt tank, asphalt station and control method of asphalt station

Abstract

The present invention provides an asphalt tank, an asphalt station and a control method for an asphalt station. The asphalt tank includes: a tank body for accommodating asphalt, the tank body is provided with a feed port and a discharge port; a plurality of partitions are arranged at intervals inside the tank body to divide the inside of the tank body into a plurality of processing zones that are interconnected, the plurality of processing zones include a first heating zone and a second heating zone, the second heating zone is close to the discharge port; an oil pipe heating assembly is arranged in the first heating zone and the second heating zone, the oil pipe heating assembly can operate in a first heating mode, a second heating mode, a third heating mode or a fourth heating mode, and is used to heat the asphalt; a plurality of electric heating rods are located in the second heating zone, arranged on the inner wall of the tank body provided with the discharge port, the plurality of electric heating rods are distributed around the discharge port, and extend in a direction away from the discharge port; the electric heating rods can operate in a first heating gear or a second heating gear, and are used to heat the asphalt in the second heating zone.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to an asphalt tank, an asphalt station and a control method for the asphalt station. Background Art

[0002] In the related art, the asphalt in the asphalt tank is heated by generally adopting the overall heating method. The temperature of the asphalt at the outlet can only meet the production requirements after the heating temperature in the entire tank reaches a certain level, which slows down the production speed of the asphalt and causes heat waste. Summary of the invention

[0003] In order to solve at least one of the above technical problems, a first object of the present invention is to provide an asphalt tank.

[0004] The second object of the present invention is to provide an asphalt station.

[0005] The third object of the present invention is to provide a control method for an asphalt station.

[0006] In view of this, according to the first purpose of the present invention, the proposed asphalt tank includes: a tank body for accommodating asphalt, the tank body is provided with a feed port and a discharge port; a plurality of partitions are arranged at intervals inside the tank body to divide the inside of the tank body into a plurality of processing zones that are interconnected, the plurality of processing zones include a first heating zone and a second heating zone, and the second heating zone is close to the discharge port; an oil pipe heating assembly is arranged in the first heating zone and the second heating zone, the oil pipe heating assembly can operate in a first heating mode, a second heating mode, a third heating mode or a fourth heating mode for heating the asphalt; a plurality of electric heating rods are located in the second heating zone, and are arranged on the inner wall of the tank body provided with the discharge port, the plurality of electric heating rods are distributed around the discharge port, and extend in a direction away from the discharge port; the electric heating rods can operate in a first heating gear or a second heating gear for heating the asphalt in the second heating zone.

[0007] The asphalt tank proposed in the present invention comprises a tank body and a plurality of partitions, wherein the tank body is used to contain asphalt, and the tank body is provided with a feed port and a discharge port, and the asphalt can enter the tank body through the feed port and can be discharged to the outside of the tank body through the discharge port.

[0008] Multiple partitions are arranged inside the tank body at intervals. Specifically, multiple partitions are arranged inside the tank body at intervals along the axis direction of the tank body. The partitions spaced apart from each other divide the space inside the tank body. For example, an area is divided between two adjacent partitions, and an area can also be divided between the partition and the inner wall of the tank body. The interior of the tank body is divided into multiple processing areas by the partitions. The multiple processing areas include a first heating area and a second heating area. The second heating area is close to the discharge port.

[0009] The internal space of the tank body is divided into different areas, so that targeted heating arrangements can be made for different areas. The division of the heating areas is corresponding to the position of the discharge port, so that the heating arrangements can be more appropriately made for how the asphalt can quickly reach the production temperature when discharged from the tank body.

[0010] The asphalt tank further includes an oil pipe heating assembly, which is arranged in the first heating zone and the second heating zone. The oil pipe heating assembly can operate in the first heating mode, the second heating mode, the third heating mode or the fourth heating mode to heat the asphalt. The heating capacity of the oil pipe heating assembly is different when it operates in different heating modes. By operating the oil pipe heating assembly in different heating modes, fine adjustment of asphalt heating is achieved, and the asphalt in the first heating zone and the second heating zone is heated.

[0011] The asphalt tank also includes a plurality of electric heating rods located in the second heating zone. By arranging a plurality of electric heating rods in the second heating zone, the number of heating components in the second heating zone is the largest within the entire asphalt tank, and thus the heating capacity of the second heating zone is the highest. By heating the asphalt in the second heating zone near the discharge port with a higher heating capacity, the asphalt in the second heating zone can be quickly heated to meet the use requirements. When the asphalt needs to be discharged for production, the asphalt at the discharge port can reach the temperature required for production more quickly, so that it can be discharged in a short time, thereby improving the heating efficiency of the asphalt tank for asphalt and reducing the waiting time for asphalt production.

[0012] Specifically, the electric heating rod is arranged on the inner wall of the tank body with the discharge port, and a plurality of electric heating rods are distributed around the discharge port and extend in the direction away from the discharge port. The electric heating rods distributed around the discharge port can heat the asphalt to be discharged from the discharge port in all directions, ensuring that the asphalt can quickly reach the temperature required for production. The electric heating rod can operate in the first heating gear or the second heating gear. It can be understood that when the asphalt temperature in the second heating zone is higher, it is closer to the temperature required for asphalt production, and a low gear can be used for heating. When the asphalt temperature in the second heating zone is lower and it is far from the temperature required for asphalt production, a high gear can be used for heating. The use of electric heating rods with gear adjustment capability to heat the asphalt can achieve more precise control of the asphalt heating process.

[0013] Compared with the asphalt tank in the related art, the present invention divides the asphalt into zones, and sets an oil pipe heating assembly to heat the asphalt in the first heating zone and the second heating zone, and the electric heating rod heats the asphalt in the second heating zone, thereby realizing targeted heating of the asphalt at different positions in the asphalt tank, and can meet the required number of areas according to the required amount of asphalt, avoiding the disadvantage of needing overall heating to obtain asphalt that meets the use requirements, reducing the waste of heat, improving the heating efficiency, and providing a basis for small-batch production of asphalt. In addition, by setting a plurality of electric heating rods in the second heating zone near the discharge port, and the electric heating rods are set on the side of the discharge port, it is possible to achieve rapid heating of the asphalt at the discharge port before the asphalt is discharged from the asphalt tank, and improve the speed of asphalt heating, so that the asphalt at the first discharge position reaches a usable temperature within a short time for discharge, greatly improving the heating efficiency, improving the utilization rate of thermal energy, and enabling users to use asphalt more conveniently to meet the various needs of industrial production.

[0014] In addition, the asphalt tank in the above embodiment provided by the present invention may also have the following additional technical features:

[0015] In the above technical scheme, the first heating zone includes: a first sub-heating zone, which is close to the feed port and connected to the feed port; a second sub-heating zone, which is located between the first sub-heating zone and the second heating zone; a third sub-heating zone, which is located on the side of the first sub-heating zone away from the second sub-heating zone; the oil guide pipe heating assembly includes: a first sub-tube, which is passed through the second heating zone and the second sub-heating zone, and the interior of the first sub-tube can allow the heat transfer medium to flow; a second sub-tube, a part of the second sub-tube is passed through the second heating zone, the first sub-heating zone, the second sub-heating zone and the third sub-heating zone, and another part of the second sub-tube is passed through the second heating zone, the first sub-heating zone and the second sub-heating zone, and the interior of the second sub-tube can allow the heat transfer medium to flow, and the second sub-tube and the first sub-tube are independent of each other.

[0016] In this technical solution, the first heating zone is divided into three parts, namely, the first sub-heating zone, the second sub-heating zone and the third sub-heating zone. By dividing the multiple first heating zones more finely, different areas in the asphalt tank can be more accurately controlled and heated.

[0017] The first sub-heating zone is close to the feed port and connected to the feed port. When the asphalt enters the asphalt tank through the feed port, it first flows into the first heating zone and then flows into the remaining zones. Because it is close to the feed port, the main function of the first sub-heating zone is to preheat and dehydrate the asphalt, remove as much moisture as possible absorbed by the asphalt from the air, and heat the asphalt to a certain temperature before flowing into the remaining zones for subsequent heating.

[0018] The second sub-heating zone is located between the first sub-heating zone and the second heating zone, and can heat the asphalt flowing into the second heating zone in advance, thereby improving the heating efficiency.

[0019] The third sub-heating zone is located on the side of the first sub-heating zone away from the second sub-heating zone, that is, the third sub-heating zone is located at the end of the tank body away from the discharge port, and its main function is to perform appropriate heating and replenish the asphalt consumed by the first sub-heating zone flowing into the second sub-heating zone.

[0020] Furthermore, the oil pipe heating assembly includes: a first sub-pipe, which is inserted into the second heating zone and the second sub-heating zone. The interior of the first sub-pipe can allow the heat transfer medium to flow, so that the heat transfer medium enters into different heating zones, and heat is transferred to the pipe wall and then to the asphalt, thereby heating the asphalt in the second heating zone and the asphalt in the second sub-heating zone.

[0021] The oil pipe heating assembly also includes a second sub-pipe, a portion of which passes through the second heating zone, the first sub-heating zone, the second sub-heating zone and the third sub-heating zone, and another portion of the second sub-pipe passes through the second heating zone, the first sub-heating zone and the second sub-heating zone. The interior of the second sub-pipe can allow heat transfer medium to flow, thereby allowing the heat transfer medium to enter into different heating zones, and heating the asphalt by transferring heat to the pipe wall and then to the asphalt.

[0022] A portion of the second sub-pipe is passed through the second heating zone, the first sub-heating zone, the second sub-heating zone and the third sub-heating zone, and the other portion is passed through the second heating zone, the first sub-heating zone and the second sub-heating zone, so as to heat the asphalt in all heating zones.

[0023] The second sub-tube is independent of the first sub-tube, so that during the heating control process, the two can be controlled separately, such as only controlling the first sub-tube to be conductive, and allowing the heat transfer medium to flow into it for heating, or only controlling the second sub-tube to be conductive, and allowing the heat transfer medium to flow into it for heating. This makes the control of the heating treatment of different treatment areas more precise and meets various needs for asphalt heating.

[0024] In any of the above technical solutions, the oil guide pipe heating assembly also includes: a three-way pipe, which is arranged on the outside of the tank body, and the liquid inlet of the three-way pipe is used to inject heat transfer medium into the three-way pipe, the first liquid outlet of the three-way pipe is connected to the first sub-pipe, and the second liquid outlet of the three-way pipe is connected to the second sub-pipe; a first control valve, which is arranged on the three-way pipe, and is used to control the connection and disconnection between the first liquid outlet and the first sub-pipe, and the first control valve can open a first opening or a second opening, and the first opening is greater than the second opening; a second control valve, which is arranged on the three-way pipe, and is used to control the connection and disconnection between the second liquid outlet and the second sub-pipe, and the second control valve can open a third opening or a fourth opening, and the third opening is greater than the fourth opening.

[0025] In the technical solution, the oil pipe heating assembly also includes a three-way pipe, a first control valve and a second control valve. The three-way pipe is arranged on the outside of the asphalt tank, and is a component that plays a role in series connection. The three-way pipe includes a liquid inlet, a first liquid outlet and a second liquid outlet that are interconnected. The liquid inlet is used for injecting heat transfer medium into the interior of the three-way pipe. The first liquid outlet is connected to the first sub-pipe, and the second liquid outlet is connected to the second sub-pipe. The heat transfer medium can enter the first sub-pipe and / or the second sub-pipe.

[0026] The first control valve is arranged on the three-way pipe to control the connection and disconnection between the first liquid outlet and the first sub-pipe. The second control valve is arranged on the three-way pipe to control the connection and disconnection between the second liquid outlet and the second sub-pipe, thereby realizing the controllable process of the heat transfer medium entering the first sub-pipe and the second sub-pipe, so that the heating process of the asphalt can be controlled, and the heating process of the asphalt can be controlled in time when an emergency occurs.

[0027] Specifically, the first control valve can be opened to a first opening degree or a second opening degree, the first opening degree being greater than the second opening degree. The second control valve can be opened to a third opening degree or a fourth opening degree, the third opening degree being greater than the fourth opening degree.

[0028] When the first control valve is opened to a first opening degree and the second control valve is closed, the oil guide pipe heating assembly operates in a first heating mode.

[0029] When the first control valve is opened to a second opening degree and the second control valve is closed, the oil guide pipe heating assembly operates in a second heating mode.

[0030] When the first control valve is opened to the second opening degree and the second control valve is opened to the third opening degree, the oil guide pipe heating assembly operates in the third heating mode.

[0031] When the first control valve is closed and the second control valve is opened to a fourth opening degree, the oil guide pipe heating assembly operates in a fourth heating mode.

[0032] In any of the above technical solutions, the asphalt tank also includes: an agitator, which includes: a mounting frame, which is detachably arranged on the inner wall of the tank body and located in the second sub-heating zone; blades, which are rotatably arranged on the mounting frame; and a deflector, which is arranged on the mounting frame and located on the peripheral side of the blades.

[0033] In this technical solution, the asphalt tank also includes an agitator, which is arranged in the second sub-heating zone and is used to stir the asphalt to accelerate the flow of the asphalt, thereby increasing the heat exchange amount of the asphalt, improving the heat exchange efficiency and avoiding heat waste.

[0034] The agitator includes: a mounting frame, which is detachably mounted on the inner wall of the asphalt tank; blades, which are rotatably mounted on the mounting frame; and a guide cover, which is mounted on the mounting frame and located around the blades. The mounting frame is mounted on the inner wall of the asphalt tank, and plays a role in supporting the entire agitator structure. The blades are rotatably mounted on the mounting frame, and are used to stir the asphalt, thereby increasing the heat exchange of the asphalt and improving the heat exchange efficiency. The guide cover is mounted on the mounting frame, located around the blades, and guides the asphalt.

[0035] In any of the above technical solutions, the asphalt tank also includes: a plurality of support plates, which are arranged inside the tank body, and the oil pipe heating assembly is passed through the support plates; the support plates include a first side and a second side relative to each other, and a third side and a fourth side relative to each other, the second side is connected to the inner wall of the tank body, and a plurality of protrusions are respectively formed on the third side and the fourth side, with a gap between two adjacent protrusions, and the protrusions are connected to the inner wall of the tank body.

[0036] In this technical solution, the asphalt tank also includes a plurality of support plates, which are arranged inside the tank body. Specifically, the plurality of support plates are arranged inside the tank body at intervals. Along the height direction of the tank body, the support plates are located below some partitions, and the oil pipe heating assembly is passed through the support plates. The support plates support and fix the oil pipe heating assembly.

[0037] The support plate includes a first side and a second side opposite to each other, and a third side and a fourth side opposite to each other, that is, along the height direction of the asphalt tank, from top to bottom, the upper inner wall of the tank body, the partition, the support plate and the lower inner wall of the tank body are sequentially formed. A plurality of protrusions are formed on the third side and the fourth side of the support plate, respectively. It can be understood that, because the oil pipe heating assembly is passed through the support plate, and the oil pipe heating assembly has a heat transfer medium inside, the pipe body of the oil pipe heating assembly will also have a certain temperature, and the heat will be radiated to the support plate. The support plate can also heat the asphalt to a certain extent, and the asphalt can flow through the gaps between the protrusions, and will also be heated due to contact with the protrusions. The existence of the protrusions increases the heat transfer area of ​​the support plate itself, and improves the efficiency of asphalt heating.

[0038] According to the second purpose of the present invention, the present invention also proposes an asphalt station, comprising: an asphalt tank as in any of the above technical solutions; and an energy supply component for heating the heat transfer medium, the energy supply component being connected to the oil pipe heating component.

[0039] The asphalt station proposed by the second object of the present invention comprises an asphalt tank as in any of the above technical solutions, and thus has all the beneficial effects of the asphalt tank in any of the above technical solutions.

[0040] Furthermore, the asphalt station also includes an energy supply component, which is used to heat the heat transfer medium, and the energy supply component is connected to the oil pipe heating component, so as to inject the heat transfer medium of a certain temperature into the oil pipe heating component to heat the asphalt. In addition, the heat transfer medium in the oil pipe heating component can also flow back to the energy supply component, and is reheated by the energy supply component and then injected into the oil pipe heating component.

[0041] According to the third purpose of the present invention, the present invention also proposes a control method for an asphalt station, which is used for an asphalt station as in the above technical solution, and the control method includes: obtaining a first temperature value of the asphalt in the second heating zone; obtaining the production temperature of the asphalt; determining a first temperature interval according to the production temperature; comparing the first temperature value with the first temperature interval; when the first temperature value is less than the lower limit of the first temperature interval, controlling the energy supply component to operate at the first operating power, controlling the oil pipe heating component to operate in the first heating mode, and obtaining the temperature difference between the first temperature value and the lower limit of the first temperature interval; when the temperature difference is less than or equal to the first temperature difference threshold, controlling multiple electric heating rods to operate at the first heating gear; when the temperature difference is greater than the first temperature difference threshold, controlling multiple electric heating rods to operate at the second heating gear; when the first temperature value is greater than the upper limit of the first temperature interval, obtaining the second temperature value of the asphalt in the second sub-heating zone in the first heating zone and the expected production of the asphalt; and controlling the operation of the oil pipe heating component according to the second temperature value and the expected production.

[0042] It should be noted that the executor of the control method for the asphalt station proposed in the present invention may be the control device of the asphalt station. In order to more clearly illustrate the control method for the asphalt station proposed in the present invention, the following technical scheme uses the executor of the control method for the asphalt station as an example of the control device of the asphalt station.

[0043] First, obtain the first temperature value of the asphalt in the second heating zone, that is, obtain the temperature value of the asphalt near the outlet position. It can be understood that among the first sub-heating zone, the second sub-heating zone, the third sub-heating zone and the second heating zone in the tank body, the second heating zone is the most important. Therefore, when controlling the asphalt station to operate, the temperature value of the asphalt in the second heating zone is measured first.

[0044] After obtaining the first temperature value of the asphalt in the second heating zone, the production temperature of the asphalt is obtained. The asphalt production temperature is the temperature that the asphalt discharged from the discharge port should reach. It is the temperature at which the asphalt meets the use requirements. Only at this temperature is the asphalt allowed to be discharged from the discharge port.

[0045] Afterwards, the first temperature interval is determined according to the production temperature, and the first temperature value is compared with the first temperature interval. Specifically, the first temperature interval is a temperature interval of ±3°C compared to the asphalt production temperature. That is, the present invention compares the first temperature value with a temperature range value, thereby avoiding too frequent control of the oil pipe heating component and the electric heating rod, and the difference between the first temperature interval and the asphalt production temperature is not large, so that the temperature comparison result can meet the accurate determination of the asphalt heating demand, and can also realize the reasonable control of the oil pipe heating component and the electric heating rod.

[0046] When the first temperature value is less than the lower limit of the first temperature interval, it can be determined that the temperature value of the asphalt in the second heating zone is relatively low, and the energy supply component is controlled to operate at the first operating power. Specifically, the first operating power is the maximum operating power of the energy supply component, so that the heat transfer medium can be quickly heated, thereby reducing the time of asphalt production. The oil pipe heating component is controlled to operate in the first heating mode, so that the oil pipe heating component can heat the asphalt and correspondingly increase the temperature of the asphalt. Specifically, when the oil pipe heating component operates in the first heating mode, the first control valve of the oil pipe heating component opens a first opening, and the second control valve is closed, so that as long as the first sub-pipe performs a heating operation, the heat transfer medium is centrally supplied to the first sub-pipe, and the first opening is the maximum opening that the first control valve can open.

[0047] The temperature difference between the first temperature value and the lower limit of the first temperature range is obtained during the process of controlling the operation of the energy supply component and the oil pipe heating component. When the temperature difference is less than or equal to the first temperature difference threshold, it can be determined that the temperature of the asphalt in the second heating zone is low, but the difference from the target temperature is small. Control multiple electric heating rods to operate in the first heating gear. In the first heating gear, the heating power of the electric heating rod is a relatively small heating power, so that the asphalt can be heated and the temperature of the asphalt can be increased to gradually reach the target temperature, while avoiding waste of resources.

[0048] When the temperature difference is greater than the first temperature difference threshold, multiple electric heating rods are controlled to operate at the second heating gear. It can be determined that the temperature value of the asphalt in the current second heating zone is low and the difference from the target temperature is large. Therefore, multiple electric heating rods are controlled to operate at the second heating gear. Under the second heating gear, the heating power operated by the electric heating rods is a larger heating power, so that the asphalt can be heated quickly, so that the temperature increases quickly to meet production needs.

[0049] When the first temperature value is greater than the upper limit value of the first temperature range, it means that the current asphalt temperature in the second heating zone meets the requirements, and then the second temperature value of the asphalt in the second sub-heating zone in the first heating zone and the expected production of the asphalt are obtained to determine whether the asphalt in other sub-zones needs to be heated to meet the production volume requirements, that is, the operation of the oil pipe heating component is controlled according to the second temperature value and the expected production.

[0050] The control method of the asphalt station proposed by the present invention can control the heating component of the oil pipe and the electric heating rod to heat, and can also control the energy supply component to operate at a specific operating power to cooperate with the heating process of the oil pipe heating component, thereby improving the heating efficiency. The number of heating components in the second heating zone is large, which can meet the requirement that the asphalt at the discharge port quickly reaches the production temperature, improve the heating efficiency, and meet the use requirements. In addition, the present invention compares the temperature with the temperature range, rather than with a single temperature value, which can improve the rationality of the control process.

[0051] In the above technical solution, the operation of the oil conduit heating assembly is controlled according to the second temperature value and the expected production volume, specifically including: when the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, the second temperature value is compared with the second temperature interval; when the second temperature value is less than the lower limit value of the second temperature interval, the oil conduit heating assembly is controlled to operate in the second heating mode; when the expected production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, the second temperature value is compared with the third temperature interval; and according to the comparison result of the second temperature value and the third temperature interval, the operation of the oil conduit heating assembly is controlled.

[0052] In this technical solution, when the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, it proves that heating the asphalt in the second heating zone alone cannot meet the current production demand, while heating the second heating zone and the second sub-heating zone can meet the current asphalt production demand. Therefore, the temperature of the asphalt in the current second sub-heating zone is measured based on the comparison result of the obtained second temperature value and the second temperature range.

[0053] The present invention compares the second temperature value with a temperature range value, thereby avoiding too frequent control of the oil pipe heating assembly. Specifically, the second temperature range is determined based on the rated heating temperature in the second sub-heating zone. The rated heating temperature of the second sub-heating zone is a high temperature value allowed for asphalt in the second heating zone. The difference between the second temperature range and the asphalt production temperature is not large, within the range of plus or minus five degrees Celsius, so that the temperature comparison result can not only meet the accurate judgment of the asphalt heating demand, but also realize the reasonable control of the oil pipe heating assembly.

[0054] When the second temperature value is less than the lower limit of the second temperature interval, it indicates that the asphalt temperature in the second sub-heating zone is relatively low and needs to be heated to a certain extent, so the oil pipe heating component is controlled to operate in the second heating mode to heat the asphalt accordingly. Specifically, the second heating mode includes the first control valve of the oil pipe heating component opening to a second opening degree and the second control valve closing, so that the oil pipe heating component only heats the second sub-heating zone to avoid waste of resources. Specifically, when the oil pipe is heated in the second heating mode, its heating capacity is less than that in the first heating mode.

[0055] When the expected production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, it is proved that heating only the second heating zone and the second sub-heating zone cannot meet the production volume requirements, and all areas in the asphalt tank need to be heated. Compare the second temperature value with the third temperature interval; according to the comparison result of the second temperature value and the third temperature interval, control the operation of the oil pipe heating component to meet the production needs.

[0056] In the above technical solution, according to the comparison result between the second temperature value and the third temperature interval, the operation of the oil conduit heating component is controlled, specifically including: when the second temperature value is less than the lower limit value of the third temperature interval, the oil conduit heating component is controlled to operate in the first heating mode; when the second temperature value is greater than the upper limit value of the third temperature interval and less than the lower limit value of the second temperature interval, the oil conduit heating component is controlled to operate in the third heating mode; when the second temperature value is greater than the upper limit value of the second temperature interval, the oil conduit heating component is controlled to operate in the fourth heating mode.

[0057] In this technical solution, when the second temperature value is less than the lower limit of the third temperature range, the oil pipe heating component is controlled to operate in the first heating mode. When the second temperature value is less than or equal to the third temperature threshold, it means that the current temperature of the asphalt in the second sub-heating zone is relatively low and the asphalt in the second sub-heating zone needs to be heated intensively. Therefore, the heating component is controlled to operate in the first heating mode and heat with high power to heat the asphalt in the second sub-heating zone in a short time.

[0058] When the second temperature value is greater than the upper limit of the third temperature interval and less than the lower limit of the second temperature interval, it means that the current temperature of the asphalt in the second sub-heating zone is more suitable. The oil pipe heating component is controlled to operate in the third heating mode to heat the asphalt more appropriately.

[0059] When the second temperature value is greater than the upper limit of the second temperature interval, it indicates that the temperature of the asphalt in the second heating zone is high enough, and the oil pipe heating assembly is controlled to operate in the fourth heating mode to avoid burning the asphalt in the second sub-heating zone, and at the same time, the asphalt in the first sub-heating zone where the second sub-pipe in the oil pipe heating assembly exists can also be heated, and the asphalt in the first sub-heating zone is raised to a suitable temperature, so that the asphalt does not need to be heated for too long when it is added to the second sub-heating zone.

[0060] In the above technical scheme, when the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, the control method also includes: comparing the second temperature value with the agitator start-up temperature value; when the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, controlling the agitator of the asphalt tank to turn on and run at a first speed; when the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is less than or equal to the second temperature difference threshold, controlling the agitator of the asphalt tank to turn on and run at a second speed; the second speed is less than the first speed.

[0061] In this technical solution, the present invention takes into account that if the asphalt is simply heated, the asphalt far away from the oil pipe heating component will inevitably be less affected by the thermal radiation and have a lower temperature, while the asphalt close to the oil pipe heating component will be more affected by the thermal radiation, which will cause some asphalt temperatures to be very high and some asphalt temperatures to be lower, affecting the heating effect. Therefore, the asphalt needs to flow so that each part of the asphalt can be heated evenly.

[0062] Therefore, the present invention sets an agitator in the second sub-heating zone inside the asphalt tank, and when the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, the control method also includes: comparing the second temperature value with the agitator start-up temperature value. By comparing the second temperature value with the agitator start-up temperature value, the start-up timing of the agitator can be accurately determined to avoid damage to the agitator.

[0063] When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, it means that the asphalt can be stirred, so the agitator of the asphalt tank is controlled to be turned on and run at the first speed. When the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, it means that the asphalt can be stirred, so the agitator of the asphalt tank is controlled to be turned on and run at the first speed. The first speed is a relatively high speed. When the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, the stirring resistance of the asphalt is small, so a high speed is used for stirring, which not only makes the asphalt flow, but also allows the asphalt to contact the oil guide pipe heating component, thereby improving the heat exchange efficiency.

[0064] When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is less than or equal to the second temperature difference threshold, although the asphalt has a certain temperature and can be stirred, the stirring resistance is still large. Therefore, stirring at a low speed can not only make the asphalt flow, so that the asphalt can contact the oil guide pipe heating assembly to increase the heat exchange, but also avoid damage to the agitator.

[0065] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0067] Figure 1 A schematic diagram of the structure of an asphalt tank in one embodiment of the present invention is shown;

[0068] Figure 2 Shows Figure 1 A right side view of the asphalt tank in the illustrated embodiment;

[0069] Figure 3 Shows Figure 1 One of the partial structural schematic diagrams of the asphalt tank in the illustrated embodiment;

[0070] Figure 4 Shows Figure 1 The second schematic diagram of the partial structure of the asphalt tank in the illustrated embodiment;

[0071] Figure 5 A schematic diagram showing the structure of the second sub-tube in the heating assembly in one embodiment of the present invention is shown;

[0072] Figure 6 Shows Figure 5 A front view of the second sub-tube in the illustrated embodiment;

[0073] Figure 7 Shows Figure 5 A right side view of the second sub-tube in the illustrated embodiment;

[0074] Figure 8 Shows Figure 5 A top view of the second sub-tube in the illustrated embodiment;

[0075] Fig. 9 A schematic diagram showing the structure of a first sub-tube in a heating assembly in one embodiment of the present invention is shown;

[0076] Fig.10 Shows Fig. 9 A left side view of the first sub-tube in the illustrated embodiment;

[0077] Fig.11 Shows Fig. 9 A front view of the first sub-tube in the illustrated embodiment;

[0078] Fig.12 Shows Fig. 9 A top view of the first sub-tube in the illustrated embodiment;

[0079] Fig.13 A schematic diagram of the structure of an electric heating rod in one embodiment of the present invention is shown;

[0080] Fig.14 A schematic structural diagram of a first partition plate in a partition in one embodiment of the present invention is shown;

[0081] Fig.15 Shows Fig.14 A left side view of the first partition plate in the illustrated embodiment;

[0082] Fig.16 A schematic diagram showing the structure of a second partition plate in a partition in one embodiment of the present invention is shown;

[0083] Fig.17 A schematic diagram of the structure of an agitator in an asphalt tank in one embodiment of the present invention is shown;

[0084] Fig.18 A schematic diagram of the structure of an agitator in an asphalt tank in another embodiment of the present invention is shown;

[0085] Fig.19 A schematic diagram of the structure of an agitator in an asphalt tank in another embodiment of the present invention is shown;

[0086] Fig. 20 A schematic diagram of the structure of an agitator in an asphalt tank in another embodiment of the present invention is shown;

[0087] Fig.21 A schematic diagram of the structure of blades in a stirrer in one embodiment of the present invention is shown;

[0088] Fig. 22 A schematic diagram showing the structure of blades in a stirrer in another embodiment of the present invention is shown;

[0089] Fig.23 A schematic diagram showing the structure of blades in a stirrer in another embodiment of the present invention is shown;

[0090] Fig.24 A schematic diagram of the structure of a support plate in one embodiment of the present invention is shown;

[0091] Fig.25 A schematic diagram of the structure of an asphalt tank in one embodiment of the present invention is shown;

[0092] Fig.26 One of the flow charts of the control method of an asphalt station in one embodiment of the present invention is shown;

[0093] Fig. 27 The second flow chart of the control method of an asphalt station in one embodiment of the present invention is shown;

[0094] Fig.28 The third flow chart of the control method of an asphalt station in one embodiment of the present invention is shown;

[0095] Fig.29 FIG4 shows a flow chart of a control method for an asphalt station according to an embodiment of the present invention;

[0096] Fig.30 FIG5 shows a flow chart of a control method for an asphalt station according to an embodiment of the present invention;

[0097] Fig.31 FIG6 shows a sixth flow chart of a control method for an asphalt station in one embodiment of the present invention;

[0098] Fig.32 FIG. 7 shows a flow chart of a control method for an asphalt station in one embodiment of the present invention.

[0099] in, Figures 1 to 25 The corresponding relationship between the reference numerals and the component names is as follows:

[0100] 100 asphalt tank, 102 tank body, 104 feed port, 106 discharge port, 108 partition, 110 first plate body, 112 connecting hole, 114 second plate body, 116 first heating zone, 118 first sub-heating zone, 120 second sub-heating zone, 122 third sub-heating zone, 124 second heating zone, 126 oil guide pipe heating assembly, 128 first sub-pipe, 130 second sub-pipe, 132 electric heating rod, 134 three-way pipe, 136 first control valve, 138 second control valve, 140 temperature detection assembly, 142 agitator, 144 mounting frame, 146 blades, 148 guide cover, 150 support plate, 152 protrusion, 154 liquid level meter, 156 feed port cover, 158 connecting pipe. DETAILED DESCRIPTION

[0101] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0102] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0103] Refer to the following Figures 1 to 32 The asphalt tank 100, the asphalt station and the control method of the asphalt station according to some embodiments of the present invention are described.

[0104] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Fig.25 As shown, in one embodiment of the present invention, the proposed asphalt tank 100 includes: a tank body 102 for containing asphalt, and the tank body 102 has a

[0105] A feed port 104 and a discharge port 106; a plurality of partitions 108, spaced apart inside the tank 102, to divide the inside of the tank 102 into a plurality of interconnected processing zones, the plurality of processing zones including a first heating

[0106] The first heating zone 116 and the second heating zone 124 are provided, and the second heating zone 124 is close to the discharge port 106; the oil pipe heating component 126 is provided in the first heating zone 116 and the second heating zone 124, and the oil pipe heating component 126 can operate in the first heating mode, the second heating mode, the third heating mode or the fourth heating mode.

[0107] Used to heat asphalt; multiple electric heating rods 132 are located in the second heating zone 124 and are arranged on the inner wall of the tank body 102 with a discharge port 106, and the multiple electric heating rods 132 are distributed around the discharge port 106 and extend in a direction away from the discharge port 106; the electric heating rods 132 can operate in the first heating gear or the second heating gear, and are used to heat the asphalt in the second heating zone 124.

[0108] The asphalt tank 100 proposed in the present invention includes a tank body 102 and a plurality of partitions 108, wherein the tank body 102 is used to contain asphalt, and the tank body 102 is provided with a feed port 104 and a discharge port 106, and the asphalt can enter the tank body 102 through the feed port 104 and can be discharged to the outside of the tank body 102 through the discharge port 106.

[0109] A plurality of partitions 108 are disposed at intervals inside the tank body 102. Specifically, the plurality of partitions 108 are disposed at intervals inside the tank body 102 along the axial direction of the tank body 102. The partitions 108 are spaced apart from each other.

[0110] The space inside the tank 102 is divided, for example, an area is divided between two adjacent partitions 108, and an area can also be divided between the partition 108 and the inner wall of the tank 102.

[0111] The partition 108 divides the interior of the tank 102 into a plurality of processing zones, including a first heating zone 116 and a second heating zone 124, wherein the second heating zone 124 is located close to the discharge port 106. The internal space of the tank 102 is divided into different zones, so that different zones can be processed.

[0112] By making targeted heating arrangements and creating a corresponding relationship 5 between the division of the heating zones and the position of the discharge port 106 , it is possible to more appropriately arrange heating for how the asphalt can quickly reach the production temperature when being discharged from the tank body 102 .

[0113] The asphalt tank 100 further includes an oil pipe heating assembly 126, which is disposed in the first heating zone 116 and the second heating zone 124. The oil pipe heating assembly 126 can operate in a first heating mode, a second heating mode, a third heating mode, or a fourth heating mode to heat the asphalt. By operating the oil pipe heating assembly 126 in different heating modes, fine adjustment of the asphalt heating is achieved, and the asphalt in the first heating zone 116 and the second heating zone 124 is heated.

[0114] The asphalt tank 100 further includes a plurality of electric heating rods 132, which are located in the second heating zone 124. By arranging a plurality of electric heating rods 132 in the second heating zone 124, the number of heating components in the second heating zone 124 is the largest within the entire asphalt tank 100, and thus the heating capacity of the second heating zone 124 is the highest. By heating the asphalt in the second heating zone 124 near the discharge port 106 with a higher heating capacity, the asphalt therein can be quickly heated to meet the use requirements. When the asphalt needs to be discharged for production, the asphalt at the discharge port 106 can reach the temperature required for production more quickly, so that it can be discharged in a short time, thereby improving the heating efficiency of the asphalt tank 100 for asphalt and reducing the waiting time for asphalt production.

[0115] Specifically, Fig.13 As shown, the electric heating rod 132 is arranged on the inner wall of the tank body 102 with the discharge port 106, and multiple electric heating rods 132 are distributed around the discharge port 106 and extend in the direction away from the discharge port 106. The electric heating rods 132 distributed on the side of the discharge port 106 can perform all-round heating on the asphalt to be discharged from the discharge port 106 to ensure that the asphalt can quickly reach the temperature required for production. The electric heating rod 132 can operate in a first heating gear or a second heating gear. It can be understood that when the temperature of the asphalt in the second heating zone 124 is higher, it is closer to the temperature required for asphalt production, and a low gear can be used for heating. When the temperature of the asphalt in the second heating zone 124 is lower and far from the temperature required for asphalt production, a high gear can be used for heating. The electric heating rod 132 with gear adjustment capability is used to heat the asphalt, so that more precise control of the asphalt heating process can be achieved.

[0116] Compared with the asphalt tank 100 in the related art, the present invention divides the asphalt into zones and sets an oil pipe heating assembly 126 to heat the asphalt in the first heating zone 116 and the second heating zone 124, and the electric heating rod 132 heats the asphalt in the second heating zone 124, thereby achieving targeted heating of the asphalt at different positions in the asphalt tank 100, and the corresponding heating can meet the required number of areas according to the required amount of asphalt, avoiding the disadvantage that overall heating is required to obtain asphalt that meets the use requirements, reducing heat loss and waste, improving heating efficiency, and providing a basis for small-batch production of asphalt. Furthermore, by arranging a plurality of electric heating rods 132 in the second heating zone 124 near the discharge port 106, and the electric heating rods 132 are arranged on the surrounding side of the discharge port 106, it is possible to quickly heat the asphalt at the discharge port 106 before the asphalt is discharged from the asphalt tank 100, thereby increasing the heating rate of the asphalt so that the asphalt reaches a usable temperature within a short period of time, greatly improving the heating efficiency, and improving the utilization rate of thermal energy, so that users can use it more conveniently and meet various needs of industrial production.

[0117] Specifically, the tank body 102 includes: a shell; an insulation layer, which is arranged inside the shell; an inner liner, which is arranged inside the insulation layer. Multiple partitions 108 and an oil pipe heating assembly 126 and multiple electric heating rods 132 are arranged inside the inner liner, and asphalt can be accommodated in the inner liner.

[0118] The heat insulation layer is coated on the outside of the inner liner, thereby reducing the heat loss of the inner liner and preventing the operator from being burned due to overheating when touching the asphalt tank 100. The shell has a certain structural strength and is coated on the outside of the heat insulation layer to protect the heat insulation layer and the inner liner.

[0119] Furthermore, if Figure 1 As shown, the asphalt tank 100 further includes a liquid level meter 154, which is disposed inside the tank body 102 and is used to measure the liquid level height of the asphalt in the tank body 102. By setting the liquid level meter 154, the liquid level height of the asphalt in the current tank body 102 can be measured, and the volume of the asphalt contained in the current tank body 102 can be accurately grasped. Specifically, the number of the liquid level meter 154 is two, and the two liquid level meters 154 are disposed inside the tank body 102 at intervals. Further, the liquid level meter 154 includes a radar liquid level meter 154.

[0120] Furthermore, if Figure 2 As shown, the asphalt tank 100 further includes a feed inlet cover plate 156 , which is disposed on the feed inlet 104 to prevent debris from entering the feed inlet 104 .

[0121] Furthermore, if Figure 1 , Figure 3 and Figure 4As shown, the asphalt tank 100 further includes: a temperature detection component 140, which is arranged in the tank body 102 and is used to detect the temperature of the asphalt in the plurality of first heating zones 116 and the second heating zone 124. The arrangement of the temperature detection component 140 can realize accurate grasp of the temperature of the asphalt in the plurality of first heating zones 116 and the second heating zone 124, and then control the oil pipe heating component 126 and the electric heating rod 132 accordingly according to the current temperature of the asphalt to heat the asphalt in the area whose current temperature is too low, and can also control the oil pipe heating component 126 and the electric heating rod 132 to stop heating when the temperature of the asphalt is too high, so as to avoid burning the asphalt and improve the rationality of asphalt heating control.

[0122] Specifically, the temperature detection component 140 includes a plurality of temperature sensors, wherein the plurality of temperature sensors are arranged in different processing zones, so as to detect the temperature of the asphalt in the processing zone. Specifically, there are four temperature sensors, one temperature sensor is arranged in the first sub-heating zone 118, one temperature sensor is arranged in the second sub-heating zone 120, one temperature sensor is arranged in the third sub-heating zone 122, and one temperature sensor is arranged in the second heating zone 124.

[0123] Furthermore, if Fig.14 , Fig.15 and Fig.16 As shown, the plurality of separators 108 include a plurality of first plates 110 and a second plate 114. The plurality of first plates 110 are arranged in the tank 102 along the axial direction of the tank 102 at intervals, and each first plate 110 is vertically installed on the inner wall of the tank 102 along the radial direction of the tank 102. There is a gap between at least one side of each first plate 110 and the inner wall of the tank 102. The existence of the gap allows the asphalt to flow between the various heating zones. Specifically, the plurality of first plates 110 have different sizes. For example, the first plates with larger sizes are preferably Fig.14 As shown, a connection hole 112 is provided thereon so that the heating assembly can be installed in part of the first plate body, and thus be installed in the first heating zone 116 and the second heating zone 124, thereby heating the asphalt in the first heating zone 116 and the second heating zone 124. Specifically, the number of the first plate bodies 110 is two.

[0124] The second plate body 114 is connected to the inner wall of the tank body 102 and is located near the discharge port 106. The second plate body 114, the inner wall of the tank body 102 and the first plate body enclose a second heating zone 124. Specifically, there is a gap between the second plate body 114 and the first plate body. Through this gap, the asphalt in the first heating zone 116 can flow into the second heating zone 124 and finally flow out of the tank body 102.

[0125] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, in one embodiment of the present invention, the first heating zone 116 includes: a first sub-heating zone 118, which is close to the feed port 104 and communicates with the feed port 104; a second sub-heating zone 120, which is located between the first sub-heating zone 118 and the second heating zone 124; a third sub-heating zone 122, which is located on the side of the first sub-heating zone 118 away from the second sub-heating zone 120; and an oil pipe heating assembly 126 includes: a first sub-pipe 128, which is arranged between the second heating zone 124 and the second sub-heating zone 120. 0, the interior of the first sub-tube 128 can allow the heat transfer medium to flow; the second sub-tube 130, a part of the second sub-tube 130 is arranged through the second heating zone 124, the first sub-heating zone 118, the second sub-heating zone 120 and the third sub-heating zone 122, and another part of the second sub-tube 130 is arranged through the second heating zone 124, the first sub-heating zone 118 and the second sub-heating zone 120, the interior of the second sub-tube 130 can allow the heat transfer medium to flow, and the second sub-tube 130 and the first sub-tube 128 are independent of each other.

[0126] In this embodiment, the first heating zone 116 is divided into three parts, namely, a first sub-heating zone 118, a second sub-heating zone 120 and a third sub-heating zone 122. By dividing the multiple first heating zones 116 more finely, different areas in the asphalt tank 100 can be more accurately controlled and heated in a targeted manner.

[0127] The first sub-heating zone 118 is close to the feed port 104 and is connected to the feed port 104. When the asphalt enters the asphalt tank 100 through the feed port 104, it first flows into the first heating zone 116 and then flows into the remaining zones. Because it is close to the feed port 104, the main function of the first sub-heating zone 118 is to preheat and dehydrate the asphalt, remove as much water as possible absorbed by the asphalt from the air, and heat the asphalt to a certain temperature before flowing into the remaining zones for subsequent heating processes.

[0128] The second sub-heating zone 120 is located between the first sub-heating zone 118 and the second heating zone 124 , and can preheat the asphalt flowing into the second heating zone 124 , thereby improving the heating efficiency.

[0129] The third sub-heating zone 122 is located on the side of the first sub-heating zone 118 away from the second sub-heating zone 120, that is, the third sub-heating zone 122 is located at the end of the tank body 102 away from the discharge port 106, and its main function is to perform appropriate heating and replenish the asphalt consumed by the first sub-heating zone 118 flowing into the second sub-heating zone 120.

[0130] Furthermore, the oil pipe heating assembly 126 includes: a first sub-pipe 128, which is inserted into the second heating zone 124 and the second sub-heating zone 120. The interior of the first sub-pipe 128 can allow the heat transfer medium to flow, so that the heat transfer medium enters into different heating zones, and heat is transferred to the pipe wall and then to the asphalt, thereby heating the asphalt in the second heating zone 124 and the asphalt in the second sub-heating zone 120.

[0131] The oil pipe heating assembly 126 also includes a second sub-pipe 130, a portion of which passes through the second heating zone 124, the first sub-heating zone 118, the second sub-heating zone 120 and the third sub-heating zone 122, and another portion of the second sub-pipe 130 passes through the second heating zone 124, the first sub-heating zone 118 and the second sub-heating zone 120. The interior of the second sub-pipe 130 can allow heat transfer medium to flow, thereby allowing the heat transfer medium to enter into different heating zones, and heating the asphalt by transferring heat to the pipe wall and then to the asphalt.

[0132] A portion of the second sub-pipe 130 passes through the second heating zone 124, the first sub-heating zone 118, the second sub-heating zone 120 and the third sub-heating zone 122, and another portion passes through the second heating zone 124, the first sub-heating zone 118 and the second sub-heating zone 120, so as to heat the asphalt in all heating zones.

[0133] The second sub-tube 130 and the first sub-tube 128 are independent of each other, so that during the heating control process, the two can be controlled separately, such as only controlling the first sub-tube 128 to be conductive, and the heat transfer medium flows into it for heating operation, or only controlling the second sub-tube 130 to be conductive, and the heat transfer medium flows into it for heating operation, so that the control of the heating treatment of different treatment areas can be more precise, meeting various needs for asphalt heating.

[0134] By using a heat transfer medium for heating, the cost of heating the asphalt is reduced, and by providing an electric heating pipe, the heating efficiency can be greatly improved, and the response speed of the heating process control can be greatly improved.

[0135] Specifically, Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the first sub-tube 128 is coiled into a multi-layer structure, thereby maximizing the heat exchange area of ​​the first sub-tube 128 in the second heating zone 124 and the second sub-heating zone 120, and the contact area with the asphalt is larger to produce a stronger heating effect. Specifically, the number of the first sub-tube 128 is one, and one first liquid guide tube is coiled into a four-layer structure.

[0136] Specifically, Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the second sub-tube 130 is wound into a multi-layer structure, specifically, the second sub-tube 130 is wound into a four-layer structure, wherein the four-layer structure of the second sub-tube 130 is all disposed in the first sub-heating zone 118, the second sub-heating zone 120, and the second heating zone 124. The upper two-layer structure of the second sub-tube 130 is not disposed in the third sub-heating zone 122, and only the lower two-layer structure is disposed in the third sub-heating zone 122, so that the heat exchange area of ​​the second sub-tube 130 in the third sub-heating zone 122 and the first sub-heating zone 118 is different, and thus the heating capacity is different.

[0137] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the oil guide pipe heating assembly 126 also includes: a three-way pipe 134, which is arranged on the outside of the tank body 102, and the liquid inlet of the three-way pipe 134 is used to inject heat transfer medium into the three-way pipe 134, the first liquid outlet of the three-way pipe 134 is connected to the first sub-pipe 128, and the second liquid outlet of the three-way pipe 134 is connected to the second sub-pipe 130; a first control valve 136, which is arranged on the three-way pipe 134, and is used to control the connection and disconnection of the first liquid outlet and the first sub-pipe 128, and the first control valve 136 can open a first opening or a second opening, and the first opening is greater than the second opening; a second control valve 138, which is arranged on the three-way pipe 134, and is used to control the connection and disconnection of the second liquid outlet and the second sub-pipe 130, and the second control valve 138 can open a third opening or a fourth opening, and the third opening is greater than the fourth opening.

[0138] In this embodiment, the oil pipe heating assembly 126 further includes a three-way pipe 134, a first control valve 136 and a second control valve 138. The three-way pipe 134 is arranged on the outer side of the asphalt tank 100, and is a component that plays a role in connecting in series. The three-way pipe 134 includes a liquid inlet, a first liquid outlet and a second liquid outlet that are interconnected. The liquid inlet is used for injecting heat transfer medium into the interior of the three-way pipe 134. The first liquid outlet is connected to the first sub-pipe 128, and the second liquid outlet is connected to the second sub-pipe 130. The heat transfer medium can enter the first sub-pipe 128 and / or the second sub-pipe 130.

[0139] The first control valve 136 is arranged on the three-way pipe 134, and is used to control the connection and disconnection between the first liquid outlet and the first sub-pipe 128. The second control valve 138 is arranged on the three-way pipe 134, and is used to control the connection and disconnection between the second liquid outlet and the second sub-pipe 130, thereby realizing the controllable process of the heat transfer medium entering the first sub-pipe 128 and the second sub-pipe 130, so that the heating process of the asphalt can be controlled, and the heating process of the asphalt can be controlled in time when an emergency occurs.

[0140] Specifically, the first control valve 136 can be opened to a first opening degree or a second opening degree, the first opening degree being greater than the second opening degree. The second control valve 138 can be opened to a third opening degree or a fourth opening degree, the third opening degree being greater than the fourth opening degree.

[0141] When the first control valve 136 is opened to a first degree and the second control valve 138 is closed, the oil pipe heating assembly 126 operates in the first heating mode.

[0142] When the first control valve 136 is opened to a second opening degree and the second control valve 138 is closed, the oil pipe heating assembly 126 operates in the second heating mode.

[0143] When the first control valve 136 is opened to the second opening degree and the second control valve 138 is opened to the third opening degree, the oil pipe heating assembly 126 operates in the third heating mode.

[0144] When the first control valve 136 is closed and the second control valve 138 is opened to a fourth opening degree, the oil pipe heating assembly 126 operates in the fourth heating mode.

[0145] In production, the first control valve 136 is opened so that the heat transfer medium can flow from the first liquid outlet into the first sub-tube 128. The first control valve 136 is closed so that the heat transfer medium cannot flow from the first liquid outlet into the first sub-tube 128. Furthermore, by opening the first control valve 136 to different degrees, different volumes of heat transfer medium can be controlled to flow into the first sub-tube 128, thereby adjusting the heating capacity of the first sub-tube 128.

[0146] Similarly, by opening the second control valve 138, the heat transfer medium can flow from the second liquid outlet into the second sub-tube 130. By closing the second control valve 138, the heat transfer medium cannot flow from the second liquid outlet into the second sub-tube 130. Furthermore, by opening the second control valve 138 to different degrees, different volumes of heat transfer medium can be controlled to flow into the second sub-tube 130, thereby adjusting the heating capacity of the second sub-tube 130.

[0147] Specifically, the first sub-tube 128 includes a first inlet end and a first outlet end, and the first inlet end is connected to the first liquid outlet, and the oil pipe heating component 126 also includes a connecting pipe 158, and the connecting pipe 158 includes a first port, a second port, and a third port that are interconnected. The first port of the connecting pipe 158 is connected to the first oil outlet, so that the heat transfer medium flowing inside the first oil pipe is discharged, and then the next step of processing is carried out. For example, the second port of the connecting pipe 158 is connected to an energy supply component, such as a boiler, so that the heat transfer medium re-enters the boiler for heating, avoiding waste of resources, and also allowing the heat transfer medium with lower temperature to be discharged in time. Specifically, the second sub-tube 130 includes a second inlet end and a second outlet end, and the second inlet end is connected to the second liquid outlet, and the second outlet end is connected to the third port.

[0148] like Figure 1 , Fig.17 , Fig.18 , Fig.19 , Fig. 20 , Fig.21 , Fig. 22 and Fig.23 As shown, the asphalt tank 100 also includes: an agitator 142, which includes: a mounting frame 144, which is detachably arranged on the inner wall of the tank body 102 and is located in the second sub-heating zone 120; a blade 146, which is rotatably arranged on the mounting frame 144; and a deflector 148, which is arranged on the mounting frame 144 and is located on the peripheral side of the blade 146.

[0149] In this technical solution, the asphalt tank 100 also includes an agitator 142, which is arranged in the second sub-heating zone 120 and is used to stir the asphalt to accelerate the flow of the asphalt, thereby increasing the heat exchange amount of the asphalt, improving the heat exchange efficiency and avoiding heat waste.

[0150] The agitator 142 includes: a mounting frame 144, which is detachably mounted on the inner wall of the asphalt tank 100; a blade 146, which is rotatably mounted on the mounting frame 144; and a flow guide 148, which is mounted on the mounting frame 144 and is located around the blade 146. The mounting frame 144 is mounted on the inner wall of the asphalt tank 100, and plays a role in supporting the entire structure of the agitator 142. The blade 146 is rotatably mounted on the mounting frame 144, and is used to stir the asphalt, thereby increasing the heat exchange of the asphalt and improving the efficiency of the heat exchange. The flow guide 148 is mounted on the mounting frame 144, and is located around the blade 146, and guides the asphalt.

[0151] like Figure 1As shown, in one embodiment of the present invention, the asphalt tank 100 also includes: a plurality of support plates 150, which are arranged inside the tank body 102, and the oil pipe heating assembly 126 is penetrated through the support plates 150; the support plates 150 include a first side and a second side relative to each other, and a third side and a fourth side relative to each other, the second side is connected to the inner wall of the tank body 102, and a plurality of protrusions 152 are respectively formed on the third side and the fourth side, and there is a gap between two adjacent protrusions 152, and the protrusions 152 are connected to the inner wall of the tank body 102.

[0152] In this embodiment, the asphalt tank 100 also includes a plurality of support plates 150, which are arranged inside the tank body 102. Specifically, the plurality of support plates 150 are arranged at intervals inside the tank body 102. Along the height direction of the tank body 102, the support plates 150 are located below part of the partitions 108, and the oil pipe heating assembly 126 is passed through the support plates 150. The support plates 150 support and fix the oil pipe heating assembly 126.

[0153] The support plate 150 includes a first side and a second side opposite to each other, and a third side and a fourth side opposite to each other, that is, along the height direction of the asphalt tank 100, from top to bottom, the upper inner wall of the tank body 102, the partition 108, the support plate 150 and the lower inner wall of the tank body 102 are sequentially formed. A plurality of protrusions 152 are formed on the third side and the fourth side of the support plate 150, respectively. It can be understood that, since the oil pipe heating assembly 126 is disposed through the support plate 150, and the oil pipe heating assembly 126 has a heat transfer medium inside, the pipe body of the oil pipe heating assembly 126 will also have a certain temperature, and the heat will be radiated to the support plate 150. The support plate 150 can also heat the asphalt to a certain extent, and the asphalt can flow through the gaps between the protrusions 152, and will also be heated due to contact with the protrusions 152. The existence of the protrusions 152 increases the heat transfer area of ​​the support plate 150 itself, thereby improving the efficiency of asphalt heating.

[0154] In one embodiment of the present invention, an asphalt station is provided, comprising: an asphalt tank 100 as in any of the above embodiments; and an energy supply component for heating a heat transfer medium, wherein the energy supply component is connected to an oil pipe heating component.

[0155] In this embodiment, the asphalt station includes the asphalt tank 100 in any of the above embodiments, and thus has all the beneficial effects of the asphalt tank 100 in any of the above embodiments.

[0156] Furthermore, the asphalt station also includes an energy supply component, which is used to heat the heat transfer medium, and the energy supply component is connected to the oil pipe heating component, so as to inject the heat transfer medium of a certain temperature into the oil pipe heating component to heat the asphalt. In addition, the heat transfer medium in the oil pipe heating component can also flow back to the energy supply component, and is reheated by the energy supply component and then injected into the oil pipe heating component. Specifically, the energy supply component includes a boiler, and the heat transfer medium includes oil.

[0157] Fig.26 One of the flow charts of a control method for an asphalt station in one embodiment of the present invention is shown, wherein the control method comprises:

[0158] S202: Acquire a first temperature value of asphalt in the second heating zone;

[0159] S204: Obtaining the production temperature of asphalt;

[0160] S206: Determine a first temperature range according to the production temperature;

[0161] S208: Compare the first temperature value with the first temperature range;

[0162] S210: When the first temperature value is less than the lower limit value of the first temperature interval, control the energy supply component to operate at the first operating power, control the oil pipe heating component to operate in the first heating mode, and obtain a temperature difference between the first temperature value and the lower limit value of the first temperature interval;

[0163] S212: When the temperature difference is less than or equal to the first temperature difference threshold, control the plurality of electric heating rods to operate at the first heating gear;

[0164] S214: When the temperature difference is greater than the first temperature difference threshold, controlling the plurality of electric heating rods to operate at the second heating gear;

[0165] S216: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0166] S218: Control the operation of the oil pipe heating component according to the second temperature value and the estimated production volume.

[0167] The executor of the control method of the asphalt station proposed in the present invention may be the control device of the asphalt station. In order to more clearly illustrate the control method of the asphalt station proposed in the present invention, the following technical scheme uses the executor of the control method of the asphalt station as the control device of the asphalt station for illustrative explanation.

[0168] First, obtain the first temperature value of the asphalt in the second heating zone, that is, obtain the temperature value of the asphalt near the outlet position. It can be understood that among the first sub-heating zone, the second sub-heating zone, the third sub-heating zone and the second heating zone in the tank body, the second heating zone is the most important. Therefore, when controlling the asphalt station to operate, the temperature value of the asphalt in the second heating zone is measured first.

[0169] After obtaining the first temperature value of the asphalt in the second heating zone, the production temperature of the asphalt is obtained. The asphalt production temperature is the temperature that the asphalt discharged from the discharge port should reach. It is the temperature at which the asphalt meets the use requirements. Only at this temperature is the asphalt allowed to be discharged from the discharge port.

[0170] Afterwards, the first temperature interval is determined according to the production temperature, and the first temperature value is compared with the first temperature interval. Specifically, the first temperature interval is a temperature interval of ±3°C compared to the asphalt production temperature. That is, the present invention compares the first temperature value with a temperature range value, thereby avoiding too frequent control of the oil pipe heating component and the electric heating rod, and the difference between the first temperature interval and the asphalt production temperature is not large, so that the temperature comparison result can not only meet the accurate determination of the asphalt heating demand, but also realize the reasonable control of the oil pipe heating component and the electric heating rod.

[0171] When the first temperature value is less than the lower limit of the first temperature range, it can be determined that the temperature of the asphalt in the second heating zone is low, and the energy supply component is controlled to operate at the first operating power. Specifically, the first operating power is the maximum operating power of the energy supply component, so that the heat transfer medium can be quickly heated, thereby reducing the asphalt production time.

[0172] The oil pipe heating assembly is operated in the first heating mode, so that the oil pipe heating assembly can heat the asphalt, correspondingly increasing the temperature of the asphalt by 5. Specifically, when the oil pipe heating assembly is operated in the first heating mode, the oil pipe heating assembly

[0173] The first control valve of the pipe heating assembly is opened to a first opening, and the second control valve is closed, so that as long as the short oil pipe is heated, the heat transfer medium is centrally supplied to the short oil pipe, and the first opening is the maximum opening that the first control valve can open.

[0174] In the process of controlling the operation of the energy supply component and the oil pipe heating component, the temperature difference between the first temperature value and the lower limit of the 0-th temperature interval is obtained. When the temperature difference is less than or equal to the first temperature difference threshold,

[0175] It can be determined that the temperature of the asphalt in the second heating zone is low, but the difference from the target temperature is small. The multiple electric heating rods are controlled to operate at the first heating gear. Under the first heating gear, the heating power of the electric heating rods is a small heating power, so that the asphalt can be heated and the temperature of the asphalt can be increased to gradually reach the target temperature, while avoiding waste of resources.

[0176] 5 When the temperature difference is greater than the first temperature difference threshold, multiple electric heating rods are controlled to operate at the second heating gear. It can be determined that the temperature of the asphalt in the second heating zone is relatively low and the temperature difference from the target temperature is relatively large. Therefore, multiple electric heating rods are controlled to operate at the second heating gear. Under the second heating gear, the heating power of the electric heating rods is a relatively large heating power, so that the asphalt can be heated quickly, the temperature can be increased quickly, and the production needs can be met.

[0177] 0 If the first temperature value is greater than the upper limit of the first temperature range, it means that the current second heating

[0178] The asphalt temperature in the hot zone meets the requirements, and then the second temperature value of the asphalt in the second sub-heating zone in the first heating zone and the expected production of the asphalt are obtained to determine whether the asphalt in other sub-zones needs to be heated to meet the production requirements, that is, the operation of the oil pipe heating component is controlled according to the second temperature value and the expected production.

[0179] 5 The control method of the asphalt station proposed by the present invention can control the oil pipe

[0180] The pipe heating assembly and the electric heating rod are used for heating, and the energy supply assembly can be controlled to operate at a characteristic operating power to cooperate with the heating process of the oil pipe heating assembly to improve the heating efficiency. The number of heating components in the second heating zone is large, which can meet the requirements that the asphalt discharged from the discharge port quickly reaches the production temperature, improve the heating efficiency, and meet the use requirements. In addition, the present invention compares the temperature with the temperature range, rather than comparing it with a single temperature value, which can improve the rationality of the control process.

[0181] Fig. 27 The second flow chart of the control method of an asphalt station in one embodiment of the present invention is shown, wherein the control method includes:

[0182] S302: Obtaining a first temperature value of asphalt in the second heating zone;

[0183] S304: Obtaining the production temperature of asphalt;

[0184] S306: Determine a first temperature range according to the production temperature;

[0185] S308: Compare the first temperature value with the first temperature range;

[0186] S310: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0187] S312: When the estimated production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, comparing the second temperature value with the second temperature interval;

[0188] S314: When the second temperature value is less than the lower limit value of the second temperature range, controlling the oil pipe heating assembly to operate in the second heating mode;

[0189] S316: When the estimated production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, compare the second temperature value with the third temperature interval;

[0190] S318: According to the comparison result between the second temperature value and the third temperature range, the oil guide pipe heating component is controlled to operate.

[0191] In this embodiment, when the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, it proves that heating the asphalt in the second heating zone alone cannot meet the current production demand, while heating the second heating zone and the second sub-heating zone can meet the current asphalt production demand. Therefore, the temperature of the asphalt in the current second sub-heating zone is measured based on the comparison result of the obtained second temperature value and the second temperature range.

[0192] The present invention compares the second temperature value with a temperature range value, thereby avoiding too frequent control of the oil pipe heating assembly. Specifically, the second temperature range is determined based on the rated heating temperature in the second sub-heating zone. The rated heating temperature of the second sub-heating zone is a high temperature value allowed for asphalt in the second heating zone. The difference between the second temperature range and the asphalt production temperature is not large, within the range of plus or minus five degrees Celsius, so that the temperature comparison result can meet the accurate judgment of the asphalt heating demand and realize reasonable control of the oil pipe heating assembly.

[0193] When the second temperature value is less than the lower limit of the second temperature interval, it indicates that the asphalt temperature in the second sub-heating zone is relatively low and needs to be heated to a certain extent, so the oil pipe heating component is controlled to operate in the second heating mode to heat the asphalt accordingly. Specifically, the second heating mode includes the first control valve of the oil pipe heating component opening to a second opening degree and the second control valve closing, so that the oil pipe heating component only heats the second sub-heating zone to avoid waste of resources. Specifically, when the oil pipe is heated in the second heating mode, its heating capacity is less than that in the first heating mode.

[0194] When the expected production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, it is proved that heating only the second heating zone and the second sub-heating zone cannot meet the production volume requirements, and all areas in the asphalt tank need to be heated. Compare the second temperature value with the third temperature interval; according to the comparison result of the second temperature value and the third temperature interval, control the operation of the oil pipe heating component to meet the production needs.

[0195] Fig.28 The third flow chart of the control method of an asphalt station in one embodiment of the present invention is shown, wherein the control method includes:

[0196] S402: Obtaining a first temperature value of asphalt in the second heating zone;

[0197] S404: Obtaining the production temperature of asphalt;

[0198] S406: Determine a first temperature range according to the production temperature;

[0199] S408: Compare the first temperature value with the first temperature range;

[0200] S410: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0201] S412: When the estimated production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, compare the second temperature value with the third temperature interval;

[0202] S414: When the second temperature value is less than the lower limit value of the third temperature range, controlling the oil pipe heating assembly to operate in the first heating mode;

[0203] S416: When the second temperature value is greater than the upper limit of the third temperature interval and less than the lower limit of the second temperature interval, controlling the oil guide pipe heating assembly to operate in the third heating mode;

[0204] S418: When the second temperature value is greater than an upper limit value of the second temperature range, the oil guide pipe heating assembly is controlled to operate in a fourth heating mode.

[0205] When the second temperature value is less than the lower limit of the third temperature interval, the oil guide pipe heating component is controlled to operate in the first heating mode. When the second temperature value is less than or equal to the third temperature threshold, it means that the current temperature of the asphalt in the second sub-heating zone is relatively low and the asphalt in the second sub-heating zone needs to be heated intensively. Therefore, the heating component is controlled to operate in the first heating mode and heat with high power to heat the asphalt in the second sub-heating zone in a short time.

[0206] When the second temperature value is greater than the upper limit of the third temperature interval and less than the lower limit of the second temperature interval, it means that the current temperature of the asphalt in the second sub-heating zone is more suitable. The oil pipe heating component is controlled to operate in the third heating mode to heat the asphalt more appropriately.

[0207] When the second temperature value is greater than the upper limit of the second temperature interval, it indicates that the temperature of the asphalt in the second heating zone is high enough, and the oil pipe heating assembly is controlled to operate in the fourth heating mode, just to keep the asphalt from being completely cooled. By operating in the fourth heating mode, the asphalt in the second sub-heating zone is prevented from being burned, and at the same time, the asphalt in the first sub-heating zone where the second sub-pipe in the oil pipe heating assembly is located can also be heated, and the asphalt in the first sub-heating zone is raised to a suitable temperature, so that the asphalt does not need to be heated for too long when it is added to the second sub-heating zone.

[0208] In the case where the second temperature value is greater than the upper limit of the third temperature interval, and greater than the second temperature value is greater than the upper limit of the second temperature interval, the control method further includes: obtaining the third temperature value of the asphalt in the first sub-heating zone in the first heating zone, comparing the third temperature value with the fourth temperature threshold, and in the case where the third temperature value is greater than the fourth temperature threshold, it means that the temperature of the asphalt in the first sub-heating zone is high at this time, so the oil pipe heating component is controlled to stop running to avoid burning the asphalt in the first sub-heating zone. Specifically, the fourth temperature threshold is a floating value, which is within the temperature range of ±5°C compared to the allowable temperature of the asphalt in the first sub-heating zone. That is, the third temperature is compared with a temperature range value, thereby avoiding too frequent control of the heating component.

[0209] Fig.29 A fourth flow chart of a control method for an asphalt station in one embodiment of the present invention is shown, wherein the control method comprises:

[0210] S502: Obtaining a first temperature value of asphalt in the second heating zone;

[0211] S504: Obtaining the production temperature of asphalt;

[0212] S506: Determine a first temperature range according to the production temperature;

[0213] S508: Compare the first temperature value with the first temperature range;

[0214] S510: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0215] S512: When the estimated production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, comparing the second temperature value with the stirrer start temperature value;

[0216] S514: When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, control the agitator of the asphalt tank to start and run at the first speed;

[0217] S516: When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is less than or equal to the second temperature difference threshold, control the agitator of the asphalt tank to start and run at a second speed.

[0218] The present invention takes into account that if the asphalt is simply heated, the asphalt far away from the oil pipe heating component will inevitably be less affected by thermal radiation and have a lower temperature, while the asphalt close to the oil pipe heating component will be more affected by thermal radiation, which will cause some asphalt temperatures to be very high and some asphalt temperatures to be lower, affecting the heating effect. Therefore, the asphalt needs to flow so that each part of the asphalt can be heated evenly.

[0219] Therefore, the present invention sets an agitator in the second sub-heating zone inside the asphalt tank, and when the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, the control method also includes: comparing the second temperature value with the agitator start-up temperature value. By comparing the second temperature value with the agitator start-up temperature value, the start-up timing of the agitator can be accurately determined to avoid damage to the agitator.

[0220] When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, it means that the asphalt can be stirred, so the agitator of the asphalt tank is controlled to be turned on and run at the first speed. When the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, it means that the asphalt can be stirred, so the agitator of the asphalt tank is controlled to be turned on and run at the first speed. The first speed is a relatively high speed. When the difference between the second temperature value and the agitator start-up temperature value is greater than the second temperature difference threshold, the stirring resistance of the asphalt is small, so a high speed is used for stirring, which not only makes the asphalt flow, but also allows the asphalt to contact the oil guide pipe heating component, thereby improving the heat exchange efficiency.

[0221] When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is less than or equal to the second temperature difference threshold, although the asphalt has a certain temperature and can be stirred, the stirring resistance is still large. Therefore, stirring at a low speed can not only make the asphalt flow, so that the asphalt can contact the oil guide pipe heating assembly to increase the heat exchange, but also avoid damage to the agitator.

[0222] Fig.30 The fifth flow chart of the control method of an asphalt station in one embodiment of the present invention is shown, wherein the control method includes:

[0223] S602: Obtaining a first temperature value of asphalt in the second heating zone;

[0224] S604: Obtaining the production temperature of asphalt;

[0225] S606: Determine a first temperature range according to the production temperature;

[0226] S608: Compare the first temperature value with the first temperature range;

[0227] S610: When the first temperature value is less than the lower limit value of the first temperature interval, control the energy supply component to operate at the first operating power, control the first control valve to open a first opening, control the second control valve to close, and obtain a temperature difference between the first temperature value and the lower limit value of the first temperature interval;

[0228] S612: When the temperature difference is less than or equal to the first temperature difference threshold, control the plurality of electric heating rods to operate at the first heating gear;

[0229] S614: When the temperature difference is greater than the first temperature difference threshold, controlling the plurality of electric heating rods to operate at the second heating gear;

[0230] S616: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0231] S618: Control the operation of the oil pipe heating component according to the second temperature value and the estimated production volume.

[0232] In this embodiment, controlling the oil pipe heating assembly to operate in the first heating mode specifically includes: controlling the first control valve to open a first opening, and controlling the second control valve to close, wherein the first opening is an opening of the first control valve fully opened.

[0233] Fig.31 The sixth flow chart of the control method of an asphalt station in one embodiment of the present invention is shown, wherein the control method includes:

[0234] S702: Obtaining a first temperature value of asphalt in the second heating zone;

[0235] S704: Obtaining the production temperature of asphalt;

[0236] S706: Determine a first temperature range according to the production temperature;

[0237] S708: Compare the first temperature value with the first temperature range;

[0238] S710: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0239] S712: When the estimated production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, comparing the second temperature value with the second temperature interval;

[0240] S714: When the second temperature value is less than the lower limit of the second temperature range, control the first control valve to open to a second opening degree, control the second control valve to close, and control the energy supply component to operate at a second operating power;

[0241] S716: When the estimated production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, compare the second temperature value with the third temperature interval;

[0242] S718: According to the comparison result between the second temperature value and the third temperature range, the oil pipe heating component is controlled to operate.

[0243] In this embodiment, controlling the oil pipe heating assembly to operate in the second heating mode specifically includes: controlling the first control valve to open a second opening, and controlling the second control valve to close. Specifically, the second opening corresponds to an opening at which, at the current opening, the volume and flow rate of oil entering the first sub-pipe can enable the temperature of the asphalt in the second sub-heating zone to be regulated to an optimal temperature.

[0244] Furthermore, when the second temperature value is less than the lower limit of the second temperature range, it also includes controlling the energy supply component to operate at a second operating power. Specifically, the second operating power is a power value set independently by the user.

[0245] Fig.32 FIG. 7 shows a flow chart of a control method for an asphalt station in an embodiment of the present invention, wherein the control method includes:

[0246] S802: Obtaining a first temperature value of asphalt in the second heating zone;

[0247] S804: Obtaining the production temperature of asphalt;

[0248] S806: Determine a first temperature range according to the production temperature;

[0249] S808: Compare the first temperature value with the first temperature range;

[0250] S810: When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt;

[0251] S812: When the estimated production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, compare the second temperature value with the third temperature interval;

[0252] S814: When the second temperature value is less than the lower limit value of the third temperature range, control the first control valve to open to a first opening degree, control the second control valve to close, and control the energy supply component to operate at a first operating power;

[0253] S816: When the second temperature value is greater than the upper limit of the third temperature interval and less than the lower limit of the second temperature interval, control the first control valve to open the second opening, control the second control valve to open the third opening, and control the energy supply component to operate at the first operating power;

[0254] S818: When the second temperature value is greater than the upper limit value of the second temperature range, the first control valve is controlled to be closed, the second control valve is controlled to be opened to a fourth opening, and the energy supply component is controlled to operate at a second operating power.

[0255] In this embodiment, controlling the oil pipe heating assembly to operate in the third heating mode specifically includes: controlling the second control valve to open to a third opening degree, where the third opening degree is an opening degree at which the valve port of the second control valve is fully opened.

[0256] Controlling the oil pipe heating component to operate in the fourth heating mode specifically includes: controlling the first control valve to close, and controlling the second control valve to open a fourth opening, the fourth opening being the opening of the second control valve that enables the flow rate and volume of oil entering the second sub-pipe, and enables the asphalt in the area heated by the second sub-pipe to reach the optimal asphalt temperature value set by the user, and is an opening value set by the user.

[0257] Furthermore, when the second temperature value is less than the lower limit of the second temperature range, it also includes controlling the energy supply component to operate at a second operating power. Specifically, the second operating power is a power value set independently by the user.

[0258] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0259] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0260] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An asphalt tank, characterized in that: include: A tank body, used to contain asphalt, the tank body being provided with a feed inlet and a discharge outlet; A plurality of partitions are arranged at intervals inside the tank body to divide the inside of the tank body into a plurality of processing zones that are interconnected, wherein the plurality of processing zones include a first heating zone and a second heating zone, and the second heating zone is close to the discharge port; An oil pipe heating assembly is disposed in the first heating zone and the second heating zone, and the oil pipe heating assembly can operate in a first heating mode, a second heating mode, a third heating mode or a fourth heating mode to heat the asphalt; A plurality of electric heating rods are located in the second heating zone and are arranged on the inner wall of the tank body where the discharge port is provided. The plurality of electric heating rods are distributed around the discharge port and extend in a direction away from the discharge port. The electric heating rod can be operated at a first heating gear or a second heating gear to heat the asphalt in the second heating zone; The first heating zone comprises: A first sub-heating zone, close to the feed inlet and connected to the feed inlet; a second sub-heating zone, located between the first sub-heating zone and the second heating zone; a third sub-heating zone, located at a side of the first sub-heating zone away from the second sub-heating zone; The oil pipe heating assembly comprises: a first sub-tube, which is arranged through the second heating zone and the second sub-heating zone, and the interior of the first sub-tube is capable of allowing a heat transfer medium to flow; a second sub-tube, a portion of the second sub-tube is disposed through the second heating zone, the first sub-heating zone, the second sub-heating zone and the third sub-heating zone, another portion of the second sub-tube is disposed through the second heating zone, the first sub-heating zone and the second sub-heating zone, the interior of the second sub-tube can allow the heat transfer medium to flow, and the second sub-tube is independent of the first sub-tube; The asphalt tank also includes: a temperature detection component, which is arranged in the tank body and is used to detect the temperature of the asphalt in the first heating zone and the second heating zone respectively; the temperature detection component includes a plurality of temperature sensors, wherein the plurality of temperature sensors are arranged in different processing zones, thereby detecting the temperature of the asphalt in the processing zone.

2. The asphalt tank according to claim 1, characterized in that: The oil pipe heating assembly also includes: A tee pipe is arranged outside the tank body, the liquid inlet of the tee pipe is used to inject the heat transfer medium into the tee pipe, the first liquid outlet of the tee pipe is connected to the first sub-pipe, and the second liquid outlet of the tee pipe is connected to the second sub-pipe; a first control valve, disposed on the three-way pipe, for controlling the connection and disconnection between the first liquid outlet and the first sub-pipe, the first control valve being capable of opening a first opening or a second opening, the first opening being greater than the second opening; The second control valve is arranged on the three-way pipe and is used to control the connection and disconnection between the second liquid outlet and the second sub-pipe. The second control valve can be opened to a third opening or a fourth opening, and the third opening is greater than the fourth opening.

3. The asphalt tank according to claim 1, characterized in that: The asphalt tank also includes an agitator, and the agitator includes: A mounting frame, detachably disposed on the inner wall of the tank body and located in the second sub-heating zone; A blade is rotatably disposed on the mounting frame; The air guide cover is arranged on the mounting frame and is located on the peripheral side of the blade.

4. The asphalt tank according to any one of claims 1 to 3, characterized in that: Asphalt tanks also include: A plurality of support plates are arranged inside the tank body, and the oil guide pipe heating assembly is passed through the support plates; The support plate includes a first side and a second side relative to each other, and a third side and a fourth side relative to each other, wherein the second side is connected to the inner wall of the tank body, and a plurality of protrusions are respectively formed on the third side and the fourth side, with a gap between two adjacent protrusions, and the protrusions are connected to the inner wall of the tank body.

5. An asphalt station, characterized in that: include: An asphalt tank as claimed in any one of claims 1 to 4; as well as The energy supply component is used to heat the heat-conducting medium, and the energy supply component is connected to the oil-conducting pipe heating component.

6. A control method for an asphalt station, characterized in that: For the asphalt station according to claim 5, the control method comprises: Acquiring a first temperature value of the asphalt in the second heating zone; Obtaining the production temperature of the asphalt; Determining a first temperature interval according to the production temperature; comparing the first temperature value with a first temperature interval; When the first temperature value is less than the lower limit value of the first temperature interval, controlling the energy supply component to operate at a first operating power, controlling the oil guide pipe heating component to operate in a first heating mode, and obtaining a temperature difference between the first temperature value and the lower limit value of the first temperature interval; When the temperature difference is less than or equal to a first temperature difference threshold, controlling the plurality of electric heating rods to operate at a first heating gear; When the temperature difference value is greater than the first temperature difference threshold, controlling the plurality of electric heating rods to operate at a second heating gear; When the first temperature value is greater than the upper limit value of the first temperature interval, obtaining a second temperature value of the asphalt in the second sub-heating zone in the first heating zone and an estimated production amount of the asphalt; The oil pipe heating component is controlled to operate according to the second temperature value and the expected production volume.

7. The control method of the asphalt station according to claim 6, characterized in that: The step of controlling the operation of the oil pipe heating assembly according to the second temperature value and the estimated production volume specifically includes: When the expected production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and greater than the volume of the second heating zone, comparing the second temperature value with the second temperature interval; When the second temperature value is less than a lower limit value of the second temperature range, controlling the oil guide pipe heating component to operate in the second heating mode; When the estimated production volume is greater than the sum of the volume of the second heating zone and the volume of the second sub-heating zone, comparing the second temperature value with a third temperature interval; The oil guide pipe heating assembly is controlled to operate according to a comparison result between the second temperature value and the third temperature range.

8. The control method of the asphalt station according to claim 7, characterized in that: According to the comparison result between the second temperature value and the third temperature range, controlling the oil pipe heating component to operate specifically includes: When the second temperature value is less than the lower limit value of the third temperature range, controlling the oil guide pipe heating component to operate in a first heating mode; When the second temperature value is greater than the upper limit value of the third temperature interval and less than the lower limit value of the second temperature interval, controlling the oil guide pipe heating assembly to operate in a third heating mode; When the second temperature value is greater than an upper limit value of the second temperature range, the oil conduit heating assembly is controlled to operate in a fourth heating mode.

9. The control method of the asphalt station according to claim 7, characterized in that: In the case where the estimated production volume is less than or equal to the sum of the volume of the second heating zone and the volume of the second sub-heating zone, and is greater than the volume of the second heating zone, the control method further includes: comparing the second temperature value with the stirrer on temperature value; When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is greater than a second temperature difference threshold, controlling the agitator of the asphalt tank to start and run at a first speed; When the second temperature value is greater than the agitator start-up temperature value, and the difference between the second temperature value and the agitator start-up temperature value is less than or equal to the second temperature difference threshold, controlling the agitator of the asphalt tank to start and run at a second speed; The second rotation speed is lower than the first rotation speed.

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