Asphalt conveying pipeline system

Abstract

The utility model belongs to the technical field of liquid pipeline conveying, and relates to an asphalt conveying pipeline system which comprises an asphalt tower, the asphalt tower is connected with a forming machine through a first conveying pipeline, a jacket pipeline is arranged on the first conveying pipeline, the side faces of the two ends of the jacket pipeline are communicated through a heat conduction oil pipe, and an oil pump is arranged on the heat conduction oil pipe. The first conveying pipeline is connected with an auxiliary line cooling assembly. When the initial temperature is too high, the asphalt product can be subjected to heat exchange and cooling through the heat exchanger, the heat preservation effect on the whole conveying pipeline is achieved through waste heat, and if the temperature is too low, the pipeline can be heated through heat conduction oil, so that the temperature of the whole conveying pipeline is guaranteed, and the service life of the conveying pipeline is prolonged while the use requirement is met. The energy consumption is reduced to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid pipeline transportation, and relates to an asphalt transportation pipeline system. Background Art

[0002] Asphalt is a dark brown complex mixture composed of hydrocarbon compounds with different molecular weights and their non-metallic derivatives, and is a kind of high-viscosity organic liquid. During the production, processing, transfer and transportation of asphalt, it is necessary to ensure that the asphalt is at a certain temperature. Excessive temperature will cause damage to the transportation pipeline, while too low temperature will increase the fluid viscosity and reduce the transportation efficiency. For the existing Chinese invention patent with the publication number of CN104405996A, the liquid pipeline heating and insulation system consists of a number of heating and insulation bodies that can be tightly wrapped outside the pipeline, which are composed of carbon fiber heating wires and insulation sleeves, and a portable single-input multi-output power transformer control box.

[0003] The prior art has the following technical defects:

[0004] The above technical solution can realize the heat preservation and heating functions of the transportation pipeline. If the initial pipeline input temperature is too high, the cooling effect on the pipeline cannot be achieved. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an asphalt transportation pipeline system.

[0006] The asphalt transportation pipeline system described in the utility model includes an asphalt tower. The asphalt tower is connected to a molding machine through a first transportation pipeline. A jacket pipeline is provided on the first transportation pipeline. The two ends of the jacket pipeline are connected and communicated through a heat conduction oil pipeline. An oil pump is provided on the heat conduction oil pipeline. A sub-line cooling component is connected to the first transportation pipeline.

[0007] Working Process or Principle

[0008] During operation, asphalt enters the molding machine from the asphalt tower through the first transportation pipeline and the jacket pipeline. The heat conduction oil in the jacket pipeline exchanges heat at the front end of the first transportation pipeline, flows through the heat conduction oil pipeline in the opposite direction to the first transportation pipeline, and transports the heated heat conduction oil from the end of the first transportation pipeline, thus ensuring the temperature stability of the asphalt during transportation. If the temperature at the outlet of the asphalt tower is too high, it can be cooled and transported through the sub-line cooling component to avoid damage to the pipeline caused by excessive temperature.

[0009] The jacket pipeline includes an asphalt transportation cavity communicated with the first transportation pipeline and a heat conduction oil cavity wrapped outside the asphalt transportation cavity.

[0010] The described secondary line cooling component includes a second delivery pipe connected to the asphalt tower. The second delivery pipe passes through the heat transfer oil chamber inside the jacketed pipe and is connected to the asphalt delivery chamber. A heat exchanger is provided on the second delivery pipe. One end of the heat exchanger is connected to the heat transfer oil chamber inside the jacketed pipe, and the other end of the heat exchanger is connected to the heat transfer oil pipe. When the temperature at the outlet of the asphalt tower is too high, the asphalt flows out simultaneously through the first delivery pipe and the second delivery pipe. The second delivery pipe uses the heat exchanger to cool the asphalt in the pipe, and then mixes it with the asphalt in the first delivery pipe inside the jacketed pipe, thereby achieving the cooling of the asphalt.

[0011] A valve is provided on the described second delivery pipe to select whether heat exchange is required through the second delivery pipe based on the outlet temperature.

[0012] An electric heating device is provided on the heat transfer oil pipe. When the initial temperature at the outlet of the asphalt tower is low, the heat transfer oil cannot be effectively heated by the self-heat of the asphalt, so that the latter half of the jacketed pipeline cannot effectively play the functions of heat preservation and heating, and further the temperature guarantee of the asphalt during transportation cannot be achieved. The electric heating device can be used to heat the heat transfer oil in the low-temperature state to achieve the temperature adjustment of the asphalt.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] When the initial temperature is too high, the present utility model can exchange heat and cool the asphalt product through the heat exchanger, and use the waste heat to achieve the heat preservation effect of the overall transportation pipeline. If the temperature is too low, it can also heat the pipeline through the heat transfer oil, thereby ensuring the temperature of the overall transportation pipeline, ensuring that while meeting the use requirements, the energy consumption is minimized to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present utility model,

[0016] Figure 2 is a schematic structural diagram of the jacketed pipe in an embodiment of the present utility model.

[0017] In the figure: 1, asphalt tower; 2, second delivery pipe; 3, heat transfer oil pipe; 4, electric heating device; 5, oil pump; 6, forming machine; 7, jacketed pipe; 8, heat exchanger; 9, first delivery pipeline; 10, heat transfer oil chamber; 11, asphalt delivery chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Embodiment 1

[0019] As Figures 1 to 2As shown in the figure, the asphalt conveying pipeline system of the present utility model includes an asphalt tower 1. The asphalt tower 1 is connected to a forming machine 6 through a first conveying pipeline 9. A jacket pipeline 7 is provided on the first conveying pipeline 9. The two side ends of the jacket pipeline 7 are connected and communicated through a heat-conducting oil pipeline 3. An oil pump 5 is provided on the heat-conducting oil pipeline 3. A secondary line cooling component is connected to the first conveying pipeline 9; the jacket pipeline 7 includes an asphalt conveying cavity 11 connected and communicated with the first conveying pipeline 9 and a heat-conducting oil cavity 10 wrapped outside the asphalt conveying cavity 11; the secondary line cooling component includes a second conveying pipe 2 connected and communicated with the asphalt tower 1. The second conveying pipe 2 penetrates through the heat-conducting oil cavity 10 inside the jacket pipeline 7 and is connected and communicated with the asphalt conveying cavity 11. A heat exchanger 8 is provided on the second conveying pipe 2. One end of the heat exchanger 8 is connected and communicated with the heat-conducting oil cavity 10 inside the jacket pipeline 7, and the other end of the heat exchanger 8 is connected and communicated with the heat-conducting oil pipeline 3. When the outlet temperature of the asphalt tower 1 is too high, the asphalt flows out through the first conveying pipe and the second conveying pipe 2 at the same time. The second conveying pipe 2 uses the heat exchanger 8 to cool the asphalt in the pipe, and then mixes it with the asphalt in the first conveying pipe in the jacket pipeline 7, so as to realize the cooling of the asphalt; a valve is provided on the second conveying pipe 2, and whether to perform heat exchange through the second conveying pipe 2 is selected according to the outlet temperature; an electric heating device 4 is provided on the heat-conducting oil pipeline 3. When the initial temperature at the outlet of the asphalt tower 1 is relatively low, the heat-conducting oil cannot be effectively heated by the self-heat of the asphalt, so that the latter half of the jacket pipeline cannot effectively play the functions of heat preservation and heating, and further the temperature guarantee of the asphalt during the conveying process cannot be realized. The electric heating device 4 can be used to heat the heat-conducting oil in the low-temperature state to realize the temperature adjustment of the asphalt.

[0020] Working process or working principle:

[0021] During operation, the asphalt passes through the first conveying pipe and the jacket pipeline 7 from the asphalt tower 1 and enters the forming machine 6. The heat-conducting oil in the jacket pipeline 7 exchanges heat at the front end of the first conveying pipe and flows through the heat-conducting oil pipeline 3 in the opposite direction to the first conveying pipe, and conveys the heat-conducting oil with temperature from the end of the first conveying pipe, thus ensuring the stability of the asphalt temperature during the conveying process; when the outlet temperature of the asphalt tower 1 is too high, the asphalt flows out through the first conveying pipe and the second conveying pipe 2 at the same time. The second conveying pipe 2 uses the heat exchanger 8 to cool the asphalt in the pipe, and then mixes it with the asphalt in the first conveying pipe in the jacket pipeline 7, so as to realize the cooling of the asphalt.

[0022] The present utility model can exchange heat and cool the asphalt product through the heat exchanger 8 when the initial temperature is too high, and use the waste heat to achieve the heat preservation effect of the overall conveying pipeline. If the temperature is too low, it can also heat the pipeline through the heat-conducting oil, so as to ensure the temperature of the overall conveying pipeline, ensure to meet the use requirements while minimizing energy consumption to the greatest extent.

[0023] In the present utility model, the description of the direction and relative positional relationship of the structure, such as the description of front, back, left, right, up, and down, does not constitute a limitation to the present utility model and is only for convenience of description.

Claims

1. An asphalt delivery pipeline system, comprising an asphalt tower (1), wherein the asphalt tower (1) is connected to a molding machine (6) via a first delivery pipeline (9), characterized in that: The first delivery pipeline (9) is provided with a jacket pipeline (7), the two end sides of the jacket pipeline (7) are connected through a heat transfer oil pipe (3), the heat transfer oil pipe (3) is provided with an oil pump (5), and the first delivery pipeline (9) is connected to a secondary line cooling component.

2. The asphalt transportation pipeline system according to claim 1, characterized in that: The jacketed pipeline (7) comprises an asphalt delivery chamber (11) connected to the first delivery pipeline (9) and a heat transfer oil chamber (10) wrapped around the outside of the asphalt delivery chamber (11).

3. The asphalt delivery pipeline system according to claim 2, characterized in that: The secondary line cooling component comprises a second delivery pipe (2) connected to the asphalt tower (1), the second delivery pipe (2) passes through the heat transfer oil chamber (10) inside the jacket pipe (7) and is connected to the asphalt delivery chamber (11), a heat exchanger (8) is provided on the second delivery pipe (2), one end of the heat exchanger (8) is connected to the heat transfer oil chamber (10) inside the jacket pipe (7), and the other end of the heat exchanger (8) is connected to the heat transfer oil pipe (3).

4. The asphalt delivery pipeline system according to claim 3, characterized in that: The second delivery pipe (2) is provided with a valve.

5. The asphalt transportation pipeline system according to any one of claims 1 to 4, characterized in that: The heat-conducting oil pipe (3) is provided with an electric heating device (4).

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