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Heavy oil railway unloading system capable of predicting unloading completion

A railway and heavy oil technology, applied in special distribution devices, packaging, distribution devices, etc., can solve problems such as waste of energy, lack of operational predictability, unfavorable safe and stable operation, etc.

Active Publication Date: 2020-10-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not conducive to the long-term safe and stable operation of the pump to judge whether the heavy oil unloading has been completed by the sound of the pump generated when the pump is evacuated or the pressure gauge at the pump outlet returns to zero for a long time, which is not conducive to the safe and stable operation of the pump for a long time; wasted energy problem

Method used

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  • Heavy oil railway unloading system capable of predicting unloading completion
  • Heavy oil railway unloading system capable of predicting unloading completion
  • Heavy oil railway unloading system capable of predicting unloading completion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a heavy oil railway unloading system capable of predicting the completion of unloading, including a number of unloading crane pipes 1 arranged on the railway unloading platform; the top oil receiving port of the unloading crane pipe 1 is provided with a quick joint, that is, the unloading crane pipe 1 Connect with the oil unloading valve on the railway tank car 0 through a quick connector;

[0037] The heavy oil outlet of the unloading crane pipe 1 is connected to the oil collection pipe 2 laid along the railway unloading line and blocked at both ends. For a pipeline with a relatively large diameter on the stack, the oil manifold 2 maintains a level difference with the railway tanker 2, which acts as an oil storage container to ensure that the heavy oil in the railway tanker 2 flows to the oil manifold 2 by gravity;

[0038] The lowest point of the oil collection pipe 2 is connected to the inlet of the oil transfer pump group 4 through the oi...

Embodiment 2

[0071] On the basis of Example 1, a safety valve is installed at the outlet of each oil transfer pump to meet the requirements of relevant regulations for safety pressure relief measures for equipment and pipelines that may be overpressured to ensure safe operation;

[0072] The oil transfer pump is connected with a frequency conversion motor, that is, the oil transfer pump is driven by a frequency conversion motor to realize the frequency conversion speed regulation of the oil transfer pump;

[0073] An outlet pressure sensor is arranged on the outlet pipeline of the oil transfer pump; an inlet pressure sensor is arranged on the inlet pipeline of the oil transfer pump;

[0074] Both the inlet pressure sensor and the outlet pressure sensor are connected in communication with the controller, and the controller is electrically connected with the variable frequency motor.

[0075] When the outlet pressure of the oil transfer pump detected by the outlet pressure sensor reaches the...

Embodiment 3

[0078] On the basis of embodiment 1 or embodiment 2, the oil collecting pipe 2 is provided with some oil pouring ports 201, and the oil pouring valve 202 is set on the described oil pouring port 201; the setting of the oil pouring port 201 is convenient for collecting leaked oil Residual oil enters oil manifold 2.

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Abstract

The invention discloses a heavy oil railway unloading system capable of predicting unloading completion. The heavy oil railway unloading system comprises a unloading crane pipe; a heavy oil outlet ofthe unloading crane pipe communicates with an oil collecting pipe; a lowest point of the oil collecting pipe is connected with an inlet of an oil transfer pump group through an oil conduit, and an outlet of the oil transfer pump group is connected with a destination oil tank through an oil delivery pipe; the oil collecting pipe has a certain slope in the direction of the oil conduit, and the partconnecting the oil conduit with the oil collecting pipe is a vertical pipe; the connection between the oil collecting pipe and the vertical pipe is provided with a double-flange liquid level gauge; and a low pressure side of the double-flange liquid level gauge is connected with the top of the inner wall of the lowest point of the oil collecting pipe, and a high pressure side of the double-flangeliquid level gauge is connected with a pressure measuring point in the vertical pipe. According to the invention, the pre-judgment of the completion of the unloading of the heavy oil in the oil collecting pipe can be realized, the completion of the unloading is not judged by pumping a machine pump any more, but judged by the liquid level of the heavy oil when the unloading is about to being completed, measures are taken in advance to avoid pumping the machine, and the long-term safe operation of the equipment is ensured.

Description

technical field [0001] The invention belongs to the technical field of heavy oil railway unloading, and in particular relates to a heavy oil railway unloading system capable of predicting the completion of unloading. Background technique [0002] When the existing heavy oil such as crude oil, residual oil, fuel oil and oil slurry is unloaded on the railway, the heavy oil of the railway tank car is pumped out by the unloading pump to realize the unloading. Among them, the railway tank car can be an ordinary tank car or a tank container. [0003] Since tank trucks loaded with heavy oil are standardized equipment, it is impossible to install liquid level gauges to indicate the progress of heavy oil unloading. Moreover, even if the installation is allowed, it is difficult to visually observe the liquid level of heavy oil through liquid level gauges such as glass plates. Therefore, when unloading the heavy oil railway, it can only be judged whether the heavy oil unloading has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B67D7/78B67D7/42B67D7/66B67D7/32B67D7/06B67D7/16
CPCB67D7/78B67D7/42B67D7/66B67D7/3236B67D7/06B67D7/16
Inventor 梁峰赵培录曹东学杜博华孙浩周建华赵明星孙明立
Owner CHINA PETROLEUM & CHEM CORP
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