阅读说明：本技术 一种能够预判卸车完成的重油铁路卸车系统 (Heavy oil railway unloading system capable of prejudging completion of unloading ) 是由 梁峰 赵培录 曹东学 杜博华 孙浩 周建华 赵明星 孙明立 于 2020-08-12 设计创作，主要内容包括：本发明公开了一种能够预判卸车完成的重油铁路卸车系统,包括卸车鹤管；卸车鹤管的重油出口连通至汇油管；汇油管的最低点通过导油管与转油泵组的入口相连,转油泵组的出口通过输油管与目的油罐相连；汇油管具有一定坡向导油管方向的坡度,导油管与汇油管相连的部分为竖直管；汇油管与竖直管的连接处设置双法兰液位计；所述双法兰液位计的低压侧与汇油管最低点的内壁顶部相连,所述双法兰液位计的高压侧与竖直管内的取压点相连。本发明能够实现对汇油管内重油完成卸车进行预判,不再以机泵抽空判断是否完成卸车,而是通过卸车即将完成时的重油的液位判断卸车是否即将完成,提前采取措施,避免机泵抽空,保障设备长周期安全运行。(The invention discloses a heavy oil railway unloading system capable of prejudging the completion of unloading, which comprises an unloading crane pipe; a heavy oil outlet of the unloading crane pipe is communicated to the oil collecting pipe; the lowest point of the oil collecting pipe is connected with an inlet of the oil transfer pump set through an oil guide pipe, and an outlet of the oil transfer pump set is connected with a target oil tank through an oil conveying pipe; the oil gathering pipe has a certain slope towards the direction of the oil guiding pipe, and the part of the oil guiding pipe connected with the oil gathering pipe is a vertical pipe; a double-flange liquid level meter is arranged at the joint of the oil collecting pipe and the vertical pipe; the low pressure side of the double-flange liquid level meter is connected with the top of the inner wall at the lowest point of the oil collecting pipe, and the high pressure side of the double-flange liquid level meter is connected with a pressure taking point in the vertical pipe. The invention can realize the prejudgment of the completion of unloading of the heavy oil in the oil gathering pipe, judges whether the unloading is completed or not by the evacuation of the pump, judges whether the unloading is to be completed or not by the liquid level of the heavy oil when the unloading is to be completed, takes measures in advance, avoids the evacuation of the pump and ensures the long-period safe operation of equipment.)

1. A heavy oil railway unloading system capable of prejudging the completion of unloading comprises a plurality of unloading crane pipes arranged on a railway unloading platform; an oil receiving port at the top end of the unloading crane pipe is provided with a quick connector; it is characterized in that the utility model is characterized in that,

a heavy oil outlet of the unloading crane pipe is communicated to an oil collecting pipe which is laid along a railway unloading line and two ends of which are blocked, and the oil collecting pipe is positioned below an oil unloading valve of a railway tank car;

the lowest point of the oil collecting pipe is connected with an inlet of a transfer oil pump set through an oil guide pipe, and an outlet of the transfer oil pump set is connected with a target oil tank through an oil conveying pipe;

the oil gathering pipe has a certain gradient towards the direction of the oil guiding pipe;

the part of the oil guide pipe connected with the oil collecting pipe is a vertical pipe;

a double-flange liquid level meter is arranged at the joint of the oil collecting pipe and the vertical pipe; the low pressure side of the double-flange liquid level meter is connected with the top of the inner wall at the lowest point of the oil collecting pipe, and the high pressure side of the double-flange liquid level meter is connected with a pressure taking point in the vertical pipe.

2. The heavy oil railway unloading system capable of anticipating completion of unloading according to claim 1, wherein the heavy oil outlet of the unloading arm is higher than the top of the corresponding position of the oil collecting pipe, and the heavy oil outlet of the unloading arm is communicated with the oil collecting pipe through a blocking valve.

3. A heavy oil railway unloading system capable of anticipating completion of unloading as claimed in claim 1 wherein said transfer pump unit is located at the lowest point of the lead pipe.

4. The heavy oil railway unloading system capable of prejudging the completion of unloading according to claim 1, wherein the oil transfer pump group comprises a plurality of oil transfer pumps arranged in parallel, and the oil transfer pumps are positive displacement pumps capable of oil-gas two-phase mixed conveying.

5. The heavy oil railway unloading system capable of prejudging the completion of unloading according to claim 1, wherein steam tracing is arranged on the oil collecting pipe, the oil guiding pipe, the inlet pipeline of the oil transfer pump set and the outlet pipeline of the oil transfer pump set.

6. The heavy oil railway unloading system capable of anticipating completion of unloading according to claim 1, wherein the outlet of each transfer pump is provided with a safety valve;

the oil transfer pump is connected with the variable frequency motor;

an outlet pressure sensor is arranged on an outlet pipeline of the oil transfer pump; an inlet pressure sensor is arranged on an inlet pipeline of the oil transfer pump;

and the inlet pressure sensor and the outlet pressure sensor are in communication connection with a controller, and the controller is electrically connected with the variable frequency motor.

7. The heavy oil railway unloading system capable of prejudging the completion of unloading according to claim 1, wherein a plurality of oil pouring ports are arranged on the oil collecting pipe, and oil pouring valves are arranged on the oil pouring ports.

8. A heavy oil railway unloading system capable of anticipating the completion of the unloading as claimed in claim 1 wherein each unloading arm is provided with a ground terminal connected to an electrostatic earth rail.

Technical Field

The invention belongs to the technical field of heavy oil railway unloading, and particularly relates to a heavy oil railway unloading system capable of prejudging the completion of unloading.

Background

When the existing heavy oil such as crude oil, residual oil, fuel oil, slurry oil and the like is unloaded from a railway, the heavy oil of a railway tank car is pumped out by an unloading pump to realize unloading. Wherein, the railway tank car can be a common tank car or a tank container.

Since the tank truck loaded with heavy oil is standardized equipment, it is impossible to install a level gauge indicating the unloading progress of heavy oil, and even if the installation is allowed, it is difficult to visually observe the level of heavy oil by means of the level gauge such as a glass plate. Therefore, when the heavy oil is unloaded from the railway, whether the unloading of the heavy oil is finished can be judged only by the bombing sound generated when the unloading pump is emptied. However, whether heavy oil unloading is finished or not is judged by means of machine pump sound formed when the pump is emptied or zero return of a pressure gauge at the outlet of the pump frequently for a long time, and long-period safe and stable operation of the pump is not facilitated; meanwhile, the operation prejudgement is lacked, and the problems of ineffective pump power consumption and energy waste exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a heavy oil railway unloading system capable of prejudging the completion of unloading.

In order to achieve the purpose, the invention adopts the following technical scheme:

a heavy oil railway unloading system capable of prejudging the completion of unloading comprises a plurality of unloading crane pipes arranged on a railway unloading platform; an oil receiving port at the top end of the unloading crane pipe is provided with a quick connector;

a heavy oil outlet of the unloading crane pipe is communicated to an oil collecting pipe which is laid along a railway unloading line and two ends of which are blocked, and the oil collecting pipe is positioned below an oil unloading valve of a railway tank car;

the lowest point of the oil collecting pipe is connected with an inlet of a transfer oil pump set through an oil guide pipe, and an outlet of the transfer oil pump set is connected with a target oil tank through an oil conveying pipe;

the oil gathering pipe has a certain gradient towards the direction of the oil guiding pipe;

the part of the oil guide pipe connected with the oil collecting pipe is a vertical pipe;

a double-flange liquid level meter is arranged at the joint of the oil collecting pipe and the vertical pipe; the low pressure side of the double-flange liquid level meter is connected with the top of the inner wall at the lowest point of the oil collecting pipe, and the high pressure side of the double-flange liquid level meter is connected with a pressure taking point in the vertical pipe.

Preferably, the heavy oil outlet of the unloading oil filling riser is higher than the top of the corresponding position of the oil collecting pipe, and the heavy oil outlet of the unloading oil filling riser is communicated with the oil collecting pipe through a closing valve.

Preferably, the oil transfer pump set is arranged at the lowest point of the oil guide pipe.

Preferably, the oil transfer pump set comprises a plurality of oil transfer pumps which are connected in parallel, and the oil transfer pumps are positive displacement pumps capable of oil-gas two-phase mixed conveying.

Preferably, the steam tracing is arranged on the oil collecting pipe, the oil guide pipe, an inlet pipeline of the oil transfer pump set and an outlet pipeline of the oil transfer pump set.

Preferably, the outlet of each oil transfer pump is provided with a safety valve;

the oil transfer pump is connected with the variable frequency motor;

an outlet pressure sensor is arranged on an outlet pipeline of the oil transfer pump; an inlet pressure sensor is arranged on an inlet pipeline of the oil transfer pump;

and the inlet pressure sensor and the outlet pressure sensor are in communication connection with a controller, and the controller is electrically connected with the variable frequency motor.

Preferably, a plurality of oil pouring ports are arranged on the oil collecting pipe, and oil pouring valves are arranged on the oil pouring ports.

Preferably, a ground terminal is provided at each unloading arm for connection to an electrostatic ground rail.

The invention has the beneficial effects that:

the invention can prejudge the arrangement of the oil gathering pipe, the oil guide pipe and the double-flange liquid level meter at the joint of the oil gathering pipe and the oil guide pipe in the heavy oil railway unloading system for completing unloading, can prejudge whether the unloading is completed or not by using the pump evacuation instead of judging whether the unloading is to be completed or not by using the liquid level of the heavy oil when the unloading is to be completed, takes measures in advance to avoid the pump evacuation and ensure the long-period safe operation of equipment.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic structural view of a heavy oil railway unloading system of the present invention capable of anticipating completion of unloading;

FIG. 2 is a partial schematic view of the vertical pipe at one end of the oil manifold according to the present invention;

FIG. 3 is a partial schematic view of the vertical pipe in the middle section of the manifold according to the present invention;

wherein, 0-rail tank car;

1-unloading crane pipe, 101-isolating valve, 2-gathering oil pipe, 201-oil pouring port, 202-oil pouring valve, 3-oil guide pipe, 301-vertical pipe, 4-oil transfer pump group, 5-oil conveying pipe and 6-double-flange liquid level meter.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present invention, terms such as "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and are not intended to refer to any components or elements of the present invention, and should not be construed as limiting the present invention.

In the present invention, terms such as "connected" and "connecting" should be interpreted broadly, and mean either a fixed connection or an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.

The invention is further illustrated with reference to the following figures and examples.