CN204689633U - Hermetic type Unloading Device - Google Patents

Abstract

The key of the closed oil unloading device is: including the oil pipeline, the first valve, the filter, the second valve, the buffer pipeline, the centrifugal pump and the motor arranged in sequence from left to right. The shape of the buffer pipeline is L-shaped, and the upper end of the buffer pipeline is A breathing valve, a first liquid level gauge, a second liquid level gauge and an oil unloading control cabinet are arranged, and a baffle, a sewage outlet and a heat tracing pipe are arranged at the lower end of the buffer pipe. The device is equipped with a guided wave radar level gauge and a magnetic flap level gauge. The magnetic flap level gauge can monitor the liquid level height in real time. The oil unloading control cabinet controls the speed of the motor through the liquid level signal of the guided wave radar level gauge. , quickly recover the crude oil in the crude oil tanker to the large oil storage tank, and improve the efficiency of crude oil unloading; the top of the buffer pipeline is connected to the top of the oil storage tank through a flame arrester, so as to avoid the discharge of flammable and polluting gases in the crude oil into the atmosphere, which is safe and environmentally friendly ; The device has a simple structure, which not only improves the efficiency of crude oil unloading, but also is safe and environmentally friendly, and avoids the safety hazard of spontaneous combustion and explosion of crude oil.

Description

Closed oil unloading device

technical field

The utility model relates to the technical field of crude oil unloading, in particular to a closed oil unloading device.

Background technique

Petroleum is one of the important energy sources for industrial and agricultural production. On the one hand, the imbalance between oil production areas and sales areas, and on the other hand, the increasing demand for oil-based energy has led to an upward trend in the transportation volume of oil. At present, the tank truck pulls crude oil to the station to unload oil in an open way. Since crude oil is a mixture of oil, gas and water, polluting gas will volatilize and pollute the environment during the unloading process. Moreover, oil is flammable and explosive, and flammable gas in crude oil Random volatilization causes safety hazards. Viscous crude oil flows slowly, resulting in long unloading time and low efficiency, which brings a lot of trouble to crude oil unloading work. Therefore, how to improve oil unloading efficiency and avoid safety hazards while reducing environmental pollution has become a Urgent matter.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model designs a closed oil unloading device which can control the flow of crude oil, improve the efficiency of oil unloading and reduce environmental pollution.

The technical solution adopted by the utility model is that the closed oil unloading device, the key is: including the oil pipeline, the first valve, the filter, the second valve, the buffer pipeline, the centrifugal pump and the motor arranged in sequence from left to right, the described The shape of the buffer pipe is L-shaped, the upper end of the buffer pipe is provided with the first liquid level gauge, the second liquid level gauge and the oil unloading control cabinet, and the lower end of the buffer pipe is provided with a baffle plate, a sewage outlet and a heat tracing pipe.

A third valve and a bypass line are also arranged between the filter and the centrifugal pump.

The upper end of the buffer pipeline is also provided with a flame arrester.

The second liquid level gauge is a magnetic flap liquid level gauge.

The first liquid level gauge is a guided wave radar level gauge.

The filter is a quick-opening filter.

The first valve is a butterfly valve, and the second valve has the same structure as the first valve.

The length of the buffer pipeline is 2000mm, and the maximum height is 1100mm.

The beneficial effect of the utility model is that the device is equipped with a guided wave radar liquid level gauge and a magnetic flap liquid level gauge, the magnetic flap liquid level gauge can monitor the liquid level height in real time, and the oil unloading control cabinet passes through the guided wave radar liquid level gauge The liquid level signal controls the speed of the motor, and quickly recovers the crude oil in the crude oil tanker to the storage tank, which improves the efficiency of crude oil unloading; the top of the buffer pipeline is connected to the top of the storage tank through a flame arrester to avoid combustible pollution in the crude oil The gas is discharged into the atmosphere, which is safe and environmentally friendly; the device has a simple structure and is easy to operate, which not only improves the efficiency of crude oil unloading, but is also safe and environmentally friendly, and avoids the safety hazard of spontaneous combustion and explosion of crude oil.

Description of drawings

Fig. 1 is a structural representation of the utility model.

FIG. 2 is a top view of FIG. 1 .

In the accompanying drawings, 1 is the oil pipeline, 2 is the first valve, 3 is the filter, 4 is the second valve, 5 is the buffer pipeline, 6 is the centrifugal pump, 7 is the bypass pipeline, 8 is the first liquid level gauge, 9 is a second liquid level gauge, 10 is a flame arrester, 11 is a baffle plate, 12 is a sewage outlet, 13 is a heat tracing pipe, and 14 is a third valve.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

The specific embodiment, as shown in Figure 1 and Figure 2, the key of the closed oil unloading device is: including the oil pipeline 1, the first valve 2, the filter 3, the second valve 4, the buffer pipeline arranged in sequence from left to right 5. Centrifugal pump 6 and motor. In order to facilitate the installation and disassembly of filter 3, the filter 3 is a quick-opening filter, the first valve 2 is a butterfly valve, and the second valve 4 and the first valve 2 have a structure Similarly, the crude oil tanker is connected to the oil pipeline 1 to start unloading. The crude oil first passes through the filter 3 to filter impurities and then enters the buffer pipeline 5. The shape of the buffer pipeline 5 is L-shaped, and the length of the buffer pipeline 5 is 2000mm. The height is 1100mm, the pipe diameter is 529mm, and the wall thickness is 5mm. The upper end of the buffer pipe 5 is provided with a first liquid level gauge 8, a second liquid level gauge 9 and an oil unloading control cabinet. The first liquid level gauge 8 is Guided wave radar level gauge. The guided wave radar level gauge transmits the liquid level signal to the oil unloading control cabinet. A frequency converter is installed in the oil unloading control cabinet. The speed of the motor can be quickly adjusted through the frequency converter, and the crude oil tanker can be quickly The crude oil is recovered to the large oil storage tank, and there must be no air in the pipeline. The second liquid level gauge 9 is a magnetic flap liquid level gauge, and the magnetic flap liquid level gauge can directly observe the liquid level height of the crude oil in the container, so as to prevent the centrifugal pump 6 from evacuating the crude oil in the oil storage tank, causing the centrifugal pump 6 Idling damages centrifugal pump equipment. When the liquid level rises to a certain height, the oil unloading control cabinet starts to unload oil, the motor works, and the centrifugal pump 6 starts to run. At the same time, the magnetic flap liquid level gauge monitors the liquid level in real time. The liquid level signal controls the speed of the motor until the entire unloading process is completed.

In order to prevent the spread of flammable gas flames in crude oil, the upper end of the buffer pipeline 5 is also provided with a flame arrester 10, which is connected to the top of the oil storage tank through a closed pipeline to prevent volatile gases from being discharged into the atmosphere and maintain oil storage at the same time. The air pressure balance of the tank ensures smooth oil unloading, which is safe, environmentally friendly and energy-saving; the lower end of the buffer pipe is equipped with a baffle 11, a sewage outlet 12 and a heat tracing pipe 13, and the baffle 11 can prevent the liquid from entering the liquid level. The port 12 discharges the impurities when there are too many impurities, and the heat tracing pipe 8 heats the buffer pipe 5 when the ambient temperature is too low. A third valve 14 and a bypass line 7 are also arranged between the filter and the centrifugal pump. When the oil unloading device fails to work normally, the third valve 14 is opened and the bypass line 7 works. The device is equipped with a guided wave radar level gauge and a magnetic flap level gauge. The magnetic flap level gauge can monitor the liquid level height in real time. The oil unloading control cabinet controls the speed of the motor through the liquid level signal of the guided wave radar level gauge. , to quickly recover the crude oil in the crude oil tanker to the large oil storage tank, which improves the efficiency of crude oil unloading; the flame arrester can be used to prevent the spread of flammable gas flames in crude oil, which is safe and environmentally friendly; the device is simple in structure and easy to operate, both It improves the efficiency of crude oil unloading, is safe and environmentally friendly, and avoids the potential safety hazard of spontaneous combustion and explosion of crude oil.

Claims (8)

1. The closed oil unloading device is characterized in that it includes an oil pipeline (1), a first valve (2), a filter (3), a second valve (4), a buffer pipeline (5) arranged in sequence from left to right ), a centrifugal pump (6) and a motor, the buffer pipeline (5) is L-shaped, and the upper end of the buffer pipeline (5) is provided with a first liquid level gauge (8), a second liquid level gauge (9) and In the oil unloading control cabinet, the lower end of the buffer pipe is provided with a baffle (11), a sewage outlet (12) and a heat tracing pipe (13). 2. The closed oil unloading device according to claim 1, characterized in that: a third valve (14) and a bypass line (7) are further arranged between the filter and the centrifugal pump. 3. The closed oil unloading device according to claim 1, characterized in that: the upper end of the buffer pipeline (5) is also provided with a flame arrester (10). 4. The closed oil unloading device according to claim 1, characterized in that: said second liquid level gauge (9) is a magnetic flap liquid level gauge. 5. The closed oil unloading device according to claim 1, characterized in that: said first liquid level gauge (8) is a guided wave radar level gauge. 6. The closed oil unloading device according to claim 1 or 2, characterized in that the filter (3) is a quick-opening filter. 7. The closed oil unloading device according to claim 1, characterized in that: the first valve (2) is a butterfly valve, and the second valve (4) has the same structure as the first valve (2). 8. The closed oil unloading device according to claim 1, characterized in that: the buffer pipe (5) has a length of 2000mm and a maximum height of 1100mm.