JPS6023503Y2 - Marine fuel blending equipment - Google Patents

Description

[Detailed explanation of the invention] This invention was developed to replace high viscosity fuel oil (hereinafter referred to as C heavy oil) with low viscosity fuel oil previously stored in the ship at a stage in the middle of filling a storage tank inside the ship. oil (hereinafter referred to as A heavy oil).

) in an appropriate ratio to reduce the viscosity of the C heavy oil to a viscosity that can be inhaled by a fuel transfer pump.

Conventionally, heavy oil A and heavy oil C have been used as fuel for ships.

Since the former has a low viscosity, it can be inhaled by a fuel transfer pump and is easy to use, but it is expensive because it is a high-quality product.

Although the latter is inexpensive, its viscosity increases as the temperature drops and requires heating when used.

In A-heavy oil-only vessels, the fuel oil storage tank is not equipped with a heating device, and it is not practical to store high-viscosity fuel such as B-heavy oil or C-heavy oil.

The reason for this is that the viscosity increases at room temperature and exceeds the suction capacity of the fuel transfer pump (especially in winter), making suction impossible.

However, as the price of A-heavy oil increases, in order to save fuel by using the inexpensive C-heavy oil, it is necessary to lighten the C-heavy oil to a viscosity that can be sucked in by a fuel transfer pump.

In order to reduce the weight of the oil, the inventor of the present invention first pumped heavy oil A into a heavy oil storage tank inside a ship, and while pumping heavy oil C into the storage tank, transferred the heavy oil A with a heavy oil transfer pump. They discovered that the A heavy oil and C heavy oil can be mixed in an accurate blending ratio, leading to the completion of the present invention.

Therefore, the purpose of this invention is to create fuel oil with the required viscosity by blending C heavy oil and A heavy oil at an accurate mixing ratio using a simple system onboard the ship during the storage of C heavy oil in the ship's fuel tanks. The purpose is to provide equipment for

Hereinafter, the present invention will be specifically explained in detail using the accompanying drawings.

In Fig. 1, the designation number 15 is an existing pipe line for filling fuel oil storage tanks inside a ship, and normally fuel oil is stored directly through pipe 15. It's stuck inside the tank.

In the present invention, the pipe line 1 is branched in the middle of the pipe line 15,
C heavy oil is introduced into this pipe line 1.

That is, first, close the valve 18 and transfer heavy oil C to the oil tank A outside the vessel.
from the upper deck X to the conduit 1.

a is a pump, and 3' is a flow meter.

The pipe line 1 is provided with a filter 2, and the pipe line P is further provided with a flow meter 3.

Further, 4 is a heavy oil transfer pipe line A, which is connected to a heavy oil A storage tank B inside the ship.

Heavy oil A is stored in tank B in advance, and heavy oil A is pumped from tank B through valves 30 and 3 by the operation of pump a'.
1 to lead to conduit 4.

A flow meter 6 is also attached to the pipe line 4 via filters 5' and 5.

These flowmeters 3, 6 are each connected to a ratio setting device 9 by a line 7.8, and the flow rate value detected by the flowmeter is always introduced into the comparison setting device 9.
, 4 are each connected to an in-line mixer 12 via a check valve 10.11, where the A heavy oil and the C heavy oil are mixed.

Furthermore, a flow regulating valve 13 is provided in the line 4 and is connected to the ratio setting device 9 via an operating line or device 14 .

The resulting blended oil is stored in a blended oil storage tank.

Conduit 1. 4. On the upstream side of 15 are valves 16 and 1, respectively.
7.18 is provided, and a valve 19 is also provided on the downstream side of the mixer 12.
There is.

In addition, the pipe line 4 branches off from a pipe line 20 that communicates directly with the oil service tank.

21, 22, and 23 are pressure gauges connected to the upstream sides of the pipes 1 and 4 and the mixer 12, respectively.

24 is an air source (air filter source), which is a driving source when a pneumatic system is used as the operating device 14.

25 is a safety device. During operation, the flow rate value detected by the flow meter 3 in the line P is always introduced into the ratio setting device 9 via the line 7, and the flow rate value detected by the flow meter 6 in the line 4 is introduced into the ratio setting device 9 via the line 8. The flow rate ratio, that is, the mixing ratio of heavy oil A and heavy oil C is checked, and if the ratio is different from a predetermined value, the operating device 14 is activated by the signal output from the ratio setting device 9, and the flow rate regulating valve is thereby activated. Operate or adjust 13.

The value of the flow rate at that time is always fed back to the ratio setting device 9, and when the ratio of the flow rates of heavy oil A and heavy oil C deviates from the predetermined value, the flow rate adjustment valve 14 is immediately automatically adjusted, and the flow rate ratio is set in advance. Acts to match a predetermined value.

Therefore, heavy oil A and heavy oil C are mixed accurately, and it is possible to easily lighten the heavy oil C.

Preferably, the detected value of each flowmeter is introduced into the ratio setting device 9 as an electrical signal, and a pneumatic system is used as the device for operating the regulating valve 13.

The most distinctive feature of the present invention is that the first flow meter 3 is provided in the pipe P leading from the in-line mixer 12 to the blended oil storage tank.

The flow rate of heavy oil C in the pipe line 1 changes significantly depending on the loading speed and mixing ratio, and the viscosity also changes depending on the temperature. This effect appears on the flowmeter, reducing the accuracy of the flowmeter.

For this reason, if the first flow meter 3 is provided inside the pipe line 1, it becomes difficult to manage the flow rate.

However, in the present invention, since the first flow meter 3 is provided in the pipe P after the in-line mixer 12 as described above, the viscosity of the blended oil in the pipe P is constant S, so the change in flow rate is small, and therefore, Flow rate management with the ratio setter 9 becomes very easy.

In addition, in the above-mentioned blending device of the present invention, as shown in FIG. It's okay.

In this case, in the viscosity transmitter 3A, the inline mixer 12
The viscosity of the blended oil obtained by mixing is detected, and this viscosity value is sent to the controller 9A via line 7, where the mixing ratio of A heavy oil and C heavy oil is checked based on the viscosity value.

If this value differs from a predetermined value, the operating device 14 is activated by a signal issued from the controller 9A, thereby operating or adjusting the flow rate regulating valve 13.

The viscosity value at this time is always fed back from the viscosity transmitter 3A to the controller 9A, and when the ratio of the flow rates of heavy oil A and heavy oil C deviates from a predetermined value, the flow rate regulating valve 14 is immediately adjusted automatically, and the viscosity value acts so that it matches a predetermined value set in advance.

For this reason, A heavy oil and C heavy oil are mixed accurately, making it possible to easily lighten C heavy oil.

In this case, the filter 5 in FIG. 1, the second flowmeter 6,
and line 8 are unnecessary.

For example, a marine viscometer FV-1000 manufactured by Tokyo Keiki Co., Ltd. is used as the viscosity transmitter 9A, and the controller 9
Any known material can be used as A.

As described above, according to the present invention, high viscosity heavy oil C is accurately mixed with heavy oil A and lightened to a viscosity that can be sucked by the fuel transfer pump, so that it is heated in the boiler or fuel oil storage tank. Even ships that are not equipped with this device can use inexpensive C heavy oil.

In addition, the system configuration is simple, and A heavy oil and C
Since the flow rate of heavy oil is always fed back to the ratio setting device, the flow rate ratio is always maintained at a predetermined value, so that the oil can always be mixed at an appropriate mixing ratio.

[Brief explanation of drawings]

FIG. 1 is a diagram schematically showing an embodiment of the marine fuel blending device of this invention. FIG. 2 is a diagram schematically showing another specific example of this invention. In the figure, 1...C heavy oil pipe line, 3...First flow meter, 4...A heavy oil transfer pipe line, 6...
... Second flow meter, 9 ... Ratio setter, 12
... In-line mixer, 13 ... Flow rate adjustment valve, 14 ... Flow rate adjustment valve operation device,
P... Pipeline, A... Oil ship, B...
...A heavy oil storage tank, a, a'...pump,
3A...Viscosity transmitter, 9A...Controller.

Claims (1)

[Scope of utility model registration request] A fuel blending device for a ship that introduces a high viscosity fuel oil and a low viscosity fuel oil into an in-line mixer inside a ship through respective pipe lines and mixes the resulting blended oil in a blended oil storage tank, comprising: In a marine fuel blending device, blended oil is introduced into a blended oil tank through a pipe P leading from the in-line mixer to the blended oil storage tank. a second flow meter and a flow rate regulating valve provided in the viscosity fuel oil pipeline, a ratio setter connected to the first and second flow meters and receiving their flow rate detection values; a device that receives a signal from the ratio setter and operates the flow rate adjustment valve to adjust the ratio to a predetermined value when the ratio of the detected flow rate value accepted by the ratio setter differs from a predetermined value; A marine fuel blending device for reducing the viscosity of high viscosity fuel oil to a viscosity that can be inhaled by a fuel transfer pump.