JPH019618Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a filtration device with a gas separator placed just before the flow meter, which has a release valve that releases gas according to changes in the liquid level and also circulates the liquid to be measured. In the device, in particular, the mill that crushes the mixture having a predetermined number of particles or more and feeds it again to the filter is designed to minimize the circulation of gas together with the liquid to be measured containing the mixture and to release a large amount of gas. The present invention relates to a filtration device with a gas separator for highly viscous liquids, which is comprised of a device comprising:

Conventionally, when measuring a highly viscous liquid such as COM, which is a mixture of heavy oil or other liquids with coal powder, using a flowmeter, a gas separator was installed just before the flowmeter, as shown in Figure 1. A filter is arranged to remove gases and impurity mixtures mixed into the liquid and supply the liquid. When gas accumulates in the filter during this liquid supply, sensors 22 are placed in the filter to detect the lower and upper limits of the liquid level.
The release valve 24 is opened and closed by a and 22b, and gas is released. As described above, this works effectively when supplying liquid, but the current system does not provide a sufficient effect when releasing a large amount of gas during the initial stage of supplying liquid or when cleaning the inside of piping. In addition, since the mixed liquid accumulated at the bottom of the filter 14 is supplied to the top of the tank 10 again by the pump 27 during liquid supply and is circulated, all particles exceeding a predetermined amount are not supplied to the flow meter. There is a lot of waste. Furthermore, in devices that circulate a liquid to be measured by connecting a mill that pulverizes a mixture with a predetermined number of particles or more and a pump that supplies the mill, a large amount of gas is also circulated in the initial stage, so gas release is completely prevented. There are various problems such as not being able to do it.

The present invention was devised to solve these problems and operate the release valve to reliably release a large amount of gas with a simple structure, and to supply liquid to the flow meter without waste. Embodiments will be described below with reference to FIGS. 2 to 4.

10 is a tank that stands upright via legs 11, and an inlet 12 for supplying liquid is formed in the upper part of this tank 10. A cylindrical body 15 constituting a filter 14 is disposed within this tank 10, and this cylinder 15 has a large number of lattice-shaped spaces extending from the inside to the outside as shown in FIG. have. Incidentally, this cylinder 15 may have a mesh shape using wire. A main shaft 18 that receives rotation from a motor 17 fixed to the top lid 16 of the tank 10 is supported on the lower bottom surface on the center line of the cylinder 15, and this main shaft 18 is rotatable with respect to the cylinder 15. be. A scraper 19 is provided on the inner surface of the cylindrical body 15 and rotates along the inner surface.
9 is configured to be rotated via an arm 20 fixed to the main shaft 18. A partition plate 21 is provided in the middle of the tank 10 to divide the tank 10 into upper and lower parts.
0 has an outlet 13 formed therein.

Furthermore, a first liquid level detection switch 22 similar to the conventional example is fixed to the upper lid 16 of the tank 10.
This first liquid level detection switch 22 is a sensor 2 that detects the lower limit and upper limit of the liquid level during liquid supply.
2a, 22b, and a protective tube 22c which houses the sensors 22a, 22b in the lower and upper parts and extends downward. This provides a signal for opening and closing the discharge valve 24 of the first discharge pipe 23, which is also fixed to the upper lid 16.

Further, a second discharge pipe 31 having a second discharge valve 32 is fixed to this upper lid 16, and this second discharge valve 32 is connected to the side wall of the tank 10 below the first liquid level detection switch 22. It is opened by a second liquid level detection switch 30 attached to the. Further, an outlet 26 is formed in the conical tube 25 at the lower end of the cylindrical body 15, and a pump 27 is connected to the outlet 26 via a cutoff valve 35 and a strainer 37. This strainer 37 is for removing coarse mixture that cannot pass through the pump 27. The pump 27 has a discharge pipe 28 on one side.
Connected to these are switching valves 39 each connected to a mill 38 , the other of which is connected to a mill 38 for comminuting the mixture of liquid to be measured supplied from pump 27 , which mill 38 is connected to a conduit 29 attached at one end to the upper part of tank 10 . is connected to. This pump 27, mill 38 and conduit 2
9 and the liquid to be measured accumulated at the bottom of the tank 10 are re-pulverized and supplied to the upper part of the tank 10 for circulation. Further, the conduit 29 communicates with the discharge pipe 28, and the discharge pipe 28 has a first
Second gate valves 40, 41 are arranged.

In such a configuration, opening the cutoff valve 35,
When the first and second gate valves 40 and 41 are closed and the switching valve 39 is opened so that the pump 27 and the mill 38 communicate with each other, and the supply of the liquid to be measured is started from the inlet 12, this The gas is in tank 1 along with the measured liquid.
At the same time, it enters the cylinder 15 from the top of the cylinder 15, passes from the inside to the outside, and is supplied from the outlet 13 to a flow meter (not shown). At this time, the second
The second discharge valve 32 is activated by the liquid level detection switch 30.
Since the second discharge pipe 31 is open, a large amount of gas is discharged from the second discharge pipe 31. On the other hand, since the motor 17 is driven, the scraper 19 provided around the cylindrical body 15 contacts and rotates along the cylindrical body 15, thereby preventing clogging of the cylindrical body 15 and preventing small air bubbles from forming inside the cylindrical body 15. and mixtures larger than a predetermined size are scraped together to form large bubbles,
It floats upward and accumulates at the top of the tank 10. on the other hand,
The mixture sinks below the filter 14. When a large amount of gas is released in this way and the liquid to be measured reaches a predetermined position, the second release valve 32 is closed.
The supply of the liquid to be measured continues. When this liquid is supplied, the gas mixed in with it accumulates in the upper part of the tank 10, and the liquid level of the liquid to be measured falls, a signal from the sensor 22a at the lower limit position of the first liquid level detection switch 22 set in advance is output. Due to the release valve 2
4 opens and gas is released. Then, when the liquid level rises again and reaches a predetermined position, the sensor 22b at the upper limit position operates and the first discharge valve 24 closes. In this way, the first discharge valve 24 is repeatedly opened and closed by the first liquid level detection switch 22.

Further, the mixture that has sunk to the bottom of the filter 14 is transferred together with the liquid from the outlet 26 to the mill 38 by the continuous or intermittent operation of the pump 27 that is already in operation.
The mixture is ground. The mixture pulverized in this way is passed through the conduit 29 along with the liquid to be measured.
is supplied to the upper part of the tank 10, circulated, and supplied to the filter 14 again. In addition, when discharging the liquid to be measured from the tank 10, open the first and second gate valves 40, 41, and connect the switching valve 39 to the discharge pipe 28.
and the pump 27 are switched so that they communicate with each other, thereby discharging the water.

As is clear from the embodiments described above, in the present invention, the cylindrical body 15 of the filter 14 is attached to the main shaft 18 rotated by the motor 17 attached to the upper part of the tank 10.
A scraper 19 that can be rotated in contact is fixed along the
A pump 27 is connected to the outlet 26 at the bottom of this filter 14.
A mill 38 for crushing granules larger than a predetermined size is connected to the pump 27, and a conduit 29 whose one end is attached to the upper part of the tank 10 is connected to the mill 38. Sensors 22a and 22b for liquid level detection are arranged at predetermined positions at the lower and upper limits of a protective tube 22c that is inserted through and attached to the upper lid 16, respectively, and the upper lid 16 is opened and closed by signals from the sensors 22a and 22b. A second liquid level detection switch 30 is attached to the side wall of the tank 10 below the sensors 22a, 22b, and a second liquid level detection switch 30 is attached to the upper lid 16 below the sensors 22a, 22b. Since it is equipped with a second discharge pipe 31 having a second discharge valve 32 that is opened and closed by a liquid level detection switch 30, even if a large amount of gas enters the filter at the beginning of supply of the liquid to be measured, a large amount of gas will be removed. Complete gas release work. This prevents a large amount of gas from being mixed into the liquid and being supplied to the flowmeter when the liquid to be measured starts being supplied. Furthermore, the pump operates at the same time as the supply of the liquid to be measured starts, and the liquid is circulated, but since the second discharge valve is open when the supply starts, the gas is less likely to be circulated together with the liquid. Efficient pulverization and circulation of the mixture becomes possible. Further, since the second liquid level detection switch, the second discharge pipe, and the second discharge valve are only provided in the tank, the structure is simple and maintenance and inspection are extremely easy. Furthermore, all particles larger than the predetermined size of the filter are pulverized by a mill and circulated to the tank, eliminating the need for a separate large tank for collecting precipitates and allowing the liquid to be measured to be collected without waste. Remarkable effects such as being able to supply water to a flow meter can be obtained.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional filtration device with a gas separator, Fig. 2 is a sectional view of the filtration device with a gas separator of the present invention, Fig. 3 is a route diagram showing the present invention, and Fig. 4 is a cylinder body. FIG. 10 is a tank, 12 is an inlet, 13 is an outlet, 14
is a filter, 15 is a cylinder, 16 is an upper lid, 17 is a motor, 18 is a main shaft, 19 is a scraper, 20 is an arm, 22 is a first liquid level detection switch, 22a, 2
2b is a sensor, 22c is a protection tube, 23 is a first discharge pipe, 24 is a first discharge valve, 26 is an outlet, 27
28 is a pump, 28 is a discharge pipe, 29 is a conduit, 30 is a second liquid level detection switch, 31 is a second discharge pipe, 3
2 is a second discharge valve, 35 is a shutoff valve, 37 is a strainer, 38 is a mill, 39 is a switching valve, 40 is a first gate valve, and 41 is a second gate valve.

Claims (1)

[Claims for Utility Model Registration] An inlet 12 is formed in a tank 10, and this tank 1
A filter 14 for filtering the liquid to be measured supplied from the inlet 12 is disposed inside the tank 10, and an outlet 13 for guiding the liquid to be measured passing through the filter 14 out of the tank 10 is formed at the bottom of the tank 10. , and tank 10
In the filter with a gas separator, a first discharge pipe 23 having a first discharge valve 24 for discharging gas to the outside according to a change in liquid level when liquid is supplied is attached to the top of the tank 10. The cylindrical body 15 of the filter 14 is attached to the main shaft 18 which is rotated by the attached motor 17.
A scraper 19 that can be rotated in contact is fixed along the filter 14, an outlet 26 is formed at the bottom of the filter 14, a pump 27 is connected to the outlet 26, and a mill 3 is connected to the pump 27 for crushing coarse particles.
Further, a conduit 29 having one end attached to the upper part of the tank 10 is connected to the mill 38, and a protective pipe 22c is provided at the upper part of the tank 10 and penetrated downward into the tank 10. A first liquid level detection switch 22 having sensors 22a and 22b for detecting the lower and upper limits of the liquid level is installed in this protection tube 22c.
The first discharge valve 24 is opened and closed by a signal from the sensor 22b, and a second liquid level detection switch 30 is installed on the side wall of the tank below the sensors 22a and 22b. A filtration device with a gas separator for high viscosity liquid characterized in that a second discharge pipe 31 having a second discharge valve 32 opened and closed by the second liquid level detection switch 30 is attached.