JP3586219B2 - Method and apparatus for supplying powder material to high pressure vessel - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for supplying a powder material to a high-pressure container, and more particularly, to a cup-shaped container-shaped first gate valve and a ball valve that deposit and hold the powder material on the upstream side of a pressurized tank. The present invention relates to a novel improvement for completely supplying the powder material and preventing backflow to the weight control feeder side by providing a sixth gate valve made of.
[0002]
[Prior art]
Conventionally, when a powder material is supplied into a high-pressure container that operates at a high pressure, an intermittent and quantitative supply method and apparatus, for example, the apparatus illustrated in FIG. 5 has been employed. That is, in FIG. 5, what is indicated by reference numeral 10 is a powder material supply device, which is mainly composed of a weight control feeder 20, a pressurized tank 30, and a high-pressure gas such as air / argon gas, nitrogen gas or the like. It comprises a source 16. The weight control feeder 20 and the pressurized tank 30 disposed below the weight control feeder 20 are connected by a material discharge pipe 11. The material discharge pipe 11 extends vertically downward from the discharge port of the weight control feeder 20. And penetrates from the top of the pressurized tank 30 to the inside thereof. At the lower end of the material discharge pipe 11, a first gate valve 41 composed of a flap valve is provided so as to be openable and closable so as to cover the opening thereof.
[0003]
The high-pressure gas source 16 is connected to the upper part of the pressurized tank 30 via the first high-pressure gas supply pipe 12 provided with the second gate valve 42. The pressurized tank 30 is connected to a gas discharge pipe 13 provided with a third gate valve 43 at the top, and is opened directly to the atmosphere or to the atmosphere via a vent 17 or a bag filter 18. It is connected to the high-pressure vessel 50 via the fourth gate valve 44 and the material supply pipe 14.
A second high-pressure gas supply pipe 15 having a fifth gate valve 45 is directly connected between the high-pressure gas source 16 and the second gate valve 42 and between the fourth gate valve 44 and the high-pressure container 50. . The above-described gate valves 41, 42, 43, 44, and 45 are configured so that their opening and closing are controlled via a control unit (not shown) so as to be automatically controllable.
[0004]
Next, the operation will be described. First, in a state where all of the first to fifth gate valves 41 to 45 are closed, the weight control feeder 20 is started, and the powder material is continuously and quantitatively discharged to the material discharge pipe 11. By this operation, the powder material is sequentially deposited in the material discharge pipe 11. Next, by opening the first gate valve 41 for a predetermined time and then closing the valve, the powder material deposited in the material discharge pipe 11 falls, is supplied into the pressurized tank 30, and is deposited.
[0005]
Next, in the above-described state, only the second gate valve 42 and the fourth gate valve 44 are opened for a predetermined time and then closed, so that the first high-pressure gas supply 16 A gas having a pressure higher than the pressure in the high-pressure container 50 is supplied to the pressurized tank 30 via the pipe 12, and the powder material deposited in the pressurized tank 30 is subjected to the fourth gate valve by the pressure of the gas. The air is pneumatically transported into the high-pressure vessel 50 through 44 and supplied.
Next, by opening and closing the fifth gate valve 45 for a predetermined time, gas is supplied from the high-pressure gas source 16 to the material supply pipe 14 via the second high-pressure gas supply pipe 15, and the material supply pipe 14 is closed. The powder material remaining therein is pneumatically transported into the high-pressure container 50 by the pressure of this gas and supplied.
[0006]
Next, by opening and closing the third gate valve 43 for a predetermined time, the high-pressure gas remaining in the pressurized tank 30 is discharged directly from the gas exhaust pipe 13 to the atmosphere or through the vent 17 or the bag filter 18. Thus, the internal pressure of the pressurized tank 30 becomes equal to the atmospheric pressure. As described above, by continuously operating the weight control feeder 20 in the fixed supply state and repeating the above-described operations at short time intervals, the powder material is pseudo-continuously supplied to the high-pressure container 50. You. The operations of the gate valves 41 to 45 and the weight control feeder 20 are as shown in the operation chart of FIG.
[0007]
[Problems to be solved by the invention]
The conventional method and apparatus for supplying a powder material to a high-pressure container are configured as described above, and therefore have the following problems. That is, when the powder material is a metal powder such as magnesium, aluminum, or calcium metal or a material having a large specific gravity, or when the metal powder or a material having a large specific gravity is blended, the first partition of the flap valve type is used. In some cases, when the valve is closed, the powder material interposed between the valve bodies does not allow the valve to be completely closed, so that the seal shutoff function cannot be exhibited. As a result, the high-pressure gas may flow backward from the first gate valve to the weight control feeder via the material discharge pipe, and may hinder the quantitative supply control of the powder material.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and in particular, a first container-shaped rotary type cup-shaped container for depositing and holding a powder material on the upstream side of a pressurized tank. By providing a sixth gate valve comprising a gate valve and a ball valve, a method and an apparatus for supplying a powder material to a high-pressure container capable of completely supplying the powder material and preventing backflow to the weight control feeder side are provided. The purpose is to provide.
[0009]
[Means for Solving the Problems]
The method for supplying a powder material to a high-pressure container according to the present invention comprises the steps of: supplying a constant amount of a powder material made of metal powder from a weight control feeder to a pressurized tank; In a method of supplying a powder material to a high-pressure container adapted to supply a body material, one of the upper supply port and the lower discharge port of the sealed container is provided between the weight control feeder and the pressurized tank. The first gate valve and the ball valve having a cup-shaped valve element rotatably supported in a non-contact state with respect to the supply port, the sealed container, and the discharge port while being able to selectively direct only the opening. A sixth gate valve is provided, and when the sixth gate valve is closed, the powder material supplied from the weight control feeder is sequentially deposited and held in the valve body of the first gate valve. Only the 6th gate valve Not deposited on the upstream portion, the valve element was the powder material that has been held in the valve body and invert it completely is the sixth gate valve rotation after the sixth gate valve is fully opened It is a method of supplying to the pressurized tank only while the valve is open , and a material discharge pipe connected to a weight control feeder for discharging powder material made of metal powder, and a lower part of the material discharge pipe. Only one opening can be selectively directed to the upper supply port and the lower discharge port of the hermetically sealed container, and can be freely rotated in a non-contact state with respect to the supply port, the sealed container and the discharge port. A first gate valve having a cup-shaped valve element supported by a shaft, a pressurized tank connected to a lower portion of the first gate valve via a sixth gate valve formed of a ball valve, and a downstream of the pressurized tank. A high pressure vessel connected to the pressure tank and a second gate valve at the top of the pressurized tank. The first high pressure gas through the supply tube consists of a connected high-pressure gas source, wherein the sixth state where the partition valve is open the first partition of the powder material fed from said weight control feeder with The valve body is sequentially deposited and held only in the valve body, and does not accumulate on the upstream portion of the sixth gate valve. After the sixth gate valve is completely opened, the valve body is rotated and the valve body is rotated. The configuration is such that the held powder material is supplied to the pressurized tank only while the sixth gate valve is completely opened, and the powder material is held between the high-pressure gas source and the second gate valve. A second high-pressure gas supply pipe having a fifth gate valve for directly connecting between the pressure tank and the high-pressure vessel, a gas exhaust pipe connected to the upper part of the pressurized tank and having a third gate valve, It is a structure which has.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a method and an apparatus for supplying a powder material to a high-pressure container according to the present invention will be described with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals.
[0011]
In FIG. 1, what is indicated by reference numeral 10 is a powder material supply device. The supply device 10 mainly includes a weight control feeder 20, a pressurized tank 30, and a high-pressure gas source 16 such as air, argon gas, or nitrogen gas. It is configured. The weight control feeder 20 and the pressurized tank 30 disposed below the weight control feeder 20 are connected to the first gate valve 60 including the material discharge pipe 11 and the cup-shaped valve body 66 connected in series with each other. It is connected to the gate valve 60 by a sixth gate valve 46 having a different structure and a ball valve having excellent sealing properties.
[0012]
The high-pressure gas source 16 is connected to the top of the pressurized tank 30 via the first high-pressure gas supply pipe 12 provided with the second gate valve 42. The pressurized tank 30 is connected to a gas discharge pipe 13 provided with a third gate valve 43 at the top, and is opened directly to the atmosphere or to the atmosphere via a vent 17 or a bag filter 18. The bottom is connected to the high-pressure vessel 50 via the material supply pipe 14.
Further, a second high-pressure gas supply pipe 15 provided with a fifth gate valve 45 is bypassed between the high-pressure gas source 16 and the second gate valve 42 and between the pressurized tank 30 and the high-pressure container 50. Directly connected as a system. The above-described gate valves 60, 42, 43, 45, and 46 are configured such that their on-off valves can be automatically controlled by control of a control unit (not shown).
[0013]
Next, as shown in FIGS. 2 and 3, the first gate valve 60 composed of a cup-shaped valve body 66 has a sealed container 61 having a tapered lower portion and an inner portion of the sealed container 61. The valve pair 66 is rotatably housed in the valve. The sealed container 61 has a supply port 62 formed at an upper portion and a discharge port 63 formed at a lower portion. The material discharge pipe 11 is connected to the supply port 62, and the sixth gate valve 46 is connected to the discharge port 63. The valve element 66 is formed in a substantially inverted triangular shape and has an opening 67 at its upper part, and is rotated in the direction of arrow A by a horizontal shaft 68 rotatably provided on the side wall of the sealed container 61. The horizontal shaft 68 is freely rotatable by being driven by a driving device (not shown). That is, only one opening 67 of the powder 66 is rotated around the horizontal axis 68 by the driving device, so that the opening 67 faces the supply port 62 and the discharge port 63 faces the discharge port 63. It is configured to be able to freely rotate so as to be selectively directed to a position to be moved. The valve body 66 is rotatably supported in a non-contact state with respect to the supply port 62, the sealed container 61, and the discharge port 63.
[0014]
Next, the operation will be described. First, in a state where the opening 67 of the valve body 66 of the first gate valve 60 is rotated and stopped so as to face the supply port 62, and all the components from the second gate valve 42 to the sixth gate valve 46 are closed. Then, the weight control feeder 20 is started, and the powder material is quantitatively and continuously discharged to the material discharge pipe 11 side. By this operation, the powder material is sequentially deposited and held in the valve body 66 of the first gate valve 60.
[0015]
Next, when the valve element 66 of the first gate valve 60 is rotated and turned over after the sixth gate valve 46 is opened, the powder material in the valve element 66 is deposited on the bottom of the pressurized tank 30.
[0016]
That is, the powder material continuously discharged from the weight control feeder 20 is only deposited and held in the valve body 66 of the first gate valve 60 when the sixth gate valve 46 is closed. It does not accumulate on the upstream part of the sixth gate valve 46 and, as shown in the time chart of FIG. 4, only after the sixth gate valve 46 is completely opened, that is, only while the sixth gate valve 46 is completely opened. The powder material is supplied through a sixth gate valve 46.
[0017]
Next, by opening only the second gate valve 42 for a predetermined time and then closing the valve, the pressure in the high-pressure vessel 50 is transferred from the high-pressure gas source 16 to the pressurized tank 30 via the first high-pressure gas supply pipe 12. The high-pressure gas is also supplied, and the powder material deposited on the bottom of the pressurized tank 30 is extruded into the high-pressure container 50 by the pressure of the gas, pneumatically transported, and supplied. Next, by opening only the fifth gate valve 45 for a predetermined time and then closing the valve, the pressure in the high-pressure vessel 50 is increased from the high-pressure gas source 16 to the material supply pipe 14 via the second high-pressure gas supply pipe 15. Also, a high-pressure gas is supplied, and the powder material remaining in the material supply pipe 14 is pneumatically transported into the high-pressure container 50 by the gas pressure and supplied.
[0018]
Next, by opening only the third gate valve 43 for a predetermined time and then closing the valve, the high-pressure gas remaining in the pressurized tank 30 is directly discharged from the gas exhaust pipe 13 to the atmosphere or through the vent 17 or the bag filter 18. The pressure is released and the internal pressure of the pressurized tank 30 becomes equal to the atmospheric pressure. As a result, when the sixth gate valve 46 is opened, reverse ejection from the pressurized tank 30 toward the material discharge pipe 11 is prevented. As described above, the powder material is continuously supplied to the high-pressure container 50 by continuously operating the weight control feeder 20 in the fixed supply state and repeating the above-described operation.
[0019]
Although the sixth gate valve 46 has a configuration having a ball valve having high-pressure sealing properties, other types of valves can be used as long as they can seal at high pressure.
[0020]
【The invention's effect】
Since the method and apparatus for supplying a powder material to a high-pressure container according to the present invention are configured as described above, the following effects can be obtained.
(1) A first gate valve and a sixth gate valve are provided between the weight control feeder and the pressurized tank, and the powder material supplied from the weight control feeder is temporarily deposited and held on the first gate valve. The powder material deposited on the first gate valve is supplied to the pressurized tank by rotating the first gate valve and inverting the powder material while the sixth gate valve is completely opened. The gate valve can be completely closed, and backflow of the high-pressure gas in the direction of the weight control feeder does not occur.
(2) As a result, even when the powder material is a material having a large specific gravity, such as a metal powder, or a material in which a material having a large specific gravity is blended, the quantitativeness of the supplied amount can be secured.
(3) By forming the sixth gate valve with a ball valve, the sealing performance against high-pressure gas is improved.
(4) By forming the first gate valve with a cup-shaped valve element, it is possible to reliably deposit and hold the powder material with a simple structure.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an apparatus for supplying a powder material to a high-pressure container according to the present invention.
FIG. 2 is a front view of a first gate valve of the supply device of FIG. 1;
FIG. 3 is a side sectional view of FIG. 2;
FIG. 4 is an operation chart of the supply device according to the present invention.
FIG. 5 is a configuration diagram showing a conventional apparatus for supplying a powder material to a high-pressure container.
FIG. 6 is an operation chart of a conventional supply device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Supply apparatus 11 Material discharge pipe 12 First high pressure gas supply pipe 13 Gas exhaust pipe 14 Material supply pipe 15 Second high pressure gas supply pipe 16 High pressure gas source 20 Weight control feeder 30 Pressurized tank 42 Second gate valve 43 Third gate Valve 45 Fifth gate valve 46 Sixth gate valve (ball valve)
50 High-pressure vessel 60 First gate valve (cup type)
61 sealed container 62 supply port 63 discharge port 66 valve body 67 opening

Claims (3)

From the weight control feeder (20), a fixed amount of the powder material made of metal powder is supplied to the pressurized tank (30), and the powder material is pneumatically transported from the pressurized tank (30) to the downstream high-pressure container (50). In the method of supplying the powder material to the high-pressure container so as to supply, between the weight control feeder (20) and the pressurized tank (30), a supply port (62) on the upper part of the sealed container (61), Only one opening (67) can be selectively directed to the lower discharge port (63), and is not in contact with the supply port (62), the sealed container (61) and the discharge port (63). A first gate valve (60) having a cup-shaped valve body (66) rotatably supported in a state and a sixth gate valve (46) composed of a ball valve are provided, and the sixth gate valve (46) is provided. the only in a state that closes and holds sequentially depositing the powder material fed from said weight control feeder (20) to said valve body (66) of said first gate valve (60) first Not deposited on the upstream portion of the sluice valve (60), held on the sixth gate valve (46) said valve body (66) to rotate and invert the valve body (66) in the after completely open Supplying the powdered material to the high-pressure container only while the sixth gate valve (46) is completely opened. Method. A material discharge pipe (11) connected to the weight control feeder (20) for discharging powder material made of metal powder, and a supply at an upper part of a sealed container (61) provided at a lower part of the material discharge pipe (11). Only one opening (67) can be selectively directed to the mouth (62) and the lower outlet (63), and the supply port (62), the sealed container (61) and the outlet (63) A first gate valve (60) having a cup-shaped valve element (66) rotatably supported in a non-contact state with respect to the first valve (60), and a sixth valve comprising a ball valve below the first gate valve (60). A pressurized tank (30) connected via a gate valve (46), a high-pressure vessel (50) connected downstream of the pressurized tank (30), and a third pressurized tank above the pressurized tank (30). A high-pressure gas source (16) connected via a first high-pressure gas supply pipe (12) having two gate valves (42), and when the sixth gate valve (46) is closed, the supplied from the weight control feeder (20) Wherein the body material first gate valve (60) of not deposited on the upstream portion of the valve body only in the sixth gate valve are sequentially deposited held in the (66) (60), the sixth gate valve (46) said valve disc (66) rotating the valve member (66) said sixth gate valve the powder material that has been held in the (46) is fully opened after completely opened A supply device for supplying the powder material to the high-pressure container, wherein the supply device supplies the powder material to the pressurized tank (30) only during the operation. It has a fifth gate valve (45) for directly connecting between the high pressure gas source (16) and the second gate valve (42) and between the pressurized tank (30) and the high pressure container (50). 3. A gas supply pipe according to claim 2, further comprising a second high-pressure gas supply pipe, and a gas exhaust pipe connected to an upper part of said pressurized tank and having a third gate valve. For supplying powder material to a high pressure vessel.

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