JP2002068125A - Method and apparatus for feeding powdery materials to high-pressure container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure quantification of a feeding amount of powdery materials, prevent the powdery materials from piling up and simplify a system of a feeding apparatus by providing a flap valve at an opening portion of a material discharging pipe located in a pressurized tank. SOLUTION: The method and apparatus for feeding the powdery materials to the high-pressure container of the invention is the method for feeding the powdery materials for feeding the powdery materials, quantified and fed from a weight control feeder (20) to a pressurized tank (30), from the pressurized tank (30) to the high-pressure container (50) by pneumatic transportation, and intermittently receives the powdery materials fed from the weight control feeder (20), within the pressurized tank (30) by opening and closing the flap valve (46) provided in the pressurized tank (30).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for supplying a powder material to a high pressure vessel, and more particularly to a novel method for quantitatively supplying a powder material to a high pressure vessel in a state close to continuous supply. Regarding improvements.

[0002]

2. Description of the Related Art Conventionally, when a powder material is supplied into a high-pressure container operating at a high pressure, a method and an apparatus shown in FIG. I was That is, in FIG. 7, what is indicated by reference numeral 10 is a powder material supply device, and this supply device 10 includes a weight control feeder 20, a pressurized tank 30, and a high-pressure gas source 16 such as air / nitrogen gas. Have been. 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 provided with a discharge valve 40 and a first gate valve 41. The material discharge pipe 11 is disposed vertically downward from a discharge port of the weight control feeder 20, and is connected to a top of the pressurized tank 30.

[0003] The pressurized gas source 16 is connected to the top of the pressurized tank 30 via the high-pressure gas supply pipe 12 provided with a second gate valve 42. A gas exhaust pipe 13 provided with a third gate valve 43 is connected to the top of the pressurized tank 30, and is opened directly to the atmosphere or to the atmosphere via a vent 17 and a bag filter 18. The bottom is connected to a high-pressure vessel 50 via a material supply pipe 14 provided with a fourth gate valve 44. The opening and closing of each of the discharge valve 40 to the fourth gate valve 44 can be automatically controlled by a control device (not shown).

In the apparatus for supplying a powder material to a high-pressure container configured as described above, to supply the powder material to the high-pressure container, first, the weight control feeder 20 is activated (first step). Then, the discharge of the powder material to the material discharge pipe 11 is started. When the discharge valve 40, the first gate valve 41, and the third gate valve 43 are opened in a state where all the valves from the discharge valve 40 to the fourth gate valve 44 are closed (second step), the pressurized tank 30 Is released to the atmosphere through the gas exhaust pipe 13, and the powder material falls down in the material exhaust pipe 11 and is supplied to the pressurized tank 30, and is upstream of the fourth gate valve 44 from the bottom of the pressurized tank 30. Is deposited in the side material supply pipe 14.

Next, the first gate valve 41 and the third gate valve 4
3 is closed, and the second gate valve 42 and the fourth gate valve 44 are opened (third step), the high pressure gas is supplied from the high-pressure gas source 16 to the pressurized tank 30 via the high-pressure gas supply pipe 12. 5
Higher pressure gas than the pressure within 0 is supplied. As a result, the powder material deposited in the material supply pipe 14 from the bottom of the pressurized tank 30 is pushed out through the fourth gate valve 44 into the high-pressure container 50 by the gas pressure, and is pneumatically transported. Supplied.

Next, the discharge valve 40, the second gate valve 42 and the fourth gate valve 44 are closed, and the first gate valve 41 and the third gate valve are closed.
When the gate valve 43 is opened (fourth step), the high-pressure gas remaining in the pressurized tank 30 is released from the gas exhaust pipe 13 to the atmosphere, and the powder deposited on the upstream side of the first gate valve 41 The material is dropped and supplied into the pressurized tank 30, and the pressurized tank 3
Material supply pipe 14 upstream of the fourth gate valve 44 from the bottom of
Deposited within. Since the discharge valve 40 upstream of the first gate valve 41 is closed, the high-pressure gas does not flow backward from the pressurized tank 30 to the material discharge pipe 11 via the first gate valve 41.

The first gate valve 41 and the third gate valve 4
3 is closed, the discharge valve 40, the second gate valve 42 and the fourth
When the gate valve 44 is opened (sixth step), the pressurized tank 30 from the high-pressure gas source 16 via the high-pressure gas supply pipe 12
To the material discharge pipe 11 on the upstream side of the first gate valve 41 while supplying a gas having a pressure higher than the pressure in the high pressure vessel 50 to the
A powder material is deposited therein. As described above, the weight control feeder 20 is continuously operated in the fixed supply state, and as shown in the fourth step and the fifth step, the opening / closing operation of the first gate valve 41 and the third gate valve 43, and the dispensing valve 4
The powder material is continuously supplied to the high-pressure container 50 by alternately performing the opening and closing operations of the 0, the second gate valve 42 and the fourth gate valve 44 at short time intervals.

[0008]

Since the conventional method and apparatus for supplying a powder material to a high-pressure container have been constructed as described above, the following problems exist. (1) A part of the powder material may remain in two valves provided immediately before the pressurized tank, that is, the discharge valve and the first gate valve, and the powder material discharged from the weight control feeder with high accuracy may be removed. At the time of supply to the high-pressure vessel, the quantitativeness of the supply ratio may be lost. (2) The high pressure vessel cannot be placed directly under the pressurized tank,
There is a case where it is arranged at a position shifted laterally from immediately below or side by side with the pressurized tank. In such a case,
The pneumatically transported powder material sometimes stayed in the material supply pipe between the fourth gate valve and the high pressure vessel. In particular, in the case of a powder material having a large specific gravity, the tendency has been increased. (3) The material discharge pipe for supplying the powder material from the weight control feeder to the pressurized tank is provided with two valves, and the configuration of the system is complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, the present invention has been made to secure the quantitativeness of the supply amount of powder material, to prevent the stagnation of powder material, and to provide a system of a supply device. It is an object of the present invention to provide a method and an apparatus for supplying a powder material to a high-pressure container, which simplify the process.

[0010]

According to the present invention, there is provided a method of supplying a powder material to a high-pressure container according to the present invention, wherein the powder material which is quantitatively supplied from a weight control feeder to a pressure tank is transferred from the pressure tank to the high-pressure container. In the method for supplying a powder material to a high-pressure container which is supplied by pneumatic transportation, the powder material supplied from the weight control feeder is intermittently opened and closed by opening and closing a flap valve provided in the pressurized tank. It is a method of receiving into the pressurized tank, and the supply device of the powder material to the high-pressure container according to the present invention is configured by a weight control feeder and a pressurized tank disposed below the feeder,
A discharge port of the weight control feeder and a top of the pressurized tank are connected by a material discharge pipe, and a high-pressure gas source is connected to the pressurized tank via a high-pressure gas supply pipe provided with a second gate valve. And a gas exhaust pipe provided with a third gate valve is connected and opened to the atmosphere, and the bottom of the pressurized tank and the high-pressure vessel are supplied by a material supply pipe provided with a fourth gate valve to the high-pressure vessel. In the powder material supply device, the tip of the material discharge pipe is projected into the inside of the pressurized tank, and a flap valve is provided at the tip of the material discharge pipe,
Further, a pin connection between the valve body and the support of the flap valve is configured to be connected with a gap provided therebetween, and the material supply pipe downstream from the fourth gate valve is connected to a fifth gate valve. Is connected to the high-pressure gas source via a second high-pressure gas supply pipe provided with a.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 below in detail with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals. In FIG. 1, what is indicated by reference numeral 10 is a powder material supply device, which is constituted by a weight control feeder 20, a pressurized tank 30, and a high-pressure gas source 16 such as air / nitrogen gas. I have. 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 is disposed vertically downward from the discharge port of the weight control feeder 20, protrudes from the top of the pressurized tank 30 to the inside thereof, and has a protruding end that covers the opening of the protruding end. A flap valve 46 as a gate valve is provided.

The high-pressure gas source 16 is connected to the top of the pressurized tank 30 via the high-pressure gas supply pipe 12 provided with the second gate valve 42. A gas exhaust pipe 13 provided with a third gate valve 43 is connected to the top of the pressurized tank 30, and the gas exhaust pipe 13 is directly connected to the atmosphere or via a vent 17 and a bag filter 18. The bottom of the pressurized tank 30 is connected to a high-pressure vessel 50 via a material supply pipe 14 provided with a fourth gate valve 44. The high-pressure gas supply pipe 12 upstream of the second gate valve 42, that is, the high-pressure gas source 16 is connected to the material supply pipe 14 via a second high-pressure gas supply pipe 15 provided with a fifth gate valve 45. At a position downstream of the fourth gate valve 44. In addition, each of the valves from the second gate valve 42 to the flap valve 46 is configured to be capable of automatically controlling the opening and closing thereof via a control device (not shown).

The pressurized tank 30 will be described in more detail.
It is configured as shown in FIG. 2 and FIG. That is, the pressurized tank 30 includes a pressurized tank body 31 and
It has an air cylinder 32 supported and provided outside the pressurized tank main body 31, and the operating tip of this air cylinder 32 is connected to the tip of a link 33 fixedly connected to the opening / closing shaft 46 c of the flap valve 46. Have been. At the upper part 31a of the pressurized tank main body 31, the material discharge pipe 11 hangs downward and projects from the upper part to the inside.
The flap valve 46 is provided to open and close 1aA. Therefore, the opening 11aA can be opened and closed by the flap valve 46 by operating the air cylinder 32 to cause the link 33 to be indicated by the solid line and the dotted line.

As shown in FIGS. 4 and 5, the flap valve 46 includes a valve body 46a, a support 46b, and the opening / closing shaft 46c. The valve body 46a and the support 46b are connected to each other by the pin 100.
Is configured to be swingable with respect to the support 46b,
The key 6b and the opening / closing shaft 46c are connected by a key 101. Further, the pin 100 connection between the valve body 46a and the support 46b is provided with a gap (play). That is, when the air cylinder 32 reciprocates, the opening / closing shaft 46c reciprocates via the link 33, the support 46b swings, and the valve body 46a moves the opening 11aA of the projecting end 11a of the material discharge pipe 11. Open and close. Since a gap (play) is provided in the pin 100 connection between the valve body 46a and the support 46b, the valve body 46
There is a margin in the movement of a, and it is easy to join along the opening 11aA of the protruding end 11a, so that it is possible to securely close (seal). In addition, the air cylinder 3
Numeral 2 is configured so that the reciprocating operation can be automatically controlled by a control device (not shown), and the opening and closing of the flap valve 46 is automatically controlled.

In the apparatus for supplying a powder material to a high-pressure vessel configured as described above, the supply apparatus 10 is operated as shown in FIG. 6 to supply the powder material to the high-pressure vessel. That is, in a state where the flap valves 46 are all closed from the second gate valve 42, first, the weight control feeder 20 is activated (first step), and the discharge of the powder material to the material discharge pipe 11 is started. The flap valve 46 is opened and closed for a predetermined time (second step). By this operation, the powder material falls down in the material discharge pipe 11 and is supplied to the pressurized tank 30, and the fourth gate valve 44 from the bottom of the pressurized tank body 31.
Is deposited in the material supply pipe 14 on the upstream side of.

Next, the second gate valve 42 and the fourth gate valve 4
4 is opened and closed for a predetermined time (third step). By this operation, a gas having a pressure higher than the pressure of the high-pressure container 50 is supplied from the high-pressure gas source 16 to the pressurized tank 30 via the high-pressure gas supply pipe 12, and the gas is supplied from the bottom of the pressurized tank 30 into the material supply pipe 14. Is pushed through the fourth gate valve 44 into the high-pressure container 50 by the pressure of the gas, and is pneumatically transported and supplied.

The fifth gate valve 45 is opened and closed for a predetermined time (fourth step). With this operation, the material supply pipe 1 is supplied from the high-pressure gas source 16 through the second high-pressure gas supply pipe 15.
4, a gas having a pressure higher than the pressure in the high-pressure vessel 50 is supplied, and the powder material remaining without being transported into the material supply pipe 14 is extruded into the high-pressure vessel 50 by the pressure of the gas. And supplied.

Next, the third gate valve 43 is opened for a predetermined time,
The valve is closed (fifth step). By this operation, the high-pressure gas remaining in the pressurized tank 30 is discharged from the gas exhaust pipe 13 through the vent 17 or the bag filter 18 or directly to the atmosphere, and the internal pressure of the pressurized tank 30 becomes equal to the atmospheric pressure. . As a result, opening of the flap valve 46 is facilitated, and when the flap valve 46 is opened, back ejection from the pressurized tank 30 to the material discharge pipe 11 does not occur.

As described above, the weight control feeder 20 is continuously operated in the constant supply state, and the second step to the fifth step are performed.
By repeating the operations shown in the steps at short time intervals, the powder material is continuously supplied to the high-pressure container 50. When the repetition is performed at short time intervals, the pneumatic transport in the third step becomes insufficient, but is compensated by the fourth step, and the quantitative transport property of the powder material can be secured.

[0020]

The method and apparatus for supplying a powder material to a high-pressure container according to the present invention are configured as described above, so that the following effects can be obtained. (1) A flap valve is provided so that the lower part of the material discharge pipe projects into the inside of the pressurized tank 30 and covers the opening of the protruding end. The powder material is intermittently received in the pressurized tank by opening and closing the flap valve. By doing so, the powder material accurately discharged from the weight control feeder can be supplied to the high-pressure container without losing quantitativeness. (2) A material supply pipe downstream from the fourth gate valve is connected to a high-pressure gas source via a second high-pressure gas supply pipe provided with a fifth gate valve, and the powder material is transferred from the pressurized tank to the high-pressure container. The powder material was supplied by the two-stage pressurization, so that the powder material did not stay in the material supply pipe between the fourth gate valve and the high-pressure vessel, even when the specific gravity was large. (3) Since one flap valve is provided at the protruding end of the material discharge pipe, the system configuration of the weight control feeder and the pressurized tank pipe is simplified. (4) Since the play is formed in the support portion of the flap valve, the sealing property of the opening of the material discharge pipe is improved, and the accuracy is improved.

[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 detailed side view of the pressurized tank of FIG.

FIG. 3 is a configuration diagram showing an open state of a flap valve of FIG. 2;

FIG. 4 is a detailed configuration diagram showing a main part of FIG. 2;

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is an operation chart of the supply device according to the present invention.

FIG. 7 is a configuration diagram showing a conventional apparatus for supplying a powder material to a high-pressure container.

[Explanation of symbols]

 Reference Signs List 10 supply device 11 material discharge pipe 14 material supply pipe 15 second high-pressure gas supply pipe 16 high-pressure gas source 20 weight control feeder 30 pressurized tank 32 air cylinder 45 fifth gate valve 46 flap valve

Claims (4)

[Claims] 1. A pressurized tank (3) from a weight control feeder (20).
0) in the method of supplying the powder material to the high-pressure container so that the powder material is supplied by constant force from the pressurized tank (30) to the high-pressure container (50) to the high-pressure container (50); The powder material supplied from the feeder (20) is intermittently received in the pressurized tank (30) by opening and closing a flap valve (46) provided in the pressurized tank (30). Of supplying powder material to a high-pressure vessel. 2. A weight control feeder (20) and a pressurized tank (30) disposed below the weight control feeder (20), and an outlet of the weight control feeder (20) and a top of the pressurized tank (30) are formed. Connected by a material discharge pipe (11), the pressurized tank (30)
Is connected to a high-pressure gas source (16) via a high-pressure gas supply pipe (12) provided with a second gate valve (42) and a gas exhaust pipe (13) provided with a third gate valve (43). A high-pressure vessel connected and opened to the atmosphere, wherein the bottom of the pressurized tank (30) and the high-pressure vessel (50) are supplied by a material supply pipe (14) provided with a fourth gate valve (44). In the powder material supply apparatus, a tip of the material discharge pipe (11) is protruded into the pressurized tank (30), and a flap valve (46) is provided at a tip of the material discharge pipe (11). An apparatus for supplying a powder material to a high-pressure container. 3. The flap valve (46) according to claim 2, wherein the pin (100) connection between the valve body (46a) and the support (46b) is formed with a gap. Supply device for powder material to high pressure vessel. 4. The high-pressure gas supply pipe (14) provided downstream of the fourth gate valve (44) through a second high-pressure gas supply pipe (15) provided with a fifth gate valve (45). 4. The apparatus according to claim 2, wherein the apparatus is connected to a gas source.