KR101866368B1 - Metal Seat Ball Valve Scattering Shipment Particles - Google Patents

Metal Seat Ball Valve Scattering Shipment Particles Download PDF

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Publication number
KR101866368B1
KR101866368B1 KR1020160171386A KR20160171386A KR101866368B1 KR 101866368 B1 KR101866368 B1 KR 101866368B1 KR 1020160171386 A KR1020160171386 A KR 1020160171386A KR 20160171386 A KR20160171386 A KR 20160171386A KR 101866368 B1 KR101866368 B1 KR 101866368B1
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KR
South Korea
Prior art keywords
metal sheet
valve body
valve
pressure gas
powder
Prior art date
Application number
KR1020160171386A
Other languages
Korean (ko)
Inventor
오승천
정우현
전동환
윤성필
권인구
옥영재
이종경
Original Assignee
고등기술연구원연구조합
한국서부발전(주)
주식회사 컴버스텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 고등기술연구원연구조합, 한국서부발전(주), 주식회사 컴버스텍 filed Critical 고등기술연구원연구조합
Priority to KR1020160171386A priority Critical patent/KR101866368B1/en
Application granted granted Critical
Publication of KR101866368B1 publication Critical patent/KR101866368B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

The present invention relates to a powder scattering type metal sheet ball valve, and more particularly, to a powder spraying type metal sheet ball valve which is capable of maintaining high airtightness by scattering powder adhered or accumulated around a ball contact surface of a metal sheet, To a non-acid type metal seat ball valve.
The present invention relates to a powder scattering type metal-sheet ball valve comprising: a valve housing having a powder transport path therein; A valve body disposed in the powder transport path and rotating to control opening and closing of the powder transport path; A metal sheet disposed so as to face each other with the valve body interposed therebetween; And a high-pressure gas pipe for supplying a high-pressure gas to the metal sheet, wherein the metal sheet has a first outlet for injecting a high-pressure gas in a direction parallel to the powder transport passage direction; And a second discharge port formed in the inner periphery of the metal sheet for discharging the high-pressure gas toward the center of the metal sheet.

Description

Technical Field [0001] The present invention relates to a metal sheet ball valve,

The present invention relates to a powder scattering type metal sheet ball valve, and more particularly, to a powder spraying type metal sheet ball valve which is capable of maintaining a gas-tight property by scattering powder adhered or accumulated around a ball contact surface of a metal sheet, To a non-acid type metal seat ball valve.

Pipes are used for the conveyance of various fluids and powders. These pipes are generally provided with valves for controlling the fluid and powder to be transferred.

Conventional knife gate valves and butterfly valves are widely used for such valves. The knife gate valve has a valve disc vertically lifted and lowered to come in contact with a valve seat fixedly mounted on the valve body to block the flow of the fluid, and the butterfly valve is used in a form in which a valve seat is coupled to a rotating valve disc .

In recent years, in order to increase the airtightness, a technique has been widely used in which, when air or the like is supplied using a valve seat made of rubber, the valve seat is inflated to prevent leakage of the fluid.

Such an inflated seat valve can be classified into a dome valve type, a butterfly valve type, a gate valve type, or the like, depending on the type of blocking disc constituting the valve and the operating method. These expansion sheet valves all have a structure in which air is supplied to a valve seat provided to maintain airtightness to expand the valve seat, and then the valve seat is brought into close contact with the outer peripheral surface of a rotating hemispherical or planar shielding disk.

A conventional expansion valve valve is widely used because it is advantageous in that airtightness is maintained even when a part of the powder in the fluid passing through the valve is sandwiched between the intercepting disk and the inflated sheet. However, There is a problem in that the powder is filled between the shielding discs, thereby damaging the inflated sheet and lowering the airtightness.

In addition, the process of power plants and chemical plants in which expansion valve valves are mainly used is usually carried out at a high temperature. Therefore, the powders to be conveyed are also often at high temperatures. Since valve sheets are generally made of rubber or fluorine rubber, There have been considerable limitations on durability.

(Document 1) Korean Patent Registration No. 10-1574367 (Feb.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems as described above, and it is an object of the present invention to solve the problem of sheet damage and airtightness deterioration due to powder aggregation occurring when the expansion valve valve is opened and closed and restriction of application at high temperature.

According to an aspect of the present invention, there is provided a valve apparatus comprising: a valve housing having a powder transport passage therein; A valve body disposed in the powder transport path and rotating to control opening and closing of the powder transport path; A metal sheet disposed so as to face each other with the valve body interposed therebetween; And a high-pressure gas pipe for supplying a high-pressure gas to the metal sheet, wherein the metal sheet has a first outlet for injecting a high-pressure gas in a direction parallel to the powder transport passage direction; And a second discharge port formed in the inner periphery of the metal sheet for spraying a high-pressure gas toward the center of the metal sheet.

It is preferable that the high-pressure gas injection direction of the first outlet and the high-pressure gas injection direction of the second outlet are perpendicular to each other.

The metal sheet may have a concave groove formed on an inner circumferential surface thereof, and the second outlet may be formed in the concave groove.

A valve body operating portion coupled to the valve body to adjust the rotation of the valve body; A solenoid valve installed in the high-pressure gas pipe for regulating opening and closing of the high-pressure gas pipe; And a controller for controlling the solenoid valve according to a signal from the valve body actuating part.

The control unit, which receives the operation signal of the valve body operation unit while the valve body is rotated by the valve body operation unit, opens the solenoid valve so that high pressure gas is supplied to the valve body contact surface It is preferable to spray it around.

Wherein the valve body operating portion includes: a shaft coupled to the valve body to transmit rotational motion; And an actuator for driving the shaft.

And a sheet retainer formed asymmetrically on both sides of the valve body and formed in close contact with the metal sheet so as to press the metal sheet toward the valve body.

The metal sheet of the present invention can be applied to a high-temperature and high-pressure process by forming a discharge port so as to scatter powder by high-pressure gas, and it is possible to prevent sheet damage and airtightness deterioration due to powder coating upon repeated valve opening and closing.

In addition, by suppressing powder inflow between the metal sheet and the valve body, it is possible to prevent the malfunction of the valve, reduce the wear rate of the metal sheet and the valve body, increase the period of maintaining the airtightness between the metal seat and the valve body, There is an effect of improvement.

FIG. 1 is a schematic view of a powder scattering type metal sheet ball valve according to an embodiment of the present invention.
FIG. 2 is a view showing a metal sheet of a powder scattering type metal sheet ball valve according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following embodiments can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments.

FIG. 1 is a view schematically showing a powder scattering type metal seat valve according to an embodiment of the present invention, and FIG. 2 is a view showing a metal sheet of a powder scattering type metal seat valve according to an embodiment of the present invention .

1, the powder-scattering type metal-sheet ball valve according to an embodiment of the present invention is disposed in a valve housing 100 and a powder transport passage 105 in which a powder transport passage 105 is provided A metal sheet 120 having a valve body 110 for controlling the opening and closing of the powder transport path 105 by rotation and disposed so as to face each other with the valve body 110 therebetween, And a high-pressure gas pipe 130 for supplying gas.

Metal sheet valves are valves that can be installed to control the transport of these fluids and powders to pipes for the transport of various fluids and powders in processes such as power plants and chemical plants.

A valve body 110 for opening and closing the powder transport path is disposed in the valve housing 100 provided with the powder transport path 105 through which the powder is transported and when the valve is shut off, The powder transport is stopped.

The valve body 110 for opening and closing the powder transport passage 105 may be generally made of a hard-coated metal, but may also be made of other durable materials.

The valve body 110 is in the shape of a ball having an open center and has a hollow interior so as to form a sufficient powder transport passage when the valve body 110 is rotated 90 degrees when the valve is opened. Or open and close the valve, and the metal sheet 120 disposed to face each other can be closely contacted to maintain airtightness.

In another embodiment of the valve body, the valve body is formed in the form of a hemispherical shielding disk so that the powder transport passage can be opened and closed while rotating at 90 degrees.

In the case where the pressure of the powder is high, only a valve body having a ball or hemispherical disc shape may cause a clearance to allow the powder to escape, thus preventing complete powder transport. It is possible to provide a metal sheet 120 which can increase the airtightness so that the airtightness can not be maintained.

Conventionally, rubber is a representative material of a seat that maintains airtightness with a valve body. The operating temperature of the ordinary rubber is about 70 to 80 DEG C and the suitable temperature is about 150 DEG C or less for a VITON material which is a fluorine rubber. Since sheets of such a material have a considerable application limitation in a high temperature process, A coated metal sheet can be applied.

On the other hand, as the powder transport passage 105 is repeatedly opened and closed, a part of the powder to be transported can be adhered to the metal sheet 120 or around the metal sheet 120, It may be necessary to remove the metal sheet 120 from the metal sheet 120 because the metal sheet 120 may be prevented from being completely adhered to the metal sheet 120 and may be damaged.

Accordingly, in the present invention, the discharge ports 121 and 122 for injecting the high-pressure gas into the metal sheet 120 are provided so that the high-pressure gas is sprayed from the metal sheet 120 to the surface of the valve element 110 during the ball valve opening / closing operation, 110 and the metal sheet 120 and the powder remaining on the surface of the valve body 110 can be scattered to suppress powder inflow into the space between the metal sheet 120 and the valve body 110.

That is, the metal sheet 120 is formed on the inner periphery of the metal sheet 120 and has a first outlet 121 for injecting the high-pressure gas in a direction parallel to the direction of the powder transport passage 105, And a second outlet 122 for injecting the high-pressure gas in the center direction.

The metal sheet 120 may have a concave groove 125 formed in the inner circumferential surface thereof and a second outlet 122 formed in the concave groove 125 so that the high pressure gas The injection direction and the high-pressure gas injection direction of the second discharge port 122 may be perpendicular to each other.

A valve body operating portion 140 coupled to the valve body 110 to adjust the rotation of the valve body 110 and a solenoid valve 140 installed in the high pressure gas pipe 130 for controlling opening and closing of the high pressure gas pipe 130, A valve 135 and a control unit 136 for controlling the solenoid valve 135 according to signals from the valve body actuating unit 140. [

The controller 136 receiving the operation signal of the valve body actuating part 140 while the valve body 110 rotates (for example, for 10 seconds) by the valve body actuating part 140 opens the solenoid valve 135 The high pressure gas is sprayed around the contact surface of the valve body 110 through the first or second discharge ports 121 and 122 and is sprayed onto the surface of the powder and valve body 110 which is filled in the space between the valve housing 100 and the valve body 110 It is possible to prevent the malfunction of the ball valve caused by the powder that has accumulated during the rotation of the valve body 110 and to prevent the powder from flowing between the valve body and the metal sheet.

The valve body actuating part 140 can be operated in various ways and includes a shaft 141 coupled to the valve body 110 for transmitting rotational motion and an actuator 142 for driving the shaft 141 .

The shaft 141 is connected to one end or both ends of the valve body 110 and the shaft 141 is rotated by the operation of the actuator 142. The valve body 110 is rotated by the rotation of the shaft 141 Thereby controlling the opening and closing of the powder transport passage 110.

The inlet of the high-pressure gas pipe 130 may further include a pressure control unit for measuring and controlling the pressure of the high-pressure gas inside the valve.

A sheet retainer formed asymmetrically on both sides of the valve body 110 and formed in close contact with the metal sheet 120 so as to press the metal sheet 120 toward the valve body 110 may be further provided.

The operation of the powder scattering type metal seat valve according to one embodiment of the present invention will be briefly described.

The control unit 136 sends an actuating signal of the actuator 142 to the control unit 136 in response to an actuating signal of the actuator 142. When the solenoid valve 135 is interlocked with the solenoid valve 135, Pressure gas is injected through the first or second discharge ports 121 and 122 of the metal sheet 120 during the rotation of the valve body 110 so that the surface of the valve body 110 and the powder transport path 105 of the valve body 110 When the opening and closing operation of the valve body 110 is stopped, the high-pressure gas injection is also blocked through the solenoid valve 135.

The powder deposited on the space between the valve housing 100 and the valve element 110 due to the high pressure gas injected from the metal sheet 120 and the powder remaining on the surface of the valve element 110 scatter, It is possible to prevent a malfunction of the valve caused by the powder that is accumulated at the time of rotation and suppress the inflow of the powder into the space between the valve body 110 and the metal sheet 120.

In addition, by suppressing the inflow of powder between the metal sheet 120 and the valve body 110, it is possible to prevent the malfunction of the valve, the wear rate of the metal sheet and the valve body, and the period of maintaining the airtightness between the metal seat and the valve body, Durability, reliability, and switching cycle.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is.

100: valve housing 110: valve body
120: metal sheet 121: first outlet
122: second outlet 130: high pressure gas piping
135: Solenoid valve 136:
140: valve body operating part 141: shaft
142: Actuator

Claims (7)

A valve housing having a powder transport path therein;
A valve body disposed in the powder transport path and rotating to control opening and closing of the powder transport path;
A metal sheet disposed so as to face each other with the valve body interposed therebetween;
A high-pressure gas pipe for supplying a high-pressure gas to the metal sheet;
A valve body operating portion coupled to the valve body to adjust the rotation of the valve body;
A solenoid valve installed in the high-pressure gas pipe for regulating opening and closing of the high-pressure gas pipe; And
And a control unit for controlling the solenoid valve according to a signal of the valve body operation unit,
Wherein the metal sheet
A first discharge port for spraying the high-pressure gas in a direction parallel to the powder transport path direction; And
And a second outlet formed in the inner periphery of the metal sheet for spraying a high-pressure gas toward the center of the metal sheet.
The method according to claim 1,
Wherein the high pressure gas injection direction of the first discharge port and the high pressure gas discharge direction of the second discharge port are perpendicular to each other.
The method according to claim 1,
The metal sheet has a concave groove formed on an inner peripheral surface thereof,
And the second outlet is formed in the concave groove.
delete The method according to claim 1,
While the valve body is rotated by the valve body operating portion,
Wherein the control unit receives the operation signal of the valve body operation unit to open the solenoid valve to cause the high pressure gas to be sprayed around the valve body contact surface through the first or second outlet.
The method according to claim 1,
Wherein the valve-
A shaft coupled to the valve body to transmit rotational motion; And
And an actuator for driving the shaft.
The method according to claim 1,
And a sheet retainer formed asymmetrically on both sides of the valve element and formed in close contact with the metal sheet so as to press the metal sheet toward the valve element side.
KR1020160171386A 2016-12-15 2016-12-15 Metal Seat Ball Valve Scattering Shipment Particles KR101866368B1 (en)

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KR1020160171386A KR101866368B1 (en) 2016-12-15 2016-12-15 Metal Seat Ball Valve Scattering Shipment Particles

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220212237A1 (en) * 2021-01-04 2022-07-07 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US12011745B2 (en) * 2022-11-10 2024-06-18 Flowserve Pte. Ltd. Ball valve with downstream residue purge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616774U (en) * 1992-08-05 1994-03-04 日本バルカー工業株式会社 Ball valve
JPH09242893A (en) * 1996-03-04 1997-09-16 Hitachi Valve Kk Ball valve
KR101574367B1 (en) 2008-07-15 2015-12-03 티센크루프 인더스트리얼 솔루션스 아게 Method and device for igniting and operating burners when gasifying carbon-containing fuels
US20160258541A1 (en) * 2013-10-31 2016-09-08 Clyde Process Limited Powder Isolating Valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616774U (en) * 1992-08-05 1994-03-04 日本バルカー工業株式会社 Ball valve
JPH09242893A (en) * 1996-03-04 1997-09-16 Hitachi Valve Kk Ball valve
KR101574367B1 (en) 2008-07-15 2015-12-03 티센크루프 인더스트리얼 솔루션스 아게 Method and device for igniting and operating burners when gasifying carbon-containing fuels
US20160258541A1 (en) * 2013-10-31 2016-09-08 Clyde Process Limited Powder Isolating Valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220212237A1 (en) * 2021-01-04 2022-07-07 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US11839908B2 (en) * 2021-01-04 2023-12-12 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US12011745B2 (en) * 2022-11-10 2024-06-18 Flowserve Pte. Ltd. Ball valve with downstream residue purge

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