KR101618297B1 - Auto Flow Stop Unit - Google Patents

Auto Flow Stop Unit Download PDF

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Publication number
KR101618297B1
KR101618297B1 KR1020150122877A KR20150122877A KR101618297B1 KR 101618297 B1 KR101618297 B1 KR 101618297B1 KR 1020150122877 A KR1020150122877 A KR 1020150122877A KR 20150122877 A KR20150122877 A KR 20150122877A KR 101618297 B1 KR101618297 B1 KR 101618297B1
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KR
South Korea
Prior art keywords
cylinder body
equalizing
fluid
secondary side
needle valve
Prior art date
Application number
KR1020150122877A
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Korean (ko)
Inventor
이기운
이정철
Original Assignee
주식회사파워테크
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Priority to KR1020150122877A priority Critical patent/KR101618297B1/en
Application granted granted Critical
Publication of KR101618297B1 publication Critical patent/KR101618297B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/18—Switches operated by change of liquid level or of liquid density, e.g. float switch

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The present invention relates to an automatic flow cutoff device that can be used in a plant facility or the like, and includes a cylinder body 110 in which a flow path 111 and an equalizing flow path 112 are formed; An equalizing valve assembly 120 used as an auxiliary means for forming the same pressure at the primary inlet and the secondary outlet of the cylindrical body 110; A tubular adapter 130 disposed in the secondary side outlet direction of the cylinder body 110 and having a secondary side flow hole 131 to be connected to the equalizing flow path 112 at one end thereof; A fluid type diaphragm spool (140) arranged to be slidable and slidable to act as a diaphragm in the flow path (111) of the cylinder body (110) and to exert a shutoff function for leakage; And return springs (150) located on both side walls of the fluid type diaphragm spool (140).
According to the present invention, it is possible to automatically shut off and completely shut off the leakage of a measuring instrument generated during normal operation of a plant facility, effectively prevent a facility accident, a personnel accident or a fire accident caused by a secondary damage situation And can be prevented.

Description

Automatic Flow Stop Unit

The present invention relates to an automatic flow shutoff device for automatically shutting down a pressure measuring instrument classified as a very important equipment for process monitoring on a plant site, and more particularly, The present invention relates to an automatic flow cutoff device that can prevent a secondary damage from occurring when a leakage of a meter is completely prevented.

Generally, a plant facility is installed in many industrial sites, and has piping for the flow of various fluids, and fluids such as combustion oil, lubricating oil or high pressure hydraulic fluid (HPU) are supplied through the piping.

In the field of the plant facility where the flow for supplying the fluid is provided through the piping, a fluid monitoring pressure or differential pressure meter is used to monitor and control the combustion monitoring oil, the lubricating oil, the high pressure fluid (HPU) have.

However, there is a case where leakage of fluid occurs in the measuring apparatus during normal operation of the plant facility. Fluids such as combustion oil, lubricating oil or high pressure operating fluid (HPU) have harmful or flammable properties. Or physical and personal damage may occur.

In addition, when fluid leakage occurs, secondary damage such as a facility accident, a personnel accident, or a fire accident caused by leakage can occur. Therefore, a measure is required to effectively block the leakage of the measuring instrument.

Korean Patent Publication No. 10-2004-0105520

Disclosure of Invention Technical Problem [8] The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to prevent leakage of harmful substances or flammable fluids to the outside by automatically shutting off leakage of a meter, And an object thereof is to provide an automatic flow cutoff device capable of eliminating a fire or physical and personal damage in advance.

The present invention can be installed in front of an instrument such as pressure measurement widely used in a plant facility to completely block the leakage of the instrument, and it is possible to prevent an equipment accident, personnel accident, And to provide an automatic flow shutoff device that can prevent and effectively prevent a fire accident caused by leakage.

The present invention relates to an automatic flow cut-off device which has a cylindrical body so that the fluid type diaphragm spool can be moved, and which can completely block the flow path by the fluid type diaphragm spool when the fluid leaks, The purpose is to provide.

According to an aspect of the present invention, there is provided an automatic flow cut-off device including an oil passage 111 formed therein, an equalizing flow path connected to the oil passage 111 for guiding fluid to a secondary side, A cylinder body 110 in which a cylinder block 112 is formed; An equalizing valve 112 which is mounted on the cylinder body 110 to open and close the equalizing passage 112 and which serves as an auxiliary means for initially forming the same pressure at the primary inlet and the secondary outlet of the cylinder body 110, Assembly 120; A tube body mounted on the flow path 111 of the cylinder body 110 and arranged in the direction of the outlet of the secondary side of the cylinder body 110 and connected to the equalizing flow path 112 on one side of the tip end thereof, A tubular adapter 130 having a secondary side flow hole 131 formed therein; And is disposed so as to perform a diaphragm action in the flow path 111 of the cylinder body 110 and is slidably movable so as to allow pressure to be transmitted to the secondary side so that the same pressure is maintained between the primary side and the secondary side at normal times, A fluid type diaphragm spool (140) arranged to exert a fluid blocking function in the cylinder body (110) while moving in a flow direction; Return springs (150) for automatically returning the fluid type diaphragm spool (140) to the initial installation position when the fluid is in a normal state without leakage of fluid, the elastic springs being inserted and positioned on both side walls of the fluid type diaphragm spool (140). And a control unit.

Here, the microswitch 160 is mounted on the outer wall of the cylinder body 110 and is positioned around the floating type diaphragm spool 140, and has electrical contacts. Further comprising a magnet (170) embedded in the floating diaphragm spool (140), wherein upon leakage of the meter (1) connected to the outlet of the secondary side of the cylinder body (110) The micro switch 160 is moved in the flow direction of the fluid and moves to the secondary side. The magnetic contact of the magnet 170 activates the electrical contact of the micro switch 160, So that it is possible to reduce the size of the apparatus.

Here, the equalizing valve assembly 120 includes a needle valve adapter 121 mounted on the cylinder body 110; An equalizing needle valve 122, which is disposed in the needle valve adapter 121 so as to be partially inserted into or screwed into the needle valve adapter 121, and which is used to open and close the equalizing passage 112 according to the movement of the needle valve adapter 121; And a needle valve sealing material 123 positioned between the cylinder body 110 and the needle valve adapter 121 for sealing the assembly part.

The micro switch 160 is electrically connected to the alarm unit and the alarm circuit so that the micro switch 160 can easily check whether there is an abnormality in the control room in the control room for controlling the facility.

Here, the cylinder body 110 is made of stainless steel 316 to ensure durability to withstand a permissible pressure of 400 bar or more, and to satisfy corrosion resistance.

According to the present invention, it is possible to prevent leakage of toxic substances or flammable fluids to the outside by automatically shutting off the leakage of the measuring instrument generated during normal operation of the plant facility, and thereby, occurrence of fire, physical and personal damage A useful effect that can be prevented in advance can be achieved.

In other words, in the plant facility, it is possible to completely block the leakage of the measuring instrument, thereby effectively preventing or preventing the equipment accident, personnel accident or leakage caused by the secondary damage.

The present invention can completely block the flow path to prevent leakage through the flow type diaphragm spool when the meter leaks, and can provide usefulness for automatically returning to the initial installation state when the equipment is switched to the normal state.

The present invention can activate the electrical contacts of the microswitch in response to the movement of the flow type diaphragm spool when the instrument is leaked through the structure including the microswitch and the magnet, It is possible to provide usefulness in the control room for controlling the facility through the connection of the control unit and the like.

1 is a cross-sectional view of an automatic flow cut-off device according to an embodiment of the present invention.
2 is an exemplary view showing an operation state of an automatic flow cutoff device according to an embodiment of the present invention.
3 is a preferential view showing the operation principle of the automatic flow cutoff device according to the embodiment of the present invention.
4 is a 3D view showing a combined structure of an automatic flow cutoff device according to an embodiment of the present invention.
5 is a 3D diagram illustrating an exploded configuration of an automatic flow cutoff device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

1 to 5, the automatic flow cut-off device 100 according to an embodiment of the present invention includes a cylinder body 110, a bypass assembly 120, a tubular adapter 130, a fluid type diaphragm spool 140, A return spring 150, a micro switch 160, and a magnet 170. As shown in Fig.

The cylinder body 110 is a main body for constituting the apparatus. The cylinder body 110 is formed with a flow path 111 for a fluid to be supplied therein. The cylinder body 110 is connected to the flow path 111, An equalizing passage 112 for guiding and supplying the air from the primary inlet to the secondary outlet is formed.

At this time, it is preferable that the cylinder body 110 is made of stainless steel 316 in order to ensure durability to withstand a permissible pressure of 400 bar or more according to the supply of the fluid, and to satisfy corrosion resistance , Thereby increasing the service life.

Here, a hollow passage 111 formed in the cylindrical body 110 is formed in the longitudinal direction of the tubular adapter 130, the floating diaphragm spool 140, and the return spring 150, Can be formed.

Here, the cylinder body 110 is preferably formed as a separable / coupled type body so that components such as the floating diaphragm spool 140 and the return spring 150 can be more easily installed into the flow path 111 In order to prevent the user from making mistakes in assembling the component parts, the installation direction may be indicated on the outer surface so that the user can be provided with clarity in assembly.

The cylinder body 110 is installed at the front end of the meter 1 for monitoring the normal operation of the equipment and the meter 1 is connected to the outlet of the secondary side of the cylinder body 110.

The equalizing valve assembly 120 is mounted on the cylinder body 110 to open and close the equalizing passage 112. The equalizing valve assembly 120 is provided at the inlet and the outlet of the secondary side of the cylinder body 110 at the initial stage of operation of the apparatus. It is a configuration for use as an auxiliary means for forming pressure.

The equalizing valve assembly 120 includes a needle valve adapter 121 mounted on the cylinder body 110 and a needle valve adapter 121 mounted on the needle valve adapter 121 An equalizing needle valve 122 provided to open or close the equalizing flow passage 112 in accordance with the movement of the movable body 110 and the needle valve adapter 121, And a needle valve sealing member 123 for sealing the sealing member.

Here, the needle valve adapter 121 can be fixedly coupled to the cylinder body 110 with a screw-fastening structure as shown in the figure.

As shown in the figure, the equalizing needle valve 122 is coupled to the needle valve adapter 121 by a screw fastening structure, and can be moved according to the screwing force. The equalizing needle valve 122, The equalizing channel 112 can be opened or closed.

In this structure, it is preferable to use an operation handle in combination with the equalizing needle valve 122 for driving the positional movement of the equalizing needle valve 122.

That is, the equalizing needle valve 122 is located at one side of the equalizing flow path 112 at the lower end thereof, and opens and closes the equalizing flow path 112 according to the position shifting state.

Here, it is preferable that the needle valve sealing material 123 uses a graphite-based grand seal.

The tubular adapter 130 is a tubular body having an inner hollow and mounted on the flow path 111 of the cylinder body 110. The tubular adapter 130 is assembled and fixed in the direction of the outlet of the secondary side of the cylinder body 110, .

At this time, the tubular adapter 130 is formed with a secondary side flow hole 131 to be connected to the equalizing flow path 112 at one side of the tip end of the tubular adapter 130. The secondary side flow hole 131 is connected to the internal hollow, And the same pressure on the secondary side.

As shown in the figure, the tubular adapter 130 is preferably fixedly coupled to the cylinder body 110 in a screwed fastening structure. In order to prevent leakage at an assembly connection portion with the cylinder body 110, It is preferable that the Viton O ring 101 made of a rubber material is inserted and arranged.

Here, the tubular adapter 130 is formed with a recessed step portion that is recessed toward the outlet side of the flow path 111 for stable fixing of the return spring 150 at the tip portion toward the fluid type diaphragm spool 140 .

The flow-type diaphragm spool 140 is a circular body disposed to be slidable in the flow path 111 of the cylinder body 110. The flow-type diaphragm spool 140 is provided to perform a diaphragm action so that a flow rate is not formed in the flow path 111, The pressure of the fluid flowing in the flow path 111 in the flow path 111 is made to flow to the secondary side so that the primary side and the secondary side are maintained at the same pressure, to be.

At this time, as shown in the figure, the floating type diaphragm spool 140 is preferably provided with recesses that are recessed in the inward direction with respect to the both side surfaces for the stable fixing arrangement of the return spring 150, I can do it.

The return spring 150 is an elastic body inserted and positioned on both side walls of the fluid type diaphragm spool 140. When the fluid type diaphragm spool 140 is in a normal state without fluid leakage, And automatically returns to the initial installation position when the flow-type diaphragm spool 140 is normally returned from the state in which the flow-type diaphragm spool 140 is positioned at the time of leakage.

That is, when the meter 1 connected to the outlet of the secondary side of the cylinder body 110 leaks, the fluid type diaphragm spool 140 moves in the flow direction of the fluid and moves to the secondary side, 110 so as to completely block the flow of the fluid.

The microswitch 160 is a switching element having an electrical contact, which is mounted on the outer wall of the cylinder body 110 and is located in the vicinity of the floating diaphragm spool 140.

Preferably, the magnet 170 is embedded in the floating diaphragm spool 140 as a matching structure for activating the electrical contacts of the microswitch 160.

At this time, it is preferable that the magnet 170 is provided on a side of the flow-type diaphragm spool 140 toward the flow path outlet side.

With this configuration, when the meter 1 connected to the outlet of the secondary side of the cylinder body 110 leaks, the fluid type diaphragm spool 140 moves in the flow direction of the fluid due to the secondary pressure reduction, At this time, the electrical contact of the microswitch 160 can be activated by the magnetism of the magnet 170.

That is, the micro switch 160 and the magnet 170 can easily recognize the operation state including the leakage through the additional matching structure, so that it is possible to immediately check the abnormality of the equipment at the time of leakage.

In addition, the micro switch 160 is electrically connected to the alarm means and the alarm circuit so that an alarm is generated through the activation signal of the electrical contact. Thus, in the control room that controls the facility, So that it can be easily confirmed.

The operation of the automatic flow cutoff device 100 according to the present invention having the above-described configuration will now be described.

A fluid supply pipe is connected to the inlet of the primary body of the cylinder body 110 so that the fluid is supplied to the primary inlet of the cylinder body 110. A meter 1 is connected to the secondary outlet of the cylinder body 110 to monitor the operation state of the facility .

When the fluid as a supply object flows into the primary inlet of the cylinder body 110 and the meter 1 connected to the outlet of the secondary is in a normal state, the equalizing valve assembly 120 is initially opened, So that the pressures of the primary side and the secondary side of the cylinder body 110 are formed to be equal to each other.

At this time, the fluid introduced into the cylinder body 110 passes through the equalizing channel 112 and the secondary channel hole 131 connected thereto, thereby supplying the fluid to the secondary side through the tubular adapter 130.

When the pressures of the primary side and the secondary side of the cylinder body 110 are formed to be the same through this operation, the state of the operation of the facility can be monitored through the pressure detection in the measuring instrument 1, so that the equalizing valve assembly 120 ) To close the fluid supply.

In this case, if the supply of fluid to the secondary side is interrupted through the equalizing valve assembly 120, the Pascal principle (the principle that a fluid in an enclosed space is subjected to the same pressure at any place in the space when a pressure is applied from one place) The diaphragm spool 140 maintains the pressure transmission state from the initial installation state to the secondary side by the supporting force of the return spring 160, that is, the same pressure is continuously maintained on the primary side and the secondary side.

If leakage of the fluid occurs due to fatigue accumulation or the like of the measuring instrument 1 in such a steady state, the pressure drop of the secondary side is made and the pressure is reduced, whereby the same pressure forming relationship between the primary side and the secondary side is broken.

When the leakage occurs, the fluid type diaphragm spool 140 moves in the fluid flow direction (supply direction) to move and completely block the fluid in the cylinder body 110, As shown in FIG.

Here, when the fluid type diaphragm spool 140 moves in the flow direction of the fluid in the direction of the secondary side outlet when the meter 1 leaks, the magnet 170 built in the fluid type diaphragm spool 140 is moved to the microswitch 160). Therefore, the electrical contact is activated by the magnetism. Through this, it is possible to more easily recognize the operation state including the leakage or the like, and in particular, when the instrument 1 is leaked, You can provide the advantages that you have.

In addition, when the microswitch 160 is electrically connected to the alarm means or the alarm circuit, it is possible to immediately generate an alarm or an alarm in addition to the leakage, thereby allowing the control room to control the facility more easily and quickly And can provide advantages that enable quick response.

Further, when the leak of the measuring instrument 1 is released or the measuring instrument 1 is replaced and the equipment is in a normal state, the pressure of the primary side and the secondary side is maintained again through the opening of the equalizing valve assembly 120, The return spring 150, which has been compressed by the same pressure forming between the primary side and the secondary side, is returned to the original state, and the flow type diaphragm spool 140 is normally returned to the initial installation position.

Here, even when the primary side of the flow path 111 in the cylinder body 110 becomes pressureless, the fluid type diaphragm spool 140 is automatically returned to the initial steady state installation position due to the action of the return spring 150.

When the leak of the measuring instrument 1 is released or when the measuring instrument 1 is replaced and restarted, the equalizing valve assembly 120 is initially operated to form the pressure of the primary side and the secondary side of the cylinder body 110 at the same time, It is required to open and close the equalizing flow channel 112 through the opening / closing operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It will be apparent that various modifications and changes may be made by those skilled in the art.

100: Automatic flow cut-off device 110: Cylinder body
111: EURO 112: EQUALIZING EURO
120: equalizing valve assembly 121: needle valve adapter
122: equalizing needle valve 123: needle valve sealing material
130: tubular adapter 131: secondary side flow hole
140: fluid type diaphragm spool 150: return spring
160: Micro switch 170: Magnet

Claims (5)

A cylinder body 110 formed with an oil passage 111 therein and having an equalizing passage 112 connected to the oil passage 111 and guiding the fluid to a secondary side in the outlet direction;
An equalizing valve 112 which is mounted on the cylinder body 110 to open and close the equalizing passage 112 and which serves as an auxiliary means for initially forming the same pressure at the primary inlet and the secondary outlet of the cylinder body 110, Assembly 120;
A tube body mounted on the flow path 111 of the cylinder body 110 and arranged in the direction of the outlet of the secondary side of the cylinder body 110 and connected to the equalizing flow path 112 on one side of the tip end thereof, A tubular adapter 130 having a secondary side flow hole 131 formed therein;
And is disposed so as to perform a diaphragm action in the flow path 111 of the cylinder body 110 and is slidably movable so as to allow pressure to be transmitted to the secondary side so that the same pressure is maintained between the primary side and the secondary side at normal times, A fluid type diaphragm spool (140) arranged to exert a fluid blocking function in the cylinder body (110) while moving in a flow direction;
Return springs (150) for automatically returning the fluid type diaphragm spool (140) to the initial installation position when the fluid is in a normal state without leakage of fluid, the elastic springs being inserted and positioned on both side walls of the fluid type diaphragm spool (140). And an automatic flow shut-off device.
The method according to claim 1,
A microswitch 160 mounted on an outer wall of the cylindrical body 110 and positioned around the floating diaphragm spool 140 and having electrical contacts;
A magnet 170 embedded in the floating diaphragm spool 140; Further comprising:
When the meter 1 connected to the outlet of the cylinder body 110 leaks, the fluid type diaphragm spool 140 moves in the flow direction of the fluid due to the secondary pressure reduction, and moves to the secondary side. And the micro switch (160) is activated by the magnetic force of the magnetic switch (170) to easily recognize the operation state including leakage or not.
The method according to claim 1,
The equalizing valve assembly 120 includes:
A needle valve adapter 121 mounted on the cylinder body 110;
An equalizing needle valve 122, which is disposed in the needle valve adapter 121 so as to be partially inserted into or screwed into the needle valve adapter 121, and which is used to open and close the equalizing passage 112 according to the movement of the needle valve adapter 121;
A needle valve sealant 123 positioned between the cylinder body 110 and the needle valve adapter 121 for sealing the assembly portion; And an automatic flow shutoff device.
3. The method of claim 2,
The micro switch (160)
And an alarm circuit or an alarm circuit so as to be electrically connected to the control room so as to easily confirm whether there is an abnormality in the field.
The method according to claim 1,
Wherein the cylinder body (110) is made of stainless steel (316) to ensure durability to withstand a permissible pressure of 400 bar or more, and to satisfy corrosion resistance.
KR1020150122877A 2015-08-31 2015-08-31 Auto Flow Stop Unit KR101618297B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11266344B2 (en) 2016-09-21 2022-03-08 Samsung Electronics Co., Ltd. Method for measuring skin condition and electronic device therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101466919B1 (en) 2013-10-16 2014-12-03 주식회사 협성히스코 Pressure leakage cutoff automatic valve for pressure gauge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101466919B1 (en) 2013-10-16 2014-12-03 주식회사 협성히스코 Pressure leakage cutoff automatic valve for pressure gauge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11266344B2 (en) 2016-09-21 2022-03-08 Samsung Electronics Co., Ltd. Method for measuring skin condition and electronic device therefor

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