KR101719731B1 - Goggles type gate valve for hydraulic sealing manner - Google Patents

Abstract

The present invention relates to a hydraulic sealing type goggle gate valve capable of preventing a leak of harmful gas by having enhanced airtightness and sealing force through a hydraulic sealing method in order to minimize accidents and environment pollution, which are caused by a leak of harmful when airtightness is not maintained. A body is formed into a predetermined shape, a disc is installed to be able to be moved from the inside of the body to a side, and a gas pipe, in which fuel gas flows, is sealed by moving the disc through a hydraulic cylinder, and thus, the airtightness is maintained. A disc sheet base of the disc unfolded from the hydraulic cylinder, is attached to a body sheet base installed in the body. At this moment, silicon in the disc sheet base is attached to the body sheet base, and as the silicon is soft, the silicon is pressurized between the body sheet base and the disc sheet base and then becomes widely flat to enhance the airtightness and sealing force.

Description

[0001] The present invention relates to a goggle type gate valve for a hydraulic sealing method,

The present invention relates to a hydraulic seal type goggle type gate valve installed in a power plant or a large-scale plant facility to block the discharge of flue gas. More specifically, the present invention relates to a goggle type gate valve, Type gate valve for preventing the risk of leakage of noxious gas by increasing the airtightness and sealing force by applying a hydraulic sealing method so as to minimize the risk of leakage of the noxious gas.

Generally, the gate valve moves the valve plate (valve disk) perpendicularly to the fluid flow to vertically open and close the fluid passage. When using a valve, open it completely and use it partially. If it is used partially, it will cause severe vortex on the surface of the valve plate, causing the valve to vibrate. The pressure loss is extremely small compared to the glow valve. It is widely used in large-scale plants and long and large piping.

Gate valve is a typical ON-OFF valve widely used in various industrial fields. The main purpose of the control is to maintain the valve disk at a temperature other than room temperature because there is no absorption tolerance from the disk for the thermal expansion and piping action of the valve. , There is a high possibility of sticking or leakage.

The above-mentioned valve disk can be divided into several as follows.

Flexible Wedge Gate Valve

Since the disk has a certain degree of flexibility on the sesting side of the disk, it can cope with the expansion and the action of the piping. Moreover, the disk has a wedge-like shape and acts on the seat surface.

Split Wedge Gate Valve Flexible Wedge

It is similar to a disk but has a structure in which the disk is completely separated. The connection of the disk is made up simply by using a mechanical ring or by the aid of a spring or the like. These valves are treated in the same category as flexible wedge gate valves, but they can be used for relatively high temperature (90 ° C or more) because they can respond more flexibly to piping forces such as bending of pipes. The valve sizes are usually medium- .

However, these valves are not widely used because they have fewer application advantages than the advantages of the following double disk gate valves.

Double Disc Gate Valve

Usually, the double disc gate valve is characterized in that the disc has a parallel structure. Therefore, a large-sized high-temperature high-pressure valve has many such structures and is also called a double disc parllel kate valve. It is mainly used in large-sized valves and is used when the operating temperature exceeds 100 ° C.

Since the gate valve constructed as described above is installed in a power plant or a large-scale plant facility and is used as a device for cutting off flue gas, a flue gas of a high temperature of about 200 to 400 ° C. and a high pressure of a fan pass, There is a problem that deformation becomes inevitable.

In addition, in order to repair and repair the desulfurization process of large-scale thermal power plants or other process and large-scale plant facilities, the flexible pipe connected to the pipe is separated and the flue gas is shut off using a separate panel.

In order to cut off the flue gas as described above, a large amount of bolts and nuts must first be loosened to separate the pipe from the flexible pipe, and a large amount of bolts and nuts are required to fix separate panels to one side of the pipe. The nuts were joined and fixed.

As the panel is manually fixed to one side of the pipe through the above-described method, it is difficult to completely shut off the flue gas, and the flue gas is not completely blocked, thereby causing environmental pollution and safety accidents due to the leakage of noxious gas.

In order to solve the above-mentioned problems, the present invention employs a hydraulic sealing method in order to minimize the risk of environmental pollution and safety accidents due to leakage of harmful gas because airtightness can not be maintained, thereby further increasing airtightness and sealing force, Type gate valve for preventing a risk of leakage of a goggle-type gate valve of a hydraulic seal type.

As a means for achieving the above object,

A plurality of bodies each having a square shape and spaced apart from each other and coupled to a gas pipe through which the flue gas moves; A guide rail installed at a lower portion of the body; A disk movably installed along the guide rail to closely contact both sides of the gas pipe through which the flue gas moves; A hermetic member for maintaining the airtightness between the body and the disk so as to prevent leakage of the flue gas; And a plurality of hydraulic cylinders provided between the plurality of discs so as to seal the gas pipe through which the disc is moved along the guide rail and the flue gas is moved.

In the body of the present invention, a plurality of body shafts are provided at regular intervals to firmly construct the body, and a coupling pipe penetrating from one side to the other is provided in a central portion of the body support, .

The disk of the present invention includes: a disk block installed at the center of the disk; A first guide bar installed horizontally in the disc block; A second guide bar spaced a predetermined distance from the first guide bar and configured on the lower side of the disc; A disc guide bar provided at a side end of the first guide bar and the second guide bar, respectively; And a support bar provided in a diagonal direction at a position where the second guide bar and the disc guide bar meet in the disc block to support the disc.

The plurality of discs of the present invention are each provided with a roller lug at a lower portion thereof, and a roller is rotatably installed in the roller lug so as to move along the guide rail.

The hermetic member of the present invention comprises: a plurality of body sheet bases provided along a plurality of inner circumferences of a body; A plurality of disk sheet bases installed along the outer periphery of the disk corresponding to the body sheet base; And a plurality of silicon pieces provided on the disc seat base so as to increase airtightness between the body sheet base and the disc seat base.

A hydraulic cylinder of the present invention is characterized in that a plurality of cylinder lugs are provided inside a plurality of disks and a plurality of cylinder lugs are provided to move the disk to seal the gas pipe through which the flue gas moves.

The present invention is further characterized in that a holder bar is further provided which is positioned to protrude from the upper portion of the disk by being coupled to the body so as to be positioned in a gas pipe through which the flue gas is caught by a hook of a moving device including a hoist or a crane.

The present invention is installed in a power plant or a large-scale plant facility to shut off the flue gas and maintain the sealing force without deformation of the disk due to the flue gas at a high temperature of about 200 to 400 ° C, thereby preventing environmental pollution .

The present invention has the effect that the body and the plurality of disks are guided to the correct position by being guided by the sides of the body so that the gas and the gas pipe to which the flue gas moves can be easily combined.

In addition, in the present invention, the disk opened around the hydraulic cylinder is closely adhered to the disk sheet base provided on the disk on the body sheet base provided on the body, the silicon provided on the disk sheet base is closely attached to the body sheet base, The pressing force is applied between the body seat base and the disc seat base to increase the sealing force and the airtightness.

In addition, even if there is a difference in height due to unbalance between the guide rail and the body, the body and the disk are sealed regardless of the unbalanced level within the range of the clearance error between the center axis of the disk and the hydraulic cylinder, The strong sealing force and the airtightness can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a hydraulic seal type goggle type gate valve according to the present invention; FIG.
FIG. 2 is a cross-sectional view showing the AA line configuration of FIG. 1; FIG.
3 is a sectional view showing the BB line configuration of Fig.
FIG. 4 is a front view showing a configuration of the disk of FIG. 1; FIG.
5 is an enlarged cross-sectional view showing an enlarged view of the configuration of part C of Fig. 3;
Fig. 6 is an enlarged cross-sectional view showing an enlarged configuration of the portion D in Fig. 3; Fig.
7 is an operational state view showing an operating state of a goggle type gate valve of a hydraulic sealing type according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hydraulic seal type goggle type gate valve according to the present invention will be described in detail with reference to the accompanying drawings.

The goggle type gate valve of the hydraulic sealing type according to the present invention is constructed as shown in Figs.

FIG. 1 is a front view showing a goggle-type gate valve of a hydraulic sealing type according to the present invention, FIG. 2 is a cross-sectional view showing the construction of line AA in FIG. 1, FIG. 3 is a cross- Fig. 5 is an enlarged cross-sectional view showing the configuration of part C in Fig. 3, Fig. 6 is an enlarged cross-sectional view showing an enlarged configuration of part D in Fig. 3, 7 is an operational state view showing the operation state of the goggle type gate valve of the hydraulic sealing type according to the present invention.

1 to 6, the goggle-type gate valve of the hydraulic sealing type according to the present invention is formed in a rectangular shape and is spaced apart from a predetermined distance so that a plurality of bodies (not shown) A plurality of guide rails 200 mounted on the lower part of the plurality of bodies 100 so as to allow a disk to move therebetween and a gas pipe A hermetic member 400 for maintaining the airtightness between the body 100 and the disc 300 so as to prevent leakage of the flue gas and a hermetic member 400 for holding the guide rail 200, And a plurality of hydraulic cylinders 500 installed between the plurality of discs 300 to seal both sides of the gas pipe 1 in which the disc 300 is moved and the flue gas is moved.

The body 100 is formed in a square pillar shape, and the body shafts 110 are installed by welding in a state where the body shafts 110 are separated from each other at regular intervals, And a coupling pipe 120 formed to penetrate the other side is formed and fixed to the body support 110 by welding.

In addition, the upper portion of the body 100 is provided with an upper flange 130 having a "?"

The disc 300 is disposed at one side of the coupling pipe 120 and is formed in a cylindrical shape so as to prevent the flue gas from leaking by closely contacting both sides of the gas pipe 1 through which the flue gas moves. A disc block 310 is installed at a center of a plurality of cylindrically formed discs 300 and positioned at the center of the body 100.

A center shaft 320 installed in the disk block 310 and moving the disk 300 by the hydraulic cylinder 500 or a guide shaft serving as a guide when returning to the initial state is installed. The center axis 320 is longer than the length of the disc 300, and prevents the center axis 320 from being separated during movement.

The first guide bar 330 is coupled to the disk block 310 and horizontally installed. A second guide bar 340 is installed below the disc 300 at a position spaced apart from the first guide bar 330 by a predetermined distance. A disk guide bar 350 is installed at each end of the first guide bar 330 and the second guide bar 340.

A support bar 360 is installed in the disc block 310 in an oblique direction to a position where the first guide bar 330 and the second guide bar 340 meet to support the disc 300 while being moved without moving.

A roller 371 is installed on a lower portion of the disc 300 and a roller 370 is rotatably mounted on the roller 371 so that the disc 300 is moved along the guide rail 200 And the roller 370 and the roller lug 371 are respectively installed in the disc 300.

The hermetic member 400 is provided with a body sheet base 410 along one side of a coupling pipe 120 formed in a plurality of bodies 100 and a disk sheet base 410 corresponding to the body sheet base 410, (420) are installed along one side of the plurality of disks (300).

A coupling groove 421 is formed in the disc seat base 420 and a silicon 430 is coupled to the coupling groove 421 to increase airtightness between the body seat base 410 and the disc seat base 420. [ do.

When the disc 300 is moved and the body sheet base 410 and the disc sheet base 420 are closely contacted with each other, the silicone 430 is made of a soft material, A phenomenon in which the base 420 is spread between the base 420 and the base 420 is increased, and the sealing force is increased.

As shown in the figure, the hydraulic cylinder 500 moves the disc 300 so that the corrugated tube 2 or the other gas pipe 1 or the gas pipe 1 in which the flue gas is moved in a state in which the gas pipe 1, So that the dust collecting device 3 or the like can be maintained or repaired.

The hydraulic cylinder 500 is installed in the cylinder lugs 510 disposed on the upper and lower sides of the plurality of discs 300 so that the disc 300 is moved.

A total of thirty-two cylinder lugs (510) provided at equal intervals inside the plurality of disks (300) are installed so as to correspond to each other. Sixteen hydraulic cylinders are installed between the cylinder lugs 510 installed so as to correspond to the 32 cylinders, and the disk 300 is moved to one side of the gas pipe 1 through which the flue gas moves to seal and hermetically prevent the flue gas from leaking. .

A holder bar 600 protruding toward the upper side of the disc 300 is installed on the central shaft 320 so as to move the body 100 on which the disc 300 is installed, A ring member 610 is mounted on the holder bar 600 at an upper end thereof.

The holder bar 600 having the ring member 610 is coupled to a hook of a moving device including a hoist or a crane so that the hydraulic sealing type goggle type gate valve of the present invention can be positioned.

The present invention is not limited to the configuration in which a plurality of discs 300 are moved from the inside of the body 100 to the body 100. In this case, only one disc 300 is formed, So that the gas pipe 1 can be closed.

The present invention is not limited to the hydraulic cylinder 500 and the disk 300 may be moved by a motor (not shown) using a rack (not shown) and a pinion (not shown) to both sides of the gas pipe 1 It can be carried out by changing the configuration to seal it.

In addition, the present invention is not limited to the embodiment in which the body sheet base 410 is provided on the body 100 and the disc seat base 420 corresponding thereto is provided on the disc 300.

The disc seat base 420 provided on the disc 300 is closely and directly coupled to the gas pipe 1 and the cone 430 is mounted on the disc seat base 420, It may be constructed so as to be in close contact with the gas pipe 1.

As described above, the present invention is not limited to the above-described configuration and can be implemented in various forms since it can be used in various modifications.

The process of sealing the goggle-type gate valve of the hydraulic sealing type according to the present invention, which is constructed as described above, in a gas pipe through which the flue gas moves, will be described.

First, a hydraulic hose (not shown) provided with a manifold and a block valve (not shown) is connected to a plurality of hydraulic cylinders 500 provided between the plurality of disks 300 so that hydraulic pressure can be applied, A hydraulic pump (automatic hydraulic pump or manual hydraulic pump) is installed on one side so that pressure can be generated in the hydraulic cylinder 500. Preferably, the hydraulic hose connected to the hydraulic cylinder 500 is connected while the disc 300 is installed inside the body 100.

A bolt (not shown) and a nut (not shown) are used between the gas pipe 1 and the corrugated pipe 2 in which the flue gas moves in the state where the hydraulic hose is connected to the hydraulic cylinder 500 or not, (100).

In the state where the body 100 is installed, a flue gas generated by combustion in an incinerator (not shown) is supplied to the gas pipe 1 to cut off the gas.

In the state where the coupling pipe 120 formed in the body 100 and the gas pipe 1 are coupled to each other, the disc 300 is moved to the center of the body 100 using a moving device including a hoist or a crane. At this time, the hooks of the mobile device including the hoist or the crane are coupled to the ring member 610 of the holder bar 600 and moved.

When the disc 300 is moved to the center of the body 100, the rollers 370 disposed under the disc 300 are positioned above the guide rails 200.

When the operator applies the hydraulic pressure to the hydraulic cylinder 500 using the hydraulic pump in a state in which the disc 300 is drawn into the body 100, the hydraulic cylinder 500 installed between the discs 300, (Not shown) is pushed to one side to move the disc 300 in the direction in which the gas pipe 1 is positioned.

Not only one disc 300 is moved in the direction in which the gas pipe 1 is positioned but a plurality of discs 300 are moved in both directions around the hydraulic cylinder 500.

The disc 300 opened around the hydraulic cylinder 500 closely contacts the disc seat base 420 installed on the disc 300 on the body sheet base 410 provided on the body 100, The silicon 430 mounted on the base 420 is closely contacted to the body sheet base 410 while being closely attached thereto.

Since the silicone 430 is made of a soft material, the compression is performed, and a phenomenon that the silicone sheet 430 spreads between the body sheet base 410 and the disk sheet base 420 is enlarged, thereby increasing the sealing and airtightness.

The flue gas can not be discharged even a small amount because the flue gas is sealed up as the flue gas is moved as described above, so that the operator can arrange the other gas pipe 1, the corrugated pipe 2 or the dust collector 3, There is an advantage to be able to.

Even if there is a difference in height due to the unevenness of the guide rail 200 and the body 100, the level difference between the central axis 320 of the disc 300 and the hydraulic cylinder 500 There is an advantage that the gas pipe 1 and the disk 100 are sealed and the airtightness is maintained by the strong pressure of the hydraulic cylinder 500. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and changes may be made thereto without departing from the scope of the present invention.

100: Body 110: Body support
120: Coupling tube 130: Upper flange
200: guide rail 300: disk
310: disk block 320: center axis
330: first guide bar 340: second guide bar
350: disc guide bar 360: support bar
370: roller 371: roller lug
400: sealing member 410: body sheet base
420: disc seat base 421: engaging groove
430: Silicon 500: Hydraulic cylinder
510; Cylinder lug 600: holder bar

Claims (8)

In a hydraulic seal type goggle type gate valve,
A plurality of bodies 100 formed in a rectangular shape and spaced apart from each other and coupled to a gas pipe 1 through which a flue gas moves;
A guide rail 200 installed below the plurality of bodies 100;
A plurality of disk blocks 310 installed at the center of the plurality of disks 300 so that both sides of the gas pipe 1 to which the flue gas moves can be closely contacted and a plurality of disk blocks 310 A first guide bar 330 installed horizontally in the plurality of disk blocks 320 and a second guide bar 330 separated from the first guide bar 330 by a predetermined distance, A disk guide bar 350 installed at the side ends of the first guide bar 330 and the second guide bar 340 and a second guide bar 340 formed at a lower side of the disk block 320, A disc 300 formed of a support bar 360 installed in an oblique direction at a position where the second guide bar 340 and the disc guide bar 350 meet and being installed to be movable along the guide rail 200;
A hermetic member 400 installed on the body 100 and the disc 300 to maintain airtightness and hermeticity between the body 100 and the disc 300 to prevent leakage of the flue gas;
A plurality of hydraulic cylinders (500) installed between the plurality of discs (300) so that the disc (300) is moved along the guide rail (200) to seal both sides of the gas pipe (1)
Wherein the valve body is a valve body.
The method according to claim 1,
In the body 100,
A plurality of body shafts 110 are installed at regular intervals to make the body 100 rigid,
A goggle type gate valve of a hydraulic sealing type, wherein a coupling pipe (120) penetrating from the one side to the other side is provided at a central portion of the body support (110) and connected to a gas pipe (1) through which the flue gas moves.
delete The method according to claim 1,
In the plurality of discs 300,
A roller lug 371 is provided at the lower portion,
And a roller (370) is rotatably installed on the roller lug (371) so as to move along the guide rail (200).
The method according to claim 1,
The hermetic member (400)
A plurality of body sheet bases 410 installed along the inner periphery of the plurality of bodies 100;
A plurality of disc seat bases 420 installed along the outer periphery of the plurality of discs 300 corresponding to the body sheet base 410;
A plurality of silicon sheets 430 mounted on the plurality of disk sheet bases 420 to increase airtightness between the body sheet base 410 and the disk sheet base 420;
Wherein the gate valve is a hydraulic seal type goggle type gate valve.
The method according to claim 1,
The hydraulic cylinder (500)
Sixteen disk lugs 310 are provided between a plurality of cylinder lugs 510 arranged at regular intervals inside a plurality of disks 300 and a plurality of disk blocks 310 and a central axis 320 The disk 300 including the first guide bar 330, the second guide bar 340, the disk guide bar 350 and the plurality of support bars 360 is moved to the center axis 320 of the disk 300 And the hydraulic cylinder 500 maintains airtightness and hermeticity so that the flue gas can not be leaked irrespective of the unbalanced level within the error range of the clearance.
The method according to claim 1,
A plurality of disk blocks 310, a center shaft 320 installed in the disk block 310, and a plurality of disk blocks 310 mounted on the disk block 310 so as to be positioned in the gas pipe 1, which is caught by the hooks of the mobile device including the hoist or the crane, A first guide bar 330 installed at the block 320 and a second guide bar 340 separated at a predetermined distance from the first guide bar 330 and configured at a lower side, A disc guide bar 350 installed on the side of the guide bar 340 and a plurality of support bars 360 installed in a diagonal direction and a holder bar 600) is further formed on the outer circumferential surface of the goggle type gate valve. In a hydraulic seal type goggle type gate valve,
A plurality of disk blocks 310 constituting a body 100 having a predetermined shape and installed at the center of the body 100 so as to be movable laterally from the inside of the body 100, A first guide bar 330 installed on the disc block 320 and a second guide bar 340 spaced apart from the first guide bar 330 by a predetermined distance, A disk guide bar 350 installed at the ends of the first guide bar 330 and the second guide bar 340 and a second guide bar 340 and a disk guide bar 350 at the disk block 320, A plurality of discs 300 formed of a plurality of support bars 360 are coupled to the body 100 and the disc 300 is moved through the hydraulic cylinder 500, And the gas pipe (1) is moved so that the gas pipe (1) is kept sealed and airtight. Agent valve.

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