KR100687294B1 - Floating type apparatus preventing water leakage of butterfly valve - Google Patents

Abstract

The present invention relates to a floating type leakage blocking device of a metal seat butterfly valve, the main body seat portion 300 and the disk to block the leakage when the pipeline is closed to the valve body 100 and the disk 200 is installed in the pipeline In the leakage blocking device of the butterfly valve having a seat 400, the disk seat 400 is configured by the disk seat ring 410 is fixed to the outer peripheral surface of the disk 200, the body seat 300 is configured to be coupled to the inner circumferential surface of the valve body 100 so that the floating main body seat ring 310 can flow left and right by a predetermined clearance interval (d1). In the present invention, the valve body and the disk having a body seat portion and a disk seat portion provided in the water leakage blocking device, the disk seat portion is configured by the disk seat ring is fixed to the outer peripheral surface of the disk, the body seat portion is floating on the inner peripheral surface of the valve body Type body seating is configured to be coupled to the left and right by a certain clearance, and both cases in which the hydraulic pressure acts on the upstream and downstream sides of the pipeline block leakage, especially when the hydraulic pressure acts on the downstream side of the pipeline. The retainer and the main body seating of the floating body seat part move together according to the water pressure in the range of clearance, so that it is pressed more tightly to the disc seating of the disc seat part, so that the leak can be completely blocked even against the water pressure acting on the downstream side of the pipeline. There is an advantage.

Description

FLOATING TYPE APPARATUS PREVENTING WATER LEAKAGE OF BUTTERFLY VALVE}

1 to 3 is a view of the floating type leakage blocking device of the metal seat butterfly valve according to the present invention,

1 is a partially cutaway side view of a butterfly valve employing a floating type leakage blocking device according to the present invention.

2 and 3 are longitudinal cross-sectional view showing the configuration and operation of the floating type leakage blocking device.

<Description of Symbols for Main Parts of Drawings>

100: valve body 101: locking protrusion

102: engaging jaw 103: sheet contact surface

104: retainer insert groove 105: O-ring insert groove

200: disc 300: body sheet portion

310: main body sheeting 311,411: crimp sheet

312: screw groove 313: hydraulically actuated groove

314: bullet magazine 320: retainer

321: insertion hole 322: screw groove

323: protrusion 324: groove

330: O-ring 400: disc seat portion

410: disc seating 420: weld

500: fastening means 510: adjustment bolt

520: fixing bolt d1: clearance

d2: clearance

The present invention relates to a floating type leakage blocking device of a metal seat butterfly valve, and in particular, in both cases in which water pressure acts on the upstream side and the downstream side of the pipeline, the leakage is blocked, and when water pressure acts on the downstream side of the pipeline. The retainer and the main body seating of the floating body seat part move together with the water pressure within the allowable interval, so that it is more tightly pressed against the disc seating of the disc seat part, so that the water leaks on the downstream side of the pipeline completely leaks. It is related with the floating type leakage shutoff device of the metal seat butterfly valve which can block the

In general, the butterfly valve is installed in the inside of the valve body connected to the pipeline so that the disk is rotatable with the rotary shaft, the rotary valve is rotated by a drive device connected to the rotary shaft to open and close the pipeline. The inner circumferential surface of the valve body and the outer circumferential surface of the disk are provided with seat portions which are pressed against each other when closed.

Such a butterfly valve is difficult to expect a perfect leakage blocking by sealing only the rubber seat, in particular, the rubber seat is abrasion due to friction over time and water tight function is dramatically reduced. Therefore, the repair work such as repair or replacement of the sheet is frequent and there is an uneconomical problem that excessive management costs are expended accordingly.

In order to solve such a problem, Korean Utility Model Registration No. 20-0254812 discloses a disk assembled to both rotating shafts inside a valve body by a driving device, and a rubber sheet along an outer circumference of the disk. In the butterfly valve which is fixed to the main body seat inside the valve body, the double sealing for the butterfly valve, which is assembled to the valve main body at the rear of the main body seat, and is equipped with a metal auxiliary seat having a close contact plate having elastic force on the outer periphery. The device is known.

Such a conventional sealing device is provided with a metal sheet to assist the leakage blocking force by the rubber sheet, there is a complicated configuration, the metal sheet is installed in the rear of the valve body, the metal sheet is in close contact with the disk Since it is fixed at a predetermined position so as to contact the outer peripheral surface of the leakage preventing force by the metal sheet is difficult to maintain a stable, there was a problem that assembly production and maintenance is difficult.

Moreover, the conventional butterfly valve does not completely shut off the water leakage when water pressure is applied downstream from the pipeline, so in some cases, the purpose of the two-way leakage blocking in the piping facility where the water pressure is applied not only upstream but also downstream of the pipeline There was a problem that is not suitable for use with.

The present invention was devised to solve the above problems and defects as described above, and in both cases where the hydraulic pressure acts on the upstream and downstream sides of the pipeline, the leakage is blocked, and the hydraulic pressure acts on the downstream side of the pipeline. In this case, the retainer and the main body seating of the floating body seat part move together according to the water pressure in the range of the clearance, so that it is more tightly pressed against the disc seating of the disc seat part, so that the leak can be completely blocked even against the water pressure acting on the downstream side of the pipeline. An object of the present invention is to provide a floating leakage blocking device for a metal seat butterfly valve.

In order to achieve the above object, the floating seat leakage blocking device of the metal seat butterfly valve according to the present invention includes a valve body installed in a conduit, a disk rotatably installed to open and close the conduit therein, and the valve main body. A leakage valve blocking device of a butterfly valve having a body seat portion and a disc seat portion which are installed at an inner diameter portion of the disk and an outer diameter portion of the disk to be crimped when the pipe is closed to block leakage, wherein the disk sheet portion is disposed on an outer circumferential surface of the disk. The seat ring is fixed and configured, and the body seat part is configured to be coupled to the inner circumferential surface of the valve body such that the floating body seat ring can be moved left and right by a predetermined clearance interval.

The body seat part has the main body seat ring inserted into an inner side of the seat contact surface formed on the inner circumferential surface of the valve body on one side of the valve body, and the retainer flows to the retainer insertion groove which is formed in the recess on one side of the seat contact surface by a predetermined margin. The body seat ring and the retainer are inserted and configured to be fixed by fastening means.

The main body sheeting is formed with a hydraulically acting groove formed on one side of the upper portion, and a carbon space between the upper portions of the body sheeting is formed to be elastically opened by the hydraulic pressure. It is configured to be pressed more tightly to the fixed pressing sheet.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail as follows.

1 to 3 is a view of the floating type leakage blocking device of the metal seat butterfly valve according to the present invention, Figure 1 is a partially cutaway side view of the butterfly valve employing the floating type leakage blocking device according to the present invention 2 and 3 are longitudinal cross-sectional views showing the configuration and operation of the floating water leakage blocking device, respectively.

As shown in the figure, the disk 200 is rotatably installed to open and close the pipeline in the valve body 100 is installed in the pipeline, the inner diameter of the valve body 100 and the disk 200 In the leakage valve blocking device of the butterfly valve provided with a main body seat portion 300 and the disc seat portion 400 which is installed in the outer diameter portion and is compressed when the pipe is closed, the disc seat portion 400 is a disk ( The disc seat ring 410 is fixed to the outer circumferential surface of the 200, and the main body seat part 300 is fixed to the inner circumferential surface of the valve body 100 by the floating body seat ring 310 by a predetermined clearance gap d1. It is configured to be coupled to flow.

The clearance gap d1 is preferably about 1 mm to 2.5 mm.

The pressing sheets 311 and 411 are fixed to the main body sheeting ring 310 and the disk sheeting ring 410, respectively, and the pressing sheets 311 and 411 are subjected to secondary welding and then subjected to secondary processing. Is formed.

More specifically, the crimped sheets 311 and 411 may be used in a machined form after welding and welding Monel metal, which is a corrosion resistance excellent in strength, toughness and weldability even under a wide range of temperatures and conditions. In addition to the monel metal, a Stellite electrode, such as a Co-based alloy, may be bonded, or another material may be bonded.

The disk seat ring 410 of the disk 200 is formed in a knife-shaped cross-section gradually increasing in width from one end to the other end, the inner planar portion 412 is in contact with the outer peripheral surface of the disk 200 Both ends are welded and fixed by the welding part 420, and the pressing sheet 411 is fixed to the middle of the outer curved part 413 so as to be inclined in a form in which one side end is high and the other end is low.

The pressing sheet 311 of the body seat ring 310 is preferably fixed to be inclined so as to have the same slope as the pressing sheet 311 of the disk seat ring 410 in the middle of the upper surface of the body seat ring 310.

The body seat 300 is inserted into the body seat ring 310 into an inner side of the seat contact surface 103 formed to one side of the locking protrusion 101 of the valve body 100, and one side of the seat contact surface 103. The retainer 320 is inserted into the retainer insertion groove 104 formed in the recess so as to be movable by a predetermined clearance gap d1 to the left and right so that the main body seat ring 310 and the retainer 320 are fixed by the fastening means 500. It is made up of.

The retainer 320 is inserted into the retainer insertion groove 104 of the valve body 100 while being inserted into the retainer insertion groove 104 by separating a plurality of pieces (preferably three) into the retainer insertion groove 104, and then assembled in a circular shape. Coupling with the seat ring 310.

A pair of O-ring inserting grooves 105 are formed in the seat contact surface 103 of the valve body 100, and the O-rings 330 are respectively inserted.

The fastening means 500 forms an insertion hole 321 and a screw groove 312 in the retainer 320 and the body seat ring 310 at regular intervals, respectively, in the insertion hole 321 of the retainer 320. Fastening the adjustment bolt 510 to the screw groove 312 of the body seat ring 310, the fixing bolt 520 in the screw groove 322 formed between the insertion hole 321 in the retainer 320. By fastening the inner end portion of the fixing bolt 520 is configured to be fixed to contact with one side of the body seat ring 310.

The main seating ring 310 is formed with a hydraulically acting groove 313 on one side of the upper portion, and a tangy section 314 is formed on the upper side of the main body seating ring 310. The fixed pressing sheet 311 is configured to be pressed more closely to the pressing sheet 411 fixed to the lower surface portion of the disc seat ring 410.

The main seating ring 310 is formed with a hydraulically acting groove 313 on one side of the upper portion, and a carbon magazine 314 that is elastically opened by hydraulic pressure on the upper side thereof, and a protrusion 323 on the retainer 320. And a coupling part having a recess 324, a tip end portion of the magazine section 314 of the main body seating ring 310 is inserted into the recess 324 of the retainer 320, and a protrusion of the retainer 320. The front end portion 323 of the main body seat ring 310 is inserted into and engaged with the hydraulically acting groove 313 of the main body seat ring 310, and the recess 324 of the retainer 320 is between the bullet holes of the body seat ring 310. The upper and lower sides of the 314 are formed to have a size such that a predetermined clearance gap d2 is maintained.

The clearance gap d2 is preferably 0.3 mm to 0.7 mm.

In the floating type leakage blocking device of the metal seat butterfly valve by the floating leakage blocking device of the metal seat butterfly valve as described above, the valve 200 is installed in the pipeline and the disk 200 which is condensed on the valve body 100 is connected to the pipeline. When the disk 200 closes the conduit, when the hydraulic pressure acts on the upstream side of the conduit, that is, on the right side with reference to FIG. 2, the disk seat ring 410 having the knife-shaped cross section of the disk 200 is opened. The pressing sheet 411 is inclinedly coupled to the outer curved portion 413 in an upstream end and the downstream end in a high form, and the pressing sheet 311 of the main body seat ring 310 is a pressing sheet of the disc seat ring 410. Since it is coupled to be inclined at the same slope as 311, the pressing sheet 411 of the disc seat ring 410 is pressed tightly to the pressing sheet 311 of the body seat ring 310 is completely blocked leakage.

On the other hand, when the hydraulic pressure acts on the downstream side of the pipe, that is, on the left side with reference to FIG. 3, the retainer 320 and the main body seating ring 310 slide to the right in the range of the clearance gap d1, whereby the main body seating The pressing sheet 411 of the disc seat ring 410 is closely pressed to the pressing sheet 311 of the 310, and at this time, the protrusion 323 and the recess 324 of the retainer 320 and the main body ring 310 The clearance gap (d2) is formed above the coupling section of the carbon magazine section 314 and the hydraulic action groove 313, so that the hydraulic pressure acts on the clearance gap (d2), whereby the carbon magazine section 314 opens upwards. Since the pressing sheet 411 of the disc seat ring 410 is pressed more tightly to the pressing sheet 311 of the body seat ring 310, the leak is completely blocked.

As described above, the floating type leakage blocking device of the metal seat butterfly valve includes a valve body installed in a conduit and a disk which is openably coupled to the inside of the valve body. The seat portion is formed by fixing the disc seat ring on the outer circumferential surface of the disk, and the main body seat portion is configured by the floating body seat ring coupled to the inner circumferential surface of the valve body so as to flow left and right by a predetermined clearance interval upstream and downstream side of the pipeline. In both cases where water pressure acts at, the water leakage is blocked. Especially when water pressure acts on the downstream side of the pipe, the retainer and the body seating of the floating body seat part move together according to the water pressure within the allowable interval, Hydraulic pressure acting on the downstream side of the conduit as it is pressed more tightly to the disk seating Also it has the advantage that you can completely block the leak.

In addition, the main body seating ring is formed with a hydraulically acting groove on one side of the upper portion, a carbon section between the upper side is formed elastically by the water pressure, the upper portion of the body seating ring when the hydraulic pressure acts on the downstream side of the pipe line Since the fixed pressing sheet is configured to be pressed more tightly to the pressing sheet fixed to the lower portion of the disc seating, there is an advantage that the leak can be more completely blocked even against the hydraulic pressure acting on the downstream side of the pipe line.

The floating type leakage blocking device of the metal seat butterfly valve, which is configured in the present invention as described above, is capable of completely blocking leakage against bidirectional water pressure acting on the upstream side and the downstream side of the pipeline, and has excellent bidirectional leakage blocking force. Thus, there is an effect of improving the reliability and competitiveness of the product.

Claims (9)

The valve body 100 is installed in the pipeline, the disk 200 is rotatably installed to open and close the pipeline therein, the inner diameter portion of the valve body 100 and the outer diameter portion of the disk 200 is installed In the leakage shutoff device of the butterfly valve is provided with a main body seat portion 300 and the disc seat portion 400 to be compressed when the pipe is closed, the disc seat portion 400 of the disc 200 The disc seat ring 410 is fixed to an outer circumferential surface, and the main body seat part 300 has a floating main body seat ring 310 flowing to the inner circumferential surface of the valve body 100 by a predetermined clearance gap d1. Floating type leakage blocking device of a metal seat butterfly valve, characterized in that coupled to be configured possible. According to claim 1, The body seat 300 is the body seat ring 310 is inserted into the inner side of the seat contact surface 103 formed on one side of the locking projection 101 on the inner peripheral surface of the valve body 100 The retainer 320 is inserted into the retainer insertion groove 104 formed in one side of the sheet contact surface 103 so as to be movable by a predetermined clearance gap d1 to the left and right so that the main body seating ring 310 and the retainer 320 are moved. Floating type leakage blocking device of the metal seat butterfly valve, characterized in that the fastening means 500 is configured to be fastened. According to claim 1, wherein the body seating ring 310 is formed with a hydraulically acting groove 313 on one side of the upper side, the upper side is formed between the carbon magazine 314 elastically opened by the hydraulic pressure, the body seating ring Floating of the metal seat butterfly valve, characterized in that the pressing seat 311 fixed to the upper surface of the 310 is configured to be pressed more tightly to the pressing seat 411 fixed to the lower portion of the disk seat ring 410 Type leakage blocking device. According to claim 1, wherein the pressing sheet 311, 411 is fixed to the main body sheet ring 310 and the disk seat ring 410, respectively, the pressing sheet 311, 411 after welding Floating type leakage blocking device of a metal seat butterfly valve, characterized in that the secondary processing to form a certain shape. According to claim 1, wherein the seat contact surface 103 of the valve body 100 is formed of a pair of O-ring insertion groove 105 and the O-ring 330 is inserted into each of the metal seat butterfly valve Floating Leakage Blocker. The disk seat ring 410 of the disk 200 is formed in a knife-shaped cross-section gradually increasing in width from one end to the other end, the inner planar portion 412 is the disk 200 It is welded and fixed in contact with the outer circumferential surface of the, and the pressing sheet 411 is fixed to the middle portion of the outer curved portion 413 inclined, and the pressing sheet 311 of the body seat ring 310 is the body sheet Floating type leakage blocking device of a metal seat butterfly valve, characterized in that the inclined fixed to the middle of the upper surface of the ring (310). According to claim 2, wherein the body seating ring 310 is formed with a hydraulically acting groove 313 on one side of the upper side, the upper side is formed between the carbon magazine 314 elastically opened by the hydraulic pressure, the retainer 320 ) Is provided with a coupling portion having a protrusion 323 and the groove 324, the front end portion of the carbon section 314 of the main body seat ring 310 is inserted into the groove 324 of the retainer 320, the retainer The front end portion of the protrusion 323 of the 320 is inserted into the hydraulically acting groove 313 of the main body seat ring 310 and engaged with each other, and the recess 324 of the retainer 320 is the main body seating ring. Floating type leakage blocking device of a metal seat butterfly valve, characterized in that formed in a size that is maintained at a predetermined clearance interval (d2) to the upper, lower sides of the tanji 314 of (310). According to claim 2, The fastening means 500 is formed in the retainer 320 and the main body seat ring 310, the insertion hole 321 and the screw groove 312 at regular intervals, respectively, the retainer 320 The adjusting bolt 510 to be inserted into the insertion hole 321 of the main body seat ring 310 of the screw groove 312, and the screw groove formed between the insertion hole 321 in the retainer 320 ( 322 is fastened to the fixing bolt 520, the inner end of the fixed bolt 520 floating type leakage blocking of the metal seat butterfly valve, characterized in that configured to be in contact with one side of the body seat ring 310 Device. The method of claim 2, wherein the retainer 320 is formed by assembling and assembling a plurality of retainer insertion grooves 104 of the valve body 100, and then configured to combine with the body seat ring 310. Floating type leakage shutoff device for metal seat butterfly valve.

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