KR101113285B1 - leakage prevention apparatus of water, gas, oil in the pipe - Google Patents

Abstract

The present invention relates to an automatic leakage shutoff valve that automatically detects leakage and damage in a pipeline, and more particularly, water, gas, oil, etc. are damaged by water pipes, gas pipes, or oil pipes due to disasters such as excavation or earthquakes. The present invention relates to a device that can be shut off by a mechanical device rather than a conventional electrical or electronic device in case of a spill and a rapid decrease in flow rate and flow rate. In particular, this device is a disaster prevention device that immediately shuts down the pipeline immediately after an accident, even before the user controls it by conventional electrical or manual operation in case of danger (ie, before an administrator recognizes an accident). will be.

In the case of leaking oil or gas due to breakage of the pipeline, the automobile shutoff device according to the present invention moves the main shaft integrally connected to the diaphragm by the force of the spring in the main body to the lower part, and the main shaft moved to the lower part as described above. This is to block the flow of the pipeline, at the same time to apply pressure to the diaphragm by oil, gas, etc. introduced into the main body from the pressure pipeline.

Accordingly, the present invention relates to an automatic leakage shutoff valve device that enables quick and reliable shutoff of a pipeline by adding a pressure of a fluid such as oil or gas that flows through a pressure pipeline to a spring force.

Automotive shut-off valve, pressure cylinder, pressure line, emergency pin, pressure spring

Description

   Leakage prevention apparatus of water, gas, oil in the pipe}

1 is a perspective view showing the overall appearance of the leakage blocking device according to the present invention.

2 is a front sectional view showing an internal appearance of a leakage blocking device.

Figure 3 is a front sectional view showing a state that the diaphragm is lowered by the spring to operate the leakage blocking device

Figure 4 is a front sectional view showing a state in which the diaphragm is finally lowered by operating the leakage blocking device.

Figure 5 is a front sectional view showing an operation to restore to the original state after the operation of the leakage blocking device

<Description of the symbols for the main parts of the drawings>

1: pipeline 2: Hurenji

3: blocking pipe

10: Leakage blocking base body 11: Upper pressure chamber

12: Lower pressure chamber 13: Emergency pin

14: Emergency fin tube 15: Support spring

16: spring 17: spring tube                 

20: diaphragm 21: pressure knob

22: thread tap 23: spring tension control plate

30: drain 31: drain cover

32: main shaft 33: safety lock clip

34: lock valve gate 35: round hole

36: bracket 37: cover

40: upper pressure line 41: lower pressure line

42: upper pressure gauge 43: lower pressure gauge

44: intermediate valve

The present invention relates to a shut-off valve that automatically detects leaks and breakage in the pipeline, more specifically, water, gas, oil, etc. are leaked due to breakage of the water pipe, gas pipe or oil pipe resulting in rapid flow rate and flow rate If there is a reduction, it relates to a device which can be shut off by a mechanical device rather than an electrical or electronic device.

In general, there are mechanical devices and electronic devices with respect to a device that shuts off when an abnormal discharge of gas, oil, and the like is released. In the case of electronic devices, it is faster than mechanical and easy to operate by users.However, in case of accidents of wiring system caused by earthquake or power failure, earthquake, etc. There are a lot of disadvantages.

Mechanically blocking the gas, oil, etc. are as follows.

There is a Korean Utility Model Publication No. 1983-0002224, `` Low Pressure Gas Leakage Breaker '' regarding the automatic shutoff of gas flow by monitoring the decrease in gas pressure when the gas leaks using a diaphragm.

However, in the present invention, the pipeline is blocked only by the pressure by the spring, and thus, a desired operation may not occur due to a weakening of tension due to not using the spring for a long time.

In addition, since the valve is operated only by the spring, it is difficult to achieve rapid shutoff.

The invention that solves the above problems in relation to using the pressure of the flowing fluid as well as the spring as the valve blocking means Korean Patent Application No. 10-2004-0027324 "Automotive for preventing large leakage of water, gas, oil, etc. in the pipeline Stage valve ".

However, the present invention has a problem in that the pressure plate does not move smoothly inside the main body because corrosion occurs between the pressure plate and the main body when the pressure plate of the pressure cylinder method is used as a pressure transmission means in the main body.

The present invention has been proposed in order to solve the problems posed in the conventional shut-off valve device as described above.

The object of the present invention is to achieve a perfect control by applying a pressure several times the existing pressure secondly apart from the primary blocking device by the spring using the upper pressure pipeline.

In addition, an object of the present invention is to use a diaphragm as a pressure transmitting means.

In order to achieve the above object, the present invention, when the pressure of the fluid flowing in the pipeline drops due to the breakage of the pipeline, the valve on the pipeline using the fluid and pressure difference acting on the spring and the diaphragm of the leakage blocking base body installed on the pipeline In general leakage blocking device using a diaphragm,

The leakage blocking main body is divided into upper and lower sides by a diaphragm, and an upper pressure chamber at an upper portion of the diaphragm and a lower pressure chamber at a lower portion of the diaphragm;

An upper pressurizing pipe line separating a part of the fluid separated from the conduit and flowing into the shutoff valve to the upper pressure chamber;

A lower pressure conduit for separating a portion of the fluid flowing out of the shutoff valve to the lower pressure chamber from the conduit;

A main shaft which is integrally connected with the diaphragm at the center while penetrating the lower end of the main body, and the lower part has a lock valve gate for blocking a pipe line;

The upper pressure chamber is attached to the diaphragm, and is configured by adding an emergency pin for passing and blocking the flow of the fluid to the upper pressure pipe in accordance with the vertical operation of the diaphragm.

Hereinafter, with reference to the accompanying drawings to be described in detail with respect to the configuration of the shut-off valve device according to the present invention.

1 is a perspective view of the present invention to block the flow of the fluid by operating the shut-off valve when the fluid flowing in the pipe (1) changes pressure due to leakage, etc. The present invention is a pressure sensing device in the pipe (1) Phosphorus leakage blocking main body 10 was positioned on the cover 37 of the blocking line 3 connected to the conduit 1 and the flange 2, and the main body 10 and the cover 37 are fixed by a bracket.

In the input portion of the fluid which is the front part of the laying cut-off body 10, an upper pressurizing pipe line 40 is formed to move a portion of the fluid to the upper pressure chamber 11 apart from the pipe line 1, and the leakage blocking base body 10 is formed. In the discharge portion of the fluid which is a rear portion of the lower pressure pipe line 41 to move a portion of the fluid to the lower pressure chamber 12, apart from the pipe line (1). In this case, the upper pressurizing pipe line 40 has an intermediate valve 44 for opening or blocking the flow of fluid on the pipe line. Although not shown in the drawing, an intermediate valve is also attached to the lower pressurizing pipe line 41 for operational convenience. You can also give

In addition, the diaphragm 20 is integrally formed at the center of the main shaft 32, and the main shaft is fitted with a spring to the protrusion if the main shaft partially protrudes above the diaphragm 20.

In addition, a lock valve gate 34 is integrally formed at the lower end of the main shaft 32.

Fig. 2 shows a front sectional view of the apparatus, which shows a case where a fluid flows while maintaining a constant pressure in a pipeline 1 normally.

The shutoff valve has a leakage blocking base 10 for detecting a pressure drop of the fluid, and the leakage blocking base 10 is divided into an upper pressure chamber 11 and a lower pressure chamber 12 by a diaphragm 20. do.

The leakage blocking main body 10 is a pressurized pipe line 40 and 41 for moving a part of the fluid from the conduit 1 to the leakage blocking main body 10, and a thread groove 10a on the upper portion of the leakage blocking main body 10. ) And a thread tap 22 which can move up and down along the thread groove 10a in the thread groove 10a.                     

In addition, the upper portion of the screw tab 22 is formed with a handle 32 for rotating the screw tab 22, the lower end of the screw tab 22 has a spring tension control plate having a larger radius than the spring (16) 23) was integrally formed.

The lower end of the tension control plate 23 is provided with a spring 16, the spring 16 is fitted on the main shaft 32 protruded integrally with the diaphragm 20 at the upper end. The spring 16 is wrapped by a tube 17 made of vinyl, and the material of the tube may be any material capable of maintaining airtightness other than vinyl. In addition, a locking valve is provided at the bottom of the main shaft 32. The gate 34 is formed.

The upper pressure chamber 11 is provided with an emergency pin 13 in addition to the spring 16.

The emergency pin 13 is formed integrally with the diaphragm 20 on the side surface of the spring 16 of the diaphragm 20, and reaches up to the upper end of the leakage blocking base body 10.

The diaphragm 20 is fixed in a horizontal plane at the center of the leakage blocking base body 10, and the method of fixing the diaphragm to the leakage blocking base body is the same as a general known method.

The emergency pin 13 has an upper portion of an arrowhead or a circular dome shape so that it can be easily fitted into the upper pressurizing pipe line 40, and the lower portion has a rod shape having a uniform width. However, the shape of the upper part of the emergency pin is not limited to the above-described one, and any shape may be used to maintain the airtightness by partially modifying the shape.

The upper part of the emergency pin 13 and abutting the upper pressure line 40 is attached to the rubber, metal, silicon, aluminum and other materials that can improve the airtightness, the periphery of the emergency pin 13 is a tube (14) Wrapped in). In addition, a support spring is disposed below the emergency pin, and the support spring 15 has a size such that the emergency pin 13 is not separated from the upper pressure line due to the small movement.

The tube 14 of the emergency pin 13 generally selects a material that is easily torn in the longitudinal direction (longitudinal direction) of the emergency pin 13 but is not easily torn in the horizontal direction, and improves the strength in the horizontal direction. For this purpose, it is also preferable to install a thin metal ring in the transverse direction.

In addition, an upper portion of the pressure chamber case 10 of the upper pressure chamber 11 has a hole formed with a projection to the outside, and the projection-shaped drain 30 has a stopper fitted to block the hole, and the lower pressure chamber 12 The lower end of the leakage blocking base body 10, which is a lower part, is connected to the lower pressure line 41.

In the lower part of the leakage blocking base 10, there is a blocking pipe 3 having a device capable of opening and closing the fluid in the pipe 1, and the blocking pipe 3 is covered by a cover 37 at its upper part. The cover 37 and the leakage blocking base 10 are connected by a bracket 36.

The blocking device in the blocking pipe path 3 has a circular hole 35 through which fluid passes, and a locking valve gate 34 as a device capable of blocking the circular hole 35.

The lock valve 34 gate is integrally formed at the lower end of the main shaft 32, and is configured to be completely sealed in close contact with the circular hole 35 in the shape of a circular plate.

However, the shape of the valve gate 34 and the circular hole 35 is not limited to the circular shape, but also rectangular or other polygons.

In addition, the upper part of the cover 37 is in contact with the main shaft 32 is provided with a fastener (32a) that is supported by a spring and can move forward and backward, the main shaft (32) Coupling groove 32b to which 32a can be coupled is dug. When the main shaft 32 is moved to the bottom, the coupling groove 32b is positioned at the position where the fasteners 33a move forward and are mutually coupled, and the main shaft 32 is disposed at the lower end of the main shaft 32. The handle hole 32c which is empty inside is penetrating through the ().

The operation of the present invention as described above is as follows.

2 is a view showing a case in which the fluid in the conduit 1 flows in a steady state without damage to the conduit 1, and FIG. 3 is a case in which the pressure in the lower pressure chamber 12 drops due to damage in the conduit 1. Figure is a pressure valve operating according to the present invention.

4 is a view showing a case in which the flow of the fluid in the conduit 1 is completely blocked because the pressure valve according to FIG. 3 is fully actuated, and FIG. 5 is an upper part to recover the original condition when the damaged conduit 1 is repaired. The figure which shows that gas, oil, and water in the pressure chamber 11 are taken out.                     

As shown in FIG. 2, the fluid in the conduit 1 flows into the conduit 1 at a constant pressure, and some of the fluid flows into the lower pressure chamber 12 through the lower pressure conduit 41. However, once the introduced fluid is filled in the lower pressure chamber 12, it is not supplied any more and only the pressure of the fluid is transmitted to the diaphragm 20.

The transmitted pressure of the lower pressure chamber 12 is in constant balance with the pressure of the fluid in the spring 16 and the upper pressure line 40 of the pressure chamber case 10, the diaphragm 20 is a constant position To keep it. In addition, the force of the fluid in the lower pressure chamber 12 is greater than the pressure of the fluid in the spring 16 and the upper pressurizing passage 40 of the upper pressure chamber 11, according to the change in the pressure in the general conduit 1 The diaphragm 20 does not move up and down.

However, if the emergency pin 13 blocking the upper pressure line 40 by the small amount of vibration or shaking in the device is moved, the fluid may accidentally flow down and the pipe may be closed even though there is no breakage of the pipe 1. In order to prevent this, first, the emergency pin 13 is in contact with the upper pressure line (40) wrapped with good airtight rubber, silicone, etc., the second around the emergency pin (13) Wrapped with a tube (14) to prevent it from flowing over a certain amount in preparation for unexpected leakage, and thirdly, the support spring (15) is installed at the bottom of the emergency pin (13) to absorb the shock against the small swing. To prevent leakage of fluid in three stages.

At this time, the handle 21 is rotated to adjust the tension of the spring 16 in the upper pressure chamber 11 to move the screw tab 22 to which the tension adjusting plate 23 is attached. Accordingly, by adjusting the tension of the spring 16 to the desired degree, the device can be operated when the pressure falls below the desired level. Here, the tension of the spring can be adjusted according to the flow rate and flow rate of the installation site during the initial design, but after installation, the user may adjust the pressure to an appropriate pressure by using a pressure gauge according to the field situation.

3 and 4 show the operation principle of the apparatus, the breakage occurs in the pipeline 1, the pressure of the fluid is lowered, thereby gradually lowering the pressure acting on the lower pressure chamber 12. . When the lowered pressure is lower than the pressure of the spring and the upper pressure line 40, which is the pressure inside the upper pressure chamber 11, the diaphragm 20 is gradually lowered. (However, in this case, the pressure of the upper pressurizing pipe line 40 has a small cross-sectional area and practically hardly affects the pressure.)

When the emergency pin 13 is separated from the upper pressure line 40 due to the lowering (the protection tube of the emergency pin 13 is torn due to the fall of the diaphragm 20), the fluid is ejected from the upper pressure line 40. The ejected fluid is applied to the diaphragm 20 a force separate from the pressure of the spring. At this time, when the ejected fluid is filled in the upper pressure line 40, the pressure of the lower pressure chamber 12 and the pressure of the upper pressure chamber 11 by the fluid is the same, and as a result, the lowering of the diaphragm 20 is pure It is lowered by the force of the spring 16. Therefore, unlike the conventional method only relying on the spring, even if the spring 16 is reduced in elasticity due to corrosion it is possible to complete sealing.

After the complete descending of the main shaft 32 occurs, the main shaft is caught by the engaging groove 32b of the clamping portion 33a of the safety blocking clip 33 attached to the cover 37 of the blocking pipe 3. It is completely fixed and thus a complete seal is realized.

5 is a view showing a process of restoring the diaphragm 20 to its original position when the damage to the pipe 1 is repaired.

First, the repairing of the broken pipe is performed in the state in which the main shaft 32 is fixed by the fastener 33a.

When the diaphragm 20 is to be returned to its original state after the restoration, the first upper pressure pipe line 40 is blocked to prevent the inflow of additional fluid and open the drain cover 31 in the upper pressure chamber 11.

When the drain cover 31 is opened, the clamp 32a is removed from the coupling groove 32b and the handle 21 is rotated to slowly remove the screw tab 22 to reduce the tension applied to the spring 16.

When the tension of the spring 16 is reduced, the diaphragm and the valve gate move upward by the restoring force of the diaphragm 20. However, when the restoring force of the diaphragm 20 is insufficient, the handle hole 32c formed at the bottom of the main rod 32c. The worker raises the main shaft 32 using the rod by inserting a rod (not shown separately).

As described above, when the fluid in the conduit flows while the valve gate 34 moves upward, pressure is generated in the lower pressure chamber 12 so that the diaphragm 20 and the valve gate 34 are raised above their original positions. do. At the same time, the fluid in the upper pressure chamber 11 exits through the drain 30.

When the fluid escapes from the upper pressure chamber 11, the drain cover 31 is closed, and the restoring operation is completed by adjusting the tension of the spring 16 to a desired state again.

Herein, the present invention may be used not only in the case of the glow valve as shown in the embodiment, but also in the gate valve for opening and closing the pipe in the same manner, and rotating about the central axis rather than the vertical movement as in the above invention. In the case of the ball valve to open and close the pipeline by using a known actuator can also be used to change the vertical motion to a rotary motion.

As described above, the shut-off valve device according to the present invention has the following effects.

First, by adding a secondary pressure device that can increase the existing pressure using the upper pressure line in addition to the primary shut-off device by the spring can achieve a rapid and sure supply of fluid.

Secondly, the tube is wrapped around the spring and emergency pin to prevent spring corrosion during long-term use, especially the tube of the emergency pin can prevent unexpected airtight damage.

Third, the diaphragm method allows smooth operation even if the metal plate is corroded.

Claims (9)

When the pressure of the fluid flowing in the pipeline drops due to breakage of the pipeline, the leakage blocking device using the diaphragm to shut off the valve on the pipeline by using the pressure and the pressure and the fluid acting on the diaphragm and the spring of the leakage blocking body installed on the pipeline. , The leakage blocking main body is divided into upper and lower sides by a diaphragm, and an upper pressure chamber at an upper portion of the diaphragm and a lower pressure chamber at a lower portion of the diaphragm; An upper pressurizing conduit for separating a portion of the fluid flowing into the shutoff valve from the conduit to the upper pressure chamber; A lower pressure conduit for separating a portion of the fluid flowing out of the shutoff valve to the lower pressure chamber from the conduit; A main shaft which is integrally connected to the diaphragm and penetrates the main body and attaches a lock valve gate to block a pipeline; It is attached to the diaphragm of the upper pressure chamber, and consists of an emergency pin for passing and blocking the flow of the fluid to the upper pressure pipe in accordance with the vertical movement of the diaphragm, When the pipeline breaks, the diaphragm and the emergency pin descend, the fluid flows into the upper pressure chamber, and the fluid flowing into the upper pressure chamber exerts a force on the diaphragm descending by the spring, thereby providing a greater descending pressure. Shut-off valve. The method of claim 1, It consists of a drain having a discharge means for discharging and blocking the fluid inside the upper pressure chamber and an opening and closing means for blocking the flow of fluid into the upper pressure chamber when the fluid discharged inside the upper pressure chamber as an intermediate valve located on the upper pressure line. Became, Closing the intermediate valve to block the flow of additional fluid to the upper pressure chamber in order to restore the pipeline shut down due to breakage of the pipeline, and then open the drain to discharge the fluid in the upper pressure chamber. The method of claim 1, The spring is a shut-off valve characterized in that the protection tube is wrapped around the spring to prevent damage caused by corrosion and foreign matters due to the fluid and air introduced into the upper pressure chamber. delete delete The method of claim 1, The emergency pin has a separate sealing device around the upper end portion that is in contact with the upper pressure pipe line to prevent the flow of fluid in the gap characterized in that the shut-off valve. The method of claim 1, The emergency pin is an automobile shut-off valve, characterized in that the air tightness is maintained even by shaking due to the impact of the shut-off valve by attaching a support spring to the contact with the diaphragm, which is the lower end. The method according to claim 1, 6 or 7. The emergency pin is a shut-off valve characterized in that it comprises a protective tube for wrapping the surrounding fluid to contain the fluid flowing out of the closed portion with the upper pressure line. The method of claim 1, When the lock valve gate to block the pipeline by operating the shut-off valve on the upper outer side of the pressure chamber, the position of the main shaft is fixed, characterized in that the fixing device is provided on the upper portion of the pressure chamber to maintain the blocking of the pipeline Car shut-off valve.

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