KR100397811B1 - Non-power emergency blocking safe valve - Google Patents

Abstract

The present invention relates to a non-power emergency shutoff safety valve, and when the flow of the fluid exceeds the flow rate set in the valve due to the vibration caused by the earthquake of a certain size or more and the rupture of the pipe installed at the rear end of the outlet of the valve, The present invention relates to a non-power emergency shutoff safety valve capable of interrupting the flow of fluid urgently by automatically recognizing and operating in the valve itself.

The present invention sadly supports the upper end portion of the stem 301 of the spool 300 by saddle mounting the stem support 220 to guide the spool 300 and the stem 301 to the main body 100 is open top In this stem support 220, the damping force that can finely control the magnetic force of the permanent magnet mounted on the lower end of the support 202, the support 202, which exerts suction force against the spool 300 and the stem 301 The weight sheet 210 is fastened, and the sensation weight sheet 210 temporarily weakens the influence of the magnetic force on the stem 301 of the spool 300 by oscillating when it receives an external vibration such as an earthquake. A sensing unit 200 provided with a permanent magnet 203 built-in type sensing member 201 configured to block the outlet-side flow path quickly; When a vibration such as an earthquake or the like or a fluid flow of a set flow rate or more occurs, the spool 300 receives the resistance and descends to the valve seat portion 102 equipped with the O-ring to block the flow path; A ball valve 400 that opens the flow path by the manual opening and closing of the entire flow path and the return of the spool 300 operated in an emergency situation; The installation of this valve consists of a level gauge 600 so that you can easily check the installation status of the valve.

Description

Non-power emergency shutoff valve {NON-POWER EMERGENCY BLOCKING SAFE VALVE}

The present invention is a failure of the pressure regulating device to maintain the fluid pressure in the pipeline at the front end of the valve at the time of sudden drop in the outlet fluid pressure due to a large-scale earthquake or a large amount of fluid leakage due to the rupture of the pipe at the rear end of the outlet The present invention relates to a non-power emergency shutoff safety valve that reacts sensitively even when a sudden drop in fluid pressure occurs such as to shut off a flow path. In particular, the magnetic force difference of the permanent magnet 203 that suctions the spool 300 to open the flow path. It is easy to prevent the deterioration of the product due to the quality and to set the allowable flow rate of the valve, and it is related to the safety valve for the non-power emergency shutoff which focuses on improving the machining difficulty of the parts.

Non-power emergency shut-off safety valves in this field are installed on the pipeline of hazardous toxic gas, highly gaseous fuel gas or oil, which are dangerous even when a small amount of fluid leaks. For example, Japanese Patent Application No. 2000-11855. This non-power emergency shutoff safety valve is inserted into the spool chamber 101 formed at the point where the inlet and the outlet of the main body meets at a right angle, and a spool 300 is inserted to block the outlet side flow path only in an emergency.

The upper end of the stem 301 formed on the upper part of the spool 300 is loosely inserted into the stem support hole 221 assembled perpendicular to the ceiling of the spool chamber 101, and the lower end of the support 202 of the damping unit 200. Is a permanent magnet 203 that attracts the stem 301 by magnetic force and causes the spool 300 to always be directed toward the opening of the flow path. In addition, a sensing member 210 that can arbitrarily adjust the separation distance between the stem 301 and the permanent magnet 203 is provided.

In the present invention, the separation distance between the stem 301 and the permanent magnet 203 plays a very important role in the passage flow rate and the seismic response sensitivity of the valve, due to the machining precision error of each component, cumulative error occurs during assembly quality of the product This non-uniform problem occurs. In order to solve this problem, the stem 301 of the spool 300 is provided with a sensitizing sheet 210 that can arbitrarily adjust the separation distance between the stem 301 and the permanent magnet 203. Finely adjust the influence on the magnetic force of the permanent magnet 203 built into the damping unit 200 support 202, and widens the magnetic tolerance range of the permanent magnet 203 and the machining tolerance range of each machined part It is to provide a non-power emergency shutoff safety valve with a competitive edge at a low price by maximizing cost reduction effect.

In order to achieve the above object, the present invention, to secure the upper end of the stem 301 by mounting the stem support 220 in the open ceiling seat of the main body 100, the stem support 220 Tightening the sensation pendulum sheet 210 that can finely adjust the influence of the permanent magnet 203 mounted on the support 202 of the sensing unit 200 exerts a suction force against the stem 301 of the spool 300, the outlet When the stem 301 is sucked by the permanent magnet 203 on the same axis line extending upward, the spool 300 opens the internal flow path of the main body, and the damping part 200 is inclined due to the shaking due to external vibration such as an earthquake. By changing the influence of the magnetic force on the spool 300 stem 301 due to the phenomenon, the suction force of the weakened permanent magnet 203 is weaker than the weight of the spool 300 so that the spool 300 descends to the valve seat surface 102. To shut off the internal flow path and prevent the When the pressure at the outlet side drops sharply from the inlet side pressure due to a large amount of fluid leakage due to the rupture, the pressure of the fluid acting on the upper end of the spool 300 becomes greater than the suction force of the permanent magnet 203, so the spool 300 is a permanent magnet. Provided is a non-power emergency shutoff safety valve which breaks off the suction force of 203 and descends to the valve seat surface 102 to block the internal flow path.

1 is an exploded view of a non-power emergency shutoff safety valve according to the present invention;

2 is a partial cutaway front view of the assembled state,

3 is a longitudinal side view,

4 is an operation diagram when a large amount of fluid leaks due to a rupture of a valve rear end pipe, or a pressure difference occurs due to a sudden rise in supply fluid pressure;

5 is an operation diagram when an external vibration, shock due to an earthquake or the like of a certain size or more.

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

DESCRIPTION OF SYMBOLS 100 Valve body 101: Spool chamber 102: Valve seat part 200: Reduction part 201: Weight 202: Support 203: Permanent magnet 210: Sense weight seat 211: Sense weight insertion groove 220: Stem support hole 221: Stem support hole 300: Split 301: Stem 400: Ball valve 500: Perspective 600: Level gauge

In Figure 1, the safety valve is characterized in that the main body 100 having an open ceiling, the stem support 220, which is assembled therein to support the upper end of the stem 301, and fastened to the stem support 220 Influence of the magnetic force acting on the stem 301 of the spool 300 by accommodating the control sheet 210 for accommodating or adjusting the influence of the magnetic force on the stem 301 by shaking the front and rear when the vibration is received. There is this changed sensing section 200, and the upper cover 800 to stabilize the built-in state of the stem support 220.

The stem support 220 is to support the top of the stem 301 of the spool 300 from above the spool chamber 101 of the main body 100 to facilitate the operation of the spool 300, the ceiling seat 103 It has a fitting outer diameter, and forms a stem support 220 to be assembled on the ceiling seat 103 on the outer circumferential surface top, the female screw 222 for fastening the pendulum sheet 210 is formed in the abdomen, the female screw 222 Perforated stem support hole 221 in the center of the bottom so as to support the upper end of the stem 301 to be mounted from below.

The sensation pendulum sheet 210 has a strong effect of the magnetic force acting on the stem 301 in the permanent magnet 203 embedded in the lower end of the support 202 of the sensation unit 200 while supporting the sensation unit 200 built-in. Or weakly adjusted, processed into a regular hexagon that can be tightened or adjusted with a spanner on the upper end of the outer peripheral surface, the bottom of the flat to the percussion penetrating insertion groove 211 so that the declining weight (200) sitting here to maintain the standing posture ).

In addition, the lower outer circumferential surface of the sensation pendulum sheet 210 is made of a male screw to be fastened to the female screw 222 of the stem supporter 220, and is made of a nonmagnetic material so that the magnetic force acts only on the stem 301. do.

The shock absorber 200 is oscillated all-around when dangerous vibrations or shocks such as an earthquake of a certain magnitude or more are transmitted to the emergency shut-off safety valve. Thus, the permanent magnet 203 mounted to the bottom of the support 202 of the shock absorber 200 is provided. Spacing between the stem 301 and the stem 301 temporarily weakens the influence of the magnetic force on the spool 300 than the weight of the spool 300 so that the spool 300 is charged to the valve seat surface 102 by its own weight. As it descends quickly above the silicon o-ring to block the internal flow path of the main body 100, the suction force is applied to the stem 301 of the spool 300 at the lower end of the support 202 assembled at the center of the sensing unit 200. The permanent magnet 203 is purchased.

The lower end of the support 202 is flat and the radius of the lower end is slightly smaller than the radius of the pendulum insertion groove 211 to stabilize the mounting posture of the pendulum 201 and to be oscillated from side to side under vibration or shock. Even if you hit it, you can get it back.

If the lower end of the support 202 is cylindrical, it will not be able to oscillate in the damping penetrating groove 211 in all directions when subjected to an earthquake, external vibration or shock, so that a temporary weakening of the magnetic force on the stem 301 does not occur. In consideration of this point, the lower end of the support 202 has a conical shape. The lower end of the conical support 202 is narrowed upwards, so that the sensation weight 201 is easy to swing in any direction in the sensation weight insertion groove 211, so that the influence of the magnetic force on the stem 301 is temporarily affected by an earthquake or impact. By weakening to make it easy for the spool 300 to block the flow path.

Top cover 800 is the original function of protecting the sensation pendulum sheet 210 and the sensing unit 200 from dust, moisture, etc. and pressing the top edge of the stem support 220 assembled to the ceiling seat 103 Add a groove into which the silicone o-ring can be inserted to stabilize it and prevent minor leakage of fluid.

1, 2, and 3, the safety valve is assembled in the following order. First, the ball valve 400 is assembled to the lower main body 100 of the spool chamber 101. First insert the upper ball packing sheet, insert the ball cam 402 equipped with a leak-proof O-ring, insert the valve handle 403, tighten with a hexagon nut, and then insert the ball 401 inside again, and then insert the ball packing sheet. Insert the ball 401 support and the lower cover 700 for connecting the outflow pipe is coupled.

Next, insert the stem 301 integral spool 300 from the ceiling seat 103 side to stand in a correct posture and the stem support 220 is seated in the ceiling seat 103. At this time, the upper end of the stem 301 is inserted into the stem hole (221).

The stem support member 220 fastens the pendulum seat 210 to the female screw 222 and lifts the lower end of the support 202 of the shock absorber 200 into the pendulum insertion groove 211 to maintain the standing position.

Examine the opening state of the spool 300 through the sight hole 500 mounted at one point near the bottom of the spool chamber 101 of the main body 100, and whether the function of the spool 300 is normal through a test. Check it. At this time, if the spool 300 does not operate sensitively to external vibration and shock, the magnetic force of the permanent magnet 203 acting on the stem 301 is excessive, and if the spool 300 operates too sensitively, the permanent magnet (203) means that the influence is weak.

If it is determined that the magnetic force acting on the stem 301 is strong, turn the sensation pendulum sheet 210 in the direction in which the screw is loosened, thus increasing the distance between the upper end of the stem 301 and the permanent magnet 203 and acting on the stem 301. If the magnetic force is weak to adjust the internal flow path blocking function of the spool 300 by narrowing the distance between the upper end of the stem 301 and the permanent magnet 203 by further turning the sensation pendulum sheet 210 in the fastening direction.

After confirming that there is no abnormality in the function of the spool 300, the top plate cover 800 is put on the top of the main body 100 to stabilize the stem support 220.

In FIG. 4, when a large amount of fluid leakage occurs due to the rupture of the pipe after the inlet 104, the oil pressure of the outlet 701 is lowered to be different from the oil pressure of the inlet 104. At this time, the pressure acting on the upper surface of the spool 300 is greater than the suction force of the permanent magnet 203 due to the pressure difference, and thus the spool 300 is vertically lowered to the upper portion of the silicon O-ring mounted on the valve seat surface to open the flow path. Will be blocked. This state continues unless the spool 300 is returned to its original position. This is because the stem 301 of the spool 300 has already deviated from the influence range of the magnetic force of the permanent magnet 203, and the hydraulic pressure of the inlet 104 side is kept high.

In FIG. 5, when the safety valve itself is severely shaken to the side due to an earthquake or an external shock, the seismic pendulum 201 vibrates to the left and right severely. If the permanent magnet 203 is tilted in either direction, the influence of the permanent magnet 203 on the stem 301 is reduced. Even when the weakened magnetic force does not exceed the weight of the spool 300, the spool 300 immediately descends to the upper portion of the silicon O-ring mounted on the valve seat surface to block the flow path. This state continues unless the spool 300 is returned to its original position. This is because the stem 301 of the spool 300 has already deviated from the influence range of the permanent magnet 203 magnetic force.

In any case, after the flow path is cut off from the non-power emergency shutoff safety valve by the spool (300), the spool (300) is returned to prepare for the next emergency after the subsequent safety measures such as checking and repairing the duct afterwards.

As described above, the emergency shutoff safety valve of the present invention is completely opened on the ceiling of the spool chamber 101 and inserted into the stem 301 according to the fastening degree of the stem support 220 and the sensitizing seat 210 inserted therein. Since the influence of magnetic force can be finely adjusted, it can be surely and quickly shut off in an emergency, and thus an emergency safety safety valve can be provided.

In addition, the vibration damping unit 200 oscillates before facing the dangerous water level due to an earthquake or the like of a certain magnitude, causing a temporary weakening of the magnetic force on the stem 301 of the spool 300, thereby causing the outlet ( Since the flow path of the 701 is blocked, it is safe even in a natural disaster such as an earthquake.

In addition, the processing tolerance of each machined part can be kept wide, and the magnetic force tolerance range of the permanent magnet 203 can be widened, so that the utilization of each machined part or the permanent magnet 203 becomes wider, thereby minimizing the defective rate and reducing the cost. This increasing effect is provided.

Claims (6)

The damping part 200 is inserted into the main body 100 and the ceiling seat 103 with the ceiling seat 103 opened, and the influence of the magnetic force on the spool 300 is changed when it is shaken by external vibration and impact. And a permanent magnet 203 located on the same axis extending upwardly through the outlet 701, including a ball valve to allow a manual shut-off function of the pipe line and a function of opening the flow path to the home position return of the operated spool 300. The suctioned spool 300 and the stem 301 open the outlet side flow path and generate a large amount of fluid leakage due to external vibrations and shocks such as an earthquake of a certain size or more, a rupture of the main pipe at the rear end of the valve, and control the pressure of the inlet pipe. In a non-power emergency shutoff safety valve, which is designed to shut down the flow path when the spline 300 descends in the event of an emergency situation such as a sudden pressure drop due to a failure of the device, A stem supporter 220 which is seated in the ceiling seat 103 and supports the upper end of the stem 300; Safety valve for non-power emergency cutoff, characterized in that made of a sensation pendulum seat 210 to adjust the influence of the permanent magnet 203 on the spool 300 by the fastening degree of the stem support (220). delete The method of claim 1, The stem support 220, The outer diameter fits snugly into the ceiling seat 103, An upper portion of the stem supporter 220 formed on an upper circumference of the outer surface and assembled on the ceiling seat 103; Female thread 222 for fastening the pendulum sheet 210, Emergency shut off safety valve having a stem supporting hole (221) for the upper support of the spool perforated in the bottom center of the female screw (222). The method of claim 1, The pendulum sheet 210, Safety valve for non-power emergency shut off fastening to the female screw 222 of the stem support 220 in the pendulum insertion groove (211) and the outer peripheral surface. delete delete