JPS6132536B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency operation valve that supplies high-pressure gas generated from a high-pressure gas generator in a container to a valve driving part when fluid pressure in piping abnormally increases or decreases. The operating mechanism includes a sliding wheel, a lock means operating shaft, an engager, a spring for urging the operating shaft, etc., and the force of the spring for urging the operating shaft pushing the sliding wheel and the upper part of the engager on the lock means operating shaft. To provide an emergency operation valve that can drive a valve part in piping at high speed and reliably by using the force of displacement, and can always accurately operate the operation valve at a predetermined pressure setting value. The purpose is to

In general, in oil supply equipment, petrochemical plants, etc., valves are opened at important points in the oil supply pipes or liquid supply pipes that communicate between towers and tanks in case of emergencies such as earthquakes and fires. Alternatively, an emergency valve is installed to close the valve. However, this type of emergency operation valve has conventionally been configured to be driven by hydraulic pressure or pneumatic pressure from an external drive source such as a hydraulic pump or air compressor, so the configuration is complex and the installation space is unnecessarily large. Additionally, it has the disadvantage that it needs to be driven more continuously than usual in case of an emergency. In addition, when the emergency operation valve is configured to detect and operate when the fluid pressure in a fluid supply pipe such as an oil supply pipe has abnormally increased or decreased, a detection unit that detects the pressure abnormality is provided. Not only is the configuration complicated, but when applied to an existing emergency operation valve, etc., the abnormal pressure detection signal of the pressure detection section is converted into another appropriate signal such as an electric signal to drive the emergency operation valve. This had the disadvantage that the equipment cost was high because it had to be supplied to the department.

The present invention includes a valve section disposed in piping, a valve drive section that is supplied with high-pressure gas in a container hermetically filled with liquefied gas and drives the valve section to open and close using the pressure, and Container opening means that accumulates force and opens the container when actuated, releases high pressure gas from the container to the outside and supplies the valve drive unit; and locks the opening means in a non-operating state against the opening force. a locking ball that contacts the locking ball and displaces the locking ball to the locked position; and a needle that contacts the locking ball and displaces the locking ball to the lock position; A sliding shaft that is displaced together with the partition wall, a sliding wheel that is slidably provided on the sliding shaft against a spring for urging the sliding wheel, and a needle that is connected to the needle and crosses the sliding shaft. a locking means actuating shaft provided therein; and a locking means actuating shaft provided on the locking means actuating shaft which forces the sliding wheel against a spring for urging the sliding wheel when the sliding shaft is displaced beyond a predetermined position by the movable bulkhead. An engaging element is provided between the container opening means and the locking means operating shaft, and when the engaging element displaces the sliding wheel to the unlocked position, the locking ball is activated. and a spring for biasing the operating shaft to displace the locking means operating shaft such that the needle is separated from the locking ball, and the locking means operating shaft is activated when the container opening means is operated. The above-mentioned drawbacks are eliminated by constructing the needle so that it is displaced to a position where it presses the locking ball to the lock position, and one embodiment thereof will be described below with reference to the drawings.

In Fig. 1, reference numeral 1 denotes an emergency operation valve, which includes a valve part 3 installed in a supply pipe 2 for, for example, oil, a valve drive part 4 that opens and closes the valve part 3, and a high-pressure gas generator inside. The gas cylinder 5 is hermetically filled with liquefied gas and is detachably attached to the valve driving section 4, and the operating section 6 has a container opening means, a locking means, and a pressure detection operating section 38 to be described later. The valve portion 3 is composed of, for example, a ball valve or a butterfly valve, and its valve shaft 3 a is connected to a rotating arm 7 of a valve drive portion 4 .

The valve drive unit 4 has a piston 9 fitted inside a cylinder 8 so as to be slidable within a predetermined range. According to the sliding displacement of the piston 9, the valve shaft 3a is moved via the rod 10 and the rotating arm 7. The valve portion 3 is rotated about its axis, and accordingly the valve portion 3 is opened or closed. Further, the sliding limit positions of the piston 9 are regulated by a pair of stopper steps 8a and 8b formed at predetermined positions on the inner wall of the cylinder 8, and the inner space of the cylinder 8 is divided into a pair of cylinder chambers 11 and 12. to be accomplished. Numerals 13a and 13b are conduits attached to the outer wall of the cylinder 8, and the cylinder chambers 11 and 12 communicate with the outside via manual valves 14a and 14b attached to the ends of the conduits, respectively.

As shown in FIG. 2, the gas cylinder 5 consists of a hollow cylindrical container 15 filled with, for example, a high-pressure gas generator and sealed with a lid 16.
It is screwed onto the lower surface of a mounting portion 17 protruding from the right end surface in the figure. Here, the high-pressure gas generator includes compressed air that is in a gaseous state when sealed in the container 5, liquefied nitrogen gas, liquefied carbon dioxide, etc. that is in a liquid state, and dry ice that is in a solid state. included. 18 is the case of the above gas cylinder 5,
Cover and protect the gas cylinder 5. Reference numeral 19 denotes a communication passage formed within the mounting portion 17, one end of which opens into the cylinder chamber 12, and the other end of which opens into the mounting location of the gas cylinder 5. Reference numeral 20 denotes a throttle resistance section, which is disposed at the opening end of the communication channel 19 to the cylinder chamber 12, and by changing the throttle resistance value, the flow path resistance of the communication channel 19 can be adjusted to an appropriate value. Ru.

Reference numeral 21 denotes an actuating part housing, which is made of a hollow cylindrical body with an inverted bottom and is attached to the upper surface of the mounting part 17 of the cylinder 8, and has a protruding part 2 formed to protrude from the inverted bottomed part.
A through hole 23 coaxially passes through the inside of 2. This through hole 23 consists of a large diameter hole 23a and a small diameter hole 23b, and has an outer periphery within the large diameter hole 23a that has the same diameter as the large diameter hole 23a, and an inner periphery that has the same diameter as the small diameter hole 23b. A ring-shaped ball receiver 24 is fitted, and the upper inner peripheral surface of the ball receiver 24 in FIG. 2 is a tapered surface 24a.

A needle 25 is composed of a large diameter flange portion 25a, a medium diameter columnar portion 25b, and a small diameter long axis columnar portion 25c. 2
Reference numeral 6 denotes a rod, which is inserted into the through hole 23 so as to be slidable in the vertical direction in FIG.
are drilled coaxially. Further, the diameters of the large diameter hole portion 27a and the small diameter hole portion 27b are very slightly larger than the outer diameters of the medium diameter columnar portion 25b and the small diameter columnar portion 25c of the needle 25, respectively. 28 is rod 2
One end is open on the outer surface of 6, and the other end is a large diameter hole 27a.
A ball 29 made of a spherical body having the same diameter as the ball hole is inserted into the ball hole. The diameter of this ball 29 is approximately equal to the thickness in the radial direction between the outer surface of the rod 26 and the small diameter hole 27b, and is therefore larger than the depth of the ball hole 28, so that it fits completely inside the ball hole 28. A part of the ball hole 28 always extends outside the ball hole 28.

Reference numeral 30 denotes a spring, which is fitted in a compressed state between a spring receiver 32 that is engaged with a flange-like stepped portion 31 provided at a predetermined position of the rod 26 and the reverse bottomed portion of the actuator housing 21. Reference numeral 33 denotes a cutter made of a long-axis columnar body, which is screwed coaxially with the lower end of the rod 26, and is inserted airtightly through the mounting portion 17, and its sharp tip is attached to the upper part of the lid 16 of the gas cylinder 5. are located a predetermined distance apart from this. 3
Reference numeral 4 denotes a communication hole that has one end open at the tip of the cutter 33 and the other end opened in the body of the cutter 33 at four locations, for example. When the cutter 33 passes through the lid 16 and moves downward, the communication hole 34 The inside of the container 15 and the communication flow path 19 communicate with each other via. Reference numeral 35 denotes a rotating arm, which is fixed to a rotating shaft 36 supported by the mounting portion 17 as shown in FIG.
7 to the vicinity of the lower end of the rod 26.

Here, the rod 26, the spring 30, the cutter 33, etc. constitute a container opening means, and the ball receiver 24 fitted in the through hole 23 of the protrusion 22, the ball 29, the ball hole 28 of the rod 26, the needle 25, etc. constitutes rod means.

Reference numeral 38 denotes a pressure detection actuating section constituting the main part of the present invention, which has a housing 39. By attaching this housing 39 to the upper part of the actuating section housing 21, the actuating section 6 is constructed. Inside the housing 39 is a sliding shaft 40.
is held movably in the left-right direction in FIG. 2 by a pair of slide bearings 41 and 42, and a verofram 45 serving as a movable bulkhead is held near the left end of the slide shaft 40 by reinforcing members 43 and 44. The peripheral edge of the bellofram 45 is fixed to the housing 39 by a cover 46 attached to the left end opening surface of the housing 39. The space defined between the cover 46 and the verofram 45 is a verofram chamber 47, and as described later, the fluid in the piping 2 on the upstream side or the downstream side (referred to as the downstream side in the following description) is connected to the pressure detection conduit 65 as described later. is supplied.

A spring receiver 48 is fixed near the right end of the sliding shaft 40, and a spring 50 for setting the operating pressure is fitted between the spring receiver 48 and the spring receiver 49 in a compressed state. The sliding shaft 40 is biased to the left in FIG. 2 by the spring 50. Reference numeral 51 denotes an adjustment screw for setting the operating pressure, which is screwed onto a cover 52 provided on the opening surface of the right end of the housing 39, and its tip abuts against the spring receiver 49. In addition, by changing the screwing length of the adjustment screw 51 into the cover 52, the biasing force of the spring 50 can be changed, and the operating pressure setting value can be variably adjusted as desired. A sliding ring 53 is fitted near the center of the sliding shaft 40 so as to be able to freely slide on the sliding shaft 40. A spring 55 for urging the sliding wheel is fitted between the sliding wheel 53 and one stopper member 54, and the sliding wheel 53 is urged to the left in FIG. 2 by this spring 55. For this reason, the sliding wheel 53 is normally held in contact with the stopper member 56. In addition, both stopper members 54, 56
are fixed to the sliding shaft 40 so as to face each other at a predetermined distance.

Reference numeral 57 denotes a locking means operating shaft, and an engaging element 59 is rotatably attached to a pin 58 that is set on the operating shaft 57. The lower end of the locking means operating shaft 57 is hollow, and the large diameter flange 25a of the needle 25 extends into the hollow portion 60. The large diameter flange 25a of this needle 25 and the hollow part 60
A spring 61 is compressed and fitted between the bottom surface of the needle 25 and the bottom surface of the needle 25, so that the needle 25 is normally biased downward in FIG.
It abuts and is locked to a stopper member 62 provided at 0.

63a is the lock means operating shaft 57 and the rod 2
6 for energizing the operating shaft compressed and fitted between the
The locking means operating shaft 57 is urged upward in FIG. 2 by a spring. 63b is the locking means operating shaft 5
A second spring for urging the operating shaft is fitted between the stepped portion near the upper end of the locking means 7 and the cover 64, and urges the locking means operating shaft 57 downward in FIG.

Here, when the pressure detection operating section 38 is in the non-operating state, that is, the state shown in FIG. 2, the first spring 63a
The biasing force of the second spring 63b is greater than that of the second spring 63b, and the locking means operating shaft 57 is
It is biased upward in FIG. 2 by a force obtained by subtracting the biasing force of the second spring 63b from the biasing force of the spring 63b.

Reference numeral 65 denotes a pressure detection conduit, one end of which is branched from the downstream side of the piping 2, and the other end is connected to the verofram chamber 47 of the pressure detection operating section 38, and the fluid on the downstream side of the piping 2 is passed through the pressure detection conduit 65. It is supplied into the bellofram chamber 47 through the air.

Next, regarding the operation of the above-mentioned component device, see Fig. 3 A and B.
will also be explained. First, adjust the screwing amount of the adjustment screw 51 of the pressure detection actuator 38 of the emergency operation valve 1,
The upper limit value of the pressure in the pipe 2 at which the operating valve 1 is to be operated, that is, the pressure setting value for the pressure detection operating section 38, is set to a desired value. When the valve section 3 is opened in this state and a fluid such as oil is supplied into the pipe 2, the pressure of the fluid supplied into the bellofram chamber 47 of the normal pressure detection operating section 38 will be higher than the above pressure setting value. Since the pressure is low, the pressure detection actuator 38 is in an inactive state.

That is, the sliding shaft 40 of the pressure detection operating section 38 is biased by the spring 50 and is at the sliding limit position on the left side in FIG. Therefore, the sliding ring 53 provided on the sliding shaft 40 is located above the engaging element 59, and the engaging element 59 is in contact with and locked with the sliding ring 53. Therefore, although the locking means actuating shaft 57 is urged upward by the force obtained by subtracting the urging force of the spring 63b from the urging force of the spring 63a, it remains in a state in which upward movement is prevented, and therefore the actuating portion 38 does not operate.

At this time, the small diameter columnar part 25c of the needle 25 is within the small diameter hole part 27b of the rod 26. One end surface of the ball 29 is connected to the medium diameter columnar part 2 of the needle 25.
5b, while the other end surface of the ball 29 extends outside the ball hole 28 and comes into contact with the tapered surface 24a of the ball receiver 24.
9 is immovably fixed within the ball hole 28. Therefore, even though the rod 26 is biased by the downward elastic force of the spring 30 in FIG. It is locked by the ball 29 that extends and comes into contact with the ball receiver 24, and is in a state where the downward displacement is regulated.

As described above, under normal conditions, the rod 26 accumulates the opening force applied to the gas cylinder 5 by the spring 30 and is locked at approximately its upper limit of movement. Therefore, the tip of the cutter 33 is held at a position a predetermined distance above the lid 16 of the gas cylinder 5, and the high-pressure gas generator inside the container 15 is closed therein. Therefore, the pressures in both cylinder chambers 11 and 12 of the valve drive unit 4 are both equal to atmospheric pressure,
The piston 9 is at its sliding limit position on the right side in FIG.
Further, at this time, the manual valve 14a is opened to an appropriate valve opening degree, while the manual valve 14b is in a fully closed state.

Now, while the valve part 3 is fully opened and fluid such as oil is being fed into the feed pipe 2 as described above, the pressure of the fluid on the downstream side of the valve part 3 has abnormally increased. do. In this case, as the pressure of the downstream fluid rises, the pressure of the fluid within the bellofram chamber 47 of the pressure detection actuation section 38 communicating with the downstream side of the valve section 3 via the pressure detection conduit 65 also rises to exceed the set pressure. As a result, the bellofram 45 receives the pressure of the fluid and is displaced to the right in FIG. 2, so that the sliding shaft 40 is displaced to the right in FIG. 2 against the force of the spring 50.

When the sliding shaft 40 is displaced to a predetermined position as shown in FIG. 3A, the sliding wheel 53 is hardly located above the engaging element 59. In this state, the horizontal component force of the spring 63a applied to the sliding wheel 53 via the engagement element 59 is larger than the urging force of the spring 55 acting on the sliding wheel 53. Therefore, before the sliding shaft 40 was displaced to the position shown in FIG. 3A, the biasing force of the spring 55 acting on the sliding wheel 53 was greater than the horizontal component of the spring 63a. , when the sliding shaft 40 is displaced to the above position, the magnitude relationship of this force is reversed, and the engager 59 is moved to the sliding wheel 5.
3, it is brought into a state in which it can be displaced upwardly together with the locking means operating shaft 57.

In this way, the reversal of the above-mentioned force relationship is caused by the sliding shaft 40
The operation of the pressure detection actuator 38 is always a constant operation because the operation is carried out at precise timing and instantaneously when the fluid is displaced to a predetermined position, that is, the position shown in FIG. 3A as the pressure of the fluid increases. It will be done at the point. Once the above force relationship is reversed, the lock means operating shaft 57 is released from the lock by the sliding wheel 53, and is displaced upward at high speed against the spring 63b by the biasing force of the spring 63a.

Here, since the large-diameter flange 25a of the needle 25 is locked to the stopper member 62, as the locking means operating shaft 57 is upwardly displaced, the operating shaft 57
and upward displacement. As a result, needle 25
The medium-diameter columnar portion 25b moves upward within the hole 27 of the rod 26 while slidingly contacting the side surface of the ball 29, and the small-diameter columnar portion 25c is loosely fitted into the large-diameter hole 27a. In this state, the ball 29 is released from the medium-diameter columnar portion 25b that had been in contact with one end surface of the ball 29, and is allowed to move within the ball hole 28 to the right in FIG. 3A. As a result, the ball 29 receives the biasing force of the spring 30 applied through the inner wall of the ball hole 28, and is slid and guided to the right until it substantially contacts the small diameter columnar portion 25c of the needle 25.

As a result, the other end surface of the ball 29 is
Since the rod 26 is separated from the tapered surface 24a of the ball 24 and pulled into the ball hole 28, the lock by the ball 29 is released. and rod 2
6 is moved downwardly at high speed within the through hole 23 of the protruding portion 22 by the elastic force of the spring 30, and instantly reaches the lower limit position where the tip end surface is abutted and locked by the stopper 17a. As a result, the cutter 33 moves downward to its lower limit position together with the rod 26 as shown in FIG. It penetrates and opens the gas cylinder 5.

As the rod 26 moves downward, the rod 26 and the locking means operating shaft 57 separate from each other, so that the elastic force of the spring 63a, which had previously biased the locking means operating shaft 57 upward, becomes small. Become. Therefore, when the rod 26 reaches the lower limit position shown in FIG.
7 is displaced downward to a position where the biasing forces of spring 63a and spring 63b are balanced, and then stopped there.

Therefore, the locking means operating shaft 57 is
When the actuated rod 26 and cutter 33 are returned to normal position due to the downward displacement of the needle 25, the needle 25 projects the ball 29 outward from the ball hole 28, and the rod 2
6 to a position where it can be pressed to lock. That is, the locking means actuating shaft 57 waits at a position where the rod 26 is locked at the position before actuation when the rod 26 is returned to its original position, as will be described later.

At this time, the engaging element 59 is separated below the sliding wheel 53, so the sliding wheel 53, which had been pushed to the right in FIG.
It is displaced and returned to the position where it abuts against the stopper member 56 due to the applied force.

As described above, when the tip of the cutter 33 penetrates the lid 16, the inside of the container 15 and the communication channel 19 communicate with each other through the communication hole 34, so that the high-pressure gas generator inside the container 15 is released to the outside. The high-pressure gas generated from the high-pressure gas generator flows through the communication hole 34 and the communication flow path 19.
It is fed into the cylinder chamber 12 via. As a result, the piston 9 receives the pressure of the high-pressure gas fed into the cylinder chamber 12, and slides at a high speed to the left sliding limit position in FIG. At the same time, the rotating arm 7 is rotated at high speed to the rotation limit position in the counterclockwise direction in FIG. 1, and the valve portion 3 is urgently closed via the valve shaft 3a. In addition, the sliding speed of the piston 9 is
It is determined by the flow rate of gas fed into the cylinder chamber 12 and the flow rate of air exhausted from the cylinder chamber 11 to the outside via the pipe line 13a. Therefore, by setting the throttle resistance value of the throttle resistance section 20 and the valve opening degree of the manual valve 14a to appropriate values, the sliding speed of the piston 9, that is, the time required for closing the valve section 3, can be set to a desired value. .

As mentioned above, when the pressure detection actuator 38 operates and the locking means operating shaft 57 moves upward, the locking means is unlocked, and the rod 26 and cutter 33, which are container opening means, move downward and the gas cylinder 5 is opened. However, in the locked state, the force acting on the needle 25 of this locking means is equal to the component of the elastic force of the spring 30 applied to the ball receiver 24 via the ball 29 in the right direction in FIG. Further, the frictional force received from the ball 29 when the medium-diameter columnar portion 25b of the needle 25 moves upward is the value obtained by multiplying the above component force by the friction coefficient between the ball 29 and the needle 25. Therefore, this frictional force is extremely small compared to the elastic force of the spring 30. Therefore, the force required to move the rod 25 upward is only about the above frictional force, and even if the force obtained by subtracting the applying force of the spring 63b from the applying force of the spring 63a is small, it is sufficient to displace the needle 25. be able to.

When opening the valve section 3 after removing the cause of the abnormal pressure increase in the upstream piping 2, first open the manual valve 14.
b is opened to exhaust the high pressure gas filling the cylinder chamber 12 to the outside via the pipe line 13b. next,
When the pressure inside the cylinder chamber 12 becomes approximately equal to atmospheric pressure, the valve shaft 3a of the valve portion 3 is forcibly rotated from the outside, and the piston 9 is slid to the right sliding limit position in FIG. The valve part 3 is opened.

Next, the rotation shaft 36, one end of which extends outside the mounting portion 17, is rotated clockwise in FIG. 2 while resisting the spring 30 using a tool such as a spanner.
As a result, the rotating arm 35 is rotated in the same direction as the rotating shaft 36, and the rod 26 slides back to its upper limit position.

At this time, the medium diameter columnar part 25b of the needle 25 contacts and presses one end surface of the ball 29 until the other end surface of the ball 29 contacts the tapered surface 24a of the ball receiver 24, as shown in FIG. move.
As a result, the ball 29 protrudes from the inside of the ball hole 28 and locking to the rod 26 is completed.

In this way, when returning the rod 26, the locking means actuating shaft 57 is waiting in a state where it can lock the rod 26, so simply displacing the rod 26 upward as described above will cause the rod 26 to return to its original position. can be locked in position.

Also, at this time, since the pressure of the fluid in the bellofram chamber 47 of the pressure detection actuating section 38 has already returned to its normal value, the sliding shaft 40 has returned to its normal displacement position together with the bellofram 45. When the elastic force of the spring 63a increases with the upward displacement of the rod 26, the lock means operating shaft 57 moves upward against the spring 63b, and the engaging element 59 abuts and locks against the sliding ring 53. upward movement is prevented at the position where the

During this return operation, if there is a timing discrepancy between the upward movement of the rod 26 and the locking means actuating shaft 57, the needle 25 will cause the ball 29 to
Although the needle 25 may receive an upward shock when it comes into contact with the needle 5b, this shock is absorbed by the spring 61, so the needle 25 will not be damaged.

Furthermore, as described above, the return operation of the pressure detection actuator 38 can be performed at once in conjunction with the return operation of the actuator 6, so the processing after the actuation is simple.

As described above, when the return operation for the operating section 6 is completed, the case 18 is then removed from the lower surface of the mounting section 17. Then, the used gas cylinder 5 is replaced with another unused cylinder, and the unused cylinder is covered again with the case 18.

Incidentally, in the above embodiment, the pressure detection actuating section 38
Although the fluid supplied to the bellofram chamber 47 is branched from the downstream side of the valve part 3, the fluid is not limited to this and may be branched from the upstream side of the valve part 3. Also, the valve part 3 can be closed in an emergency. As described above, on the other hand, it is also possible to have a configuration in which the valve is opened in an emergency.

Further, in the above embodiment, the pressure detection actuator 38 is configured to be activated when the pressure of the fluid in the pipe 2 increases beyond a certain value; however, the present invention is not limited to this. It is also possible to have a configuration in which it is activated when is below a certain value.

Further, in the above embodiment, the valve part 3 is not limited to a ball valve, a butterfly valve, etc., but may be any other valve part, such as a rotary valve, a rotary valve, etc., as long as it is driven to open and close by the valve drive part 4. .

Further, the valve driving means is not limited to a piston-cylinder mechanism, but may also be a diaphragm motor which is composed of a diaphragm membrane and a diaphragm chamber defined by the membrane and is operated by supplying gas to the diaphragm chamber. Since the valve shaft is driven in the vertical direction, it is preferable to use a globe valve, poppet valve, etc. as the valve part.

Further, the locking means is not limited to the above-mentioned structure, but any locking means may be used as long as it is activated in a trigger-like manner by the operation of the pressure detection actuation section 38 and can unlock the container opening means.

Further, the flexible membrane is not limited to a velofram, but may be a diaphragm, a piston, or the like.

Furthermore, in each of the above embodiments, the high pressure gas fed into the cylinder chamber 12 is released to the outside by opening the manual valve 14b, but the piston 9 is located on the left side in FIG. An automatic exhaust valve may be used, which detects displacement to the sliding limit position and opens the valve.

Furthermore, the second spring 63b for biasing the operating shaft is
After the pressure detection actuator 38 is actuated, the locking means actuating shaft 57 is returned to the position before actuation, so if the actuating shaft 57 is used in a position where it is slidably displaced in an approximately vertical direction, Since the operating shaft 57 can be returned to its original position by weight, the spring 63b can be omitted, and can also be omitted if a separate reset mechanism is provided.

Furthermore, the engaging element 59 is not limited to being rotatably displaceable with respect to the pin 58, but may be fixed to the locking lever operating shaft, and the shape is not limited to circular, but may also be other shapes such as trapezoidal or elliptical. It is also applicable.

As described above, in the emergency operation valve of the present invention, when the fluid pressure in the piping in which the valve portion is provided is out of a preset pressure range, the movable partition wall that receives the fluid pressure releases the sliding lock. As a result, the locking means operating shaft, which was previously prevented from being displaced, is displaced, separating the needle from the locking ball, and releasing the locking mechanism from the container opening means. The stop ball is unlocked, thereby opening the container filled with the high-pressure gas generator, and supplying the high-pressure gas generated from the high-pressure gas generator to the valve drive unit to drive the operating valve at high speed. Also, the lock release operation for the locking ball is instantaneously performed when the component force of the spring for urging the operating shaft applied to the sliding wheel via the engaging element exceeds the urging force of the spring for urging the sliding wheel. Therefore, the locking means actuating shaft can always reliably unlock the locking means at a constant operating point, and thereby the operating valve can always be reliably driven to open and close. By activating the container opening means, the needle and the locking means actuating shaft are waiting in a state where they can press the locking ball to the locked position, so that the container opening means can be easily returned to its pre-activation position simply by upward displacement. It has features such as being able to

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of the emergency operating valve according to the present invention, FIG. 2 is a vertical cross-sectional view of the main parts thereof, and FIG.
Figures A and B are partially enlarged longitudinal sectional side views showing the operating valve immediately before and after operation, respectively. 1...Emergency operation valve, 2...Feeding piping, 3...Valve section, 4...Valve drive section, 5...Gas cylinder, 6...
Actuating part, 15... Container, 24... Ball receiver, 2
5... Needle, 26... Rod, 28... Ball hole, 29... Ball, 30... Spring, 33...
Katsu, 38...Pressure detection operating part, 40...Sliding shaft, 45...Bello frame, 53...Sliding wheel, 5
4, 56...Stopper member, 55...Spring, 57
... Locking means operating shaft, 59 ... Engagement element, 63
a, 63b... Spring, 65... Pressure detection conduit.

Claims (1)

[Claims] 1 High-pressure gas is supplied to a valve part installed in the piping and a container sealed with liquefied gas inside,
A valve driving section that drives the valve to open and close using the pressure; and a container opening means that accumulates a predetermined opening force, opens the container when activated, releases high-pressure gas from the container to the outside, and supplies it to the valve driving section. a locking ball that locks the unsealing means in an inoperative state against the unsealing force; a needle that abuts the locking ball and displaces the locking ball to a locked position; and the piping that is received by the movable bulkhead. a sliding shaft that is displaced together with the movable bulkhead when the pressure therein exceeds a predetermined pressure range;
a sliding wheel provided so as to be slidable on the sliding shaft against a spring for urging the sliding wheel; a locking means operating shaft connected to the needle and provided intersecting the sliding shaft; an engager that is provided on the locking means operating shaft and that displaces the sliding wheel to a non-locking position against a sliding wheel urging spring when the sliding shaft is displaced beyond a predetermined position by the movable bulkhead; and the locking means operating shaft is provided between the container opening means and the locking means operating shaft so as to release the lock by the locking ball when the engaging element displaces the sliding wheel to the non-locking position. and a spring for biasing an operating shaft to displace the needle away from the locking ball, and the locking means operating shaft is configured such that the needle moves the locking ball to the locked position when the container opening means is actuated. An emergency operation valve characterized in that it is configured to be displaced to a position where it is pressed.