JP6714554B2 - Emergency release device for fluid handling equipment - Google Patents

Description

The present invention is provided, for example, when a fluid such as liquefied natural gas or liquefied petroleum gas, or a fluid such as other liquid or gas is loaded in the middle of the piping (loading arm) of the loading and unloading device to transport the loading and unloading fluid in an emergency. The present invention relates to an emergency release device for a fluid handling device that secures safety by shutting off and performing emergency release.

Conventionally, for example, when handling various fluids such as liquefied natural gas or liquefied petroleum gas between a tanker on the sea and a fluid storage facility on land, the unexpectedness of the tanker due to strong wind, storm surge, tsunami, etc. For the purpose of preventing the outflow of the fluid during transportation, such as when the fluid transportation line of the fluid handling device provided between the sea side and the land side is broken during movement or when the risk is detected, or In the event of an unexpected event such as a fire on the sea side or on the land side, in order to prevent the spread of damage to the other side, promptly shut off the fluid transfer by an emergency shutoff valve in the event of an emergency. There is used an emergency release device for a fluid handling device that separates the transport line into the sea side and the land side after the valve is closed to prevent outflow to the.

In such an emergency disconnecting device for a fluid handling device, conventionally, a pair of couplers having a fluid cutoff valve for shutting off the flow of fluid, a detachable connecting mechanism for connecting the couplers to each other in an emergency detachable state, and a coupler for each coupler are provided. A valve body operating mechanism for opening and closing each fluid cutoff valve, wherein the valve body operating mechanism is provided on a valve shaft of each fluid cutoff valve, and a pair of rotation link portions that rotate together with the valve shaft, and the rotation. It is installed between the link parts with one end releasably engaged and moves up and down by the rotation of the rotary link part, and at the time of an emergency disconnection, it is separated from one of the rotary link parts so that the couplers can be separated from each other. And a drive device for rotating the rotary link part of the link mechanism. In an emergency, the drive device of the valve body operating mechanism operates, and the drive device operates. One of the pair of erection link portions is rotated by pressing one of the pair of erection link portions by rotating one of the rotation link portions connected to each other. , After each valve shaft rotates in the valve closing direction to close the fluid cutoff valves of each coupler at the same time, the detachable connection mechanism disconnects the couplers from each other to separate the couplers from each other and to install them. There is a structure in which one end of the link part is detached from the rotary link part and urgently detached, and the fluid transfer line is divided into the sea side and the land side.

However, the above-mentioned emergency disconnecting device for a fluid handling device is configured such that each erection link portion simply hangs downward in an emergency detached state. Due to problems with the system, if the lowering of the erection link part that protrudes from the lower end of the coupler in this drooping state when it descends so as to bounce after rising and detaching, the lower side coupler and the rotating link part provided on this There is a risk that this erection link or coupler may be damaged or damaged by contact with such things.

Therefore, in order to solve the above-mentioned problem, the Applicant avoids contacting the coupler on the lower side with the erection link part in the retracted state as much as possible in the event of an emergency disengagement. Even in the event of an emergency, the erection link section has a valve body actuating mechanism configured to absorb and mitigate the impact and reduce damage and breakage of the apparatus as much as possible. Proposing a device.

The emergency release device proposed by the applicant of the present application is such that a pressing operating rod 107 (provided on both sides of an opening/closing rotating rod 106 (rotating link portion) of an opening/closing valve operating mechanism 104 (valve body operating mechanism). The erection link part) is rotatably provided so as to be tiltable, and the rotation urging mechanism 110 (the erection link retracting rotation means) that urges the pressing operation rod 107 to rotate is provided to press the pushing operation rod 107. When the tip end of the pressing lever 107 separates from the other opening/closing pivot rod 106, the pivoting biasing mechanism 110 pivots the pushing operation rod 107 into an inclined posture. The opening/closing valve actuating mechanism 104 is configured such that the upper opening/closing rotary rod 106 is tilted at the time of an emergency disengagement, and the pressing operation rod 107 and the opening/closing rotary rod 106 vertically provided from both ends thereof. On the side where the angle between and becomes an acute angle, a torsion spring 110A is provided as a rotation urging mechanism 110 at the pivotal connection portion between the base end portion of the pressing operation rod 107 and the end portion of the opening/closing rotation rod 106. The pushing operation rod 107 is configured to have an inclined posture that is opened outward from the hanging posture by the biasing force of the torsion spring 110A, and the angle between the pushing operation rod 107 and the opening/closing rotation rod 106 becomes an obtuse angle. On the side, a protrusion urging body 110B formed by a compression spring is provided as the rotation urging mechanism 110 so as to be in an inclined posture that is opened to the outside, and each of the pressing operating rods 107 is in an inclined posture. After an emergency disengagement, it becomes difficult to make contact with the disengaged lower coupler 102, and even in the event of contact, the pressing operation rod 107 retracts and rotates in the tilt direction to absorb and mitigate the impact. The damage and breakage of the device are reduced as much as possible.

That is, it is simpler and less costly to employ a torsion spring as the rotation biasing mechanism on either side, but on the side where the angle between the pressing operation rod 107 and the opening/closing rotation rod 106 is an obtuse angle. While it is necessary to further open and urge the torsion spring from the 135° state (open it further by about 20°), it is necessary to bring it to the 45° state in the operation of opening and closing the open/close valve. Since it is difficult to create a torsion spring that can be used, as described above, on the side where the angle between the pressing operating rod 107 and the opening/closing rotating rod 106 is an obtuse angle, the rotation urging mechanism 110 has a resistance. It has a configuration in which a protruding urging body 110B by a compression spring is provided.

Japanese Patent No. 6170727

However, in the opening/closing valve actuation mechanism 104 proposed by the applicant of the present invention, as shown in FIG. 8, the projecting biasing body 110B projects below the opening edge of the coupler 102 during an emergency disengagement. The detached lower coupler 102 may come into contact with the protruding biasing body 110B.

The present invention relates to an improved invention of the emergency release device which solves the above-mentioned problems in the conventional emergency release device proposed by the present applicant, and in the state of emergency release, valve element operation provided on the upper coupler. The mechanism (open/close valve actuating mechanism) avoids contact with the lower coupler as much as possible, and even if the erection link (pressing lever) contacts the lower coupler, It is an object of the present invention to provide an emergency release device for a fluid handling device, which is more excellent in shock absorbing force than the above and can further reduce damage and breakage of the device.

The gist of the present invention will be described with reference to the accompanying drawings.

A pair of couplers 2 having a fluid cutoff valve 1 for shutting off the flow of fluid, a detachable connection mechanism 3 for connecting the couplers 2 to each other in an emergency detachable manner, and an opening/closing operation of each fluid shutoff valve 1 of each coupler 2. A valve body operating mechanism 4 for rotating the valve body operating mechanism 4, and the valve body operating mechanism 4 is provided on the valve shaft 5 of each fluid cutoff valve 1 and rotates with the valve shaft 5; The coupler 2 is installed between the link portions 6 in such a manner that one end thereof is detachably engaged, and is vertically moved by the rotation of the rotary link portion 6 and is separated from one of the rotary link portions 6 when the coupler 2 is urgently separated. Link mechanism 8 including a pair of erected link portions 7 projecting downward of the link mechanism, a drive device 9 for rotating the rotary link portion 6 of the link mechanism 8, and one coupler 2 side at the time of emergency disconnection. In order to avoid contact between the separated coupler 2 of the erection link part 7 provided in the erection link part 7, the erection link retraction and rotation means for retracting and rotating the erection link part 7 at the time of an emergency disengagement to be in a retracted inclined posture. In the event of an emergency, the drive device 9 of the valve body actuating mechanism 4 is actuated, and one of the rotary link portions 6 connected to the drive device 9 is rotated to rotate the pair of erection links. One of the parts 7 pushes the other rotary link part 6 to rotate it, and by the rotation of each rotary link part 6, each valve shaft 5 rotates in the valve closing direction, and each coupler 2 is rotated. After the fluid shutoff valve 1 is closed at the same time, the attachment/detachment connection mechanism 3 releases the connection between the couplers 2 to separate the couplers 2 from each other, and the couplers 2 are urgently separated from each other. Each erection link part 7 is retracted and rotated by the erection link retracting and rotating means 10 to be in the retracted inclination posture, and after the emergency separation, the erection link part 7 is separated from the coupler 2 in which the erection link part 7 is provided. In the emergency disconnecting device for a fluid cargo handling device configured so as not to come into contact with the other coupler 2 and to be damaged, the erection link retracting and rotating means 10 causes the fluid cutoff valve 1 of the coupler 2 to be in a closed state. In this case, the first erection link part 7A located below one of the erection link parts 7 is urged to retract and rotate, and when the emergency disengagement occurs, the first erection link part 7A is retracted and rotated to retreat. The first erection link retracting/rotating means 10A in the inclined posture and the second erection link part 7B located above one of the erection link parts 7 when the fluid cutoff valve 1 of the coupler 2 is closed. When the emergency disengagement is performed by applying a retracting rotation bias to the second retracting pivot portion, the second erection link portion 7B is retracted and rotated to the retracted inclined posture. The second erection link retracting/rotating means 10B, and the first erection link retracting/rotating means 10A includes the wire 11 connected to the first erection link part 7A and the first member via the wire 11. The present invention relates to an emergency disconnecting device for a fluid handling device, which is configured by a rotation urging portion 12 that urges the erection link portion 7A to retract and rotate.

Further, one end of the first erection link part 7A is pivotally connected to the main rotation link part 6A that is connected to the drive device 9 and rotates by the operation of the drive device 9, and the other end thereof is The main rotation link 6A is removably engaged with the sub-rotation link 6B that is rotated by the pressing action of the pair of erection links 7 that moves in the vertical direction when the main rotation link 6A rotates. A wire rod connecting portion 13 to which the wire rod 11 is connected is provided at an end portion of a main rotation link portion pivotally connected to the portion 6A, and the wire rod connecting portion 13 rotates through the wire rod 11. The end portion on the side of the sub-rotation link portion, which is pulled by the urging portion 12 and is engaged with the sub-rotation link portion 6B in the case of an emergency disengagement, disengages from the sub-rotation link portion 6B and becomes a free end. 2. The emergency disengagement device for a fluid cargo handling device according to claim 1, wherein the retracting pivoting force is applied to the retracting pivoting member so that the retracting pivotal member is outwardly pivoted to the retracted inclined posture. is there.

Further, when each of the fluid cutoff valves 1 is opened, the pulling direction of the wire rod connecting portion 13 pulled by the wire rod 11 is substantially the same as the longitudinal axial direction of the main rotation link portion 6A. The present invention relates to the emergency release device for a fluid cargo handling device according to claim 2, characterized in that:

Since the present invention is configured as described above, in an emergency detached state, contact with the detached lower coupler of the erected link portion provided in the upper coupler is avoided as much as possible, and by any chance, Even if the erection link part comes into contact with the lower coupler, the retracting rotation that absorbs and alleviates impacts more smoothly than before is performed, and damage and breakage of the contact part can be further reduced. Become.

That is, conventionally, the pressing operation rod (the erection link portion in the present invention) on the side that forms an obtuse angle with the opening/closing rotation rod (the rotation link portion in the present invention) in the emergency detachment state, in other words, the emergency detachment In the state (when the open/close valve (the fluid cutoff valve in the present invention is in the closed state)), the pressing urging rod located below one of the pressing joysticks has the rotation urging mechanism (main In the invention, since the projecting urging body by the anti-compression spring is provided directly as the erection link retracting rotation means) in the vicinity of the rotation connecting portion between the pressing operation rod and the opening/closing rotation rod, an emergency disconnection state is established. At that time, the protruding biasing body is in a protruding state from the lower end of the coupler to the lower side, and the protruding portion of this protruding biasing body may come into contact with the separated lower coupler. The first erection link retracting and rotating means for retracting and rotating the first erection link portion located on the lower side at the time of emergency detachment is composed of a wire rod and a rotation urging portion, and the rotation urging portion interposes the wire rod. Since the first erection link part is configured to urge the first erection link part to retract and rotate, the rotation urging part does not have to be directly provided in the vicinity of the rotation connection part between the first erection link part and the rotation link part. Often, it can be configured to be arranged at a position where it does not come into contact with the lower coupler in the emergency disconnection state, which solves the problem of contact with the lower coupler of the conventional protruding biasing body. Become.

Further, conventionally, since the pressing operation rod is rotated by the protruding operation of the protruding biasing body, the rotation range after the emergency disengagement operation is limited by the stroke range of the protruding biasing body. However, according to the present invention, since the wire connected to the first erection link portion is bent, the wire material can be freely rotated with respect to the rotation link portion. Even when it comes in contact with the lower coupler, it can be smoothly retracted and rotated to absorb and relieve impact, and it is possible to further reduce damage and damage to the device, which is extremely practical. It will be an epoch-making emergency release device for fluid handling equipment.

It is a schematic diagram showing a fluid handling device to which this example is connected. It is an explanatory perspective view showing a valve open state of the present embodiment. It is an explanatory front view showing the valve opening state of this example. It is explanatory drawing which shows the principal part (1st installation link retracting rotation means) in FIG. It is an explanatory front view showing a valve closed state of the present embodiment. It is an explanatory front view showing the emergency detachment state of this example. FIG. 7 is an explanatory front view showing that the first erection link part further retracts and rotates outward when the lower coupler comes into contact with the first erection link part of the upper coupler in the present embodiment after the emergency disconnection. It is an explanatory front view showing a defect example of the conventional device.

A preferred embodiment of the present invention will be briefly described with reference to the drawings showing the operation of the present invention.

In an emergency, the drive device 9 of the valve body actuating mechanism 4 is actuated, and one rotary link portion 6 to which the drive device 9 is connected rotates in the valve closing direction, so that both sides of the rotary link portion 6 are connected. One (one side) erection link part 7 of the pair of erection link parts 7 hung vertically on the other presses the other rotation link part 6 to rotate in the same valve closing direction, and each rotation link part When the valve closing rotation of 6 causes the valve shafts 5 to rotate in the valve closing direction to simultaneously close the respective fluid cutoff valves 1 provided in the couplers 2, the detachable connection mechanism 3 is released. Then, the couplers 2 are disconnected from each other, and the couplers 2 are separated and urgently separated.

Further, the erection link part 7 protruding downward from the one coupler 2 separated by this emergency disengagement is retracted and rotated by the erection link retraction and rotation means 10 to be in the retracted inclination posture, whereby the erection link. The contact between the part 7 and the other coupler 2 separated from the coupler 2 provided with the erection link part 7 is avoided as much as possible.

Moreover, in the present invention, the first erection link retracting rotation means 10A for retracting and rotating the first erection link portion 7A located below the one erection link portion 7 at the time of this emergency detachment is attached to the wire rod 11 with rotation. Since the rotation urging portion 12 is configured to urge the first erection link portion 7A to retract and rotate via the wire rod 11, the rotation urging portion 12 is It does not have to be directly provided in the vicinity of the rotation connecting portion between the one-installed link portion 7A and the rotation link portion 6, and can be easily arranged in a position where it does not come into contact with the lower coupler 2 in an emergency disconnection state. The design becomes feasible, which also solves the problem of contact with the lower coupler of the conventional protruding biasing body.

In addition, after an emergency disengagement, a large vertical movement should occur on one of the couplers 2 side. Due to this vertical movement, the tip portion of the first erection link portion 7A causes the lower coupler 2 and the rotary link provided on the coupler 2 to move. The first erection link portion 7A can freely rotate with respect to the rotation link portion 6 while bending the wire rod 11 even when the first attachment link portion 7A comes into contact with or collides with the portion 6 or other peripheral objects. Therefore, by the pressing action from the contact object, the contact object is smoothly further retracted and rotated so that the impact is absorbed and relaxed. A large impact force is not transmitted to the erection link part 7A and further to the constituent parts of the other valve body actuating mechanism connected to the first erection link part 7A, and the damage or damage due to contact or collision is prevented as much as possible. You will be able to do it.

Specific embodiments of the present invention will be described with reference to the drawings.

In the present embodiment, as shown in the figure, a fluid provided in a fluid handling device X such as a loading arm for loading a fluid such as liquefied natural gas from a land-side storage tank to a storage tank on the seaside (for example, a ship such as a tanker). An emergency detaching device Y for a cargo handling device, a pair of couplers 2 having a fluid cutoff valve 1 for shutting off the flow of fluid, a detachable connecting mechanism 3 for connecting the couplers 2 to each other in an emergency detachable manner, and each coupler 2 And a valve element actuating mechanism 4 for opening and closing each fluid cutoff valve 1. In an emergency, the valve element actuating mechanism 4 is actuated to simultaneously close the fluid shutoff valve 1 of each coupler 2 and then connect and disconnect the same. The mechanism 3 disconnects the couplers 2 to separate the couplers 2 from each other, and the fluid handling device (loading arm) is urgently separated from the land side and the sea side.

Specifically, in the emergency release device Y for a fluid handling device of the present embodiment, the valve body actuating mechanism 4 is provided on the valve shaft 5 of each fluid cutoff valve 1 and rotates in a pair with the valve shaft 5. The link portion 6 is installed between the rotary link portions 6 in such a manner that one end thereof is detachably engaged, and is vertically moved by the rotation of the rotary link portions 6 and one of the rotary link portions is urgently disengaged. 6, a link mechanism 8 composed of a pair of erected link portions 7 protruding downward from the coupler 2, a drive device 9 for rotating the rotary link portion 6 of the link mechanism 8, and an emergency disconnection In order to prevent the erection link part 7 that sometimes protrudes from one coupler 2 from coming into contact with the other coupler 2 that has been separated from the coupler 2, the erection link part 7 is retracted and rotated in the emergency disengagement posture so that the retracted inclined posture The drive device 9 of the valve body actuating mechanism 4 is actuated in the event of an emergency, and one of the rotary link parts 6 to which the drive device 9 is connected is rotated. Thus, one of the pair of erection link parts 7 pushes the other rotary link part 6 to rotate it, and the rotation of each rotary link part 6 causes each valve shaft 5 to rotate in the valve closing direction. Then, the fluid shutoff valve 1 of each coupler 2 is closed at the same time, and then the attachment/detachment connection mechanism 3 releases the connection between the couplers 2 to separate each coupler 2 and urgently separates, and one of the separated couplers The erection link part 7 projecting downward from 2 is retracted and rotated by the erection link retracting and rotating means 10 to be in the retracted inclined posture, and in the emergency detached state, the erection link part 7 is the erected link part 7. Is provided so that it will not come into contact with the other coupler 2 separated from the coupler 2 provided with and not be damaged.

More specifically, the valve body actuating mechanism 4 has a structure in which a rotary link portion 6 is provided on a valve shaft 5 of a fluid cutoff valve 1 formed of a ball valve or the like so as to project on both left and right sides, that is, By rotating the ball valve or the like by 90 degrees, the valve shaft 5 as an opening/closing rotating shaft for switching from the open state in which it is in the communicating state to the closed state in which it is in the closed state is projected to the left and right with this as the center. In the installed state, a rotary link portion 6 serving as an opening/closing operation arm rod is provided. By rotating one side of the rotary link portion 6 downward, the valve shaft 5 rotates in the valve opening direction. Then, the fluid cutoff valve 1 is opened, and conversely, by rotating the opposite side downward, the valve shaft 5 is rotated in the valve closing direction to close the fluid cutoff valve 1. There is.

Further, a drive device 9 for switching and rotating the upper rotary link portion 6 between the valve opening direction and the valve closing direction is provided.

Specifically, a hydraulic cylinder device 9 is provided as the drive device 9, and the advancing/retreating rod 9A of the hydraulic cylinder device 9 is provided on one side of the upper rotary link portion 6 (hereinafter referred to as the main rotary link portion 6A). The main rotation link portion 6A is switched and rotated in the forward and reverse directions by the forward/backward movement of the forward/backward rod 9A to open/close the fluid cutoff valve 1 of the main rotation link portion 6A, that is, the upper coupler 2. It is configured to let.

Further, a erection link portion 7 is rotatably provided at both ends of the main rotation link portion 6A, and a lower end portion of the pressing operation rod 7 has a lower opening/closing rotation rod 6 ( (Hereinafter referred to as the sub-rotational link portion 6B) is detachably engaged with both ends of the sub-rotational link portion 6B. One side is pressed downward to interlock the sub-rotation link portion 6B in the same direction.

Specifically, each erection link portion 7 is configured such that the lower end portion engages with the sub-rotational link portion 6B in a concave-convex manner. In the present embodiment, the lower end portion of the erection link portion 7 has an engaging groove portion 14. Engagement convex portions 15 that are formed and are engaged with the engagement concave groove portions 14 are provided at both ends of the sub-rotational link portion 6B, and the engagement concave groove portions 14 and the engagement convex portions 15 are engaged with each other. When the main rotation link portion 6A is rotated in this state, it is pressed by one of the erection link portions 7 so that the sub-rotation link portion 6B is interlocked and rotated in the same direction.

That is, in the valve body actuating mechanism 4 of the present embodiment, the hydraulic cylinder device 9 operates in an emergency, and the main rotation link portion 6A to which the drive device 9 is connected rotates in the valve closing direction, and the main rotation is performed. The valve shaft 5 provided with the dynamic link portion 6A is rotated in the valve closing direction to close the fluid cutoff valve 1 of the upper coupler 2 on the land side, and both ends of the main rotary link portion 6A are closed. The erection link part 7 provided on one side of the erection link part 7 is rotated in the valve closing direction by pressing one side of the sub-rotation link part 6B on the sea side downward by the rotation of the main rotation link part 6A. The valve shaft 5 provided with the sub-rotation link portion 6B rotates in the valve closing direction to close the fluid cutoff valve 1 of the coupler 2 on the sea side (lower side) so that the land side, The respective fluid cutoff valves 1 of the respective couplers 2 on the sea side are closed at the same time, and after the respective fluid cutoff valves 1 are closed, the connection between the couplers 2 is released by the release operation of the detachable connection mechanism 3. The couplers 2 are separated from each other, and the erected link portions 7 are separated from the sub-rotation link portions 6B to separate the land side from the sea side.

Further, the valve body actuating mechanism 4 of this embodiment is provided with a hydraulic cylinder device 9 as a drive device 9, and the hydraulic cylinder device 9 is tiltably provided on a hydraulic cylinder support portion 16 provided on the coupler 2. The advancing/retreating rod 9A is pivotally connected to one side of the main turning link portion 6A.

The detachable connecting mechanism 3 includes a connecting device that overlaps and couples a pair of vertically arranged couplers 2 by tightening, and a disconnecting drive device that presses a locking buckle portion of the connecting device to release the connection. 3A, the decoupling drive device 3A is configured to operate at the timing immediately after the fluid cutoff valve 1 of each coupler 2 is closed and the cargo handling of the fluid is shut off when an emergency condition is detected. ..

Further, in the valve body actuating mechanism 4 of the present embodiment, as described above, the erection link portion 7 projecting from the upper coupler 2 at the time of emergency disconnection is provided in the lower coupler 2 and the coupler 2 separated from this. In order to prevent contact with the slave rotation link part 6B, the erection link retracting and rotating means 10 is configured to retract and rotate the erection link part 7 in the retracted inclined posture in the case of emergency detachment.

Specifically, the base end portions of the erection link portions 7 are vertically erected at both ends of the main rotation link portion 6A so as to be tiltably rotatable, and the erection link portions 7 are tilted and urged outward (sideward). An erection link retracting rotation means 10 for urging the rotation is provided, and both the main rotation link portion 6A and the sub-rotation link portion 6B rotate in the valve closing direction to close each valve shaft 5 in an emergency. By rotating the coupler 2 in the direction, the fluid cutoff valve 1 of each coupler 2 is closed, and when the detachable coupling mechanism 3 is released and the couplers 2 are urgently detached from each other, both ends of the sub-rotation link portion 6B When the lower end of the engaged linking portion 7 is disengaged upward, each of the linking portions 7 is pivoted laterally outward by the pivoting link retracting pivoting means 10 to retract laterally from the drooping posture. It is configured to change its posture to an inclined posture.

More specifically, in the erection link retracting/rotating means 10 of the present embodiment, the hydraulic cylinder device 9 is actuated when the emergency disengagement occurs, and the fluid cutoff valve 1 of each coupler 2 is closed by the link mechanism 8. At this time, the erection link part 7 located below one of the erection link parts 7 constituting the link mechanism 8, in other words, the angle formed by the rotation link part 6 (main rotation link part 6A) in the emergency detached state ( When the emergency link is removed by applying a retracting rotation bias to the erection link section 7 (hereinafter referred to as the first erection link section 7A) whose rotation angle is an obtuse angle, the first erection link section 7A is retracted. The first erection link retracting/rotating means 10A that is moved to the retracted inclination posture, and the erection link part 7 that is also located above one of the erection link parts 7 at the time of emergency disengagement, in other words, rotates in the emergency disengagement state. A retracting rotation bias is applied to the erection link portion 7 (hereinafter referred to as the second erection link portion 7B) on the side where the angle (rotation angle) formed with the link portion 6 (main rotation link portion 6A) becomes an acute angle. The second erection link retracting/rotating means 10B is configured to retreat and rotate the second erection link portion 7B to be in a retracted inclination posture when the emergency disengagement occurs.

More specifically, the first erection link retracting/rotating means 10A of this embodiment retracts and rotates the wire rod 11 connected to the first erection link portion 7A and the first erection link portion 7A via the wire rod 11. It is composed of a rotating urging portion 12 for urging.

Specifically, the rotation urging portion 12 of this embodiment includes a compression spring 12A and a wire rod locking portion 12B that locks one end of the wire rod 11 and is biased by the compression spring 12A. It is configured to be.

Further, the rotation urging portion 12 is provided on the valve shaft 5 of the hydraulic cylinder support portion 16 that supports the hydraulic cylinder device 9 provided on the tip end side of the valve shaft 5 of the fluid cutoff valve 1 of the upper coupler 2. It is configured to be provided on the side opposite to the first erection link portion 7A sandwiching the central axis of. It should be noted that the mounting position of the rotation urging portion 12 is not limited to the above, as long as it is difficult to contact the lower coupler 2 in the emergency detached state.

In addition, the wire rod 11 of the present embodiment is configured by a flexible and deformable metal wire, one end of which is locked to the wire rod locking portion 12B provided on the above-mentioned rotation urging portion 12, and the other end of which is Is connected to the wire rod connecting portion 13 provided at the end of the first erection link portion 7A on the side of the main rotation link portion.

Specifically, the fluid handling device emergency release device Y of the present embodiment has a configuration in which an arc-shaped wire rod winding portion 17 centered on the central axis of the valve shaft 5 is provided on the hydraulic cylinder support portion 16 described above. Then, the wire rod 11 of the present embodiment is configured to be wound around and arranged along the wire rod engaging groove 17A formed in the wire rod winding portion 17 in a positioned state.

That is, the first erection link retracting and rotating means 10A of this embodiment connects the wire rod 11 to the wire rod connecting portion 13 provided at the end of the first erection link portion 7A on the side of the main rotation link portion, and connects the wire rod 11 to the wire rod 11. When the wire rod connecting portion 13, that is, the end portion of the first erection link portion 7A on the main rotation link portion side is pulled by the rotation urging portion 12 via the rotation urging force, and when the emergency disengagement occurs, The sub-rotation of the first erection link part 7A, which is the free end of the sub-rotation link part side end engaging with the sub-rotation link part 6B of the first erection link part 7A, is separated from the sub-rotation link part 6B. The end portion on the link portion side is retracted and rotated outward so that the first erected link portion 7A is in the retracted inclined posture.

Further, in the first installation link retracting and rotating means 10A of this embodiment, the wire rod 11 is the wire connecting portion 13, that is, the first installation link portion when the fluid cutoff valve 1 of each coupler 2 is in the open state. The pulling direction for pulling and urging the end portion of the main rotation link portion 7A of the main rotation link portion 7A is configured to be substantially the same as the axial direction of the main rotation link portion 6A in the longitudinal direction. That is, by making the pulling biasing direction closer to the axial direction of the longitudinal direction of the main turning link part 6A, the turning biasing force due to this pulling biasing force is less likely to be generated in the main turning linking part 6A. The main rotation link portion 6A operates to prevent the fluid cutoff valve 1 from malfunctioning.

Further, the second erection link retracting/rotating means 10B of the present embodiment is configured to employ the torsion spring 10B as in the conventional case, and is hung down after the second erection link portion 7B is separated by the biasing force of the torsion spring 10B. It is configured to have a retracted inclined posture that is opened outward from the posture.

Specifically, the torsion spring 10B is releasably abutted and engaged with the inner surface of the second erection link portion 7B, and the second erection link portion 7B is further outwardly moved than the opening bias of the torsion spring 10B. When a force is applied to open the door, the abutment engagement between the second erection link portion 7B and the torsion spring 10B is released, and the second erection link portion 7B is configured to be smoothly retracted and rotated. Has been done.

The operation and effect of this embodiment configured as described above will be described below.

In the emergency release device Y for fluid handling device of the present embodiment, at the time of emergency release, the hydraulic cylinder device 9 of the valve body operating mechanism 4 operates to operate the link mechanism 8 to which the hydraulic cylinder device 9 is connected. After the fluid cutoff valve 1 of the coupler 2 is closed at the same time, the detachable connection mechanism 3 is released, and the connection between the couplers 2 is released to perform an emergency disconnection.

Specifically, the main rotation link portion 6A is rotated in the valve closing direction (clockwise in this embodiment) by the operation of the hydraulic cylinder device 9 of the valve body operation mechanism 4, so that the main rotation link portion 6A is rotated. The first erection link portion 7A hung vertically to the right end portion of the sub-rotation link portion 6B pushes the right end portion of the sub-rotation link portion 6B to close the sub-rotation link portion 6B similarly to the main rotation link portion 6A. By turning the valve in the valve direction and closing and turning the main turning link portion 6A and the sub-turning link portion 6B, the respective valve shafts 5 provided therein are turned in the valve closing direction, and the fluid of each coupler 2 is rotated. The shutoff valve 1 is simultaneously closed.

After the fluid cutoff valve 1 of each coupler 2 is closed, the connection release driving device 3A of the attachment/detachment connection mechanism 3 is activated and the detachable connection mechanism 3 is released to disconnect the couplers 2 from each other. , The other coupler 2 moves away from the one coupler 2 and urgently leaves.

In addition, at the same time that the couplers 2 move away from each other at the time of this emergency disengagement, the first erection link portion 7A provided on the upper coupler 2 is moved by the first erection link retracting rotation means 10A. Specifically, the wire rod 11 that is pulled and urged by the rotation urging portion 12 is an outer upper corner portion of the end portion on the main rotation link portion side where the wire rod connecting portion 13 of the first erection link portion 7A is provided. Is retracted to a retracted inclined posture by the rotational bias generated by pulling and biasing the upper diagonal inward direction, and the second erection link portion 7B is moved to the second erection link retraction and rotation means 10B. Specifically, the retracting rotation of the torsion spring 10B causes the retracting and tilting posture, and the lower coupler 2 that is urgently disengaged and the sub-rotating link portion 6B provided on the coupler 2 are thereby retracted. It becomes difficult to come into contact with such objects.

Further, in this emergency detached state, conventionally, the projecting biasing body 110B projects below the opening edge of the coupler 102. Therefore, after the emergency detachment, the lower coupler 102 and the projecting biasing body 110B that have been detached are separated from each other. Although there is a possibility that they may come into contact with each other, the emergency disengagement device Y for the fluid handling device of the present embodiment corresponds to the protruding urging body 110B and the first erection link retracting rotating means 10A (the wire 11 and the rotating urging force). Since the portion 12) does not project downward from the coupler 2, the above problem can be solved.

Furthermore, after an emergency release, by any chance, a bounce will occur on one of the coupler sides, and the first erection link part 7A and the second erection link part 7B will cause the lower coupler 2 and the sub-rotation link part provided on the lower erection link part 7A. Even if the first erection link part 7A contacts or collides with 6B or other peripheral objects, the first erection link part 7A can freely rotate with respect to the main rotation link part 6A while bending the wire rod 11. The second erection link portion 7B is also configured to be released from the contact engagement with the torsion spring 10B and can be freely rotated with respect to the main rotation link portion 6A. By the pressing action from the contact object, the contact object can be smoothly further retracted and rotated so as to slide, and the impact can be absorbed and alleviated. As a result, a large impact is exerted on the contact object and the erection link part 7. The force is not transmitted, and damage or damage due to contact or collision is prevented as much as possible.

It should be noted that the present invention is not limited to this embodiment, and the specific constitution of each constituent element can be designed as appropriate.

1 Fluid Cutoff Valve 2 Coupler 3 Detachable Coupling Mechanism 4 Valve Disc Actuating Mechanism 5 Valve Shaft 6 Rotating Link 6A Main Rotating Link 6B Secondary Rotating Link 7 Construction Link 7A First Construction Link 7B Second Construction Link part 8 Link mechanism 9 Drive device
10 Installation link retracting rotation means
10A First erection link retracting rotation means
10B Second erection link retracting rotation means
11 wire rod
12 Rotation urging section
13 Wire connecting part

Claims (3)

A pair of couplers having a fluid cutoff valve for shutting off the flow of fluid, a detachable connection mechanism for connecting the couplers to each other in an emergency detachable manner, and a valve body actuating mechanism for opening and closing each fluid cutoff valve of each coupler. The valve body actuating mechanism includes a pair of rotary link portions provided on the valve shafts of the respective fluid cutoff valves and rotatable with the valve shafts, and one end is detachably engaged between the rotary link parts. And a pair of erection link parts that are vertically moved by the rotation of the rotation link part and that are separated from one of the rotation link parts and project to the lower side of the coupler when an emergency disengagement occurs. In order to avoid contact between the link mechanism, the drive device that rotates the rotary link portion of the link mechanism, and the other coupler, which is separated from the erection link portion provided on the one coupler side at the time of emergency disconnection. And an erection link retracting/rotating means for revolving and pivoting the erection link portion in an urgent disengagement state so as to be in a retracted inclined posture. When one of the rotating link portions is rotated, one of the pair of erection link portions presses and rotates the other rotating link portion, and by the rotation of each of the rotating link portions, After each valve shaft rotates in the valve closing direction to simultaneously close the fluid cutoff valves of the couplers, the detachable connection mechanism disconnects the couplers from each other, and the couplers are separated and urgently separated, After the emergency disconnection, the erection link part vertically erected on the separated one coupler is retracted and rotated by the erection link retraction and rotation means to be in the retracted inclination posture. In an emergency disconnecting device for a fluid cargo handling device configured so as not to come into contact with the other coupler separated from the provided coupler and to prevent damage, the erection link retracting and rotating means includes a fluid cutoff valve of the coupler in a closed state. When this happens, a retracting bias is applied to the first erection link part located below one of the erection link parts, and when the emergency disengagement occurs, the first erection link part is retracted and rotated to evacuate and tilt. When the fluid cutoff valve of the coupler is in a closed state, a retracting rotation bias is applied to the second erection link part located above one of the erection link parts. The second erection link retracting and rotating means is configured to rotate and retract the second erection link portion when it is given and emergencyly disengaged, and the first erection link retracting and rotating means includes the first erection link retracting and rotating means. A wire connected to the erection link part and the front An emergency disengagement device for a fluid cargo handling device, comprising: a rotation urging portion configured to urge the first installation link portion to retract and rotate. One end of the first erection link part is pivotally connected to a main rotation link part that is connected to the drive device and rotates by the operation of the drive device, and the other end of the first installation link part of the main rotation link part is A main rotation unit that is detachably engaged with a sub-rotation link unit that is rotated by the pressing action of the pair of erection link units that move in the vertical direction by rotation, and that is pivotally connected to the main rotation link unit. A wire rod connecting portion to which the wire rod is connected is provided at the end portion on the side of the dynamic link portion, and the wire rod connecting portion is pulled and urged by the rotation urging portion via the wire rod and when an emergency disengagement occurs. , The end portion of the sub-rotation link portion that engages with the sub-rotation link portion separates from the sub-rotation link portion to become a free end, and retracts and pivots outward by the retracting and pivoting force by the pulling force. The emergency release device for a fluid cargo handling device according to claim 1, wherein the emergency release device is configured to have the retracted inclined posture. When each of the fluid cutoff valves is opened, the pulling direction of the wire rod connecting portion that is pulled and urged from the wire rod is configured to be substantially the same as the longitudinal axial direction of the main rotation link portion. The emergency release device for a fluid cargo handling device according to claim 2, wherein

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