JP2023132768A - Emergency separation device for fluid cargo handling device - Google Patents

Abstract

To provide an emergency separation device for a fluid cargo handling device, having a simple constitution that can be manufactured at a low cost, capable of exhibiting an excellent emergency separation performance.SOLUTION: In the emergency separation device for the fluid cargo handling device, a valve body operation mechanism that closes each valve body 1a, 2a of each coupler 1, 2 comprises: a cylinder device 4; a rod 5 connected to the cylinder device 4; and a scotch yoke 7 engaged with the rod 5, provided on a rotation axis 9 of each valve body 1a, 2a. Furthermore, holding means 3 that holds a connected state of each coupler 1, 2 comprises: a pair of holding half bodies 3a, 3b; and an opening operation inhibiting member 8 installed between tip parts of the pair of holding half bodies 3a, 3b, which inhibits an opening operation of the pair of holding half bodies 3a, 3b.SELECTED DRAWING: Figure 1

Description

The present invention relates to an emergency release device for a fluid cargo handling device.

Fluid cargo handling equipment is used to handle various fluids such as liquefied natural gas and liquefied petroleum gas between offshore tankers and onshore storage facilities. Unexpected movement of a tanker due to transportation, etc. may cause a break in the fluid transport line between the fluid handling equipment on the sea side and on the land side, resulting in a problem where the fluid being transported leaks outside. In order to prevent the above problems from occurring, many of these fluid cargo handling devices are equipped with a system that immediately shuts off the transportation (circulation) of the fluid in an emergency to ensure that the fluid does not leak outside, and then connects the transportation line to the sea side. An emergency release device is provided on each of the land-side and sea-side transport lines to reduce the load on each of the sea-side and land-side transport lines.

By the way, regarding the above-mentioned emergency disengagement device, the present applicant has proposed an emergency disengagement device shown in Patent Document 1 (hereinafter referred to as "prior art").

As shown in FIG. 7, this conventional example includes a first coupler 21 having a first valve body 23, a second coupler 22 having a second valve body 24, and a first coupler 21 and a second coupler 22. It is equipped with a coupler connection mechanism 25 that connects in a detachable manner and a valve closing mechanism that simultaneously closes the first valve body 23 and the second valve body 24, and the valve closing mechanism is connected to the cylinder device 26 and the operation of the cylinder device 26. The valve body operating rod 27 moves forward and backward, and the valve body operating rod 27 engages with the valve body operating rod 27 and converts the forward and backward movement of the valve body operating rod 27 into a rotational motion that closes the first valve body 23 and the second valve body 24. The first valve body 23 and the second valve body 24 are closed by the operation of the valve closing mechanism in an emergency, and the first valve body 23 and the second valve body are After the valve body 24 is closed, the coupling between the first coupler 21 and the second coupler 22 is released by the release operation of the coupler coupling mechanism 25, and the first coupler 21 and the second coupler 22 are in a state where they can be separated in an emergency. The valve body operating rod 27 is configured to The first operating rod 27a and the second operating rod 27b are configured with a second operating rod 27b that is detachably connected to each other, and the first operating rod 27a and the second operating rod 27b are After the valve closing operation of the first valve body 23 and the second valve body 24 is completed, the rod connection release means 28 disconnects the first operating rod 27a and the second operating rod 27b by the rod coupling means. The first operating rod 27a and the second operating rod 27b are configured to be in a separable state when the connection between the first operating rod 27a and the second operating rod 27b is released (see FIG. 7(b)). The locking portion 29 provided on either one of the second operating rod 27a and the second operating rod 27b, the locking receiving portion 30 provided on the other, and the locking state of the locking portion 29 to the locking receiving portion 30. When the first valve body 23 and the second valve body 24 are in the open state and valve closing operation, the locked state holding part 31 holds the locking part 29 in the locked state. When the locked state to the portion 30 is maintained and the first valve body 23 and the second valve body 24 are in the closed state, the locked state holding portion 31 locks the locking portion 29 to the lock receiving portion 30. At the same time, the rod connection release means 28 releases the locking portion 29 from the locking receiver 30, and the locking state of the locking portion 29 to the locking receiver 30 is released. is released so that the first operating rod 27a and the second operating rod 27b can be separated.

Patent No. 6348924

However, in the above conventional example, the shapes of the parts constituting the valve-closing mechanism and the operating rod are complex, and the number of parts is large, so assembly work during manufacturing is complicated and costs are high. have.

The present invention is an improved invention of the conventional example described above, and provides an emergency release for a fluid cargo handling device that has a simple configuration, can be easily manufactured at low cost, and exhibits emergency release operation performance equivalent to or better than the conventional example. The purpose is to provide equipment.

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

A first coupler 1 having a first valve body 1a that blocks fluid flow; a second coupler 2 that has a second valve body 2a that blocks fluid flow and is connected to the first coupler 1; The first coupler 1 and the second coupler 2 are provided with a holding means 3 that maintains the connected state, and a valve body operating mechanism that opens and closes the first valve body 1a and the second valve body 2a. After the first valve body 1a and the second valve body 2a are brought into the closed state by the operation of the mechanism, the first coupler 1 and the second coupler 2 are maintained in the connected state by the coupler connection holding mechanism. The emergency release device for a fluid cargo handling device is configured to be released and the first coupler 1 and the second coupler 2 are separated for emergency release. A rod 5 is connected to the cylinder device 4 and moves forward and backward by the operation of the cylinder device 4, and a rod 5 is provided on the rotating shaft 9 of each of the first valve body 1a and the second valve body 2a and engages with the rod 5. The rod 5 is provided with an engaging portion 6 that engages with the Scotch yoke 7, and each of the Scotch yokes 7 has an engaging groove 7a whose other end is open. The engaging portion 6 of the rod 5 engages with the engaging groove 7a, and as the engaging portion 6 moves within the engaging groove 7a, it rotates and rotates the rotating shaft 9. The first valve body 1a and the second valve body 2a are configured to open and close in this manner, and the holding means 3 is held in a connecting portion 13 between the first coupler 1 and the second coupler 2. A pair of holding halves 3a, 3b to be attached to each other, and an opening movement prevention member 8, which is installed between the tip portions of the pair of holding halves 3a, 3b, to prevent the opening movement of the pair of holding halves 3a, 3b. When the rod 5 of the valve body operating mechanism pushes against the opening movement blocking member 8, the opening movement blocking member 8 is released, and the pair of holding halves 3a and 3b are opened. This invention relates to an emergency disconnection device for a fluid cargo handling device, characterized in that the coupler 1 and the second coupler 2 are configured to be released from the connected state.

Further, in the emergency disengagement device for a fluid cargo handling device according to claim 1, the engaging portion 6 is arranged when the first valve body 1a and the second valve body 2a are in an open state and a closed state, respectively. It is characterized by being configured to engage with the Scotch yoke 7 to suppress rotational movement of the Scotch yoke 7 and to maintain the state of the first valve body 1a and the second valve body 2a. This relates to an emergency release device for a fluid cargo handling device.

Further, in the emergency disengagement device for a fluid cargo handling device according to claim 2, the Scotch yoke 7 is formed in a substantially U-shape when viewed from the front, and each tip engages with the engaging portion 6 of the rod 5. Engagement receiving surfaces 7b and 7c are provided, and one of the engagement receiving surfaces 7b engages with the engagement portion 6 when the first valve body 1a and the second valve body 2a are in the open state, and the other engages with the engagement portion 6 when the first valve body 1a and the second valve body 2a are in the open state. The engagement receiving surface 7c is configured to engage with the engagement portion 6 when the first valve body 1a and the second valve body 2a are in a closed state. This relates to an emergency release device.

Further, in the emergency disengagement device for a fluid cargo handling device according to any one of claims 1 to 3, the rod 5 includes a first rod 5a connected to the cylinder rod 4a of the cylinder device 4, and a first rod 5a connected to the cylinder rod 4a of the cylinder device 4. A second rod 5b is separably fitted and connected to the rod 5a, and as the cylinder rod 4a moves forward, the first rod 5a moves forward, and the second rod 5b connects to the first rod 5a. The Scotch yoke 7 rotates when pushed and moved forward, and the first valve body 1a and the second valve body 2a are simultaneously brought into a closed state. This relates to an emergency release device for a fluid cargo handling device.

In the emergency release device for a fluid cargo handling device according to any one of claims 1 to 4, the opening operation blocking member 8 has a proximal end that is horizontally rotated toward a distal end of one of the holding halves 3a. The rod 5 is freely provided, and its tip portion is detachably engaged with the tip portion of the other holding half body 3b, and the rod 5 is installed between the tip portions of the pair of holding half bodies 3a and 3b. A pushing part 10 is disposed inside the opening movement blocking member 8 and pushes the opening movement blocking member 8 on the opening movement blocking member 8 side, and the pushing part 10 pushes the opening movement blocking member 8. Due to the pushing action on the blocking member 8, the tip of the opening movement blocking member 8 is detached from the other holding half 3b, and the pair of holding halves 3a, 3b are opened, whereby the holding means 3 This invention relates to an emergency disconnection device for a fluid cargo handling device, characterized in that the first coupler 1 and the second coupler 2 are configured to be released from the connected state.

Since the present invention is constructed as described above, the emergency release device for a fluid cargo handling device has a simple structure, can be easily manufactured at low cost, and exhibits emergency release operation performance equivalent to or better than that of the conventional example. becomes.

FIG. 2 is a perspective view showing this embodiment. FIG. 3 is an explanatory diagram of the operation of the valve body operating mechanism (a) and each valve body (b) of the present embodiment. FIG. 3 is an explanatory diagram of the operation of the valve body operating mechanism (a) and each valve body (b) of the present embodiment. FIG. 3 is an explanatory diagram of the operation of the valve body operating mechanism (a) and each valve body (b) of the present embodiment. FIG. 3 is an explanatory diagram of the operation of the valve body operating mechanism (a) and each valve body (b) of the present embodiment. FIG. 7 is an explanatory diagram showing the release operation of the clamp lever of the present embodiment. It is an explanatory front view showing a connected state (a) and a separated state (b) of a conventional example.

Embodiments of the present invention that are considered suitable will be briefly described by showing the effects of the present invention based on the drawings.

In the case of emergency disengagement, the cylinder device 4 is operated, and the rod 5 is moved by the operation of the cylinder device 4, and each engaging portion 6 provided on the rod 5 is connected to the rotation axis 9 of the first valve body 1a. The coupled Scotch yoke 7 and the Scotch yoke 7 coupled to the rotating shaft 9 of the second valve body 2a are respectively fitted into the engagement grooves 7a, and as the rod 5 moves, each engagement portion 6 engages with each engagement groove 7a. Each Scotch yoke 7 rotates by moving within the joint groove 7a, and the rotation of the Scotch yoke 7 causes the first valve body 1a and the second valve body 2a to close, respectively. 1a and the second valve body 2a are in the closed state, the engagement portion 6 is disengaged from the engagement groove 7a, the rotational movement of the Scotch yoke 7 is completed, and the first valve body 1a and the second valve body 2a are closed. Valve operation ends.

After the first valve body 1a and the second valve body 2a are in the closed state, the rod 5 further moves to prevent the opening operation of the holding means 3 (a pair of holding halves 3a, 3b). The blocking member 8 is pushed, and the pushing action by the rod 5 releases the opening movement blocking member 8, and the holding means 3 (a pair of holding halves 3a, 3b) is opened, and the first coupler 1 and The connection state with the second coupler 2 is released.

As described above, the present invention allows the first valve body 1a and the second valve body 2a to be smoothly closed by the operation of the single rod 5 and the Scotch yoke 7, and furthermore, The connection between the first coupler 1 and the second coupler 2 by the holding means 3 can also be released by the operation of the rod 5. It becomes a detachment device.

Specific embodiments of the present invention will be described based on the drawings.

This example describes how a fluid handling device (loading arm) used for loading and unloading various fluids such as liquefied natural gas and liquefied petroleum gas between an offshore tanker and an onshore storage facility will be protected against strong winds, high tides, tsunamis, etc. If there is a risk of breakage of the fluid transport line between the fluid handling equipment on the sea side and on the land side due to unexpected movement of the tanker, or if an unexpected situation such as a fire occurs on either the sea side or the land side. In an emergency such as when the arm (piping) is damaged, in order to prevent the arm (piping) from being damaged or the damage from spreading, immediately shut off the fluid transport (circulation) to ensure that the fluid does not leak outside, and then close the arm. This is an emergency release device installed in this fluid cargo handling equipment in order to separate the arms on the sea side and the land side, respectively, and reduce the load on the arms on the sea side and the land side. A first coupler 1 having a valve body 1a, a second coupler 2 having a second valve body 2a that blocks fluid flow and being connected to the first coupler 1, and a first coupler 1 and a second coupler 2. It is equipped with a holding means 3 that maintains the connected state, and a valve body operation mechanism that opens and closes the first valve body 1a and the second valve body 2a, and the first valve body 1a and the second valve body are opened and closed by the operation of the valve body operation mechanism. After valve 2a is closed, the coupler connection holding mechanism releases the connection between the first coupler 1 and the second coupler 2, and the first coupler 1 and second coupler 2 are separated for emergency release. It is configured to do so.

Each component of this embodiment will be described in detail below.

As shown in FIG. 1, the first coupler 1 and the second coupler 2 of this embodiment are formed in a cylindrical shape and are arranged vertically with their openings abutting each other (in this embodiment, the first coupler 1 and the second coupler 2 are The coupler 1 is on the upper side and the second coupler 2 is on the lower side), and the connected state is maintained by the holding means 3.

Further, the first coupler 1 and the second coupler 2 are provided with a positioning mechanism for positioning (centering) the butt connection position thereof.

Specifically, the positioning mechanism includes a one-side positioning part 11 provided on the first coupler 1 and having an insertion rod 11a, and an insertion hole 12a provided on the second coupler 2 through which the insertion rod 11a is inserted. By inserting the insertion rod 11a of the one-side positioning part 11 into the insertion hole 12a of the other-side positioning part 12, the first coupler 1 and the second coupler 2 are pushed out in an aligned state. configured to fit together.

Further, the holding means 3 that maintains the connected state of the first coupler 1 and the second coupler 2 is a pair of holding means 3 that is held on a connecting portion 13 where the flange portions of the first coupler 1 and the second coupler 2 are connected to each other. holding halves 3a, 3b, and an opening movement blocking member 8 which is installed between the tip ends of the pair of holding halves 3a, 3b and prevents the opening movement of the pair of holding halves 3a, 3b. The opening movement blocking member 8 is released by the rod 5 of the valve body operating mechanism, and the pair of holding halves 3a and 3b are opened, thereby releasing the connection state between the first coupler 1 and the second coupler 2. It is configured as follows.

Specifically, in this embodiment, a clamp body 3 consisting of clamp halves 3a, 3b (holding halves 3a, 3b) and a clamp lever 8 (opening movement blocking member 8) is employed as the holding means 3. .

The clamp halves 3a and 3b are horizontally rotatably provided on a clamp attachment part 14 provided on the first coupler 1, respectively, and are attached to the first coupler 1 and the second coupler 2 (first The coupler 1 is configured to move away from the connecting portion 13 of the second coupler 2.

In addition, the clamp halves 3a and 3b are formed with straight ends, which reduces the tightening force of the clamp lever 8 that tightens the first coupler 1 and the second coupler 2, and allows the clamp lever 8 to engage and disengage. It is designed to operate smoothly.

Further, the clamp halves 3a and 3b are connected to a wire rod 16 hanging down from a frame 15 on which the cylinder device 4 is provided on the distal end side, and the holding of the connected state between the first coupler 1 and the second coupler 2 is released. In this state, the distal end side is suspended from the wire rod 16, and the distal end side is configured to be restrained from hanging downward.

Further, the clamp lever 8 has a proximal end provided horizontally rotatably at the distal end of one clamp half 3a, and a distal end removably engaged with the distal end of the other clamp half 3b. In this state, it is installed between the distal ends of the clamp halves 3a and 3b, and is configured to prevent the clamp halves 3a and 3b from opening.

As mentioned above, this clamp lever 8 is configured to be released by the rod 5 of the valve body operating mechanism. Specifically, the clamp lever 8 is pushed outward by the pushing action of the rod 5, and the tip end A release operation is performed in which the clamp half body 3b is detached from the clamp half body 3b, and the blocking of the opening operation of the clamp half bodies 3a and 3b is released.

Further, the first valve body 1a provided on the first coupler 1 and the second valve body 2a provided on the second coupler 2 are each provided with a rotating shaft 9, and are rotated by the operation of a valve body operating mechanism to be described later. It is configured to open and close by rotating the shaft 9. In this embodiment, a ball valve (casting type) is used as the valve body as shown in the figure, but other types of valves such as a butterfly valve may also be used.

Further, a valve body operating mechanism that operates (operates) the first valve body 1a and the second valve body 2a includes a cylinder device 4 and a rod that is connected to this cylinder device 4 and moves forward and backward by the operation of this cylinder device 4. 5, and a Scotch yoke 7 that is provided on the rotating shaft 9 of each of the first valve body 1a and the second valve body 2a and engages with the rod 5.

Specifically, the cylinder device 4 uses a single-rod type hydraulic cylinder device in which the cylinder rod 4a moves forward and backward to one side, and the cylinder rod 4a moves upward and downward so that the direction of advancement (protrusion) of the cylinder rod 4a is downward. is arranged in the first coupler 1 of.

Further, the rod 5 is suspended and connected to the tip of the cylinder rod 4a, and is configured to move forward and backward (up and down) in conjunction with the forward and backward movement (up and down) of the cylinder rod 4a.

Specifically, the rod 5 includes a first rod 5a connected to the cylinder rod 4a, and a second rod 5b separably (detachably) fitted and connected to the first rod 5a. The first rod 5a moves forward as the rod 4a moves forward, and the second rod 5b is pushed by the first rod 5a and moves forward at the same time. The first rod 5a and the second rod 5b are configured to be automatically separated in conjunction with the detachment operation.

More specifically, in the rod 5 of this embodiment, a convex portion 17 is provided at the distal end portion of the first rod 5a (lower end portion serving as a connection portion with the second rod 5b), and a convex portion 17 is provided at the proximal end of the second rod 5b. A concave portion 18 is provided in the upper end portion (the upper end portion that is the connecting portion with the first rod 5a), and the convex portion 17 and the concave portion 18 are connected to each other so that they can be automatically separated. The rod 5 of this embodiment has a fitting retention mechanism (not shown) that maintains the concave-convex fitting between the convex portion 17 and the concave portion 18, and the first valve body 1a and the second valve body When opening and closing the first rod 5a and the second rod 5b, the first rod 5a and the second rod 5b are configured to be inseparable by this fitting and holding mechanism.

Further, the rod 5 of this embodiment is arranged close to the clamp lever 8 on the inside (on the coupler side) of the clamp lever 8 installed between the distal ends of the clamp halves 3a and 3b, and A pushing part 10 for pushing the clamp lever 8 outward is provided on the lever 8 side.

Specifically, the pushing part 10 has a sliding slope 10a, and when the rod 5 moves forward, the sliding slope 10a contacts and slides on the clamp lever 8, thereby causing the clamp lever 8 to move. It is configured to be pushed outward to release the clamp lever 8.

Further, the first rod 5a and the second rod 5b are each provided with an engaging portion 6 that engages with a Scotch yoke 7, which will be described later.

The engaging portion 6 of this embodiment is formed into a circular shape (roller shape) so that it can smoothly move (slide) within the engaging groove 7a of the Scotch yoke 7. Note that the shape of the engaging portion 6 is not limited to this embodiment.

Further, the Scotch yoke 7 with which this engaging portion 6 engages is provided with an engaging groove 7a whose other end is open, and each engaging portion 6 provided on the rod 5 engages with this engaging groove 7a. , the engaging portion 6 is configured to rotate by moving within the engaging groove 7a.

Specifically, as shown in the figure, the Scotch yoke 7 is formed into a substantially U-shape when viewed from the front, and each distal end thereof is provided with engagement receiving surfaces 7b and 7c that engage with the engagement portion 6 of the rod 5. , one engagement receiving surface 7b (in this embodiment, the upper engagement receiving surface 7b in the figure, hereinafter referred to as "upper engagement receiving surface 7b") is connected to the first valve body 1a and the second valve body 2a. engages with the engaging portion 6 in the valve open state, and the other engaging receiving surface 7c (in this embodiment, the lower engaging receiving surface 7c in the figure, hereinafter referred to as the "lower engaging receiving surface 7c") ) is configured such that the first valve body 1a and the second valve body 2a abut and engage with the engaging portion 6 in the valve closed state. In this embodiment, "abutment and engagement" includes a close engagement state in which the parts are in a close state and come into contact with each other with a slight movement.

That is, in this embodiment, when the first valve body 1a and the second valve body 2a are in the open state, the upper engagement receiving surface 7b of each Scotch yoke 7 abuts and engages with the engagement portion 6 of the rod 5. This suppresses the rotational movement of the Scotch yoke 7, maintains the first valve body 1a and the second valve body 2a in the open state, and maintains the first valve body 1a and the second valve body 2a in the closed state. , the lower engagement receiving surface 7c of each Scotch yoke 7 abuts and engages with the engaging portion 6 of the rod 5, thereby suppressing the rotational movement of the Scotch yoke 7, and thereby preventing the first valve body 1a and the second valve body 1a from rotating. It is configured to maintain the valve body 2a in a closed state.

The effects of this embodiment configured as described above will be explained based on the operational diagrams shown in FIGS. 2 to 5.

FIG. 2 shows the state (a) of the valve body operating mechanism in the valve open state of this embodiment, and the state (b) of each valve body of the first valve body 1a and the second valve body 2a.

In this valve open state, as shown in FIG. 2(a), the upper engagement receiving surface 7b of each Scotch yoke 7 abuts and engages with each engagement portion 6 provided on the rod 5. Due to the joint engagement, the rotational movement of the Scotch yoke 7 in the valve closing direction is suppressed, and the open state of the first valve body 1a and the second valve body 2a is maintained.

At the time of emergency disengagement, as shown in FIG. 3(a), the cylinder rod 4a moves forward (extension operation) by the operation of the cylinder device 4, and in conjunction with the forward movement of the cylinder rod 4a, the rod 5 moves forward. (The first rod 5a is pushed by the cylinder rod 4a, and the second rod 5b is pushed by the first rod 5a and moves downward), and each engaging portion 6 and each Scotch yoke 7 are engaged with each other on the upper side. The abutting engagement with the receiving surface 7b is released, and each Scotch yoke 7 becomes rotatable, and further forward movement of the rod 5 causes the engaging portion 6 provided on the first rod 5a to engage with the first valve body 1a. The scotch yoke 7 is fitted into the engagement groove 7a of the scotch yoke 7 provided on the rotating shaft 9 of the valve, and moved while pushing the scotch yoke 7, thereby rotating the scotch yoke 7 in the valve closing direction, and at the same time, The engaging portion 6 provided on the second rod 5b fits into the engaging groove 7a of the Scotch yoke 7 provided on the rotating shaft 9 of the second valve body 2a, and moves while pushing the Scotch yoke 7. Then, the Scotch yoke 7 rotates in the valve closing direction, and the first valve body 1a and the second valve body 2a simultaneously close the valve, as shown in FIG. 3(b).

Then, as the rod 5 moves forward in conjunction with the forward movement of the cylinder rod 4a, the first valve body 1a and the second valve body 2a become closed, as shown in FIG. 4(b). Further, when the first valve body 1a and the second valve body 2a are in the closed state, each engaging portion 6 is disengaged from the engaging groove 7a of each Scotch yoke 7, and the pushing action against the Scotch yoke 7 is released. , the valve-closing operations of the first valve body 1a and the second valve body 2a are stopped. At this time, the lower engagement receiving surface 7c of each Scotch yoke 7 abuts and engages with each engagement portion 6, and this abutting engagement suppresses the rotational movement of the Scotch yoke 7 in the valve opening direction. The closed state of the first valve body 1a and the second valve body 2a will be maintained.

After the first valve body 1a and the second valve body 2a are closed, the rod 5 (in this embodiment, the second rod 5b) moves forward in conjunction with the forward movement of the cylinder rod 4a. The sliding inclined surface 10a of the pushing part 10 provided at the is in contact with the clamp lever 8, and as the rod 5 moves forward, the sliding inclined surface 10a pushes the clamp lever 8 outward while sliding. As shown in FIG. 6, the clamp lever 8 is released by the pushing action of the sliding inclined surface 10a (pushing part 10), and each clamp half body 3a, 3b is opened as shown in FIG. 5(a). The clamp body 3 releases the connection between the first coupler 1 and the second coupler 2, and the first coupler 1 and the second coupler 2 are separated (emergency separation).

Note that the second rod 5b separated from the first rod 5a is held in its position at the time of separation by a second rod holding means (not shown), and thereby the first coupler 1 and the second coupler 2 are separated. Also, the lower engagement receiving surface 7c of each Scotch yoke 7 is in contact with and engaged with the respective engaging portion 6, and this contact and engagement causes the rotational movement of the Scotch yoke 7 in the valve opening direction. Therefore, the closed state of the first valve body 1a and the second valve body 2a is maintained.

In this way, the present embodiment has a simple configuration including one rod 5 and two Scotch yokes 7, and can be manufactured easily at low cost. 2a can be smoothly closed at the same time, and furthermore, by extending the movement of the rod 5 to close the first valve body 1a and the second valve body 2a, the clamp body 3 can be continuously closed. The connection state between the first coupler 1 and the second coupler 2 can be released, and the engagement part 6 provided on the rod 5 and the Scotch yoke 7 (upper engagement receiving surface 7b and lower engagement receiving surface 7c) ) The first valve body 1a and the second valve body 2a can be held in the open and closed states by abutting and engaging with each other, thereby providing an emergency release device for a fluid cargo handling device with excellent practicality.

Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

1 First coupler 1a First valve body 2 Second coupler 2a Second valve body 3 Holding means 3a Holding half body 3b Holding half body 4 Cylinder device 4a Cylinder rod 5 Rod 5a First rod 5b Second rod 6 Engagement portion 7 Scotch yoke 7a Engagement groove 7b One engagement receiving surface 7c Other engagement receiving surface 8 Opening operation prevention member 9 Rotating shaft
10 Pushing part
13 Connecting part

Claims (5)

a first coupler having a first valve body for blocking fluid flow; a second coupler having a second valve body for blocking fluid flow; and a second coupler connected to the first coupler; A holding means for maintaining the connection state with the two couplers, and a valve body operating mechanism for opening and closing the first valve body and the second valve body, and the first valve body and the second valve body are opened and closed by the operation of the valve body operation mechanism. After the second valve body is brought into the closed state, the connection state between the first coupler and the second coupler is released by the coupler connection and holding mechanism, and the first coupler and the second coupler are connected to each other. An emergency release device for a fluid cargo handling device configured to be separated and released in an emergency, wherein the valve body operating mechanism includes a cylinder device, and is connected to the cylinder device and moves forward and backward by the operation of the cylinder device. a rod, and a Scotch yoke provided on each rotation axis of the first valve body and the second valve body and engaged with the rod, and the rod is provided with an engaging portion that engages with the Scotch yoke. Further, each of the Scotch yokes is provided with an engagement groove whose other end is open, and the engagement portion of the rod engages with this engagement groove, and this engagement portion is inserted into the engagement groove. The first valve body and the second valve body are configured to rotate by moving the rotary shaft to open and close the first valve body and the second valve body. comprising a pair of holding halves that hold onto the connecting portions of the two couplers, and an opening movement prevention member that is installed between the distal ends of the pair of holding halves and prevents the opening movement of the pair of holding halves; The pushing action of the rod of the valve body operating mechanism against the opening movement blocking member causes the opening movement blocking member to release, and the pair of holding halves to open. An emergency disengagement device for a fluid cargo handling device, characterized in that it is configured to release the connection state. 2. The emergency disengagement device for a fluid cargo handling device according to claim 1, wherein the engaging portion engages the Scotch yoke when the first valve body and the second valve body are in a valve open state and a valve closed state. An emergency release device for a fluid cargo handling device, characterized in that the device is configured to suppress the rotational movement of the Scotch yoke and maintain the state of the first valve body and the second valve body. . 3. The emergency disengagement device for a fluid cargo handling device according to claim 2, wherein the Scotch yoke is formed into a substantially U-shape when viewed from the front, and each tip portion thereof has an engagement receiving surface that engages with the engagement portion of the rod. one engagement receiving surface engages with the engaging portion when the first valve body and the second valve body are in the open state, and the other engagement receiving surface engages with the first valve body and the second valve body. An emergency release device for a fluid cargo handling device, wherein the second valve body is configured to engage with the engagement portion in a closed state. The emergency release device for a fluid cargo handling device according to any one of claims 1 to 3, wherein the rod includes a first rod connected to a cylinder rod of the cylinder device, and a first rod that is separably fitted into the first rod. The first rod moves forward as the cylinder rod moves forward, and the second rod moves forward by being pushed by the first rod, thereby causing the Scotch yoke to move forward. An emergency release device for a fluid cargo handling device, characterized in that the first valve body and the second valve body are configured to be in a closed state at the same time. In the emergency release device for a fluid cargo handling device according to any one of claims 1 to 4, the opening operation blocking member has a proximal end provided at a distal end of one of the holding halves so as to be horizontally rotatable. , a distal end portion is removably engaged with a distal end portion of the other holding half, and the rod is disposed inside the opening movement blocking member installed between the distal ends of the pair of holding halves. At the same time, a pushing part for pushing the opening action preventing member is provided on the opening action preventing member side, and the tip of the opening action preventing member is pushed by the pushing action of the pushing part against the opening action preventing member. The first coupler and the second coupler are configured to be released from being held in a connected state by the holding means when the second coupler is detached from the other holding half and the pair of holding halves are opened. An emergency release device for a fluid cargo handling device, characterized in that:

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