JP6376763B2 - Fluid handling equipment - Google Patents

Description

  The present invention relates to a fluid handling apparatus that supplies a fluid such as a loading arm into a tank, and includes a gas purge mechanism that can purge the inside of the tank before supplying the fluid as necessary. It is about.

  For example, oil refineries and tankers supply different types of oil, such as gasoline and kerosene, to tanks called tank lorry hatches using a loading arm and deliver them to customers such as gas stations. When oil is supplied to an empty tank, if an oil type different from the oil type loaded in the previous tank is loaded, the inside of this tank may need to be purged with gas.

  For example, if the previous cargo was gasoline and this empty tank was loaded with kerosene this time, the previous gasoline vapor (gasoline vapor) was full, and when kerosene was supplied here, the gasoline vapor was kerosene. As a result, the gasoline vapor concentration decreases and the mixing ratio with air falls within the explosion danger range, which may cause explosion due to static electricity.

  Therefore, when there is such a fear, the inside of the tank is purged with gas before refueling.

  That is, a gas purge pipe is suspended in the tank and sucked by a blower to suck and exhaust gasoline vapor, and air is taken in and replaced to make the gasoline vapor concentration sufficiently lower than the explosion danger range before refueling.

  On the other hand, when performing such a gas purge, it is troublesome to move the tank lorry to a place where there is a gas purge facility and perform the gas purge work by dropping this gas purge pipe instead of the drop pipe of the loading arm. A gas purge pipe is provided in a branching state or a juxtaposed state on the drop pipe of the loading arm, and the gas purge apparatus attached to the drop pipe is operated as necessary (the gas purge suction drive apparatus is operated to install the gas purge pipe). Gas purge is performed by sucking and exhausting gasoline vapor in the tank.

  However, if the gas purge is performed instead of the oil type cargo handling operation at the operator's judgment (prior to this) and the cargo handling operation is performed again, if the gas purge on / off valve of the gas purge pipe is forgotten to be closed, the fluid ( For example, the oil purge) may flow backward (inflow) into the gas purge pipe even if the suction operation is not performed. If the fluid flows into the gas purge pipe and stays there, it may interfere with the gas purge function when it is performed next time. The purge (suction) function is inferior, and there is a risk of failure or a significant decrease in gas purge efficiency.

  For this reason, in order to prevent this from happening in the past, after fully checking the opening and closing of the gas purge on / off valve provided on the gas purge pipe and the opening and closing check of the on / off valve provided on the fluid handling pipe, The start switch) has to be pushed down, and the gas purge operation switch (start switch) has to be pushed down.

  In order to prevent such an erroneous operation, each pipe can be provided with an open / close sensor, and an automatic operation control device that controls the operation of each start switch can be incorporated based on this sensor. The circuit must be designed so that it cannot even be operated due to a malfunction of the device, and in such a case, and in that case, an inspection / confirmation operation due to fear of malfunction will eventually be required. End up.

  The present invention finds such a problem and solves this problem. For example, the fluid cargo handling operation prevention mechanism can be constructed and attached with a simple configuration, for example, with a simple configuration, and the gas purge opening / closing valve is forgotten to be closed after the gas purge. An object of the present invention is to provide an extremely practical fluid handling apparatus capable of reliably preventing an erroneous operation in which a fluid handling operation is performed.

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

By actuating the fluid handling driving device 4 is suspended in the tank 1 to the fluid handling tube 2 for supplying a fluid to the tank, the gas purging pipe 3 for purging the tank by operating the gas purge suction drive apparatus 5 When the fluid handling pipe 2 is provided in a branched state or in a parallel state, when the gas purge is performed, the closed state is opened and the gas purge is completed or when the gas purge is not performed, the closed state is established. the gas purge-off valve 6 that this fluid prevents the flowing back into the gas purge pipe 3 provided, the purge-off valve 6, then switch to the open state from the closed state by operating the movable gas purging switching unit 7 when performing gas purge as configured, switching to the open state of the gas purge-off valve 6 by operating to open the gas purge switching unit 7 After the change, the gas purge operation switch 10 is operated to operate the gas purge suction drive device 5 to perform the gas purge, and then the gas purge switching operation unit 7 is closed to switch the gas purge on / off valve 6 to the closed state. Then, a fluid handling device that operates the fluid handling switch 9 to operate the fluid handling drive device 4 to supply fluid into the tank 1, and the gas purge switching operation for switching the gas purge opening / closing valve 6 is performed. The unit 7 is provided with an interlocking movable part 8 which is interlocked and movable by the operation of the gas purge switching operation part 7, and a fluid cargo handling operation prevention cover part 11 which disturbs the operation of the fluid cargo handling operation switch 9 is provided on the interlocking movable part 8. In addition, a gas purge operation prevention cover portion 12 that interferes with the operation of the gas purge operation switch 10 is provided, and the gas purge switching operation is performed. When the operation portion 7 is operated and the gas purge on / off valve 6 is opened, the fluid handling operation prevention cover unit 11 operates the fluid handling operation switch 9 by the interlocking movement of the interlocking movable portion 8. When the gas purge switching operation unit 7 is operated and moved to the closed state while the gas purge on / off valve 6 is closed, the fluid handling is performed by the interlocked movement of the interlocking movable unit 8. The operation preventing cover portion 11 is retracted to move to a position where it does not interfere with the operation of the fluid cargo handling operation switch 9, and the interlock movable portion 8 moves the gas purge operation prevention cover portion 12 to the gas purge. further comprising a fluid handling actuation inhibiting mechanism a interlocked with the opening and closing moving the gas purge-off valve 6 which is configured to work move the way a position of the operation of the operation switch 10 Those of the fluid handling apparatus characterized.

In addition, the gas purge suction drive device is branched or juxtaposed to the drop pipe 2 that hangs down in the tank 1 at the tip of the loading arm 13 that becomes the fluid handling tube 2 including the fluid handling drive device 4. the gas purge tube 3 having a 5 provided, which relates to a fluid handling apparatus according to claim 1, characterized in that a 6 before SL gas purge-off valve to the gas purge tube 3.

  Further, the fluid cargo handling operation blocking cover portion 11 and the gas purge operation blocking cover portion 12 are configured by a cover plate that covers the fluid cargo handling operation switch 9 or the gas purge operation switch 10 so as to obstruct a pressing operation. The fluid handling apparatus according to any one of claims 1 and 2, wherein the fluid handling apparatus is provided.

  The gas purge switching operation unit 7 is provided in the gas purge switching valve 6 as an operation lever that rotates forward and backward to open and close the gas purge switching valve 6, and is interlocked by forward and reverse rotation of the gas purge switching operation unit 7. The interlocking movable part 8 is provided in the gas purge switching operation part 7. The interlocking movable part 8 is provided with the fluid cargo handling operation prevention cover part 11 and the gas purge operation prevention cover part 12, and the gas purge switching operation part 7 is When the gas purge on / off valve 6 is closed by operating it, the fluid cargo handling operation prevention cover portion 11 is retracted by the interlocking movement of the interlocking movable portion 8 and the fluid cargo operation switch 9 is operated. A position in which the gas purge operation prevention cover unit 12 cannot operate the gas purge operation switch 10 due to the interlocking movement of the interlocking movable portion 8 to the position where the gas purge operation switch 10 can be operated. The gas purging switching operation unit 7 is provided with an interlocking mechanism 14 including the interlocking movable part 8 that interlocks and moves, and the position of the fluid handling operation blocking cover part 11 and the gas purge operation blocking cover part 12 and the fluid handling operation 4. The fluid handling apparatus according to claim 1, wherein the position of the switch 9 and the gas purge operation switch 10 is set to configure the fluid handling operation prevention mechanism A. 5. is there.

  Since the present invention is configured as described above, it is possible to construct and attach a fluid cargo handling operation prevention mechanism with a simple configuration, that is, with a simple configuration, for example. Thus, the fluid handling device can be reliably prevented and is extremely practical.

  Further, in the inventions according to claims 2, 3 and 4, the present invention can be realized more easily, and the fluid handling apparatus can be more practical.

It is schematic structure explanatory drawing of a present Example. It is explanatory front view in the gas purge operation | work performed prior to the fluid handling operation | work of a present Example. It is a description front view in the fluid handling operation | work of a present Example. FIG. 5 is an explanatory plan view showing a state where the fluid handling operation switch is covered and cannot be pressed during a gas purge operation (a state where the gas purge opening / closing valve is opened) performed prior to the fluid handling operation of the present embodiment. An explanatory plan view showing a state in which the fluid handling operation switch is open and can be pressed (and the gas purge operation switch is covered and cannot be pressed) during the fluid handling operation of the present embodiment (the gas purge on / off valve is closed). It is.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  Prior to supplying (loading) the fluid, when the inside of the tank 1 is purged with gas, if the gas purge switching operation section 7 is opened to open the gas purge switching valve 6, the operation of the gas purge switching operation section 7 is linked. Then, the interlocking movable part 8 is interlocked and movable, and the interlocking movable part 8 moves the interlocking movement of the fluid cargo handling operation prevention cover part 11 to a position that interferes with the operation of the fluid cargo handling operation switch 9 to prevent the gas purge operation. On the contrary, the cover part 12 is retreated from a position where the operation of the gas purge operation switch 10 is obstructed.

  Accordingly, when the gas purge switching operation unit 7 is opened to open the gas purge on / off valve 6, the fluid handling operation switch 9 for automatically operating the fluid handling drive device 4 without confirmation is provided with a fluid handling operation blocking cover. The gas purge operation switch 10 for operating the gas purge suction drive device 5 is not covered by the gas purge operation prevention cover unit 12 and is opened without being operated. The gas purge suction switch 5 can be operated easily by operating the gas purge operation switch 10 and the inside of the tank 1 can be gas purged via the gas purge pipe 3.

  When this gas purge is completed and the gas purge switching operation unit 7 is closed and the gas purge switching valve 6 is closed, the interlocking movable unit 8 is interlocked and moved in conjunction with the operation of the gas purge switching operation unit 7. This interlocking movement of the interlocking movable portion 8 causes the fluid cargo handling operation prevention cover portion 11 to retreat and open the fluid cargo handling operation switch 9, and the gas purge operation prevention cover portion 12 interferes with the operation of the gas purge operation switch 10. It moves in conjunction with the position.

  Therefore, when the gas purge is finished or when the gas purge is not performed, the gas purge switching operation unit 7 is closed and the gas purge switching valve 6 is closed. Since the fluid cargo handling operation switch 9 that automatically operates the fluid cargo handling drive device 4 by being movable is opened and can be operated, the fluid cargo handling switch 9 can be easily operated (for example, pushed down). The driving device 4 is activated and the fluid can be supplied to the tank 1 through the fluid handling tube 2.

  In this case, if the gas purge on / off valve 6 is forgotten to be closed, the gas purge switching operation unit 7 is in a position to open the gas purge on / off valve 6, and thus the fluid cargo handling drive unit 4 is operated as described above. Since the fluid handling operation switch 9 is covered by the fluid handling operation prevention cover portion 11 and cannot be easily operated, the fluid handling operation switch 9 is operated to forget to close the gas purge on / off valve 6 to supply the fluid. Can be automatically prevented.

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

  A fluid handling tube 4 for operating the fluid handling device 4 to supply the fluid into the tank 1 and a gas purge tube 3 for operating the gas purge suction driving device 5 to purge the inside of the tank with gas are branched to the fluid handling tube 2. The gas purge pipe 3 is provided with a gas purge opening / closing valve 6 which is provided in a state or a parallel arrangement state and is switched by the operation of the gas purge switching operation unit 7 from the closed state to the open state when performing this gas purge.

  That is, in this embodiment, the gas purge switching operation section 7 is opened to switch the gas purge on / off valve 6 to the open state, and then the gas purge operation switch 10 is operated for a predetermined time by pressing down (in this embodiment). After operating the start switch) to operate the gas purge suction drive 5 to perform gas purge, the gas purge switching operation unit 7 is closed to switch the gas purge on / off valve 6 to the closed state, and then the fluid handling operation is performed. By operating a switch 9 (in this embodiment, a start switch that operates when pressed down for a predetermined time), the fluid cargo driving device 4 is operated to supply fluid into the tank 1.

  More specifically, in this embodiment, the drop pipe 2 hanging down in the tank 1 at the front end of the loading arm 13 to be the fluid handling pipe 2 provided with the fluid handling drive device 4 is branched into the gas purge. The gas purge pipe 3 provided with the suction drive device 5 is provided, and the gas purge pipe 3 is suspended in the tank 1 in an open state when the gas purge is performed and in a closed state after the gas purge is completed or when the gas purge is not performed. The gas purge opening / closing valve 6 is provided for preventing the fluid from flowing backward to the gas purge pipe 3 when the fluid is supplied by the drop pipe 2.

  The gas purge switching operation unit 7 that switches the gas purge on / off valve 6 is provided with an interlocking movable unit 8 that is interlocked and movable by operating the gas purge switching operation unit 7. In addition to providing a fluid cargo handling operation blocking cover portion 11 that hinders the operation, a gas purge operation blocking cover portion 12 that blocks the operation of the gas purge operation switch 10 is provided.

  Specifically, the gas purge switching operation unit 7 is provided on the gas purge switching valve 6 as an operation lever that rotates forward and backward in order to open and close the gas purge switching valve 6. The interlocking movable part 8 (first interlocking movable part 8A), which interlocks and moves by movement, protrudes from the base of the gas purge switching operation part 7 while maintaining a predetermined angle, and the first interlocking movable part 8A further includes the first interlocking movable part 8A. A second interlocking movable portion 8B that reciprocally slides in a predetermined direction of the rotational surface is pivotally attached with the rotation of the movable portion 8A, and the fluid cargo handling operation blocking cover portion is attached to the reciprocatingly sliding second interlocking movable portion 8B. 11 and the gas purge operation prevention cover portion 12 are projected.

  The fluid cargo handling operation blocking cover portion 11 and the gas purge operation blocking cover portion 12 are constituted by a cover plate that covers the pressing operation of the fluid cargo handling operation switch 9 or the gas purge operation switch 10.

  Further, in this embodiment, the fluid cargo handling operation blocking cover portion 11 and the gas purge operation blocking cover portion 12 are integrated or shared. That is, a single cover plate is protruded from the interlocking movable portion 8 (second interlocking movable portion 8B that reciprocally slides), and this single cover plate serves as a fluid cargo handling operation prevention cover portion 11 and a gas purge operation prevention cover. The unit 12 is configured to function.

  In other words, in this embodiment, the fluid handling operation switch 9 and the gas purge operation switch 10 are arranged side by side and arranged in an adjacent state (for example, close to a horizontal side-by-side state), and for covering the fluid handling operation. The cover portion 11 and the gas purge operation prevention cover portion 12 are configured by a single cover plate, and the one cover plate provided as the fluid cargo handling operation prevention cover portion 11 and the gas purge operation prevention cover portion 12 By projecting the second interlocking movable portion 8B in parallel with the direction in which the switches 9 and 10 are juxtaposed (for example, in the horizontal direction), the cover plate is moved to the left and right as the gas purge switching operation portion 7 is turned. The interlocking slide is configured to alternately switch between a position covering the fluid cargo handling operation switch 9 and a position covering the gas purge operation switch 10 and reciprocatingly slide.

  That is, when the gas purge switching operation portion 7 is operated and rotated to close the gas purge on / off valve 6, the interlock movable portion 8 is interlocked and movable (the first interlock movable portion 8A is interlocked and rotated). The cover plate as the fluid cargo handling operation prevention cover portion 11 is retracted and slid to a position where the fluid cargo handling operation switch 9 can be operated (position where the switch 9 is opened) by the interlocking movable portion 8B. At the same time, the gas purge switching operation unit 7 is provided with an interlocking mechanism 14 that slides in conjunction with a position where the gas purge operation switch 10 that is the same cover plate cannot operate the gas purge operation switch 10 (a position that covers it). The operation prevention mechanism A is comprised.

  That is, the fluid cargo handling operation preventing mechanism A constructed with such a simple configuration is provided to the forward / reverse rotation operation lever 7 for opening / closing the gas purge on / off valve 6.

  Accordingly, when the inside of the tank 1 is purged with gas prior to supplying (loading) the fluid, the gas purge switching operation section 7 is rotated in the opening direction to open the gas purge switching valve 6. The first interlocking movable part 8A is interlocked and rotated in conjunction with the operation movement of the first interlocking movable part 8A, and the second interlocking movable part 8B is slid in a predetermined direction by the rotation of the first interlocking movable part 8A. The cover plate that is the part 11 slides to a position that obstructs the operation of the fluid handling operation switch 9 (the position that covers it), and the cover plate that is also the cover part 12 for preventing the gas purge operation simultaneously operates the gas purge operation switch 10 Retreats from a position that obstructs (a position that covers this).

  Accordingly, when the gas purge switching operation unit 7 is rotated to open the gas purge on / off valve 6, the fluid cargo handling switch 9 that automatically operates the fluid cargo handling drive device 4 without confirmation is provided with a fluid cargo handling operation prevention cover. The gas purge operation switch 10 for operating the gas purge suction drive device 5 is not covered by the gas purge operation prevention cover unit 12 and is opened without being operated. The gas purge suction switch 5 can be operated easily by operating the gas purge operation switch 10 to easily purge the tank 1 through the gas purge pipe 3.

  When the gas purge is finished and the gas purge switching operation unit 7 is rotated in the reverse direction to close the gas purge switching valve 6, the interlocking movable unit 8 is interlocked with the operation rotation of the gas purge switching operation unit 7. As a result, the second interlocking movable portion 8B slides in the opposite direction, and the fluid cargo handling operation prevention cover portion 11 (cover plate) provided in the second interlocking movable portion 8B moves back and forth. The cargo handling operation switch 9 is opened, and the gas purge operation prevention cover portion 12 (the same cover plate) slides in conjunction with the position covering the gas purge operation switch 10.

  Therefore, when the gas purge is completed or when the gas purge is not performed, the gas purge switching operation unit 7 is operated to rotate and the gas purge on / off valve 6 is closed. Since the fluid handling operation switch 9 that automatically operates the fluid handling drive device 4 by the operation rotation of 7 is opened and can be operated, the fluid can be simply operated (e.g., pushed down). The cargo handling drive unit 4 is activated and fluid can be supplied to the tank 1 via the fluid handling tube 2.

  In this case, if the gas purge on / off valve 6 is forgotten to be closed, the gas purge switching operation unit 7 is in a position to open the gas purge on / off valve 6, and thus the fluid cargo handling drive unit 4 is operated as described above. Since the fluid handling operation switch 9 is covered with the fluid handling operation prevention cover portion 11 (cover plate) and cannot be easily operated, the fluid handling operation switch 9 is operated without forgetting to close the gas purge on / off valve 6. Thus, the fluid supply can be automatically prevented from starting.

  Further, since the gas purge operation switch 10 is covered and cannot be operated when the gas purge on / off valve 6 is closed, it is possible to prevent the gas purge operation switch 10 from being erroneously operated even when the gas purge on / off valve 6 is closed. It becomes.

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

1 Tank 2 Fluid Handling Pipe (Drop Pipe)
DESCRIPTION OF SYMBOLS 3 Gas purge pipe | tube 4 Fluid handling drive device 5 Gas purge suction drive device 6 Gas purge on-off valve 7 Gas purge switching operation part 8 Interlocking movable part 9 Fluid handling operation switch
10 Gas purge operation switch
11 Cover for preventing fluid handling operation
12 Cover for preventing gas purge operation
13 Loading arm
14 Interlocking mechanism A Fluid handling operation prevention mechanism

Claims (4)

A fluid handling tube that hangs down in a tank and operates a fluid handling drive device to supply fluid into the tank, and a gas purge tube that performs gas purge in the tank by operating a gas purge suction drive device branches to the fluid handling tube When the gas purge is performed, the closed state is opened and the gas purge is ended or when the gas purge is not performed, the fluid is supplied to the gas purge pipe when the fluid is supplied into the tank. the gas purge off valve to prevent the backflow provided, the gas purge-off valve, as switches El configured opened state from the closed state by operating the movable gas purging switching unit when performing gas purge, open the gas purge switching unit operation After switching the gas purge open / close valve to the open state, the gas purge operation is performed. After operating the switch to activate the gas purge suction drive device and performing the gas purge, after closing the gas purge switching operation unit and switching the gas purge on / off valve to the closed state, operating the fluid handling operation switch A fluid handling device that operates the fluid handling drive device to supply fluid into the tank, and is linked to the gas purge switching operation unit that opens and closes the gas purge switching valve by operating the gas purge switching operation unit. An interlocking movable part is provided, and a fluid cargo handling operation prevention cover part that disturbs the operation of the fluid cargo handling operation switch is provided on the interlocking movable part, and a gas purge action prevention cover part that disturbs the operation of the gas purge action switch is provided. The gas purge switching operation section is movable to open the gas purge opening / closing valve. The interlocking movable portion of the interlocking movable portion moves the fluid cargo handling operation prevention cover portion to a position that interferes with the operation of the fluid cargo handling operation switch, and conversely, the gas purge switching operation portion can be operated and moved. When the gas purge on / off valve is closed, the fluid handling operation blocking cover is retracted by the interlocking movement of the interlocking movable portion, and is interlocked to a position that does not interfere with the operation of the fluid handling operation switch. And the fluid interlocking with the movable opening / closing operation of the gas purge on / off valve configured such that the interlocking movable portion of the interlocking movable portion moves the gas purge operation blocking cover portion to a position that interferes with the operation of the gas purge operation switch. A fluid handling apparatus comprising a cargo handling operation prevention mechanism. The gas purge pipe provided with the gas purge suction drive device in a branched state or a juxtaposed state is provided in a drop pipe that hangs down in the tank at a tip end of a loading arm serving as the fluid handling tube provided with the fluid cargo handling drive device. provided, the fluid handling apparatus according to claim 1, characterized in that a pre-SL gas purge-off valve to the gas purge tube.   2. The fluid cargo handling operation prevention cover portion and the gas purge operation prevention cover portion are configured by a cover plate that covers the fluid cargo handling operation switch or the gas purge operation switch so as not to be depressed. 3. A fluid handling apparatus according to claim 1.   The gas purge switching operation unit is provided in the gas purge on / off valve as an operation lever that rotates forward and backward to open and close the gas purge on / off valve, and the interlock movable unit that is interlocked and movable by forward and reverse rotation of the gas purge switching operation unit. Is provided in the gas purge switching operation portion, and the interlocking movable portion is provided with the fluid cargo handling operation prevention cover portion and the gas purge operation prevention cover portion, and the gas purge switching operation portion is operated to rotate to close the gas purge switching valve. The interlocking movement of the interlocking movable part causes the fluid cargo handling operation prevention cover part to be retracted and interlocked to a position where the fluid cargo handling operation switch can be operated, and The gas purge operation blocking cover portion includes the interlocking movable portion that interlocks and moves to a position where the gas purge operation switch cannot be operated. An operating mechanism is provided in the gas purge switching operation part, and the positions of the fluid cargo handling operation prevention cover part and the gas purge operation prevention cover part, and the positions of the fluid cargo handling operation switch and the gas purge operation switch are set. The fluid handling apparatus according to any one of claims 1 to 3, wherein a cargo handling operation preventing mechanism is configured.

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