JPS6028856Y2 - Remote dual transmission device for operating power of marine valves - Google Patents

Description

[Detailed description of the invention] The present invention is a system for two-way remote control of several positions by selectively transmitting rotational force and fluid pressure as operation power to a valve installed at a remote position from a starting part in a ship. This invention relates to an improvement of a dual power transmission device for operating a marine valve.

Generally, on ships, when valves are installed in locations that cannot be easily accessed by operators, such as inside tanks, duct keels, holds, or at the bottom of pump rooms, the starting parts that generate operating power for several positions are placed on the deck. First, because the valve is installed in a location that is easily accessible to the operator, such as the entrance of the pump chamber, that is, a location that is remote from the valve, it is necessary to remotely control the valve.

In this case, if the required operating force of the valve is large compared to the human output, if you want to save labor in valve operation, or if you want to operate multiple valves in one place centrally, hydraulic Alternatively, it is widely practiced to attach a fluid pressure actuator such as a pneumatic actuator and remotely control the actuator.

On the other hand, when remotely controlling such valves, if remote control of the valve becomes impossible due to a failure related to the above-mentioned fluid pressure actuator, aging or corrosion of the piping, or damage due to external factors, etc., the inside of the tank or Cargo handling operations may have to be interrupted to repair valves in the cargo hold, etc., and the tank or cargo hold may have to be emptied.Furthermore, depending on the cargo being loaded, if the interior is not gas-free, failure or damage may occur. This makes repair work extremely difficult.

Therefore, it is desirable to be able to remotely control such a valve in two ways.

In other words, under normal conditions, fluid pressure is supplied and transmitted from the starting part to the fluid pressure actuator, and the valve is operated by the fluid pressure actuator.On the other hand, in the event of a failure of the fluid pressure actuator, damage to piping, or an emergency such as fire or flooding, It is desirable to provide two different types of valve operating mechanisms that can be operated remotely so that the valve is operated by transmitting rotational force from the starting part to the valve via the transmission shaft.

However, on the other hand, there is a problem in that both a transmission shaft and piping are required, resulting in additional equipment costs.

Therefore, the present invention was developed in view of the above, and includes a transmission shaft that transmits the rotational force of the actuator to the valve, together with a rotational force transmission mechanism, for the operation of the actuator between the actuator and the valve actuator. By combining the function of a pipe line to supply and transmit the necessary fluid pressure and enabling two-way remote control of the valve, the equipment cost required for a two-way operation mechanism is reduced, and the aging of the piping is reduced. The purpose of this invention is to improve the reliability of the remote control mechanism by eliminating damage caused by corrosion, external factors, etc. as much as possible.

In order to achieve this object, the configuration of the present invention is to selectively transmit rotational force and fluid pressure as operating power to a marine valve so that the valve can be operated dually remotely. a remote two-way transmission device, a starting section having a rotational force generation section that generates rotational force and a fluid pressure generation section that generates fluid pressure; a valve actuator that is driven by the fluid pressure and controls opening and closing of the valve; a transmission shaft that is rotationally driven by the rotational force generating section of the starting section and has an axial fluid pressure flow conduit formed therein; and a transmission shaft provided at both ends of the transmission shaft;
a rotary joint that connects the pipe line and the fluid pressure generating part of the starting part and the pipe line and the valve actuator so that they can communicate with each other;
a loose coupling provided between the transmission shaft and the output shaft end of the valve actuator, which allows the valve actuator to operate and transmits the rotational force of the transmission shaft to the output shaft of the valve actuator. It is something.

As a result, when remotely controlling a valve using the rotational force generated in the rotational force generation section of the starter, this rotational force is transmitted to the valve via the transmission shaft, loose coupling, and output shaft of the valve actuator. While opening and closing the
When remotely controlling a valve using the fluid pressure generated in the fluid pressure generating section of the starting section, this fluid pressure is guided to the conduit inside the transmission shaft via the rotary joint at one end of the transmission shaft, and then the other end of the transmission shaft is guided. The signal is transmitted to the valve actuator through the rotary joint, and the actuator opens and closes the valve.

Furthermore, in the present invention, the transmission shaft is formed by connecting a plurality of divided shafts each having an axial pipe line therein, and the connecting portion of the divided shafts is provided with a rotational force transmission mechanism for transmitting rotational force. By providing a pair of rotary joints that connect the pipelines so that they can communicate with each other, the arrangement of the conduction shaft between the starting part and the marine valve can be freely set, and the valve can be operated at any remote location. It is designed to transmit power (rotational force and fluid pressure).

Further, the number of the pipes is three or more, and a part of the pipes is used as a pilot passage for detecting the state of the valve actuator, so that the actuator is constantly monitored.

Here, the above-mentioned marine valve is not particularly limited as long as it can be opened and closed by rotating the valve body, but butterfly valves, ball valves, etc. can be opened and closed by rotating the valve body by 90 degrees. Preferably.

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

FIG. 1 shows an embodiment in which the present invention is applied to remotely control a ship valve installed in a tank of a ship.

In Fig. 1, 1 is an upper deck, 2 is a tank room located at the bottom of the upper deck 1, and 3 is a marine valve installed in the tank room 2. It is made of, for example, a butterfly valve, a ball valve, etc., which can be opened and closed by rotating it.

Reference numeral 4 denotes a starting section provided on the upper deck 1, and the starting section 4 consists of a rotating force generating section 5 that generates a rotating force and a fluid pressure generating section 6 that generates a predetermined fluid pressure. .

The rotational force generating section 5 is mounted on a base 7 fixed on the upper deck 1.
An operating shaft 8 extending horizontally through the side wall is rotatably supported, and the operating shaft 8 is rotated by a manual handle 9 as shown in the figure or by driving a rotary drive device such as a motor. It is designed to generate rotational force.

The fluid pressure generating section 6 also includes a power unit 10 that generates hydraulic or pneumatic fluid pressure, and a power unit 10 that generates hydraulic or pneumatic fluid pressure.
A hand pump that relays and controls fluid pressure from 0 to a predetermined pressure,
The fluid pressure control section 11 includes a control valve and the like, and is configured to generate a predetermined fluid pressure from the fluid pressure control section 11.

On the other hand, reference numeral 12 includes a hydraulic cylinder which is provided above the marine valve 3 in the tank chamber 2 and is driven by fluid pressure to extend and contract, and a rack & The actuator 12 is a valve actuator made of a pinion or the like, and the actuator 12 has two output shafts 12a extending in the vertical direction.The lower end of the output shaft 12a is connected to the marine valve 3, and the actuator 12 The opening and closing of the valve 3 is controlled by the forward and reverse rotation of the output shaft 12a.

13 constitutes the main part of the present invention,
A transmission shaft extends vertically coaxially with the output shaft 12a of the valve actuator 12, and the upper end of the transmission shaft 13 penetrates the upper deck 1 and protrudes into the base 7, and the lower end of the transmission shaft 13 extends vertically. It extends to the vicinity of the valve actuator 12 and is rotatably supported by the base 7 via a thrust bearing 14 at its upper end.

The transmission shaft 13 is connected to the operation shaft 8 at its upper end.
A bevel gear 15 fixed to the tip of the operating shaft 8;
The transmission shaft 13 is driven in a manner such that the transmission shaft 13 is driven in forward and reverse rotation by the forward and reverse rotational force of the operation shaft 8. It is configured.

Furthermore, two pipes 18.degree. 18 extending in the axial direction are formed inside the transmission shaft 13, and serve as supply or discharge channels through which fluid pressure flows.

Both the pipes 18, 18 are opened in the radial direction at the upper and lower ends of the transmission shaft 13, respectively, with a slight vertical shift, and the radial openings at the upper and lower ends of each pipe 18, 18 1B, 18at 18b-18b, upper and lower rotary joints 19, 20 are fitted into the upper and lower ends of the transmission shaft 13, respectively.

Each rotary joint 19,20 has a radial opening 18a, 18a, 18 at the upper and lower end of each conduit 18,18.
b, two annular grooves 19a facing and communicating with 18b?
19a*20a*20a, and the annular grooves 19a, , 19a of the upper rotary joint 19 are connected to the flow passages 21.
21 to the fluid pressure generating section 6 (fluid pressure control section 11) of the starting section 4, and the annular i of the lower rotary joint 20.
20 at 20 a is connected to the valve actuator 12 via a flow passage 22.22, and thus the transmission shaft 13 is connected to the valve actuator 12 by the upper and lower rotary joints 19.20.
The pipes 18 and 1B in the transmission shaft 13 are connected to the fluid pressure generating part 6 (fluid pressure control part 11) of the starting part 4, and the pipe line 18 and the valve actuator 12 are connected so as to be able to communicate with each other while allowing rotation of the valve actuator 12. I have to.

Further, the lower end of the transmission shaft 13 and the valve actuator 1 are connected to each other.
A loose coupling 23 is interposed between the upper end of the output shaft 12a and the upper end of the output shaft 12a.

The loose coupling 23, as also shown in FIG.
Engagement pins 24a, 24 are provided concentrically at the lower end of the transmission shaft 13 and protrude downward at diametrically opposed positions on the lower surface.
A disk-shaped upper coupling body 24 having a shape of 1.a is provided concentrically with the upper end of the output shaft 12a of the valve actuator 12, and the above-mentioned engagement pins 24a, 24a are slidably engaged with each other.

It consists of a disc-shaped lower coupling body 25 having circular arc grooves 25a, 25a with an arc angle of approximately 90° centered on the axis of the output shaft 12a, and located symmetrically with respect to the axis of the output shaft 12a. When the shaft 13 rotates, the upper coupling body 24
The engaging pins 24a, 24a of the lower coupling body 25 engage with the ends of the arcuate grooves 25a, 25a, and the coupling bodies 24,25 rotate together to rotate the transmission shaft 13. The rotational force is transferred to the output shaft 12a of the valve actuator 12.
On the other hand, when the valve actuator 12 is operated, the engagement pins 24a, 24a of the upper coupling body 24 are transmitted to the respective arcuate grooves 25a, 25a of the lower coupling body 25.
The valve actuator 12 is configured to slide freely, without rotating the transmission shaft 13, and to allow only the valve actuator 12 to operate.

Next, to explain the operation of the above embodiment, the starting section 4
In the normal case where the marine valve 3 is remotely controlled by the fluid pressure generated in the fluid pressure generation section 6, the fluid pressure controlled to a predetermined pressure by the fluid pressure control section 11 of the fluid pressure generation section 6 is as follows. One annular groove 19a of the upper rotary joint 19 via one of the flow passages 21
from the transmission shaft 13 into one of the pipes 18 provided inside the transmission shaft 13, and after flowing downward in the pipe 18, the lower rotary joint 2
0 is supplied to the valve actuator 12 via one of the flow passages 22.

On the other hand, the discharge of fluid pressure from the valve actuator 12 is as follows:
Contrary to the above, the other flow path 22 → the other annular groove 20a of the lower rotary joint 20 → the other pipe line 19 → the upper rotary joint 1
The fluid is discharged from the fluid pressure generating section 6 (power unit 10) of the starting section 4 to an oil tank (not shown) or to the atmosphere via the other annular R19a of 9 and the other flow path 21.

Then, the actuator 12 is actuated by supplying and transmitting fluid pressure to the valve actuator 12, and the valve body of the marine valve 3 is rotated 90 degrees forward or reverse through its output shaft 12a, thereby opening and closing several valves 3. will be manipulated.

In this case, since the output shaft of the valve actuator 12 is connected to the transmission shaft 13 via the loose coupling 23, the transmission shaft 13 cannot rotate even if the output shaft 12a of the actuator 12 rotates. Therefore, the operation of the valve actuator 12 alone can be ensured.

Furthermore, since the pipe lines 18 and 18 are formed inside the conduction shaft 13, there is no need for separate pipes, and damage to the pipes due to aging, corrosion, external factors, etc., as in conventional pipes, can be prevented. The above-mentioned remote control can be performed stably over a long period of time, and its reliability can be significantly improved.

-4. In an emergency such as failure of the valve actuator 12, breakage of piping, fire or flooding, etc., in which the marine valve 3 cannot be remotely operated using the fluid pressure, the rotational force generated in the rotational force generating part 5 of the starting part 4 The marine valve 3 is remotely controlled by rotational force.

In that case, for example, by rotating the manual bundle 9 in the rotational force generating section 5 of the starting section 4, the operating shaft 8 is
The rotational force generated in Through the valve body 90 of the marine valve 3
By rotating forward or backward, several doors 3 can be opened and closed.

Therefore, the dual remote control of the marine valve 3 using fluid pressure and the remote control of several valves 3 using rotational force can be achieved by using one transmission shaft 13 that also serves as the pipes 18, 18. This is possible with a simple structure, so it can be carried out with low equipment costs, and the reliability of remote control of the valve 3 is improved.
Operational stability can be dramatically improved.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but also includes various other modifications.

For example, in the above embodiment, a case has been described in which the marine valve 3 is installed directly below the starting part 4. If it cannot be installed directly below or to the side, or if the starting part 4
If the distance is far from the center, a conduction shaft 26, for example as shown in FIG. 3, is used.

That is, in FIG. 3, the transmission shaft 26 is formed by connecting a first divided shaft 27 extending in the vertical direction, a second divided shaft 28 extending in the horizontal direction, and a third divided shaft 29 extending in the vertical direction, Two pipe lines 30 to 32 in the axial direction are formed inside each of the divided shafts 27 to 29, and the connecting portions between the divided shafts 27 and 28 and 28 and 29 are respectively connected to each divided shaft. A pair of bevel gears 33a, 33b and 34a, 34 provided at each end of the shafts 27 and 28 and 28 and 29
A pair of rotary joints 35, 35 and 36, 36 are provided which connect the pipe lines 30 and 31 and 31 and 32 so as to communicate with each other. It is configured to sequentially transmit rotational force and fluid pressure from the first divided shaft 27 to the second divided shaft 28 and from the second divided shaft 28 to the third divided shaft 29.

In this case, the arrangement of the transmission shaft 26 between the starting part 4 and the marine valve 3 can be freely selected without being restricted by other factors, and the operating power (rotational force) can be applied to the valve 3 at any remote location. This is practically preferable because it can reliably conduct the flow (and fluid pressure) and eliminate layout constraints.

Furthermore, the number of dividing axes may be increased or decreased as necessary.

Further, in the above embodiment, the pipe line 18 and the flow path 21.2
2 is used as a fluid pressure flow path supply path and discharge path for driving the actuator 12, but when the valve 3 is not remotely controlled by fluid pressure, it can be used as a pilot path for detecting the state of the valve actuator 12. can.

Further, three or more of the pipes 18 are provided, two of which are used as a supply path and a discharge path for the fluid pressure for driving the actuator 12 as in the above embodiment, and the rest are used as pilot passages for detecting the state of the actuator 12, The actuator 12 may be constantly monitored.

Furthermore, in the above embodiment, the valve body 90 is used as the marine valve 3.
Butterfly valve, which is operated to open and close by rotating
Although a ball valve and the like have been described, it is of course applicable to various other valves that are opened and closed by rotating a valve body.

As described above, according to the present invention, one
Using a transmission shaft, the rotational force and fluid pressure generated in the starting part are transmitted to the valve with an actuator, making it possible to remotely control the device from two sources, simplifying the structure of the two-way remote control mechanism. , it is possible to reduce the equipment cost.

Moreover, by providing a conduit inside the transmission shaft, it is possible to prevent the conventional piping from being damaged due to aging, corrosion, external factors, etc., and together with the simplification of the above structure, it is possible to remotely control the valve. This makes it possible to dramatically improve reliability.

Furthermore, if the above-mentioned transmission shaft is constructed by connecting a plurality of split shafts so that rotational force and fluid pressure can be transmitted, the arrangement of the transmission shafts can be freely selected, and two-way remote transmission to valves at any remote location is possible. As a result, restrictions on device layout can be resolved.

Further, if the number of the pipes is three or more, and some of them are used as pilot passages for detecting the state of the valve actuator, there is an advantage that the actuator can be constantly remotely monitored.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention. Figure 1 is a schematic vertical sectional view showing the overall structure, Figure 2 is a sectional view taken along the line n-■ of Figure 1, and Figure 3
The figure is a partial vertical sectional view showing a modified example of the conduction shaft. 3... Marine valve, 4... Starting part, 5...
...Rotational force generating section, 6...Fluid pressure generating section, 12...Valve actuator, 12a...
...Output shaft, 13...Conduction shaft, 18...
...Pipeline, 19,20...Rotary joint, 23...
...Loose coupling, 26...Conduction shaft, 27-29...Divided shaft, 30-32...
...Pipeline, 33.34...Rotational force transmission mechanism, 3
5.36...Rotating joint.

Claims (3)

[Scope of utility model registration request] (1) A remote binary transmission device for operating power for a marine valve, which selectively transmits rotational force and fluid pressure as operating power to a marine valve to perform binary remote control of several positions, A starter section having a rotational force generator that generates rotational force and a fluid pressure generator that generates fluid pressure, a valve actuator that is driven by the fluid pressure and controls opening and closing of the valve, and a rotational force generator of the starter section. A transmission shaft that is rotationally driven and has an axial fluid pressure distribution pipe formed inside thereof, and a fluid pressure generating part provided at both ends of the transmission shaft for use with the pipe and the fluid pressure generating part of the starting part, and the pipe and valve. A rotary joint that connects the actuators so that they can communicate with each other, is provided between the transmission shaft and the end of the output shaft of the valve actuator, and allows the valve actuator to operate and transfers the rotational force of the transmission shaft to the output shaft of the valve actuator. A remote two-way transmission device for operating power for a marine valve, comprising a loose coupling for transmitting power to a vessel. (2) The transmission shaft is made up of a plurality of divided shafts connected to each other, each having an axial pipe line inside, and the connecting part of the divided shafts has a rotational force transmission mechanism for transmitting rotational force and a mutual pipe line. A remote binary power transmission device for operating a marine valve according to claim (1), which is provided with a pair of rotary joints that communicatively connect the two rotary joints. (3) Three or more pipes are provided in the transmission shaft, two of which are used as supply and discharge channels for the fluid pressure to drive the valve actuator, and the remaining are used as pilot channels to detect the state of the actuator. Scope of patent registration request No.
1) A remote dual transmission device for operating power for a marine valve as described in item 1).