JPS61217429A - Intemediate pressure set-up method for capsule transport - Google Patents

Abstract

PURPOSE:To improve allowable scope of design, by connecting a pressure set-up projection device consisting of upper and lower sluice valves, a suction blower, a main blower, and switch valves, in order to project for pressure set-up purpose, after arranging to connect a braking zone, link-up portions, a carrier device, and connection releasing devices. CONSTITUTION:A capsule 1d in a braking zone F is decelerated to strike and connect a capsule 1c await forward, and a capsule 1b is moved forward by a carrier device 4 to release the connection of capsules 1b and 1a. In this case, a sluice valve 7 is opened, a sluice valve 8 is closed, and a switch valve 11 is opened, to drive a suction blower 12, so that the capsule 1a is sucked and brought to the end of the suction and blowing portion D. The capsule 1a is braked by the air pressure between the capsule and the sluice valve 8. Then valves 7 and 11 are closed and valves 8 and 10 are opened, and a main blower 13 is driven to deliver the capsule la up to the front of the blowing and projection portion E, and the capsule 1a is projected after converting the switch valves 10 and 9. In such a composition, the allowable scope of design is widened and pressure set-up efficiency is improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for increasing the intermediate pressure of an air capsule transport path.

[Prior art] Air capsule transportation involves loading objects to be transported into wheeled capsules and transporting them on air currents within a transportation route (pipeline), but the longer the transportation route, the lower the transportation pressure. Therefore, for a pipe with a diameter of 1 m, an intermediate pressure increase is required after 5 to 6 km, depending on the load of the transported object. As this intermediate boosting method, the following methods (1) to (4) have been proposed.

(1) Air bypass/double gate valve system (the only one in practical use in the Soviet Union) This uses an air bypass section to maintain the capsule spacing and then performs intermediate pressurization. In other words, air bypasses are installed at intervals slightly shorter than the capsule spacing, and these air bypasses bypass the air in the main transportation route in a certain section, thereby eliminating the propulsive force of the capsule in that section and stopping the capsule. It consists of a horizontal wood pipe that is slightly longer than the natural coasting distance of the capsule and an air bypass in that section. (There are also systems that shorten the length of the bypass section by installing a gate valve in the main pipe.) This air bypass prevents subsequent capsules from stopping within the air bypass section until the preceding capsule has passed through the wood pipe of the air bypass section immediately downstream. By doing so, the number of capsules between adjacent air bypasses is set to 1 or less, and the capsule interval is always maintained at a distance greater than or equal to the distance between air bypasses. In this way, the capsules will pass at intervals of a certain value or more at any location along the transport route. At Siltem, where such measures are taken, the following intermediate pressure increases will be possible. That is, in FIGS. 5 (SL) to (f), when the capsule l approaches the upstream gate valve Gl of the transport path 2, the airflow outlet is switched from SZ to 8ri [(a) → (b)], When capsule l passes through 01, 01 closes and downstream gate valve G2 opens [(b)
→(c)], then the airflow inlet switches from Dl to Dl [(C)→(d)], and when the capsule passes 02, the airflow inlet switches from Dl to Dl [(d)→Ce ＞
1, then G2 is closed, 0ri is opened, and the discharge port is switched from 51 to 52 [(e)→(f)], so that intermediate pressure is applied.

(2) Flap valve system This has been developed in the UK and is being tested, and its mechanism is shown in Figures 6(&) to (f). is upstream of the airflow suction port S.

Valve N is closed due to the differential pressure generated by the blower [(a)
], (b) shows the state in which the capsule has reached the position where it blocks the suction port S. At this time, the air between the capsule L and the flap valve N is compressed, and the differential pressure across the valve N is reversed, causing the valve to close. N opens quickly.

(C) shows the moment when the front seal of the train's leading capsule l is about to pass through the valve N. While the capsule l passes through the valve N, the valve N is kept open by the action of the counterweight (
d) When the i-most tail of the 0 train passes through the discharge port H, the airflow becomes able to flow backwards under the valve, creating a pressure difference between the top and bottom of the valve N, which closes the valve [(e) → (f) ], the capsule l is pushed forward by the airflow from the blower.

(3) Jet pump type As shown in Fig. 7, this jet pump extracts a part of the airflow in the transportation path 2, uses a blower to inject the jet airflow into the transportation path z through the jet nozzle P, and moves the traveling capsule. It is moved and propelled by suction pressure.

(4) Continuous cargo handling system diversion type This is a continuous cargo handling system such as the one disclosed in Japanese Patent Publication No. 59-45570, which is used as an intermediate booster without cargo handling, and is an application of existing technology. .

As shown in FIG. 8, there is a braking zone F, an automatic capsule coupling device 3, a capsule conveying device 4, a coupling release device 5, a switchback type launcher 16, and a suction and main blower 12.
, 13. In the braking zone, the capsule traveling at high speed on the transport route 2 is controlled to a predetermined speed, collides with the preceding capsule, is connected by the automatic coupling device 3 installed at the front and rear of the capsule, and the capsule is separated by the transport device 4. is transported, uncoupled by the uncoupling device 5, and released from the launch tube 21.
The main blower 13 directs the launch tube 21 to the launch transport path 2' and launches the capsule using the airflow from the main blower 13. Several proposals have been disclosed regarding devices and speed control methods related to this continuous cargo handling system. For example, regarding each device,
16342. 59-16346, 59-16374
．． Publications No. 59-16348 and JP-A No. 57-145719 and No. 57-164321 regarding the speed control method
There are various publications.

[Problems to be Solved by the Invention] There are the above pressurization methods for transporting capsules, but they all have the following problems.

(b) F-bypass/double gate valve system This method has the advantage of ensuring reliable operation because the capsule spacing is maintained above a certain level, but the biggest drawback is that the capsule spacing is It is necessary to provide air bypasses at shorter intervals. The length of the factory bypass is capsule speed 10m.
/S, designed with rolling resistance coefficient p = 0.005 [i
It is almost impossible to create such a long horizontal section due to the land situation of our country, so the air bypass has no choice but to have a gate valve installed in the main pipe.In this case, the bypass section The length of is approximately 200 m in a system with main pipe φ1 m, capsule weight W = 9000 kg, and leakage rate ψ = 0.03 (characteristic value for evaluating sealing performance). Although it is not impossible to take horizontal sections of this length, it is extremely difficult to take them at short intervals. This means increasing the number of capsules in order to secure a certain amount of transportation.For example, in a system with a woodwind diameter of 1 m, the capsule speed is 8 m/s, and the number of capsules is approximately 15 cars. If the capsules are formed into a long formation like this, it will be difficult to brake and launch at the station, and the loading and unloading equipment will also be large, making it less practical in terms of cost.

(b) Flap valve method This method has the advantage of not requiring any valve operations, but there is a high risk of causing trouble when Siltem is stopped due to a power outage, etc. In other words, there are unavoidable ups and downs on the transportation route. Therefore, if there is a slope on the downstream side of this booster, when the system stops and the airflow in the pipe disappears, the capsule will start flowing backwards and collide with the flap valve from the right. This valve has a structure that avoids collisions when the capsule enters from the left, but it has no defense against capsule entry from the right, leading to damage to the valve or capsule. In order to prevent this, a sufficient distance must be provided between the uphill section and the booster.
It is generally difficult to satisfy such restrictions in our country.

(c) Jet pump type This type has low pressure boosting efficiency, and requires a large number of boosting devices with short installation intervals of less than 1 km, so it is unlikely to be practical in terms of cost.

(d) Continuous cargo handling device diversion method This method solves the problems of the three methods mentioned above, but it is extremely difficult to put it to practical use because it requires a large space in the intermediate pressurizing section. That is, since the firing tube is generally swung by a cylinder around one point, the rotation angle is restricted. Even if this angle is possible up to 90°, the radius of curvature of the pipeline is 40D to 1000 (D:
Since the pipe inner diameter is generally around 700, the shape of the pipeline centered on the launch tube is as shown in Figure 9, and D
=1m requires an area of approximately 20m x 100m. On the other hand, if the launcher is made into a rotary mechanism that rotates nearly 180", the required time will be longer and this will be a major constraint on adoption. For example, in a pipeline with φ = 1m, if the launcher is 15m long, the loading capsule will be inside. Approximately 15 when entering
tons and must be reversed in less than 10 seconds.

In order to solve these various problems, the present invention allows for free design without being restricted by the spacing between capsules, the number of capsules to be formed, or the weight of capsules.

In addition, it is possible to prevent troubles during system power outages, can be installed in a straight line on any route, occupies an area approximately twice the pipe diameter, and has extremely high pressurization efficiency. is intended to provide.

[Means for Solving the Problems] The present invention for solving the above-mentioned problems decelerates the capsule to a predetermined speed in the braking zone of the transportation route, and causes the following capsule to collide with the leading capsule using an automatic coupling device. The connected capsules are conveyed forward by a conveyance device, the connection of the leading capsule is released from the conveyed connected capsule by a decoupling device, and the pressure of the leading capsule after the connection is released is increased by a booster firing device. The booster launcher is configured to fire at an upstream gate valve and a downstream gate valve provided in the launch transportation path downstream from the disconnection device, and near the downstream gate valve from the upstream gate valve. an air suction blowing section arranged in communication with the transport passage for air transport, and an air blowing and ejection part arranged in communication with the transport passage for firing in the vicinity of the downstream side of the downstream gate valve; With the valve open and the downstream gate valve closed, air is sucked through the suction blowing section and the uncoupled head capsule is sucked and transferred downstream from the suction blowing section, and then the upstream gate valve is closed and the downstream gate valve is closed. With the valve open, air is blown from the suction blowing section to force-feed the leading capsule downstream from the blowing and firing section, and then, with the downstream gate valve closed, air is blown from the blowing and firing section to fire the leading capsule. The configuration is such that

[Operation] In the present invention, a capsule that has been decelerated to a low speed in a braking zone of a transportation route is connected to a preceding capsule, the connected capsule is transported at a predetermined speed by a conveyance device, and after being released by a disconnection device, each capsule is operated by a valve. Since this method is used to boost the pressure and launch the capsule, it does not require a long horizontal distance like the air bypass/double gate valve method, and also requires a long capsule and large equipment to control the speed of the capsule and the capsule gap. It is also applicable to short capsules.

In addition, with the flap valve system, if there is a gradient downstream of the flap valve during a power outage, the capsule may cause backflow and collide with the valve, but in the present invention, each valve of the booster launcher during a power outage is operated as described below. The proper position prevents the capsule from flowing backwards or colliding with the enemy.

On the other hand, in the present invention, since the booster is arranged in a straight line, it does not require a large area like a switchbatter type launcher that uses continuous cargo handling equipment, and can be installed not only in a straight line but also on any route. The occupied width can be approximately twice the diameter of the tube, and a blower with normal specifications can be used for boosting and launching the capsule, allowing efficient boosting and launching.

[Specific examples of the invention] Further, one aspect of the present invention will be explained in detail.

FIG. 1 is a schematic diagram of the vicinity of an intermediate pressurizing section in a capsule transportation path showing an embodiment of the present invention. The capsule 1d travels to the right in the figure within the transport path z due to airflow from a transport blower (not shown). An automatic coupling device 3 is provided before and after the capsule 1d. An appropriate number of capsules lc are always waiting at the terminal end of the transport path 2 downstream from below the braking zone from the exhaust port A of the transport path 2 to the mounting portion B of the control valve 6. On the other hand, when the following capsule ld runs,
As the transport path 2 is sealed by the presence of the standby capsule lc as it travels, the pressure generated by compressing the air between the capsules lc and ld acts as a braking force on the capsule 1d, and the braking pressure is transferred to the control valve 6. By controlling this, the capsule ld collides with the standby capsule lc at a speed below a certain speed and is connected to the waiting capsule lc. On the other hand, the capsule ib is transported by the transport device 4, so that the capsules la, lc connected thereto also move. Leading capsule la and capsule l
When the connecting portion with b reaches the disconnecting portion C, the disconnecting device 5 releases the connection.

On the other hand, the transport path 2 is interrupted at a portion of the transport device 4 and the connection release device 5, and a firing transport path 2° is piped on the downstream side thereof. At the base end of this transport path 2', a boosting and firing device as described below is provided. That is, upstream and downstream gate valves 7 and 8 are provided on the upstream and downstream sides of the transportation path 2', respectively, and a suction blowing section and a blowing ejection section E are provided on the downstream side adjacent to these gate valves. It is open and communicates with '. 12 is a suction blower, and 13 is a main blower. 14 is a suction blowing pipe, 15 is a suction pipe, and a switching valve 11 is provided in the middle thereof. Reference numeral 16 denotes a blow-in launch tube, which has a switching valve 9 in its middle. 17 is a blowing pipe, 18 is a connecting pipe, and has a switching valve 10.

Now, in a facility equipped with such a boost launcher, after the aforementioned connection is released, the leading capsule la is
Perform the movement shown in C). First, as shown in Figure (L), gate valve 7 is opened and gate valve 8 is closed, valve i1 is opened, and air is sucked from the suction blower 12 by suction blower 12. As a result, the leading capsule la is suction-transferred to the downstream side from the suction blowing section. When the capsule la passes through the suction blowing section, the gate valve 8 is closed, and as the capsule la moves to the right, the air between them is compressed and acts as a braking force on the capsule la. is stopped between the suction blowing part and the gate valve 8. Next, the gate valve 7 is closed and the gate valve 8 is open, and the air is pumped from the main blower 13 with the valve lO opened and the valve 9 closed. Then, air is blown from the suction blowing section to transport the leading capsule 1a to the downstream side of the blowing and firing section E, as shown in FIG. Thereafter, the gate valve 8 is closed, the valve 10 is closed, and the valve 9 is opened, and air is blown from the blowing and firing part E by the main blower 13, and the capsule 1a is pressurized and fired by the airflow flowing to the right in the transport path 2'. do. At the same time, the device waits for the subsequent capsule lb to be uncoupled, and thereafter such operations are performed sequentially.

Here, the transport device 4 always transports the capsule to the right at a constant speed, but if the capsule is transported a certain distance fLo from the uncoupling point C.
If the gate valve 7 is not in the open (standby) state even when it reaches this side, the capsule is immediately stopped and waits for it to be in that state.

By the way, the suction blower 12 can be eliminated and the main blower 13 alone can be operated as shown in FIG. That is, a suction blowing pipe 14 with a valve 11 provided in the middle
is connected to the suction side of the main proar 13, the blowing pipe 17 of the main proar 13 is branched in the middle, one is directly connected to the blowing ejection part E, and the other connecting pipe 1B is connected to the suction blowing pipe 14. This performs the suction and blowing operations shown by the arrows in the figure. Here, since the speed of suction and transfer of the capsule may be slower than the feeding speed of the capsule in the transport path, the amount of air sucked from the suction and blowing section may be smaller than the amount of air blown from the blowing and ejecting section E, so the valve 19 is provided. The valve 19 can be provided with a stopper so that it can be opened to a certain degree even when the actuator is closed, or a throttle 20 can be installed in parallel with the valve 19 as shown in Fig. 4 so that the throttle 20 remains open even when the valve 19 is closed. The suction may also be made possible through piping.

Next, we will discuss safety during power outages. In the embodiments described above, safety can be ensured by taking the measures described below. Since the gate valves 7 and 8 can normally maintain their previous state even when the power is turned off, the valves 9 and 8 in FIG.
, 10, 11 should be set to close when the power is off. This can be done, for example, by making these valves air-driven and setting the solenoid valves to meet the above purpose. As mentioned above, the gate valve7. Since both gate valves 8 will not be opened at the same time, valves 9 and 8 will not open at the same time.
10. If 11 is closed, the transport path 2° to the right of gate valve 8
Then the air flow stops. In this state, even if the capsule runs backwards in the transport path 2゜ to the right of the booster due to the pipe slope,
As long as there is no steep slope near the downstream side of the gate valve 2, the capsule will stop quickly or the reverse speed will be extremely low, and safety will be maintained without colliding with the gate valve.

In the example shown in FIG. 1, there is a single suction blowing section, but this is arranged in parallel and close to the suction pipe and the blowing pipe,
The suction pipe may be connected to the suction blower 12, and the blowing pipe may be connected to the main blower 13.Also, in the above example, the connection, transport, release, and firing of the capsule are performed for each unit, but it may be possible to connect the capsules for each unit, You can also do this.

[Effects of the Invention] As described above, according to the present invention, the capsule has a braking zone,
Since the capsules are transferred via a conveying device and a uncoupling device, they can be designed freely regardless of the number of capsule sites or their weight, and there is no need for complicated operations to control the capsule spacing.
Furthermore, troubles in the event of a power outage can be prevented by operating the respective valves installed on the booster launcher.On the other hand, these devices can be placed linearly on any route, and the area occupied is only two times the diameter of the transport pipe. It only needs to be about twice as much, and it has high boosting efficiency because a normal blower can be used for boosting and firing.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment according to the present invention, and FIG. 2 (L
) to (C) are explanatory diagrams of capsule movement in the pressurized ejection device part according to the present invention, FIGS. 3 and 4 are flow diagrams of other examples of air suction and blowing, and FIGS. 5 (a) to (f), 6th
Figures (JL) to (f), Figures 7 and 8 are schematic diagrams showing the intermediate pressurization method according to the conventional method, and Figure 9 is a diagram of the transport route near the launcher in the conventional method, which is a type that utilizes continuous cargo handling equipment. be. la, lb, lc, ld,... Capsule 2...
Transport route 2”, .60 launch transport route 3,,,,
Automatic coupling device 4゜60. Conveying device 5. ,, Uncoupling device 6°. . , control valve 7, , upstream gate valve
80. . , downstream gate valve 9.10, 11, 19. ,,
, switching valve 12.13. . 0. Bloor D. . . , suction blowing section E,
,,,, Blow-in discharge part Patent applicant: Sumitomo Metal Industries, Ltd. Figure 5 Figure 7/Lljj;'ノFigure 6

Claims (1)

[Claims] (1) The capsule is decelerated to a predetermined speed in the braking zone of the transportation route, the following capsule is caused to collide with the leading capsule by an automatic coupling device, and the coupled capsule is coupled to the leading capsule.The coupled capsule is transported forward by the transportation device, and the capsule is transported. The first capsule is uncoupled from the first capsule by a coupling release device, and then the top capsule after the coupling is released is pressurized and launched by a boost firing device; an upstream gate valve and a downstream gate valve provided on the side launch transportation route; an air blowing and firing section disposed in communication with the discharge transportation path in the vicinity of the downstream side of the side gate valve, and when the upstream side gate valve is open and the downstream side gate valve is closed, The air is suctioned and the leading capsule to be disconnected is transferred to the downstream side from the suction blowing part, and then, with the upstream gate valve closed and the downstream gate valve open, air is blown from the suction blowing part to remove the leading capsule. 1. An intermediate pressurization method for transporting a capsule, the method comprising pressure-feeding the capsule to the downstream side from a blowing and firing section, and then blowing air from the blowing and firing section with a downstream side gate valve closed to cause the leading capsule to be fired.