Inflation sealed gate valve and vacuum pipeline with same

Abstract

The invention discloses an inflatable sealed gate valve and a vacuum pipeline with the same. The gate valve comprises a gate valve outer frame, a gate plate and a gate plate driving device, wherein the upper end of the gate plate driving device is fixedly arranged at the top of the gate valve outer frame, the lower end of the gate plate driving device is fixedly connected with the gate plate, upward and downward movement of the gate plate corresponds to opening and closing of the gate valve, longitudinal sealing belts matched with a pipeline section are arranged on the front side and the rear side of the upper portion of the gate plate, vertical sealing belts and lateral sealing belts matched with a rail section are arranged on the bottom side, the left side and the right side of the lower portion of the gate plate, inflatable cavities are formed in the longitudinal sealing belts, the vertical sealing belts and the lateral sealing belts, and the cavities are externally connected with inflation pipelines. According to the scheme of the gate valve, reliable sealing can be achieved under the condition that a lower rail is not disconnected, and the running stability and safe running of a vehicle are guaranteed.

Description

Technical field [0001] The present invention belongs to the field of magnetic levitation traffic systems, and more particularly to a pneumatic shutter valve of an inflated sealed, and a vacuum pipe having the shutter valve. Background technique [0002] In order to reduce the air resistance at high speed of the vehicle, the vehicle is placed in the vacuum conduit. See figure 1 and figure 2 Design, a lower portion of a conventionally disclosed vacuum conduit 100 is a rail operated by a vehicle, and an electrical coil 102 is attached to the side wall 101 of the track provides a suspending force and a guide for the vehicle, and there is a supply on the bottom 103 of the track. Support wheel walking rail 104. [0003] During the actual use of the vacuum pipeline, it is necessary to use a gate valve to divide the vacuum pipe into several sections. If the trail is repaired or the train is required to evacuate in a certain section, it will be The shutter valve at both ends of the sectio...

AI Technical Summary

Problems solved by technology

And the concrete track part of the bottom not only forms the vacuum pipe chamber together with the upper metal pipe, but also the track for the train to travel. Electric coils 102 are installed on its side wall, and the rail bottom is provided with a supporting wheel-rail surface, so in the vacuum pipe. The electrical coil and the supporting wheel-rail surface are also disconnected and discontinuous at the disconnection (see Figure 4), it not only affects the stability and comfort of train operation, but may also cause hidden dangers in driving

[0014]2) The existing gate valve structure is not equipped with "failure-oriented safety" device and closed state locking device

When the opening and closing mechanism of the gate 203 breaks down, or power failure, gas failure, etc., the gate may fall under its own gravity, thereby colliding with a high-speed train, and there are many gate valves along the vacuum pipeline. , so this security risk cannot be ignored;

[0015]3) The existing gate valve structure does not have a mechanical locking mechanism for the open state of the gate valve

When it is necessary to overhaul a certain section of the vacuum pipeline, close the gate valves at both ends of the section, restore an atmospheric pressure, and then enter the section to carry out work. The expansion and contraction of the gate valves on both sides of the section cannot be ruled out. If the cylinder is opened due to air leakage, human misoperation or other reasons, then this section is instantly connected to the vacuum environment on both sides, causing great safety hazards to the staff entering the recompression section for maintenance work

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