CN108150663B

CN108150663B - Vacuum pipeline gate

Info

Publication number: CN108150663B
Application number: CN201810024807.7A
Authority: CN
Inventors: 张跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2021-11-02
Anticipated expiration: 2038-01-11
Also published as: CN108150663A

Abstract

The invention provides a vacuum pipeline gate which comprises a gate shell and a gate plate arranged in the gate shell, wherein the inner cavity of the gate shell is communicated with a pipeline, a gap is formed between the gate plate and the gate shell, sealing gaskets are arranged on two end surfaces of the gate plate, and the gate plate deflects through pressure difference acting on the two end surfaces of the gate plate and seals the pipeline. The gate has the capability of automatically sealing or unsealing the vacuum pipeline on one side according to pressure change, and has high safety coefficient and good sealing effect.

Description

Vacuum pipeline gate

Technical Field

The invention relates to the technical field of vacuum pipelines, in particular to a vacuum pipeline gate.

Background

The vacuum pipeline is internally in a vacuum environment, in the actual production process, the longer vacuum pipeline is formed by connecting a plurality of sections of segmented vacuum pipelines, the vacuum pipeline gate is arranged at the joint of the plurality of sections of vacuum pipelines and separates the two sections of vacuum pipelines through the gate, and the single-section vacuum pipeline is convenient to overhaul, maintain or otherwise operate.

The existing vacuum pipeline gate is driven by a lifting mechanism to lift and directly close, and mainly has the following defects: (1) the gate is attached to the closed pipeline through mechanical driving, the driving acting force is large, and the opening is difficult; (2) there is not horizontal clearance between floodgate shell and the flashboard, and the flashboard motion in-process produces great frictional force with the floodgate shell, and the flashboard is easy wearing and tearing to reduce sealed effect and security performance, reduce life.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the vacuum pipeline gate, the inner cavity of the vacuum pipeline gate is communicated with a vacuum pipeline, the gate moves and seals the pipeline in a vacuum environment, the operation is convenient, the friction force is small, the loss is not easy, the sealing effect is good, and the random sealing of the pipelines on the two sides of the gate can be realized.

The technical scheme of the invention is as follows: a vacuum pipeline gate comprises a gate shell and a gate plate arranged in the gate shell; the inner cavity of the brake shell is communicated with the pipeline, the pressure intensity of the inner cavity of the brake shell is the same as the pressure intensity in one side of the pipeline, and when the pipeline is communicated, the pressure intensity of the inner cavity of the brake shell is smaller than the atmospheric pressure.

The vacuum pipeline of the invention is composed of a plurality of sections, the brake shell is arranged at the joint of two adjacent sections of pipelines, the lower section of the brake shell is hollow and annular, the inner diameter of the lower section of the brake shell is matched with the inner diameter of the pipeline, and the upper section of the brake shell extends upwards relative to the vacuum pipeline; the flashboard is arranged in the brake shell, the diameter of the flashboard is larger than the inner diameter of the lower section of the brake shell, and the flashboard relatively moves in the brake shell to penetrate through the two sections of vacuum pipelines or close the vacuum pipeline on one side; when the flashboard is positioned at the upper section of the brake shell, the pipeline is communicated; when the flashboard descends to the lower part of the brake shell and presses one side of the lower section of the brake shell, the vacuum pipeline on the side is sealed and closed.

Furthermore, a gap is formed between the flashboard and the brake shell, sealing gaskets are arranged on two end faces of the flashboard, and double sealing is realized by the deviation of pressure difference acting on the two end faces of the flashboard.

The gap can facilitate the relative movement of the flashboard in the brake shell, effectively avoid the friction between the flashboard and the brake shell, and simultaneously, sealing gaskets matched with the end surfaces of the brake shells at two sides of the flashboard are arranged on the two end surfaces of the flashboard; when a pipeline is plugged, the flashboard is firstly lowered to the lower section of the brake shell, and at the moment, both sides of the flashboard are not in contact with the brake shell; opening an air inlet vent valve on the vacuum pipeline on one side to inject air into the vacuum pipeline on one side, so that the pressure difference of the vacuum pipelines on the two sides changes, and the flashboard is pushed by the pressure of the pipeline on the high pressure side, moves to the low pressure side and is tightly attached and sealed with the side flashboard shell through a sealing gasket; when the high-pressure side pipeline is vacuumized, the air pressure is reduced to the condition that the pipelines on the two sides are the same again, the flashboard automatically moves to the middle part of the lower section of the flashboard under the action of self gravity and moves upwards to the upper section of the flashboard, and the pipelines on the two sides are communicated again.

The sealing washer that the same terminal surface of flashboard set up can be one deck or multilayer, and its preferred sets up to two-layer, and sealed effect is better, and can effectively prevent to descend because of the sealed effect that reasons such as the ageing or damage of individual layer sealing washer arouse.

Further, the lateral wall of flashboard is equipped with the guide bar, is equipped with the guide way on the floodgate shell.

The guide rods can be pulleys, fixed ends, balls or any other devices capable of sliding relatively in the sliding grooves, and are arranged on the side walls and can be one group or multiple groups distributed symmetrically.

Further, the width of the bottom of the guide groove is increased, and the guide rod can horizontally move at the bottom of the guide groove.

When the flashboard descends to the floodgate shell hypomere, guide bar relative movement to guide way bottom, under the condition that pipeline both sides atmospheric pressure changes, the flashboard is by moving to floodgate shell one side, and guide way bottom width increases, and its width that increases is adapted to the horizontal distance scope of flashboard lateral deviation to one side floodgate shell motion, makes the bottom of guide way play the effect of lateral guidance to the guide bar to ensure the accurate sealed pipeline of flashboard lateral deviation in-process.

Further, the vacuum line gate further comprises an auxiliary displacement device.

In the pipeline closing process, when the flashboard descends to the lower section of the brake shell, a gap is formed between the flashboard and the brake shell, in the process of injecting gas into the pipeline on one side through the vent valve, part of gas can enter the vacuum pipeline on the other side of the flashboard through the gap between the flashboard and the brake shell, so that the vacuum degree of the vacuum pipeline on the other side is influenced.

Aerify the side pipeline evacuation back again, the flashboard is put to dead weight action time return to floodgate shell inner chamber central point again, but pressure differential is too big before, and under the too inseparable condition of seal ring laminating, because seal ring's laminating resultant force, the flashboard can't independently return, or flashboard seal ring is not hard up and the return is consuming time longer, through supplementary displacement device, gives the flashboard towards the supplementary thrust that floodgate shell central point put the removal, makes the flashboard can quick effectual return.

The auxiliary displacement device can be a device which is provided with a motor to drive a push rod to push the flashboard to move, the push rod can be arranged at the bottom of the guide groove to push the push guide rod to move, and the auxiliary displacement device can also be a device which is arranged on the brake shell to push two end faces of the flashboard to move, or can be arranged at other positions to assist the flashboard to move towards the opposite face of the flashboard.

Furthermore, a lifting mechanism for controlling the gate to move up and down is arranged in the gate shell and is connected with the gate plate through a rope.

The lifting mechanism is arranged at the top of the inner cavity of the brake shell and is fixed in the inner cavity of the brake shell through a fixing frame arranged in the brake shell, so that the lifting mechanism and the flashboard are completely sealed in the pipeline closed space; the gate is lifted or lowered by a line, which may be a sling, rope or other flexible connection structure, to accommodate the bottom-out deflection of the gate.

Further, the lifting mechanism can be one or more of a winch, a hydraulic lifter, an electric lifter or a hinge machine.

Further, the top of the brake shell is provided with a detachable top cover.

The top cover and the brake shell are detachably sealed through the flange face, the top cover can be a bulge with the flange face, and the bulge is provided with a lifting mechanism, so that materials are saved.

Furthermore, the rope is one or more, and a plurality of ropes are located on the same plane.

When many ropes, the stability and the nature of multiplicable flashboard in the in-process of lifting by crane, many ropes along lifting by crane central symmetry, and many ropes need be located flashboard central end face and correspond the circumference, ensure that the setting of rope position does not influence the lateral shifting process of flashboard in the brake housing bottom.

Further, the vacuum pipeline gate further comprises a reset detection sensor.

Reset sensor sets up in the floodgate shell, the change of response flashboard position, the flashboard is close to and pastes tight one side floodgate shell, close this side pipeline, overhaul the opposite side pipeline, shift or other back of handling, the both sides pipeline need link up once more, the opposite side pipeline replies the vacuum, both sides pipeline pressure is the same, the flashboard replies to floodgate shell inner chamber central point and puts, the change of monitoring sensor monitoring and response flashboard position that resets, if the flashboard does not reply to central point and puts, then reset monitoring sensor sends corresponding signal, elevating system can't hoist the flashboard and withdraw, the flashboard replies behind the central point, elevating system could hoist the flashboard.

Furthermore, be provided with manual safety pin and electronic or electromagnetism safety pin on the floodgate shell, prevent that the flashboard accident from falling.

The brake shell is provided with the safety pin for the part that the vacuum tube stretches out, and the back is hoisted through elevating system to the flashboard, and the safety pin stretches out, and the block is in the flashboard lower part, prevents that the flashboard from appearing falling the influence pipeline normal operating unusually. The electric or electromagnetic safety pin ensures the safety of the equipment under the condition of power-on, and the purpose is realized by the additional manual safety pin under the condition of power-off.

The invention has the beneficial effects that: (1) a gap is formed between the flashboard and the brake shell, so that the movement of the flashboard is smoother, and the abrasion of the end surface of the flashboard and the brake shell is reduced; (2) the flashboard realizes the deviation through the pressure difference of the pipeline environments at the two sides, the pipeline is automatically locked and closed, the pressure difference of the pipelines at the two sides is gradually reduced and tends to be balanced, and the flashboard automatically returns to the central position under the action of the gravity of the flashboard, so that the self-sealing and self-opening of the pipeline are realized; (3) the width of the bottom of the guide groove is increased, and the guide of the guide rod in the process of the deviation of the flashboard is matched; (4) the lifting mechanism and the flashboard are connected through a rope, and the flexible rope realizes the lifting of the flashboard and the offset of the bottom of the flashboard; (5) the upper part of the gate plate is provided with the detachable top cover, and the lifting mechanism is arranged in the top cover, so that the sealing problem of the gate in the use process is effectively solved, and meanwhile, the lifting mechanism, the gate plate, the gate shell and the like are convenient to overhaul and maintain; (6) the auxiliary displacement device assists the deviation and return of the flashboard, and the reset monitoring sensor monitors the position condition of the flashboard, so that the lifting work of the lifting mechanism before the flashboard returns to the central position is effectively avoided; (7) through establishing the safety pin additional, effectively prevent that the flashboard accident from falling and arousing the incident.

Drawings

FIG. 1 is a front view of the structure of embodiment 1 of the present invention;

FIG. 2 is a left side sectional view of FIG. 1;

FIG. 3 is an enlarged schematic view of the bottom of the guide slot of FIG. 1;

FIG. 4 is an enlarged schematic view of the bottom of the gate of FIG. 1;

FIG. 5 is an enlarged top view of the brake shell according to embodiment 5 of the present invention;

FIG. 6 is a top view of the gate of FIG. 5;

fig. 7 is an enlarged view of the lower portion of the guide groove of fig. 6.

In the figure: 1-winch, 1-lifting rope, 1-2-top cover, 2-brake shell, 2-1-brake shell upper section, 2-2 brake shell lower section, 3-flashboard, 4-guide groove, 5-pulley, 6-pipeline, 7-sealing washer, 8-manual safety pin, 9-electromagnetic safety pin, 10-auxiliary displacement device.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.

Example 1

A vacuum pipeline 6 gate is arranged at the joint of a plurality of sections of vacuum pipelines 6 and comprises a gate shell 2 and a gate plate 3 arranged in the gate shell 2, the inner cavity of the gate shell 2 is communicated with two adjacent sections of vacuum pipelines 6, and the gate shell 2 comprises a gate shell lower section 2-2 communicated with the pipelines 6 and a gate shell upper section 2-1 extending upwards relative to the pipelines 6. The top of the brake shell 2 is provided with a fixed frame, the winch 1 is arranged on the fixed frame, is connected with the flashboard 3 through the lifting rope 1-1 and drives the flashboard 3 to move in the brake shell 2 along the vertical direction.

A gap is reserved between the brake shell 2 and the brake plate 3, a guide groove 4 is formed in the inner cavity of the brake shell 2, the width of the bottom of the guide groove 4 is increased, the increased width is suitable for the deviation range of the brake plate 3 at the lower section 2-2 of the brake shell, a pulley 5 corresponding to the brake plate 3 is arranged on the brake plate 3, the brake plate 3 is guided through the cooperation of the pulley 5 and the guide groove 4, and sealing gaskets 7 corresponding to the lower section 2-2 of the brake shell are arranged on two end faces of the brake plate 3.

The operation method of the gate comprises the following steps:

s1: when the pipeline 6 needs to be plugged, the winch 1 drives the lifting rope 1-1 to slowly lower the gate plate 3, and at the moment, both sides of the gate plate 3 are not in contact with the gate shell 2;

s2: opening a vent valve on the pipeline 6 at one side to inject gas, so that the pressure in the pipeline 6 at the side of the flashboard 3 is increased, the increased atmospheric pressure enables the flashboard 3 to move towards the pipeline 6 at the other side under stress, the end surface of the flashboard 3 at the other side is attached to the surface corresponding to the brake shell 2, a sealing ring is pressed, and the pipeline 6 is blocked;

s3: closing the vent valve, and performing operations such as maintenance, channel moving and the like on the pipeline 6;

s4: after the operation is finished, vacuumizing the pipeline 6 at the inflatable section to reduce the pressure difference at two sides of the flashboard 3, separating the flashboard 3 from the brake shell 2 under the action of self gravity, and returning to the central position of the inner cavity of the brake shell;

s, 6: after the flashboard 3 returns to reset, the hoisting machine 1 lifts the lifting rope 1-1 to lift the flashboard 3 to the top end of the brake shell 2, and the pipeline 6 is communicated again.

Example 2

The only difference from example 1 is: the top of the brake shell 2 is provided with a detachable top cover 1-2, and the detachable top cover 1-2 is connected with the brake shell 2 through a flange and a bolt to form a sealed integral structure.

Example 3

The only difference from example 1 or 2 is that: the part 2-1 of the upper section of the gate shell extending out of the pipeline 6 is provided with an electric safety pin, so that accidental breakage of a rope or accidental falling of the gate plate 3 is prevented, and the safety of the gate in the use process is improved.

Example 4

The only difference from example 1 or 2 is that: the part of the upper section 2-1 of the brake shell extending out of the pipeline 6 is provided with a manual safety pin 8 and an electromagnetic safety pin 9.

Example 5

On the basis of the embodiment 4, the lower section 2-2 of the brake shell is provided with an auxiliary displacement device 10.

Example 6

On the basis of the embodiment 5, the inner cavity of the brake shell 2 is also provided with a reset detection sensor.

The operation method of the gate comprises the following steps:

s1: when the pipeline 6 needs to be plugged, the manual safety pin 8 and the electromagnetic safety pin 9 retract, the winch 1 drives the lifting rope 1-1 to slowly lower the gate plate 3, and at the moment, both sides of the gate plate 3 are not in contact with the gate shell 2;

s2: when the flashboard 3 is lowered to the bottom, the auxiliary displacement device 10 is started to apply thrust to the side, needing to be plugged, of the flashboard 3, so that a sealing ring on the flashboard 3 is in contact with the brake shell 2, and a gap is reduced;

s3: opening a vent valve on the pipeline 6 on the other side to inject gas, so that the pressure in the pipeline 6 on the other side of the flashboard 3 is increased, and the increased atmospheric pressure enables the flashboard 3 to move towards the low-pressure end, namely the side of the end to be blocked, so as to further compress the sealing ring and block the pipeline 6;

s4: closing the vent valve, and performing operations such as maintenance, channel moving and the like on the pipeline 6;

s5: after the operation is finished, vacuumizing the pipeline 6 at the inflatable section to reduce the pressure difference between two sides of the flashboard 3, returning the flashboard 3 to the central position of the brake shell 2 under the action of self gravity, if a sealing ring on the flashboard 3 is tightly attached to the brake shell 2 and cannot be separated from the reset in time, starting the auxiliary displacement device 10 again, and boosting to push the flashboard 3 to move towards the central position of the brake shell 2 so as to separate the flashboard 3 from the brake shell 2;

s, 6: after the flashboard 3 returns to reset, the reset detection sensor responds to allow the winch 1 to lift the lifting rope 1-1, the flashboard 3 is lifted to the top end of the brake shell 2, and the pipeline 6 is communicated again;

s7: the manual safety pin 8 and the electromagnetic safety pin 9 extend to assist in fixing the shutter 3.

Claims

1. A vacuum pipeline gate comprises a gate shell and a gate plate arranged in the gate shell; the method is characterized in that: the gate shell is arranged at the joint of two adjacent sections of pipelines, the inner cavity of the gate shell is communicated with the pipelines, the gate shell comprises a lower gate shell section communicated with the pipelines and an upper gate shell section which extends upwards relative to the pipelines, and the gate plate can move in the gate shell along the vertical direction; a gap is formed between the flashboard and the brake shell; the side wall of the flashboard is provided with a guide rod, and the brake shell is provided with a guide groove; the width of the bottom of the guide groove is increased, so that the guide rod can horizontally move at the bottom of the guide groove; a ventilation valve is arranged on the pipeline; the pressure intensity of the inner cavity of the brake shell is the same as the pressure intensity in one side of the pipeline, and when the pipeline is communicated, the pressure intensity of the inner cavity of the brake shell is smaller than the atmospheric pressure; the flashboard is shifted through the pressure difference of the pipeline environments at the two sides, automatically moves towards the pipeline at the low-pressure end and closes the pipeline, and automatically returns to the central position under the action of self gravity after the pressure difference of the pipelines at the two sides is gradually reduced and tends to be balanced; the vacuum pipe gate further comprises an auxiliary displacement device.

2. The vacuum duct gate of claim 1, wherein: and sealing gaskets are arranged on two end faces of the flashboard, and double sealing is realized by the deviation of pressure difference acting on the two end faces of the flashboard.

3. The vacuum duct gate of claim 1 or 2, wherein: and a lifting mechanism for controlling the gate to move up and down is arranged in the gate shell and is connected with the gate plate through a rope.

4. The vacuum duct gate of claim 3, wherein: the lifting mechanism is one of a winch, a hydraulic lifter, an electric lifter or a hinge machine.

5. The vacuum duct gate of claim 3, wherein: the top of the brake shell is provided with a detachable top cover.

6. The vacuum duct gate of claim 3, wherein: the rope is one or more, and a plurality of ropes are located the coplanar.

7. The vacuum duct gate of claim 1 or 2, wherein: the vacuum pipeline gate further comprises a reset detection sensor.

8. The vacuum duct gate of claim 1 or 2, wherein: be provided with manual safety pin and electronic or electromagnetism safety pin on the floodgate shell, prevent that the flashboard accident from falling.