阅读说明：本技术 超高真空磁浮管道的超高真空制取方法 (Ultrahigh vacuum preparation method of ultrahigh vacuum magnetic suspension pipeline ) 是由 不公告发明人 于 2021-06-04 设计创作，主要内容包括：将整条磁浮管道每两百公里建一道密闭闸门,在整条磁浮管道内每一百米焊一根水管与管外水管相通。铺一段八十米长的管状优质气囊两端各拉长十米用磁条将管状气囊的端部卡在预设的卡槽内,管状气囊紧贴在4毫米深一米宽的槽内,整个管状气囊平磁浮管底部平面,管状气囊的中央设与水管卡环联接的卡扣,经重力将卡扣压下抓紧卡环,用优质高压密闭圈将其无缝联接。弄好一切准备工作,经十个抽注水站向两百公里长的磁浮管的管状气囊同时注水,注水量大约是450万立方米,压力达0.15兆帕后,排出第一磁浮管里的空气,再将水用多级水泵注入相邻第二磁浮管道的管状气囊里,水压达0.15兆帕时,将第二磁浮管里的空气排出,这样反复五次就能将这两条两百公里的磁浮管道制成超高真空,管内的气压是常压的几百亿分之一,设每次余气是百分之一,经计算可得,整个磁浮管的管状气囊用后不必拆出,留在磁浮管道内,若有漏气,两端闸门一关,可随时启用排气。(A closed gate is built every two hundred kilometers for the whole magnetic suspension pipeline, and one water pipe is welded in each hundred kilometers of the whole magnetic suspension pipeline and is communicated with a water pipe outside the pipe. The method is characterized in that a section of eighty-meter-long tubular high-quality air bag is laid at two ends of each high-quality air bag, the two ends of each high-quality air bag are respectively elongated for ten meters, the end parts of the tubular air bags are clamped in preset clamping grooves by magnetic stripes, the tubular air bags are tightly attached to grooves with the depth of 4 millimeters and the width of one meter, the whole tubular air bag is flatly floated on the bottom plane of a magnetic floating pipe, a buckle connected with a water pipe clamp ring is arranged in the center of each tubular air bag, the buckle is pressed down by gravity to tightly grasp the clamp ring, and the clamp ring is connected in a seamless mode by a high-quality high-pressure sealing ring. After ten water pumping and injecting stations are used, water is simultaneously injected into the tubular air bags of the magnetic floating pipes with the length of two hundred kilometers, the water injection amount is about 450 ten thousand cubic meters, after the pressure reaches 0.15 MPa, the air in the first magnetic floating pipe is discharged, then the water is injected into the tubular air bags of the adjacent second magnetic floating pipelines by using a multistage water pump, when the water pressure reaches 0.15 MPa, the air in the second magnetic floating pipe is discharged, the two magnetic floating pipelines with the length of two hundred kilometers can be made into ultrahigh vacuum by repeating for five times, the air pressure in the pipes is one hundred million parts of the normal pressure, the residual air in each time is one percent, the tubular air bags of the whole magnetic floating pipes are not required to be detached after use and are left in the magnetic floating pipelines, and if air leaks exist, the gates at two ends are closed, the air exhaust can be started at any time.)

1. A method for making vacuum by using water-filling air bag to discharge air is disclosed.

2. The method for preparing ultrahigh vacuum by repeatedly discharging air by using water injection air bags.

The technical field is as follows:

the invention belongs to the technical field of ultrahigh vacuum preparation of an ultrahigh vacuum magnetic suspension pipeline.

Background art:

at present, few countries for researching the ultrahigh vacuum magnetic suspension pipeline are in the world, and the countries are still in the test stage.

The invention content is as follows:

the present invention relates to a method for exhausting air by filling water into high-quality air bag, and is characterized by that the air in the space environment to be vacuumed can be squeezed out of said space environment by means of water-filling air bag. The water in the air bag is pumped out, and the air bag forms a vacuum environment after being contracted. The method is suitable for vacuum preparation in non-obstacle environment and vacuum preparation in obstacle environment, and is suitable for several times of pumping and exhausting in obstacle environment. And the manufacturing cost is very low, and the atmospheric pressure air residual environment of one part per billion can be prepared, which is calculated as ultrahigh vacuum. In fact, one ten thousandth of atmospheric air residual quantity (barrier-free environment) can be achieved every time of exhaust. After three times of pumping, the atmospheric air residual quantity of one part per billion, namely the atmospheric air residual quantity of the third power can be prepared.

The technical scheme is as follows:

in the process of building the magnetic suspension pipeline, a closed isolation gate (hereinafter referred to as a gate) is built every two hundred kilometers for the whole magnetic suspension pipeline, a sealed water pipe communicated with the outside of the pipeline (the water pipe and the pipe are closed) is welded at every one hundred kilometers of the bottom of the whole magnetic suspension pipeline, the water inlet and the water outlet of the water pipe are lower than the bottom plane of the magnetic suspension pipeline, the water pipe is arranged in the center of the center, a pipe orifice is provided with a clamping ring and is connected with a buckle of a tubular air bag, and a high-quality high-pressure sealing ring is used for firmly clamping the sealing ring by using the buckle to form seamless connection, so that water and air leakage are avoided. The magnetic suspension pipeline with two hundred kilometers is equally divided into ten water pumping and injecting stations, the ten water pumping and injecting stations simultaneously inject water into the tubular air bag in the pipeline, air is exhausted after the water is fully injected, the water pumping and injecting stations are pumped out to prepare vacuum, the environment with ultrahigh vacuum can be prepared repeatedly, the pipeline with one hundred meters is paved in one eighty-meter section of the tubular air bag, the two ends of the tubular air bag are required to be stretched for ten meters respectively and are clamped in the reserved clamping grooves by magnetic stripes, after the tubular air bag is clamped and tensioned, the tubular air bag is tightly attached to the bottom of the magnetic suspension pipe, the magnetic suspension pipeline is not withdrawn after the tubular air bag is used, and the normal operation of a train is not influenced. If the magnetic suspension pipeline has a small amount of air leakage, the operation of the section can be stopped, the gates at the two ends are closed, and the water pump is arranged to prepare vacuum at any time, so that the operation of the whole line is not influenced.

Description of the drawings:

FIG. 1 is a longitudinal side view of a magnetic levitation conduit and a sealing gate.

1. The magnetic floating pipelines A, B are all gates.

FIG. 2 is a longitudinal sectional view of a magnetic levitation conduit

1. Magnetic suspension pipeline A, B gate 2, tubular air bag 3, check valve 4, exhaust valve 5, water inlet and outlet 6, magnetic suspension pipeline external water pipe 7, water injection air release valve 8, water injection water pumping pipe gate

FIG. 3 longitudinal cross-sectional view of a service pipe and service containment door

1. Magnetic suspension pipeline A, B magnetic suspension pipeline gate 2 and tubular air bag

3. Check valve 4, exhaust valve 5, water inlet and outlet

8. Water injection and pumping pipe valve 9, maintenance pipeline gate 10 and maintenance pipeline

11. Maintenance personnel enter and exit the closed space 12 of the vacuum pipeline and the wall of the maintenance pipe

13. A maintenance gate frame 14 and a maintenance pipeline gate door leaf.

The specific implementation mode is as follows:

in the process of building the magnetic suspension pipeline, a gate is built every two hundred kilometers for the whole magnetic suspension pipeline, so that the vacuum production is convenient, the maintenance is convenient, in case of air leakage of a certain section, two adjacent gates of the section can be closed, only the pipeline between the two gates is influenced, and other sections are not influenced or are slightly influenced. Ten equidistant water pumping and injecting stations are arranged on a two-hundred kilometer magnetic suspension pipeline, one water pipe is welded at each hundred meters of the bottom of the whole magnetic suspension pipeline and communicated with the water pipe outside the pipeline, and air cannot leak out. The water pipe mouth at the bottom of the magnetic suspension pipeline is provided with a snap ring which is lower than the plane of the bottom, and a concave shallow groove with the depth of 4 mm and the width of one meter is built in the center of the bottom and is used for placing a high-quality tubular air bag with the expansion-contraction ratio of 20 times. The tubular air pipe is made into one section of eighty meters, the buckle of the water receiving pipe is arranged in the middle, and the two ends of the water receiving pipe are 40 meters respectively. The buckle with the high-pressure sealing ring is aligned to the water pipe clamping ring at the bottom of the magnetic floating pipe by gravity, and the buckle is enabled to firmly grasp the clamping ring, so that seamless connection is realized, and the high-quality sealing ring can ensure that no water or air leakage exists for decades and hundreds of years. Closing two adjacent gates, starting ten water pumping and injecting stations within two hundred kilometers between the two gates, simultaneously injecting water into the tubular air bags in the section of magnetic suspension pipeline with two hundred kilometers by using a multistage water pump, opening air release valves of each water inlet and outlet pipe, closing the air release valves to inject water into the tubular air bags when water flows out after air in the water pipes is exhausted, and opening the air release valves above the magnetic suspension pipes. The top end of the exhaust valve is provided with a check valve to ensure that the gas cannot flow backwards. When the water pressure of water injection reaches 0.15 MPa, stopping water injection, closing all exhaust valves above the magnetic floating pipes, changing water injection into water pumping, pumping water into the tubular air bags of the adjacent magnetic floating pipes by using a multistage water pump, and performing the same exhaust operation of the adjacent magnetic floating pipes again, wherein when the water vapor of the first magnetic floating pipe is completely pumped out and the water pressure of the adjacent second magnetic floating pipe reaches 0.15 MPa (if the water volume needs to be supplemented under insufficient pressure, the water volume reaches 0.15 MPa). Then the water in the second magnetic floating pipe is pumped back into the first magnetic floating pipe by a multistage water pump, when the water pressure reaches 0.15 MPa, an exhaust valve is opened, a small amount of gas remained after the first exhaust is discharged, thus the two-hundred kilometer magnetic floating pipelines can be manufactured into one hundred billion ultra-high vacuum magnetic floating pipelines of normal pressure by repeating five times, the gates at the two ends of the magnetic floating pipe are not movable, the two-hundred kilometer magnetic floating pipelines can be opened when the whole pipeline is manufactured into ultra-high vacuum, the water in the pipe is pumped out of the next two-hundred-kilometer magnetic floating pipeline, and the vacuum manufacturing is carried out by the same method.

The invention relates to an ultrahigh vacuum magnetic suspension pipeline, one of the series patents of an ultrahigh speed flying magnetic suspension train, which is used for sweeping all air in the magnetic suspension pipeline for the ultrahigh speed flying magnetic suspension train. The magnetic suspension train can fly at high speed of ten thousand kilometers per hour safely in the magnetic suspension pipeline without resistance and friction.

In order to facilitate sealing, reduce construction amount, improve transport capacity and recover investment as soon as possible, the magnetic suspension pipeline is designed to be oval, the major diameter is 6 meters, the minor diameter is about 4.5 meters, the space per meter is about 22m3 meters, the pipeline is filled with water in two hundred kilometers, and the water needs 450 million cubic meters. The bottom plane of the magnetic floating pipe needs to be leveled, and the tubular air bag is tightly and tightly attached to a shallow groove 4 mm deep at the bottom of the magnetic floating pipe and one meter wide due to the influence of pulling force, so that the operation of a magnetic suspension train is not influenced. In order to conveniently discharge air, the pipe wall of the end head of each section of the tubular air bag with the length of eighty meters is thinnest, the pipe wall is gradually thickened from two ends to the clamping ring of the middle water receiving pipe opening, namely after water is injected, the two ends of the air bag expand a little, the air at the two ends is favorably extruded to the middle exhaust valve, and therefore the air in the pipe is favorably discharged. But the thickness of the pipe cannot be too large, the pipe needs to be expanded to be as large as 0.1 MPa, the pipe can be repeatedly used in a thin place without leakage, the quality is ensured, and the pipe can work for fifty to one hundred years in a constant-temperature and constant-humidity ultrahigh vacuum environment.