CN107238533A - A kind of vacuum pressure experimental rig - Google Patents
A kind of vacuum pressure experimental rig Download PDFInfo
- Publication number
- CN107238533A CN107238533A CN201710608610.3A CN201710608610A CN107238533A CN 107238533 A CN107238533 A CN 107238533A CN 201710608610 A CN201710608610 A CN 201710608610A CN 107238533 A CN107238533 A CN 107238533A
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- support
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- ball
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- 238000002474 experimental method Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000002459 sustained effect Effects 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Educational Administration (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Computational Mathematics (AREA)
- Algebra (AREA)
- Educational Technology (AREA)
- Mathematical Analysis (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of vacuum pressure experimental rig, including support, the bottom of the support is fixedly installed bottom plate, the internal stent, which is located on the bottom plate, is installed with vacuum extractor, the vacuum extractor is connected with experiment ball by pipeline, the inside of the experiment ball is hollow structure, the experiment ball is made up of left hemisphere and right hemisphere, the outside of the right hemisphere is connected on the bracket by steel wire rope, the outside of the left hemisphere is connected with tensiometer by steel wire rope, elevator motor and elevator group are installed with the outside of the support, reductor is connected with the elevator motor, the elevator group is located at the experiment ball sustained height, the elevator group is connected with the speed reducer drive.The present invention records the value of thrust corresponding to different atmospheric pressure values by control variate method, so as to provide authentic data for vacuum pressure experiment, has the advantages that simple in construction, easy to use, using effect is good.
Description
Technical field
The present invention relates to vacuum pressure testing equipment technical field, specially a kind of vacuum pressure experimental rig.
Background technology
The implication of vacuum refers to the gaseous state less than an atmospheric pressure in given space, is that a kind of physics shows
As.This thin gaseous state is generally called vacuum condition by people.This specific vacuum state is depended on for existence with the mankind
Air compared in state, mainly have following several basic characteristics：（1）Less than one air of gas pressure under vacuum state
Pressure, therefore, in the various vacuum tanks on earth surface, will be acted on, the size of its pressure difference by atmospheric pressure
Depending on the pressure difference inside and outside container.Because an atmospheric pressure in effect at the earth's surface is about 101325N/m2 (Pa), because
This is when container inner pressure very little, then the atmospheric pressure that container is born can reach an atmospheric pressure.（2）Under vacuum state due to
Gas is thin, and the molecular density of the gas molecula number in unit volume, i.e. gas is less than the density of gas molecules of atmospheric pressure.Cause
This, the mutually relative reduction of collision frequency, makes gas between molecule, between molecule and other particles and molecule and various surfaces
The molecular free path increase of body.Need to use vacuum pressure experimental rig in the research of vacuum pressure, but existing device
Structure is complex, and purchase cost is higher, is not easy to school experiment and uses, using effect is poor, using dangerous.
The content of the invention
It is an object of the invention to provide a kind of vacuum pressure experimental rig, with asking for solving to propose in above-mentioned background technology
Topic.
To achieve the above object, the present invention provides following technical scheme：A kind of vacuum pressure experimental rig, including support,
The bottom of the support is fixedly installed bottom plate, and the internal stent, which is located on the bottom plate, is installed with vacuum extractor,
The vacuum extractor is connected with experiment ball by pipeline, and the inside of the experiment ball is hollow structure, and the experiment ball is by a left side
Hemisphere and right hemisphere composition, the outside of the right hemisphere are connected on the bracket by steel wire rope, the outside of the left hemisphere
It is connected with by steel wire rope on the outside of tensiometer, the support and is installed with elevator motor and elevator group, the elevator motor
On be connected with reductor, the elevator group is located at the experiment ball sustained height, and the elevator group connects with the speed reducer drive
Connect, the elevator group is fixedly connected by lift rope with one end of the tensiometer.
It is preferred that, it is provided with pressure gauge on the experiment ball.
It is preferred that, the contact surface of the left hemisphere and right hemisphere is fixedly installed O-ring seal.
It is preferred that, the side of the support is fixedly installed data board.
It is preferred that, the vacuum means are set to vavuum pump.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention can be drawn by vacuum extractor to carrying out vacuumize process, vacuum inside experiment ball according to atmospheric pressure value
It is divided into some segments, during experiment, elevator motor controls elevator group by reductor, and elevator group is by lift rope to vacuumizing
Test ball and carry out tensile test, left hemisphere and right hemisphere are separated when pulling force reaches certain value, now record the drawing on tensiometer
Force value, by control variate method, records the value of thrust corresponding to different atmospheric pressure values, so as to provide reliable number for vacuum pressure experiment
According to.
2nd, the present invention is used for school experiment, can one man operation, using safety, with it is simple in construction, easy to use, use
The advantages of effect is good.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is present invention experiment ball side structure schematic diagram.
In figure：1- elevator groups；2- elevator motors；3- tensiometers；4- pressure gauges；5- tests ball；51- left hemispheres；52- right half
Ball；6- pipelines；7- bottom plates；8- vacuum plants；9- supports；10- steel wire ropes；11- data boards；12- reductors；13- lift ropes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：A kind of vacuum pressure experimental rig, including support 9, institute
The bottom for stating support 9 is fixedly installed bottom plate 7, and the support 9 is internally located on the bottom plate 7 and is installed with vacuum extractor
8, the vacuum extractor 8 is connected with experiment ball 5 by pipeline 6, and the inside of the experiment ball 5 is hollow structure, the experiment
Ball 5 is made up of left hemisphere 51 and right hemisphere 52, and the outside of the right hemisphere 52 is connected on the support 9 by steel wire rope 10,
The outside of the left hemisphere 51 is connected with tensiometer 3 by steel wire rope 10, and the outside of the support 9 is installed with elevator motor
2 and elevator group 1, reductor 12 is connected with the elevator motor 2, and the elevator group 1 is located at the experiment sustained height of ball 5,
The elevator group 1 is connected with the reductor 12, one end that the elevator group 1 passes through lift rope 13 and the tensiometer 3
It is fixedly connected.
Pressure gauge 4 is provided with the experiment ball 5, for the air pressure inside test experience ball 5；The left hemisphere 51 and the right side
The contact surface of hemisphere 52 is fixedly installed O-ring seal, improves the experiment sealing of ball 5；The side of the support 9 is fixedly installed
Data board 11, for recording experimental data；The vacuum extractor 8 is vavuum pump, for carrying out vacuumizing place to experiment ball 5
Reason.
Operation principle：The invention carries out vacuumize process, vacuum by 8 pairs of inside of experiment ball 5 of vacuum extractor
Some segments can be divided into according to atmospheric pressure value, during experiment, elevator motor 2 controls elevator group 1, elevator group 1 by reductor 12
Tensile test is carried out by 13 pairs of experiment balls 5 vacuumized of lift rope, left hemisphere 51 and right hemisphere when pulling force reaches certain value
52 separate, and now record the value of thrust on tensiometer 3, by control variate method, record the value of thrust corresponding to different atmospheric pressure values,
Have the advantages that simple in construction, easy to use, using effect is good.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of vacuum pressure experimental rig, including support（9）, it is characterised in that：The support（9）Bottom be fixedly installed
Bottom plate（7）, the support（9）It is internally located at the bottom plate（7）On be installed with vacuum extractor（8）, the vacuum means
Put（8）Pass through pipeline（6）It is connected with experiment ball（5）, the experiment ball（5）Inside be hollow structure, the experiment ball（5）By
Left hemisphere（51）With right hemisphere（52）Composition, the right hemisphere（52）Outside pass through steel wire rope（10）It is connected to the support
（9）On, the left hemisphere（51）Outside pass through steel wire rope（10）It is connected with tensiometer（3）, the support（9）Outside fix
Elevator motor is installed（2）With elevator group（1）, the elevator motor（2）On be connected with reductor（12）, the elevator group（1）
Positioned at the experiment ball（5）Sustained height, the elevator group（1）With the reductor（12）Drive connection, the elevator group（1）
Pass through lift rope（13）With the tensiometer（3）One end be fixedly connected.
2. a kind of vacuum pressure experimental rig according to claim 1, it is characterised in that：The experiment ball（5）It is upper to set
There is pressure gauge（4）.
3. a kind of vacuum pressure experimental rig according to claim 1, it is characterised in that：The left hemisphere（51）With right half
Ball（52）Contact surface be fixedly installed O-ring seal.
4. a kind of vacuum pressure experimental rig according to claim 1, it is characterised in that：The support（9）Side consolidate
Surely it is provided with data board（11）.
5. a kind of vacuum pressure experimental rig according to claim 1, it is characterised in that：The vacuum extractor（8）For
Vavuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608610.3A CN107238533A (en) | 2017-07-24 | 2017-07-24 | A kind of vacuum pressure experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608610.3A CN107238533A (en) | 2017-07-24 | 2017-07-24 | A kind of vacuum pressure experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107238533A true CN107238533A (en) | 2017-10-10 |
Family
ID=59988059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710608610.3A Pending CN107238533A (en) | 2017-07-24 | 2017-07-24 | A kind of vacuum pressure experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107238533A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6459114A (en) * | 1987-08-31 | 1989-03-06 | Kanzaki Paper Mfg Co Ltd | Smoothness measurement |
| CN201927250U (en) * | 2011-01-30 | 2011-08-10 | 韩品强 | Hemisphere experiment device |
| CN203217838U (en) * | 2013-03-04 | 2013-09-25 | 隋山南 | Air pressure demonstration instrument |
| CN204204285U (en) * | 2014-11-17 | 2015-03-11 | 陈伟杰 | Easy bleeder Magdeburg hemispheres experimental apparatus |
| CN207020000U (en) * | 2017-07-24 | 2018-02-16 | 江苏方正环测设备有限公司 | A kind of vacuum pressure experimental rig |
-
2017
- 2017-07-24 CN CN201710608610.3A patent/CN107238533A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6459114A (en) * | 1987-08-31 | 1989-03-06 | Kanzaki Paper Mfg Co Ltd | Smoothness measurement |
| CN201927250U (en) * | 2011-01-30 | 2011-08-10 | 韩品强 | Hemisphere experiment device |
| CN203217838U (en) * | 2013-03-04 | 2013-09-25 | 隋山南 | Air pressure demonstration instrument |
| CN204204285U (en) * | 2014-11-17 | 2015-03-11 | 陈伟杰 | Easy bleeder Magdeburg hemispheres experimental apparatus |
| CN207020000U (en) * | 2017-07-24 | 2018-02-16 | 江苏方正环测设备有限公司 | A kind of vacuum pressure experimental rig |
Non-Patent Citations (1)
| Title |
|---|
| 任化民: "马德堡半球实验与疏通下水道的"高招"", 《科学之友》 * |
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Application publication date: 20171010 |