CN109781396A - A kind of height-rise formula heavy type negative pressure test case apparatus - Google Patents
A kind of height-rise formula heavy type negative pressure test case apparatus Download PDFInfo
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- CN109781396A CN109781396A CN201910032538.3A CN201910032538A CN109781396A CN 109781396 A CN109781396 A CN 109781396A CN 201910032538 A CN201910032538 A CN 201910032538A CN 109781396 A CN109781396 A CN 109781396A
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- platform
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- negative pressure
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Abstract
The present invention relates to a kind of height-rise formula heavy type negative pressure test case apparatus, including a liftable bell-jar box unit, platform (10) for placing sample (13) is set below bell-jar box unit, the vacuum pump (9) being arranged below platform (10) and the lifting unit for controlling the lifting of bell-jar box unit, the outer ring of the platform (10) is equipped with sealing ring (17), when the decline of bell-jar box unit covers platform (10), the sealing ring (17) is located between platform (10) and bell-jar box unit, and it is in interference fit state.Compared with prior art, laborsaving and accurate positioning of the invention, is suitble to the test of heavy and large-scale sample, pushes sample using railcar, the present apparatus has balanced type automatic Protection, can reduce potential risk.
Description
Technical field
The present invention relates to negative pressure test technical fields, and in particular to a kind of height-rise formula heavy type negative pressure test case apparatus.
Background technique
Common negative pressure test case is horizontal cylindrical shape structure, and the negative pressure baking oven of circular configuration can be more preferable when vacuumizing
Guarantee air pressure uniformity, more can guarantee test in temperature it is uniform.Round chamber door is arranged in columnar negative pressure baking oven one end,
Because bottom be it is arc-shaped, must setting bracket place sample, reduce the useful space of cabinet, the sample of small lot can only be carried out,
It is also difficult to place the sample of weight simultaneously.Rectangular negative pressure test baking oven is on temperature control and on pressure uniformity all not as good as round negative pressure
Baking oven is tested, rectangular negative pressure test case is needed will if be not fully welded at the intracorporal splicing seams of case using welding squarely
Free gas leak phenomenon.During the test, sample, can only be by baking in case of explosion or combustion case for common negative pressure baking oven
The explosion-protection equipment of case itself alarms or machine is automatically closed, and the danger coefficient of test is higher.
Summary of the invention
Simple, safety that it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of structures
Stable height-rise formula heavy type negative pressure test case apparatus.
The purpose of the present invention can be achieved through the following technical solutions: a kind of height-rise formula heavy type negative pressure test case apparatus,
The device includes a liftable bell-jar box unit, is arranged in below bell-jar box unit for placing the flat of sample
Platform, the vacuum pump being arranged in below platform and the lifting unit for controlling the lifting of bell-jar box unit, the platform
Outer ring is equipped with sealing ring, and when the decline of bell-jar box unit covers platform, the sealing ring is located at platform and bell-jar cabinet
Between unit, and it is in interference fit state.
The bell-jar box unit include the more vertical rails arranged vertically and be slidably connected at more it is vertical
The top of cover among guide rail, the cover is connect with lifting unit, and when cover drops to bottom, the upper of the platform is put down
Face is located at middle part in cover, and the top of cover inner wall and the upper surface of platform surround the test space jointly, and the sample cover is put
It sets in the test space, at this point, the inner wall of the cover is abutted with sealing ring.The test space is a confined space, when closed
When air pressure is less than atmospheric pressure in space, atmosphere can give one downward pressure of covering on top, and pressure difference is bigger, and downward pressure is got over
Greatly.
The outer wall of the cover is fixed with muti-piece and helps plate, and plate is helped to be slidably connected on a vertical rail described in every piece.
Be equipped with through-hole in the middle part of vertical rail described in every, plug safety cock in the through-hole, when device when not in use, institute
It states safety cock to plug in through-holes, and the bottom of the cover is placed on safety cock.The setting so that device when not in use,
Cover has fixed position, prevents cover from falling, smashes platform or injure operator by a crashing object, and structure is simple.
It is fixed with guide rail circle holding on the outside of the more vertical rails, it is inclined which can prevent more vertical rails from occurring
It moves.
The vacuum pump is located at the lower section of platform, and is connected to the test space, and vacuum pressure is equipped in the test space
Table.Vacuum pump can extract the air in confined space, and air pressure and atmospheric pressure in confined space is made to form pressure difference.
The lift unit includes a clump weight and a capstan winch, locks and releases equipped with a capstan winch on the capstan winch
Laying mechanism fixes two drag-lines at the top of the clump weight, wherein a drag-line passes through two fixed pulleys and bell-jar cabinet list
First top connection, another drag-line is connect by a fixed pulley with capstan winch, and winds the weight of the clump weight on capstan winch
Greater than the weight of cover.
Described device is equipped with a feed unit, and the feed unit includes that a loading bay and one are used to place sample
Load sample trolley, the loading bay upper surface is equipped with outside track, and the platform upper surface is equipped with inner orbit, and the loading bay is close
The side of platform is equipped with turnover active orbit plate, the active orbit plate connection outside track and inner orbit, described before test
Load sample trolley enters inner orbit by active orbit plate from outside track, eventually settles on platform.
Compared with prior art, the beneficial effects of the present invention are embodied in following several respects:
1) effective use space is expanded.
2) it overcomes usual negative pressure box and is difficult to the shortcomings that placing weight.
3) have the function of automatic safe protective, can effectively minimize danger coefficient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, it 1 is locked for capstan winch and relieving mechanism, 2 be capstan winch, and 3 be clump weight, and 4 be vertical rail, and 5 be safety cock, 6
To help plate, 7 be cover, and 8 be guide rail circle holding, and 9 be vacuum pump, and 10 be platform, and 11 be active orbit plate, and 12 be load sample trolley, 13
It is drag-line for sample, 14,15 be fixed pulley, and 16 be outside track, and 17 be sealing ring, and 18 be loading bay, and 19 be inner orbit.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of height-rise formula heavy type negative pressure test case apparatus, the device include a liftable bell-jar box unit, set
It sets the platform 10 below bell-jar box unit for placing sample 13, the vacuum pump 9 being arranged in below platform 10 and uses
It is equipped with sealing ring 17 in the outer ring of the lifting unit of control bell-jar box unit lifting, platform 10, when bell-jar box unit
When decline covers platform 10, sealing ring 17 is in interference fit state between platform 10 and bell-jar box unit.
Bell-jar box unit includes the more vertical rails arranged vertically 4 and is slidably connected at more vertical rails 4
Intermediate cover 7, the top of cover 7 is connect with lifting unit, and when cover 7 drops to bottom, the upper plane of platform 10 is located at
Middle part in cover 7, and the top of 7 inner wall of cover and the upper surface of platform 10 surround the test space jointly, the cover of sample 13 is placed on
In the test space, at this point, the inner wall of cover 7 is abutted with sealing ring 17.The test space is a confined space, when in confined space
When air pressure is less than atmospheric pressure, atmosphere can give cover the 7 one downward pressure in top, and pressure difference is bigger, and downward pressure is bigger.
The outer wall of cover 7 is fixed with muti-piece and helps plate 6, and every piece is helped plate 6 to be slidably connected on a vertical rail 4.
Be equipped with through-hole in the middle part of every vertical rail 4, plug safety cock 5 in through-hole, when device when not in use, safety cock 5 is inserted
If in through-holes, and the bottom of cover 7 is placed on safety cock 5.The setting so that device when not in use, cover 7 has solid
Fixed position prevents cover 7 from falling, and smashes platform 10 or injures operator by a crashing object, and structure is simple.
It is fixed with guide rail circle holding 8 on the outside of more vertical rails 4, which can prevent more vertical rails 4 from occurring partially
It moves.
Vacuum pump 9 is located at the lower section of platform 10, and is connected to the test space, and pressure vacuum gauge is equipped in the test space.Very
Sky pump 9 can extract the air in confined space, and air pressure and atmospheric pressure in confined space is made to form pressure difference.
Lift unit includes a clump weight 3 and a capstan winch 2, is furnished with a capstan winch locking and machine for releasing on capstan winch 2
Two drag-lines 14 are fixed at structure 1, the top of clump weight 3, wherein a drag-line 14 passes through two fixed pulleys 15 and bell-jar cabinet list
First top connection, another drag-line 14 is connect by a fixed pulley 15 with capstan winch 2, and is wound on capstan winch 2, clump weight 3
Weight is greater than the weight of cover 7.
Device is equipped with a feed unit, and feed unit includes the load that a loading bay 18 and one are used to place sample 13
Sample trolley 12,18 upper surface of loading bay are equipped with outside track 16, and 10 upper surface of platform is equipped with inner orbit 19, and loading bay 18 is close to platform
10 side is equipped with turnover active orbit plate 11, and active orbit plate 11 connects outside track 16 and inner orbit 19, before test, carries
Sample trolley 12 enters inner orbit 19 by active orbit plate 11 from outside track 16, eventually settles on platform 10.
The working principle of the present apparatus is as follows:
Device is when not in use: capstan winch locking and relieving mechanism 1 are first unclamped, since 3 weight of clump weight is greater than cover 7, so
Clump weight 3 declines, and cover 7 rises, and when 7 climb of cover is suitable, locks capstan winch 2 with relieving mechanism 1 using capstan winch locking,
Clump weight 3 is prevented to continue to decline, cover 7 rests in the air at this time, and safety cock 5 is inserted into vertical rail 4, prevents cover 7
It falls suddenly；
Before test: active orbit plate 11 is first put down, and is docked inner orbit 19 and outside track 16, is then placed on sample 13
On load sample trolley 12, load sample trolley 12 enters platform 10 along outside track 16, active orbit plate 11, inner orbit 19 with sample 13,
It is then attached to 10 upper surface of platform；Then safety cock 5 is removed, and rotates backward capstan winch 2, increase clump weight 3, to make cover
Body 7 declines, until cover 7 bottoms out.At this point, the top of 7 inner wall of cover and the upper surface of platform 10 surround the test space jointly, fill
There is the load sample trolley 12 of sample 13 to be located in the test space, start vacuum pump 9, keep air pressure in the test space subatmospheric,
And the air pressure in the test space is monitored by pressure vacuum gauge, make the stable gas pressure in the test space.Due to gas in the test space
There are pressure differences for pressure and atmospheric pressure, so that a downward pressure of the cover 7 by atmospheric pressure, which omits plus the gravity of cover 7
Greater than the gravity of clump weight 3, it is then totally released capstan winch locking and relieving mechanism 1, stands whole device, the test of sample 13 is opened
Begin.
When sudden explosion occurs in 13 test process of sample situations such as, the gas in the test space sharply increases, vacuum
Pump 9 can not absorb the gas of generation in time, so that air pressure rises in the test space, reduce with the pressure difference of atmospheric pressure, atmosphere
The downward pressure to cover 7 is pressed to become smaller, clump weight 3 declines under the effect of gravity, and cover 7 is driven to rise, and finally makes close
It closes space to be communicated with the atmosphere, prevents dangerous expansion.
Claims (8)
1. a kind of height-rise formula heavy type negative pressure test case apparatus, which is characterized in that the device includes a liftable bell-jar case
The platform (10) for placing sample (13), setting is arranged below bell-jar box unit below platform (10) in body unit
Vacuum pump (9) and lifting unit for controlling the lifting of bell-jar box unit, the outer ring of the platform (10) is equipped with close
Seal (17), when the decline of bell-jar box unit covers platform (10), the sealing ring (17) is located at platform (10) and bell jar
Between formula box unit, and it is in interference fit state.
2. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 1, which is characterized in that the bell-jar
Box unit includes the more vertical rails arranged vertically (4) and the cover for being slidably connected at more vertical rails (4) centres
(7), the top of the cover (7) is connect with lifting unit, and when cover (7) drops to bottom, the upper of the platform (10) is put down
Face is located at middle part in cover (7), and the upper surface of the top of cover (7) inner wall and platform (10) surrounds the test space jointly, institute
It states sample (13) cover to be placed in the test space, at this point, the inner wall of the cover (7) is abutted with sealing ring (17).
3. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 2, which is characterized in that the cover
(7) outer wall is fixed with muti-piece and helps plate (6), and plate (6) is helped to be slidably connected on a vertical rail (4) described in every piece.
4. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 2, which is characterized in that stood described in every
Be equipped with through-hole in the middle part of formula guide rail (4), plug safety cock (5) in the through-hole, when device when not in use, the safety cock (5) is inserted
If in through-holes, and the bottom of the cover (7) is placed on safety cock (5).
5. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 2, which is characterized in that more described vertical
Guide rail circle holding (8) are fixed on the outside of guide rail (4).
6. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 2, which is characterized in that the vacuum pump
(9) it is located at the lower section of platform (10), and is connected to the test space, pressure vacuum gauge is equipped in the test space.
7. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 2, which is characterized in that the lift unit
Including a clump weight (3) and a capstan winch (2), it is furnished with a capstan winch locking and relieving mechanism (1) on the capstan winch (2),
Two drag-lines (14) are fixed at the top of the clump weight (3), wherein a drag-line (14) passes through two fixed pulleys (15) and bell jar
Connection at the top of formula box unit, another drag-line (14) are connect by a fixed pulley (15) with capstan winch (2), and are wound in capstan winch
(2) on, the weight of the clump weight (3) is greater than the weight of cover (7).
8. a kind of height-rise formula heavy type negative pressure test case apparatus according to claim 1, which is characterized in that described device is equipped with
One feed unit, the feed unit include the load sample trolley (12) that a loading bay (18) and one are used to place sample,
Loading bay (18) upper surface is equipped with outside track (16), and platform (10) upper surface is equipped with inner orbit (19), the charging
Platform (18) is equipped with turnover active orbit plate (11) close to the side of platform (10), and the active orbit plate (11) connects outer rail
Road (16) and inner orbit (19), before test, the load sample trolley (12) enters from outside track (16) by active orbit plate (11)
Inner orbit (19) eventually settles on platform (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032538.3A CN109781396A (en) | 2019-01-14 | 2019-01-14 | A kind of height-rise formula heavy type negative pressure test case apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032538.3A CN109781396A (en) | 2019-01-14 | 2019-01-14 | A kind of height-rise formula heavy type negative pressure test case apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109781396A true CN109781396A (en) | 2019-05-21 |
Family
ID=66500566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910032538.3A Pending CN109781396A (en) | 2019-01-14 | 2019-01-14 | A kind of height-rise formula heavy type negative pressure test case apparatus |
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Citations (9)
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|---|---|---|---|---|
| GB484670A (en) * | 1936-11-05 | 1938-05-05 | Charles Sykes | Improvements in apparatus for applying coatings to surfaces |
| CN2365185Y (en) * | 1999-04-07 | 2000-02-23 | 徐法俭 | Negative pressure tube bottle vacuum package instrument |
| CN201120273Y (en) * | 2007-10-25 | 2008-09-24 | 北京航空航天大学 | Vacuum can |
| CN101832812A (en) * | 2010-04-12 | 2010-09-15 | 中国计量科学研究院 | Vacuum cover hoisting device of quality comparator and application thereof |
| CN101886550A (en) * | 2010-04-25 | 2010-11-17 | 樊铁山 | Method for automatically closing through thrown counterweight after opening coal mine anti-explosion cover by explosion impact wave |
| CN202382578U (en) * | 2011-12-31 | 2012-08-15 | 海盐华辰工业炉有限公司 | Material loading device for heat treatment furnace |
| CN105206158A (en) * | 2015-09-15 | 2015-12-30 | 东南大学 | South pole low-temperature and low-pressure environment simulation cabin |
| CN106482138A (en) * | 2016-11-11 | 2017-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of adjustable chimney venting of dust explosion diffusion valve of Opening pressure |
| CN108438532A (en) * | 2018-03-29 | 2018-08-24 | 北京卫星环境工程研究所 | Vacuum system with glass bell jar |
-
2019
- 2019-01-14 CN CN201910032538.3A patent/CN109781396A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB484670A (en) * | 1936-11-05 | 1938-05-05 | Charles Sykes | Improvements in apparatus for applying coatings to surfaces |
| CN2365185Y (en) * | 1999-04-07 | 2000-02-23 | 徐法俭 | Negative pressure tube bottle vacuum package instrument |
| CN201120273Y (en) * | 2007-10-25 | 2008-09-24 | 北京航空航天大学 | Vacuum can |
| CN101832812A (en) * | 2010-04-12 | 2010-09-15 | 中国计量科学研究院 | Vacuum cover hoisting device of quality comparator and application thereof |
| CN101886550A (en) * | 2010-04-25 | 2010-11-17 | 樊铁山 | Method for automatically closing through thrown counterweight after opening coal mine anti-explosion cover by explosion impact wave |
| CN202382578U (en) * | 2011-12-31 | 2012-08-15 | 海盐华辰工业炉有限公司 | Material loading device for heat treatment furnace |
| CN105206158A (en) * | 2015-09-15 | 2015-12-30 | 东南大学 | South pole low-temperature and low-pressure environment simulation cabin |
| CN106482138A (en) * | 2016-11-11 | 2017-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of adjustable chimney venting of dust explosion diffusion valve of Opening pressure |
| CN108438532A (en) * | 2018-03-29 | 2018-08-24 | 北京卫星环境工程研究所 | Vacuum system with glass bell jar |
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