CN104941697B - A kind of air-pressure balancing device - Google Patents
A kind of air-pressure balancing device Download PDFInfo
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- CN104941697B CN104941697B CN201510291856.3A CN201510291856A CN104941697B CN 104941697 B CN104941697 B CN 104941697B CN 201510291856 A CN201510291856 A CN 201510291856A CN 104941697 B CN104941697 B CN 104941697B
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- fixed mount
- guide rail
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- housing
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Abstract
The invention discloses a kind of air-pressure balancing device, including two windshield covers, the housing of both ends open, two pieces of pressure plates, fixed mount and spring, described windshield cover is placed at the both ends open of described housing respectively, offering several air inlet grills on described windshield cover, the inner surface of this windshield cover is provided with the first guide rail pole；Described fixed mount is positioned at housing, and the inwall of described housing is close at the edge of described fixed mount, and described fixed mount offers passage, and the both sides of described fixed mount are respectively arranged with the second guide rail pole, and described second guide rail pole and the first guide rail pole are mutually butted.The features such as this air-pressure balancing device disclosure satisfy that the device requirement to air pressure balance, additionally it is possible to effectively eliminates the impact that air pressure balance is controlled to produce by circulated air flowing, has without good airproof performance during pressure reduction, accurately compensates air pressure, easy for installation.
Description
Technical field
The present invention relates to environment simulation technique field, particularly relate to a kind of air-pressure balancing device.
Background technology
High-low temperature test chamber as the equipment of a simulated environment temperature, simulated environment temperature range can from-
70 DEG C～100 DEG C.When carrying out thermocycling, according to the principle expanded with heat and contract with cold, high temperature nowel internal gas pressure is high
In ambient pressure；Low temperature nowel internal gas pressure is less than ambient pressure.Without air-pressure balancing device guard box
Internal gas pressure keeps balance with ambient pressure, and test box body will be caused to deform.If but air-pressure balancing device
Sealing is poor, or easily by circulating windage in case, causes air exchange too much, then can affect proof box
Heat-insulating property.And when carrying out low-temperature test, by due to too much inner air and outer air exchange, make condenser
Around condense substantial amounts of steam and form ice sheet, cause proof box to cannot be carried out cooling, proof box low temperature properties
Can cannot meet requirement.
Existing air pressure balance window uses pendulum model baffle design, and baffle plate peripheral clearance is big, and sealing is poor.Hold
In being vulnerable to case, there is frequent swing in circulating fan windage, thus substantial amounts of air exchange occurs.?
During high temperature, heat is easily lost to external environment, and heat insulating ability is poor；And in low-temperature test process, due in a large number
Air exchange, cause steam proof box of entering to freeze on condenser so that proof box cannot be carried out
Cooling.
Summary of the invention
In view of this, it is an object of the invention to propose a kind of air-pressure balancing device, to improve proof box
Sealing, effectively eliminates the impact that air pressure balance is controlled to produce by circulated air flowing.
Based on above-mentioned purpose, the air-pressure balancing device that the present invention provides includes two windshield covers, both ends opens
Housing, two pieces of pressure plates, fixed mount and spring, described windshield cover is placed on the two ends of described housing respectively
Opening part, described windshield cover offers several air inlet grills, and the inner surface of this windshield cover is provided with
One guide rail pole；
Described fixed mount is positioned at housing, and the inwall of described housing is close at the edge of described fixed mount, described
Offering passage on fixed mount, the both sides of described fixed mount are respectively arranged with the second guide rail pole, and described
Two guide rail poles and the first guide rail pole are mutually butted；Described pressure plate is each passed through the second guide rail pole of both sides,
And can slide along the second guide rail pole, thus it is used for opening or close described passage；Described spring
It is socketed on the first guide rail pole and the outer surface of the second guide rail pole, for extruding described towards the direction of passage
Pressure plate.
In some embodiments of the invention, it is provided with position-limited rail in described housing, described position-limited rail sets
Being equipped with stopper slot, the edge of described fixed mount can snap in this stopper slot, thus described fixed mount is solid
It is scheduled on this position-limited rail；The edge of described pressure plate caves inward formation sliding tray, this sliding tray clamping
On described position-limited rail, and can slide along described position-limited rail.
In some embodiments of the invention, the edge of described fixed mount caves inward formation mounting groove,
Described mounting groove can be connected on described position-limited rail, and slides along described position-limited rail, thus will be fixing
Frame slips in housing along position-limited rail, and the quantity of described mounting groove is more than or equal to the number of described position-limited rail
Amount.
In some embodiments of the invention, in described housing, it is evenly distributed 4 position-limited rails, described
Position-limited rail runs through the both ends open of this housing, and described stopper slot is positioned at the centre of position-limited rail；Described fixed mount
Edge cave inward formation 4 equally distributed mounting grooves, this mounting groove can be connected in described limit
On the rail of position, and slide along described position-limited rail.
In some embodiments of the invention, the edge of described fixed mount is provided with a locating slot, when
This locating slot and stopper slot are on time, and the edge of described fixed mount snaps in stopper slot, thus by fixed mount
It is fixed on position-limited rail.
In some embodiments of the invention, described housing is cylindrical, and the edge of described fixed mount is circle
Shape, described fixed mount has been evenly distributed 4 passages, wherein, 2 passages being oppositely arranged
Opened by same pressure plate or close.
In some embodiments of the invention, described fixed mount includes that circular frame, laminating axle and second are led
Rail bar, described laminating axle is positioned at circular frame, and circle frame is separated to form four passages, and second
Guide rail pole is positioned at the both side surface of laminating axle.
In some embodiments of the invention, described every piece of pressure plate is formed by 2 pieces of fanning strips, this fan
The angle of shape sheet is 95-120 °, and the circle centre position of described 2 pieces of fanning strips is connected by guide rail hole, this guide rail
Hole passes the second guide rail pole, and can slide along the second guide rail pole, at the outer ledge of described fanning strip
It is each provided with a sliding tray.
In some embodiments of the invention, at the outer ledge of described air inlet grill, it is provided with blinker, uses
In the opening axial direction along described windshield cover making described air inlet grill.
In some embodiments of the invention, the end of described first guide rail pole caves inward formation latch
Hole, the end bosses of the second guide rail pole forms latch, and described latch inserts in described pin hole, so that
Described first guide rail pole and the second guide rail pole mechanical splice.
In some embodiments of the invention, the opening part of described housing is by external screw thread and described windshield cover
Female thread docking.
From the above it can be seen that the air-pressure balancing device that the present invention provides disclosure satisfy that device is to air pressure
The requirement of balance.During thermocycling, when there is draught head inside and outside device, it is possible to open sky
Gas passage carries out atmospheric pressure compensating.Time inside and outside device without draught head, it is possible to air duct is closed, plays
Sealing thermal insulation effect.This device can also effectively eliminate the shadow that air pressure balance is controlled to produce by circulated air flowing
Ring, have without good airproof performance during pressure reduction, accurately compensate air pressure, the feature such as easy for installation.
Accompanying drawing explanation
Fig. 1 is the structural representation after the assembling of embodiment of the present invention air-pressure balancing device；
Fig. 2 is the structural representation after the embodiment of the present invention installs pressure plate on housing additional；
Fig. 3 is that the embodiment of the present invention continues the structural representation after installing pressure plate additional on Fig. 2；
Fig. 4 is the structural representation that the embodiment of the present invention continues after adding shock mount and windshield cover on Fig. 3；
Fig. 5 is the structural representation of embodiment of the present invention windshield cover；
Fig. 6 is the structural representation of embodiment of the present invention housing；
Fig. 7 is the sectional view of embodiment of the present invention housing；
Fig. 8 is the structural representation of embodiment of the present invention pressure plate；
Fig. 9 is the structural representation of embodiment of the present invention fixed mount；
Figure 10 is the structural representation of embodiment of the present invention spring.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with being embodied as
Example, and referring to the drawings, the present invention is described in more detail.
The air-pressure balancing device that the present invention provides includes two windshield covers, the housing of both ends open, two pieces of pressures
Power sheet, fixed mount and spring, described windshield cover is placed at the both ends open of described housing respectively, described gear
Offering several air inlet grills in windshield, the inner surface of this windshield cover is provided with the first guide rail pole；Described
Fixed mount is positioned at housing, and the inwall of described housing is close at the edge of described fixed mount, on described fixed mount
Offering passage, the both sides of described fixed mount are respectively arranged with the second guide rail pole, described second guide rail pole
It is mutually butted with the first guide rail pole；Described pressure plate is each passed through the second guide rail pole of both sides, and can edge
The second guide rail pole to slide, thus be used for opening or close described passage；Described spring housing is connected to
One guide rail pole and the outer surface of the second guide rail pole, extrude described pressure plate for the direction towards passage.
With reference to Fig. 1-4, as one embodiment of the present of invention, described air-pressure balancing device includes that two keep out the wind
Lid 1,2, two pieces of pressure plates 3 of housing, fixed mount 4 and spring 5, the described windshield cover 1 of both ends open
It is placed on respectively at the both ends open of described housing 2.Understand in conjunction with Fig. 5, described windshield cover 1 offers
Several air inlet grills 12, the inner surface of this windshield cover 1 is provided with the first guide rail pole 13.
Further, described fixed mount 4 is positioned at housing 2, and the edge of described fixed mount 4 is close to described
The inwall of housing 2, described fixed mount 4 offers passage 41, and the both sides of described fixed mount 4 are respectively
Being provided with the second guide rail pole 42, described second guide rail pole 42 is mutually butted with the first guide rail pole 13.Described
Pressure plate 3 is each passed through the second guide rail pole 42 of both sides, and can slide along the second guide rail pole 42,
Thus be used for opening or close described passage 41；Described spring 5 is socketed on the first guide rail pole 13 He
The outer surface of the second guide rail pole 42, for extruding described pressure plate 3, knot towards the direction of passage 41
Close Figure 10.
The operation principle of this air-pressure balancing device is: when inside and outside there is draught head time, the pressure of hyperbar side
Sheet 3 is blocked by fixed mount 4, remains stationary as；The pressure plate 3 of low atmospheric pressure side under differential pressure action, spring
5 are extruded movement, so that passage 41 turns on, inside and outside housing 2, gas flows so that inside and outside
Air pressure keeps balance.Inside and outside differential pressure keep balance after, pressure plate 3 under the elastic force effect of spring 5,
Back moving, again fit with fixed mount 4, passage 41 is closed, and plays air pressure balance effect.
In a preferred embodiment of the present invention, the end of described first guide rail pole 13 caves inward formation
Pin hole 14, the end bosses of the second guide rail pole 42 forms latch 43, and described latch 43 inserts described inserting
In pin-and-hole 14, so that described first guide rail pole 13 and the second guide rail pole 42 mechanical splice.It is preferred that
When after described first guide rail pole 13 and the second guide rail pole 42 mechanical splice, in described first guide rail pole 13
The axis of axis and the second guide rail pole 42 is located on the same line.It is further preferable that described first leads
Rail bar 13 is identical with the external diameter of the second guide rail pole 42, so that spring 5 can be swimmingly at the first guide rail pole
13 and second move on guide rail pole 42.It should be noted that pressure plate 3 also is able to along the second guide rail
Bar the 42, first guide rail pole 13 slides.
See Fig. 6 and Fig. 7, as one embodiment of the present of invention, be provided with spacing in described housing 2
Rail 21, described position-limited rail 21 is provided with stopper slot 22, and the edge of described fixed mount 4 can snap in this
In stopper slot 22, thus described fixed mount 4 is fixed on this position-limited rail 21, sees Fig. 2.Continue
Seeing Fig. 3 and Fig. 8, the edge of described pressure plate 3 caves inward and forms sliding tray 31, this sliding tray
31 are connected on described position-limited rail 21, and can slide along described position-limited rail 21.Position-limited rail 21 can
Effectively to limit the movement locus of pressure plate 3, it is to avoid it rotates along the radial direction of housing 2, moreover it is possible to
Firmly fixed mount 4 is fixed in housing 2.
In another embodiment of the present invention, the edge of described fixed mount 4 caves inward to be formed and installs
Groove 44, described mounting groove 44 can be connected on described position-limited rail 21, and along described position-limited rail 21
Slide, thus fixed mount 4 is slipped in housing 2 along position-limited rail 21.It should be noted that described peace
The quantity of tankage 44 is the most consistent with the quantity of position-limited rail 21, at least wants the quantity of unnecessary position-limited rail 21,
So that the installation of fixed mount 4.
In a preferred embodiment of the present invention, 4 position-limited rails in described housing 2, it are evenly distributed
21, described position-limited rail 21 runs through the both ends open of this housing 2, and described stopper slot 22 is positioned at position-limited rail 21
Centre.And, the edge of described fixed mount 4 caves inward and forms 4 equally distributed mounting grooves
44, this mounting groove 44 can be connected on described position-limited rail 21, and slides along described position-limited rail 21.
When mounting and fixing support 4, the mounting groove 44 of fixed mount 4 is connected on position-limited rail 21, fixed mount 4
Slip in housing 2 along position-limited rail 21, until it reaches at stopper slot 22, then rotary fixing frame 4,
The edge making fixed mount 4 snaps in this stopper slot 22, thus described fixed mount 4 is securely fixed in shell
In body 2.
In another embodiment of the present invention, the edge of described fixed mount 4 is provided with a locating slot
45, when this locating slot 45 with stopper slot 22 on time, the edge of described fixed mount 4 snaps in stopper slot 22
In, thus fixed mount 4 is fixed on position-limited rail 2.Visible, this locating slot 45 is easily installed fixed mount
4 so that it is with position-limited rail 2 precise positioning.Preferably, described locating slot 45 is positioned at two mounting grooves 44
Middle.This position-limited rail 2 has multiple effect: 1, during mounting and fixing support, limits the motion rail of fixed mount
Mark, it is simple to mounting and fixing support；2, after rotating fixed mount, fixed mount is limited by guide rail, plays fixing work
With.
In a preferred embodiment of the invention, described housing 2 is cylindrical, described fixed mount 4
Edge is rounded, described fixed mount 4 has been evenly distributed 4 passages 41, wherein, has been oppositely arranged
2 passages 41 opened by same pressure plate or close.It is further preferable that described fixed mount 4
Including circular frame 46, laminating axle 47 and the second guide rail pole 42, described laminating axle 47 is positioned at circular frame
In 46, circle frame 46 being separated to form four passages 41, the second guide rail pole 42 is positioned at laminating axle
The both side surface of 47.Alternatively, described laminating axle 47 in cross, the second guide rail pole 42 and cross
The cross point of laminating axle 47 is connected.It is further preferable that described mounting groove 44 is positioned at same with laminating axle 47
On straight line, to strengthen the fastness of this fixed mount 4.
In a preferred embodiment of the invention, described every piece of pressure plate 3 is by 2 pieces of fanning strips 33 groups
Becoming, the angle of this fanning strip 33 is 95-120 °, and the circle centre position of described 2 pieces of fanning strips 33 passes through guide rail
Hole 32 connects, and this guide rail hole 32 is through the second guide rail pole 42, and can slide along the second guide rail pole 42
Dynamic, it is each provided with a sliding tray 31 at the outer ledge of described fanning strip 33.
As a preferred embodiment of the present invention, the angle of fanning strip 33 is 100 °, and cross is fitted
The angle of axle 47 is 90 ° so that fanning strip 33 can all cover passage 41, keeps without pressure
Sealing during difference.
In time without draught head, pressure plate 3 adds 4 holding laminatings with fixing under the pressure effect of spring 5；Deposit
When draught head, the pressure plate 3 of hyperbar side is blocked by fixed mount and remains stationary as, the pressure of low atmospheric pressure side
Sheet 3 extrusion spring 5 under atmospheric pressure effect moves, thus turns on passage 41, carries out air pressure benefit
Repay.
In yet another embodiment of the present invention, it is provided with blinker at the outer ledge of described air inlet grill 12
11, for making the opening of described air inlet grill 12 along the axial direction of described windshield cover 1, see Fig. 4
And Fig. 5.Preferably, described blinker 11 is curved, it is possible to effectively prevent wind circulating pair in housing 2
The impact that pressure plate 3 causes.This device ensure that the break-make of passage 41 is only affected by draught head,
And Bidirectional gas pressure compensation can be carried out.
Alternatively, the opening part of described housing 2 is by the female thread of external screw thread 23 with described windshield cover 1
15 docking, to improve the firmly installing property of windshield cover 1 and housing 2.
As it has been described above, the air-pressure balancing device that the present invention provides disclosure satisfy that air pressure balance is wanted by device
Ask.During thermocycling, when there is draught head inside and outside device, it is possible to open air duct and enter
Row atmospheric pressure compensating.Time inside and outside device without draught head, it is possible to air duct is closed, plays sealing thermal insulation
Effect.This device can also effectively eliminate the impact that air pressure balance is controlled to produce by circulated air flowing, has
Time without pressure reduction good airproof performance, accurately compensate air pressure, the feature such as easy for installation.
Those of ordinary skill in the field are it is understood that the foregoing is only the specific embodiment of the present invention
, be not limited to the present invention, all within the spirit and principles in the present invention, that is done any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. an air-pressure balancing device, it is characterised in that include two windshield covers, the shell of both ends open
Body, two pieces of pressure plates, fixed mount and spring, described windshield cover is placed on the both ends open of described housing respectively
Place, described windshield cover offers several air inlet grills, and the inner surface of this windshield cover is provided with first and leads
Rail bar；
Described fixed mount is positioned at housing, and the inwall of described housing is close at the edge of described fixed mount, described
Offering passage on fixed mount, the both sides of described fixed mount are respectively arranged with the second guide rail pole, and described
Two guide rail poles and the first guide rail pole are mutually butted；Described pressure plate is each passed through the second guide rail pole of both sides,
And can slide along the second guide rail pole, thus it is used for opening or close described passage；Described spring
It is socketed on the first guide rail pole and the outer surface of the second guide rail pole, for extruding described towards the direction of passage
Pressure plate.
Air-pressure balancing device the most according to claim 1, it is characterised in that arrange in described housing
Limited location rail, described position-limited rail is provided with stopper slot, and it is spacing that the edge of described fixed mount can snap in this
In groove, thus described fixed mount is fixed on this position-limited rail；The edge of described pressure plate caves inward
Forming sliding tray, this sliding tray is connected on described position-limited rail, and can slide along described position-limited rail.
Air-pressure balancing device the most according to claim 2, it is characterised in that the limit of described fixed mount
Cave inward at edge formation mounting groove, and described mounting groove can be connected on described position-limited rail, and along institute
Stating position-limited rail to slide, thus slip in housing by fixed mount along position-limited rail, the quantity of described mounting groove is big
In or equal to the quantity of described position-limited rail.
Air-pressure balancing device the most according to claim 3, it is characterised in that in described housing uniformly
4 position-limited rails are distributed, described position-limited rail runs through the both ends open of this housing, and described stopper slot is positioned at
The centre of position-limited rail；The edge of described fixed mount caves inward and forms 4 equally distributed mounting grooves,
This mounting groove can be connected on described position-limited rail, and slides along described position-limited rail.
Air-pressure balancing device the most according to claim 2, it is characterised in that the limit of described fixed mount
A locating slot it is provided with at edge, when this locating slot and stopper slot are on time, the edge card of described fixed mount
Enter in stopper slot, thus fixed mount is fixed on position-limited rail.
Air-pressure balancing device the most according to claim 1, it is characterised in that described housing is cylinder
Shape, the edge of described fixed mount is rounded, and described fixed mount has been evenly distributed 4 passages, its
In, 2 passages being oppositely arranged are opened by same pressure plate or are closed.
Air-pressure balancing device the most according to claim 6, it is characterised in that described fixed mount includes
Circular frame, laminating axle and the second guide rail pole, described laminating axle is positioned at circular frame, by circle frame
Being separated to form four passages, the second guide rail pole is positioned at the both side surface of laminating axle.
Air-pressure balancing device the most according to claim 2, it is characterised in that every piece of pressure plate by
2 pieces of fanning strip compositions, the angle of this fanning strip is 95-120 °, and the circle centre position of described 2 pieces of fanning strips leads to
Crossing guide rail hole to connect, this guide rail hole passes the second guide rail pole, and can slide along the second guide rail pole, institute
State and at the outer ledge of fanning strip, be each provided with a sliding tray.
Air-pressure balancing device the most according to claim 1, it is characterised in that outside described air inlet grill
Blinker it is provided with, for making the opening axial side along described windshield cover of described air inlet grill at lateral edges
To.
Air-pressure balancing device the most according to claim 1, it is characterised in that opening of described housing
Docked by the female thread of external screw thread with described windshield cover at Kou.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291856.3A CN104941697B (en) | 2015-06-01 | 2015-06-01 | A kind of air-pressure balancing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291856.3A CN104941697B (en) | 2015-06-01 | 2015-06-01 | A kind of air-pressure balancing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104941697A CN104941697A (en) | 2015-09-30 |
| CN104941697B true CN104941697B (en) | 2016-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510291856.3A Active CN104941697B (en) | 2015-06-01 | 2015-06-01 | A kind of air-pressure balancing device |
Country Status (1)
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| CN (1) | CN104941697B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019674B (en) * | 1990-05-29 | 1992-12-30 | 机械电子工业部兰州石油机械研究所 | The gas balance and the safety guard thereof of oil pumper |
| US20040030294A1 (en) * | 2001-11-28 | 2004-02-12 | Mahurkar Sakharam D. | Retractable needle single use safety syringe |
| CN2723788Y (en) * | 2004-06-24 | 2005-09-07 | 赵鹤鸣 | Pneuamtic balance automatic control valve |
| CN102427208B (en) * | 2011-10-14 | 2014-11-05 | 株洲南车时代电气股份有限公司 | High-pressure electrical equipment box pressure relief device and method thereof |
| CN203178051U (en) * | 2012-12-31 | 2013-09-04 | 浙江工业大学 | Ultralow-frequency modal test gravitational equilibrium system |
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2015
- 2015-06-01 CN CN201510291856.3A patent/CN104941697B/en active Active
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| CN104941697A (en) | 2015-09-30 |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |
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