CN114607816A - Pressure balance structure and environmental test chamber - Google Patents
Pressure balance structure and environmental test chamber Download PDFInfo
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- CN114607816A CN114607816A CN202210224607.2A CN202210224607A CN114607816A CN 114607816 A CN114607816 A CN 114607816A CN 202210224607 A CN202210224607 A CN 202210224607A CN 114607816 A CN114607816 A CN 114607816A
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- hole
- pressure balance
- fixing plate
- pressure
- elastic member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/194—Equalising valves predominantly for tanks weight-loaded
Abstract
The invention belongs to the technical field of environmental test chambers, and discloses a pressure balance structure and an environmental test chamber. The pressure balance structure is applied to an environmental test chamber and comprises a first fixing plate, a second fixing plate and a pressure balance assembly, wherein a first through hole is formed in the first fixing plate, a second through hole is formed in the second fixing plate, the pressure balance assembly is abutted between the first fixing plate and the second fixing plate, the pressure balance assembly has a first state and a second state, the first through hole and the second through hole can be communicated when the pressure balance assembly is in the first state, and the first through hole and the second through hole can be isolated when the pressure balance assembly is in the second state. By using the pressure balance structure provided by the invention, the first state and the second state can be respectively realized in the operation process, so that the first through hole and the second through hole can be communicated/isolated, the pressure relief or sealing effect is realized, and the pressure balance between the first through hole and the second through hole is further ensured.
Description
Technical Field
The invention relates to the technical field of environmental test chambers, in particular to a pressure balance structure and an environmental test chamber.
Background
In the process of cooling the environmental test chamber, the pressure in the chamber is reduced, and when the temperature in the chamber is reduced to-60 ℃, if the sealing in the chamber is good (all holes are completely blocked, including drain holes), the internal and external pressure difference reaches 30kpa, and the deformation of the chamber body can be caused; during the temperature rise, the pressure in the box rises, and when the temperature reaches 150 ℃, if the sealing in the box is good (all holes are completely blocked, including drain holes), the internal-external pressure difference reaches 44 kpa. The pressure balancing device is used as a device for communicating the test space and the external space and is used for balancing the pressure inside and outside the test chamber.
The pressure balancing device in the existing environment test equipment is generally a pipeline structure, one end of the pipeline structure is an inner pipe, an opening is positioned in a box, the other end of the pipeline structure is an outlet pipe, and the opening is positioned outside the box. Because the inside and the outside of the pressure balancing device are directly communicated without any sealing performance, the opening of an outlet pipe of the pressure balancing device continuously emits steam during a high-temperature test, and the opening of an inner pipe of the pressure balancing device continuously frosts during a low-temperature test. In addition, the pressure equalisation device also results in insufficient temperature/humidity stability during the test.
Disclosure of Invention
The invention aims to provide a pressure balancing structure, which is used for at least solving the problem that the existing pressure balancing device cannot realize sealing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pressure balance structure applied to an environmental test chamber comprises:
the first fixing plate is provided with a first through hole;
the second fixing plate is provided with a second through hole;
the pressure balance assembly abuts between the first fixing plate and the second fixing plate respectively, the pressure balance assembly is provided with a first state and a second state, the first through hole and the second through hole can be communicated when the pressure balance assembly is in the first state, and the first through hole and the second through hole can be isolated when the pressure balance assembly is in the second state.
In some embodiments of the present invention, the pressure balancing assembly includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are disposed in a fitting manner, and the first elastic member and the second elastic member are matched with each other and can communicate/isolate the first through hole and the second through hole.
In some embodiments of the present invention, a first fitting hole is formed on the first elastic member, a second fitting hole is formed on the second elastic member, and an orthographic projection of the first fitting hole and an orthographic projection of the second fitting hole are arranged in a staggered manner.
In some embodiments of the present invention, each of the first and second fitting holes includes a first hole portion and a second hole portion, and the first hole portion and the second hole portion are arranged to intersect.
In some embodiments of the present invention, the pressure balance structure includes a cylinder, an inner cavity of the cylinder is respectively configured to communicate with the second through hole and the outlet pipe, an outlet end of the cylinder is connected to a side of the second fixing plate away from the pressure balance assembly, and an inlet end of the cylinder is configured to be connected to the outlet pipe.
In some embodiments of the present invention, the pressure balancing structure includes a fixing plate group, a portion of the fixing plate group is connected to the outer side of the cylinder, and another portion of the fixing plate group is connected to the outer side of the outlet pipe.
In some embodiments of the present invention, the fixing plate set includes a plurality of fixing plates, and the plurality of fixing plates are spaced apart from each other in a circumferential direction of the cylinder.
In some embodiments of the present invention, the pressure balance assembly includes at least one turning group, at least one turning group is sequentially arranged in a vertical direction, at least one turning group can communicate the first through hole and the second through hole when in the first state, and at least one turning group can isolate the first through hole and the second through hole when in the second state.
In some embodiments of the present invention, the turning assembly includes a turning plate and a rotating shaft, the rotating shaft is disposed through one end of the turning plate and can rotate along the rotating shaft, and two ends of the rotating shaft are connected to the second fixing plate.
The invention also provides an environmental test chamber, which comprises:
an inner tube;
the outlet end of the inner pipe is connected with the inlet end of the outlet pipe;
the inlet end of the pressure balance structure is connected with the outlet end of the outlet pipe, the outlet end of the pressure balance structure is communicated with the outside, and the pressure balance structure is the pressure balance structure.
The invention has the beneficial effects that:
by using the pressure balance structure disclosed by the invention, a combination form of the first fixing plate, the second fixing plate and the pressure balance assembly is adopted, the first fixing plate and the second fixing plate can fix the pressure balance assembly, the pressure balance assembly can respectively realize a first state and a second state in the operation process, further can communicate/isolate the first through hole and the second through hole, and realizes the pressure relief or sealing effect, further the pressure balance between the first through hole and the second through hole is ensured, the pressure balance structure disclosed by the invention integrates the sealing function and the pressure relief function into a whole, and the reliability and the universality of an environmental test box are improved.
Drawings
FIG. 1 is a schematic view of a partial structure of an environmental test chamber according to the present invention;
FIG. 2 is a schematic diagram of the overall structure of the pressure balance structure of FIG. 1;
FIG. 3 is an exploded view of the pressure equalization structure of FIG. 1;
FIG. 4 is a schematic diagram of an embodiment of a pressure balancing assembly of the pressure balancing structure of FIG. 1;
fig. 5 is a schematic structural view of another embodiment of a pressure balance assembly of the pressure balance structure of fig. 1.
In the figure:
100. a pressure balancing structure; 10. a first fixing plate; 11. a first through hole; 20. a second fixing plate; 21. a second through hole; 31. a first elastic member; 311. a first mating hole; 3111. a first hole portion; 3112. a second hole portion; 32. a second elastic member; 321. a second mating hole; 33. turning over the group; 331. a turnover plate; 332. a rotating shaft;
200. discharging a pipe;
300. an inner tube.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
FIG. 1 is a schematic view of a part of the structure of an environmental test chamber according to the present invention. Fig. 2 is a schematic view of the overall structure of the pressure balance structure in fig. 1. Fig. 3 is an exploded view of the pressure equalization structure of fig. 1. As shown in fig. 1, 2 and 3, the pressure balance structure 100 of the present invention, applied to an environmental test chamber, includes a first fixing plate 10, a second fixing plate 20 and a pressure balance assembly, wherein the first fixing plate 10 is provided with a first through hole 11, the second fixing plate 20 is provided with a second through hole 21, the pressure balance assembly abuts between the first fixing plate 10 and the second fixing plate 20, the pressure balance assembly has a first state and a second state, the first through hole 11 and the second through hole 21 can be communicated when the pressure balance assembly is in the first state, and the first through hole 11 and the second through hole 21 can be isolated when the pressure balance assembly is in the second state.
By using the pressure balance structure 100 in the invention and adopting a combination form of the first fixing plate 10, the second fixing plate 20 and the pressure balance assembly, the first fixing plate 10 and the second fixing plate 20 can fix the pressure balance assembly, the pressure balance assembly can respectively realize a first state and a second state in the operation process, further can communicate/isolate the first through hole 11 and the second through hole 21, and realize the pressure relief or sealing effect, further ensure the pressure balance between the first through hole 11 and the second through hole 21, the pressure balance structure 100 in the invention integrates two functions of sealing and pressure relief, and improves the reliability and the universality of the environmental test box.
In some embodiments of the present invention, as shown in fig. 2 and 3, the pressure balancing assembly includes a first elastic member 31 and a second elastic member 32, the first elastic member 31 and the second elastic member 32 are disposed in a fitting manner, and the first elastic member 31 and the second elastic member 32 are matched with each other and can communicate/isolate the first through hole 11 and the second through hole 21. In this embodiment, the first elastic member 31 and the second elastic member 32 are both made of elastic plastic material, preferably silicone material, and have a thickness of 1mm to 4mm, preferably 1mm to 2 mm. The two are kept in original shapes (i.e. the first state) under normal conditions, and the operation of isolating the first through hole 11 and the second through hole 21 can be realized, thereby achieving the purpose of sealing. When the pressure difference in the first through hole 11 and the second through hole 21 exceeds the bearing range of the first elastic piece 31 and the second elastic piece 32, the pressure difference acts on the first elastic piece 31 and the second elastic piece 32, and the first elastic piece 31 and the second elastic piece 32 are elastic and can be matched with each other, so that the second state can be achieved in the deformation process, namely, the first through hole 11 and the second through hole 21 are communicated, and finally the purpose of pressure relief is achieved.
In some embodiments of the present invention, as shown in fig. 2 and 3, the first elastic member 31 is provided with a first fitting hole 311, the second elastic member 32 is provided with a second fitting hole 321, and an orthogonal projection of the first fitting hole 311 and an orthogonal projection of the second fitting hole 321 are offset. In this embodiment, when the pressure balance assembly is in the first state, the first elastic member 31 and the second elastic member 32 are attached to each other, and meanwhile, due to the dislocation arrangement, the first through hole 11 and the second through hole 21 can be isolated, so that the sealing effect is realized. When the pressure balance assembly is in the second state, the air pressure difference between the first through hole 11 and the second through hole 21 is large, and the first elastic part 31 and the second elastic part 32 can be acted respectively, so that the two elastic parts are deformed, and finally the first matching hole 311 is communicated with the second matching hole 321, so that the first through hole 11 and the second through hole 21 are communicated, and the purpose of pressure relief is achieved.
In some embodiments of the present invention, as shown in fig. 2 and 3, each of the first and second fitting holes 311 and 321 includes a first hole portion 3111 and a second hole portion 3112, and the first and second hole portions 3111 and 3112 are arranged to intersect. In this embodiment, the included angle between the first hole portion 3111 and the second hole portion 3112 is 90 degrees, that is, the first matching hole 311 and the second matching hole 321 are both cross-shaped holes, and the two cross-shaped holes in this embodiment may be combined in a shape of a Chinese character 'mi', that is, the included angle between the orthographic projection of the first matching hole 311 and the orthographic projection of the second matching hole 321 is 45 degrees, although there is an overlapping position of a small hole portion in the middle of the two cross-shaped holes, the accuracy of the data result of the environmental test chamber is not affected.
Specifically, in other embodiments of the present invention, the first mating hole 311 and the second mating hole 321 may also be a straight hole or a hole structure with other shapes, and any offset arrangement of the first mating hole 311 and the second mating hole 321 falls within the protection scope of the present invention.
In some embodiments of the present invention, as shown in fig. 2 and 3, the pressure balance structure 100 includes a cylinder, an inner cavity of the cylinder is respectively used for communicating with the second through hole 21 and the outlet pipe 200 (in this embodiment, an outlet direction of the outlet pipe 200 is vertically arranged with respect to a horizontal direction), an outlet end of the cylinder is connected with a side of the second fixing plate 20 away from the pressure balance assembly, and an inlet end of the cylinder is used for connecting with the outlet pipe 200. In this embodiment, the center line of the first fixing plate 10, the center line of the second fixing plate 20, the center line of the first elastic member 31, the center line of the second elastic member 32, the center line of the cylinder, and the center line of the outlet tube 200 are all coaxially disposed, the cylinder is used for connecting the outlet tube 200 and the pressure balance assembly, the inlet end of the cylinder is conveniently connected with the inner tube 300, in this embodiment, a welding manner may be adopted for fixing, and the stability between the pressure balance structure 100 and the outlet tube 200 is improved.
In some embodiments of the present invention, as shown in fig. 2 and 3, the pressure balancing structure 100 includes a fixing plate group, a portion of which is connected to the outer side of the cylinder, and another portion of which is connected to the outer side of the outlet pipe 200. In this embodiment, the fixing plate set can be coupled to a fastener (e.g., a bolt or a screw) to connect the outer side of the outlet tube 200 and the outer side of the cylinder, and the rigid connection mode can simultaneously achieve both the dismounting efficiency and the stability, thereby improving the connection reliability between the pressure balance structure 100 and the outlet tube 200. In other embodiments, the fixing plate set can also be welded to connect the cylinder and the outlet tube 200, respectively.
In some embodiments of the present invention, as shown in fig. 2 and 3, the fixing plate set includes a plurality of fixing plates, and the plurality of fixing plates are spaced apart from each other in a circumferential direction of the cylinder. In this embodiment, a plurality of fixed plates evenly set up along the circumference of barrel, can carry out even and stable connection to exit tube 200 and barrel in circumference, have promoted the reliability of connecting.
Specifically, in this embodiment, aluminum foil paper can be further used to be wound on the outer side of the fixed plate group to seal between the outlet pipe 200 and the cylinder body, so that the sealing performance of the pressure balance structure 100 and the outlet pipe 200 is improved.
In some embodiments of the present invention, as shown in fig. 4 and 5, the pressure balancing assembly includes at least one inversion set 33, the at least one inversion set 33 is sequentially arranged in a vertical direction, the at least one inversion set 33 can communicate the first through hole 11 with the second through hole 21 in the first state, and the at least one inversion set 33 can isolate the first through hole 11 from the second through hole 21 in the second state. In the present embodiment, the flip group 33 is vertically disposed in the first state because the isolation between the first through hole 11 and the second through hole 21 can be ensured due to the self-gravity. When the pressure in the second through hole 21 is large, the turnover group 33 can be changed into the second state, that is, the turnover group 33 is turned over for a certain angle and is communicated with the first through hole 11 and the second through hole 21, and the pressure relief effect is further realized. The turning group 33 in this embodiment may be a louver structure.
In some embodiments of the present invention, as shown in fig. 4 and 5, the flipping unit 33 includes a flipping board 331 and a rotating shaft 332, the rotating shaft 332 is disposed through one end of the flipping board 331 and the flipping board 331 can rotate along the rotating shaft 332, and two ends of the rotating shaft 332 are connected to the second fixing plate 20. In an embodiment of the present invention, only one turning group 33 is provided, that is, the turning plate 331 and the rotating shaft 332, the hole area of the first through hole 11 and the hole area of the second through hole 21 are respectively smaller than or equal to the planar area of the turning plate 331, that is, when the turning plate 331 is in the first state (that is, in the vertical position, the center line of the outlet end of the outlet pipe 200 in this embodiment is horizontally disposed), the first through hole 11 and the second through hole 21 can be isolated, and when the pressure of the second through hole 21 is relatively high, the turning plate 331 can be blown and the turning plate 331 can be rotated toward the direction away from the second through hole 21, so as to communicate the first through hole 11 and the second through hole 21 and achieve the purpose of pressure relief. In another embodiment of the present invention, a plurality of turning groups 33 are provided, the turning groups 33 are sequentially arranged in a vertical direction, and the turning plate 331 of each turning group 33 in the first state is kept vertically arranged due to its own weight, so as to ensure an isolated state between the first through hole 11 and the second through hole 21, thereby achieving a sealing effect. When the pressure in the second through hole 21 is large, each turning group 33 can be changed into the second state, that is, the turning plate 331 of each turning group 33 is turned by a certain angle and is communicated with the first through hole 11 and the second through hole 21, so that the pressure relief effect is achieved.
Specifically, in other embodiments of the present invention, as shown in fig. 4 and 5, a combination manner of at least one turning group 33, an elbow connection pipe and an outlet pipe 200 may also be adopted, an outlet direction of the elbow connection pipe is consistent with a horizontal direction, an inlet end of the elbow connection pipe is communicated with the outlet pipe 200, a planar area of the at least one turning group 33 is the same as a cross-sectional area of an outlet end of the elbow connection pipe, a rotating shaft 332 of the turning group 33 sequentially penetrates through the outlet end of the elbow connection pipe and the turning plate 331, in general, the turning plate 331 can be vertically disposed due to its own gravity, that is, sealing in the first state is achieved, when a pressure at the inlet end of the elbow connection pipe is relatively high, the turning plate 331 can be pushed, and an effect of communicating the outside with the outlet pipe 200 is achieved, thereby achieving pressure relief in the second state. In this embodiment, a plurality of turning groups 33 may be provided and arranged in order in the vertical direction.
Specifically, in some embodiments of the present invention, the diameter of the first through hole 11 and the diameter of the second through hole 21 are not greater than the inner diameter of the cylinder, and preferably, the diameter of the first through hole 11 and the diameter of the second through hole 21 are equal to the inner diameter of the cylinder, which facilitates the connection between the cylinder and the second fixing plate 20, and also facilitates the connection of the first fixing plate 10, the second fixing plate 20, the first elastic member 31, and the second elastic member 32 by using fixing members such as bolts (preferably, four bolts in this embodiment).
Further, the operation principle of the pressure balance structure 100 of the present invention is: when the pressure of the second through hole 21 is not large and the pressure relief operation is not needed, the first elastic member 31 and the second elastic member 32 are in the original state, and the respective matching holes of the first elastic member 31 and the second elastic member 32 are arranged in a staggered manner, so that the purpose of isolating the first through hole 11 from the second through hole 21 can be achieved, and the sealing effect is achieved. When the pressure difference between the first through hole 11 and the second through hole 21 is large, the pressure difference acts on the two elastic members and deforms the two elastic members, and finally the matching holes of the first elastic member 31 and the second elastic member 32 are communicated, so that the first through hole 11 and the second through hole 21 are communicated, and the pressure relief function is realized. After the pressure relief is completed, the first elastic member 31 and the second elastic member 32 will return to the original state again, and the sealing effect is achieved again.
The invention also provides an environmental test chamber, which comprises:
an inner tube 300;
an outlet pipe 200, wherein the outlet end of the inner pipe 300 is connected with the inlet end of the outlet pipe 200;
the inlet end of the pressure balance structure 100 is connected to the outlet end of the outlet pipe 200, the outlet end of the pressure balance structure 100 is communicated with the outside, and the pressure balance structure 100 is the pressure balance structure 100.
By using the environmental test chamber of the invention and adopting the combination of the inner tube 300, the outlet tube 200 and the pressure balance structure 100, when the pressure inside and outside the environmental test chamber is unbalanced, the pressure can be released through the matching holes on the two elastic pieces in the pressure balance assembly, thereby achieving pressure balance. After environmental test case state is stable, when interior external pressure kept little balance, two elastic component recovered to original shape and were in relative encapsulated situation in the pressure balance subassembly this moment, and the separation has improved the not enough problem of temperature/humidity stability in the environmental test case internal test space to a certain extent in the outside air passes through pressure balance structure 100 and flows into the environmental test case incasement and then lead to frosting among the low temperature test process.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A pressure balance structure applied to an environmental test chamber is characterized by comprising:
the first fixing plate (10), wherein a first through hole (11) is formed in the first fixing plate (10);
the second fixing plate (20), the second fixing plate (20) is provided with a second through hole (21);
the pressure balance assembly abuts between the first fixing plate (10) and the second fixing plate (20) respectively, the pressure balance assembly has a first state and a second state, the first through hole (11) and the second through hole (21) can be communicated when the pressure balance assembly is in the first state, and the first through hole (11) and the second through hole (21) can be isolated when the pressure balance assembly is in the second state.
2. The pressure balance structure of claim 1, wherein the pressure balance assembly comprises a first elastic member (31) and a second elastic member (32), the first elastic member (31) and the second elastic member (32) are arranged in a fitting manner, and the first elastic member (31) and the second elastic member (32) are mutually matched and can communicate/isolate the first through hole (11) and the second through hole (21).
3. The pressure balance structure of claim 2, wherein the first elastic member (31) is provided with a first fitting hole (311), the second elastic member (32) is provided with a second fitting hole (321), and an orthographic projection of the first fitting hole (311) and an orthographic projection of the second fitting hole (321) are arranged in a staggered manner.
4. The pressure equalizing structure of claim 3, wherein the first and second fitting holes (311, 321) each include a first hole portion (3111) and a second hole portion (3112), and the first and second hole portions (3111, 3112) are arranged to intersect.
5. The pressure balance structure of claim 1, wherein the pressure balance structure (100) comprises a cylinder, the inner cavity of the cylinder is respectively used for communicating with the second through hole (21) and the outlet pipe (200), the outlet end of the cylinder is connected with one side of the second fixing plate (20) far away from the pressure balance assembly, and the inlet end of the cylinder is used for being connected with the outlet pipe (200).
6. A pressure equalizing structure according to claim 5, characterized in that the pressure equalizing structure (100) comprises a set of fixed plates, one part of which is connected to the outer side of the cylinder and the other part of which is connected to the outer side of the outlet pipe (200).
7. The pressure balance structure of claim 5, wherein the set of fixed plates comprises a plurality of fixed plates, and the plurality of fixed plates are arranged at intervals along the circumferential direction of the cylinder.
8. Pressure equalizing structure according to claim 1, characterized in that the pressure equalizing assembly comprises at least one flip group (33), at least one flip group (33) being arranged in a vertical order, at least one flip group (33) being able to communicate the first through hole (11) with the second through hole (21) in the first state, at least one flip group (33) being able to isolate the first through hole (11) from the second through hole (21) in the second state.
9. The pressure balance structure of claim 8, wherein the turning group (33) comprises a turning plate (331) and a rotating shaft (332), the rotating shaft (332) is disposed through one end of the turning plate (331) and the turning plate (331) can rotate along the rotating shaft (332), and two ends of the rotating shaft (332) are connected to the second fixing plate (20).
10. An environmental test chamber, comprising:
an inner tube (300);
the outlet end of the inner pipe (300) is connected with the inlet end of the outlet pipe (200);
the inlet end of the pressure balance structure (100) is connected with the outlet end of the outlet pipe (200), the outlet end of the pressure balance structure (100) is communicated with the outside, and the pressure balance structure (100) is the pressure balance structure (100) as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210224607.2A CN114607816B (en) | 2022-03-09 | 2022-03-09 | Pressure balance structure and environmental test chamber |
| CN202310103168.4A CN116066608B (en) | 2022-03-09 | 2022-03-09 | Pressure balance structure and environment test box |
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| CN202210224607.2A CN114607816B (en) | 2022-03-09 | 2022-03-09 | Pressure balance structure and environmental test chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115487878A (en) * | 2022-10-20 | 2022-12-20 | 江苏拓米洛环境试验设备有限公司 | Pressure balancing device and environmental test chamber |
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| CN213871270U (en) * | 2020-12-07 | 2021-08-03 | 无锡市兰博试验设备有限公司 | Pressure balance and pressure relief device of environmental test chamber |
| CN113694973A (en) * | 2021-10-15 | 2021-11-26 | 重庆哈丁环境试验技术股份有限公司 | Bidirectional pressure balancing device and environmental test chamber |
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| CN213871270U (en) * | 2020-12-07 | 2021-08-03 | 无锡市兰博试验设备有限公司 | Pressure balance and pressure relief device of environmental test chamber |
| CN113694973A (en) * | 2021-10-15 | 2021-11-26 | 重庆哈丁环境试验技术股份有限公司 | Bidirectional pressure balancing device and environmental test chamber |
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| CN115487878A (en) * | 2022-10-20 | 2022-12-20 | 江苏拓米洛环境试验设备有限公司 | Pressure balancing device and environmental test chamber |
| CN115487878B (en) * | 2022-10-20 | 2023-08-29 | 江苏拓米洛高端装备股份有限公司 | Pressure balancing device and environment test box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114607816B (en) | 2023-04-07 |
| CN116066608A (en) | 2023-05-05 |
| CN116066608B (en) | 2023-11-24 |
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