CN113074901A - Box structure with suction pipeline and adopting series guide rails - Google Patents
Box structure with suction pipeline and adopting series guide rails Download PDFInfo
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- CN113074901A CN113074901A CN202110629218.3A CN202110629218A CN113074901A CN 113074901 A CN113074901 A CN 113074901A CN 202110629218 A CN202110629218 A CN 202110629218A CN 113074901 A CN113074901 A CN 113074901A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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Abstract
The invention discloses a box body structure with a suction pipeline and adopting a series guide rail, which comprises a first box body, a second box body, a third box body and a suction pipeline, wherein the first box body, the second box body, the third box body and the suction pipeline are mutually communicated; the second box body can move on the first guide rail, the third box body can move on the second guide rail, the third box body can slide on the suction pipeline, and the first box body, the second box body and the third box body have at most four structural states. The invention adopts a series structure, and solves the technical problem faced by a box body structure with a suction pipeline.
Description
Technical Field
The invention relates to the field of aerodynamic wind tunnel tests, in particular to a box body structure with a suction pipeline and adopting a series guide rail.
Background
In the field of special experimental aerodynamics, pipeline suction is required to maintain the pressure of a box body, the Mach number of an aircraft in a wind tunnel test or flight is simulated through the pressure difference between the box body and the surrounding environment, and the flow and the thrust of a specific experimental model are calibrated. In the test process, the box body needs to be opened or closed frequently, so that workers can enter the box body to carry out experiment operation or instrument and equipment maintenance. The box structure with the suction pipeline is realized, and the following difficulties are encountered:
firstly, the box body can accurately calibrate the flow rate only by keeping good sealing performance, and the movable part and the static part of the box body are subjected to frequent opening and closing operations, so that reliable sealing measures are needed to ensure the sealing performance of the closed box body, and especially, due to the existence of a suction pipeline, the synchronous sealing between the movable part and the suction pipeline of the box body is also needed to be solved;
secondly, the impact of the moving part of the box body on the static part in the opening or closing process must be very small, and the severe impact can influence the precision of the measuring result and even damage the balance due to the arrangement of a precise force measuring balance and an advanced testing instrument on the static part of the box body;
thirdly, the opening and closing operation of the box body must be efficient and reliable, and the opening and closing operation of the box body is a key link influencing the experimental efficiency because the experimental operation and the overhaul of the equipment heavily depend on the opening and closing operation of the box body;
fourthly, the simultaneous or single opening and closing operation of a plurality of sections is realized, and the test instruments and equipment are distributed in the whole box body, so that the opening and closing operation of one section cannot meet the operation and maintenance requirements of all the test instruments and equipment;
fifthly, the device has a safety protection function, and due to the existence of the suction pipeline, reliable measures are required to ensure that the movable part of the box body does not move unexpectedly due to the suction force generated by the suction pipeline, otherwise, the experimental safety is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problems of the box body structure with the suction pipeline, and designs the box body structure with the suction pipeline, which adopts a series guide rail.
In order to achieve the purpose, the invention adopts the following technical scheme:
a case structure with a suction duct using a tandem guide rail, comprising: the suction device comprises a first box body, a suction pipeline, a first guide rail, a second box body and a third box body, wherein the first box body, the suction pipeline, the first guide rail and the second guide rail are fixedly arranged on the same reference surface;
a cover plate is arranged at one end of the second box body, the other end of the second box body is open, the open end of the second box body is communicated with the first box body, a third box body is communicated with the second box body through a pipeline penetrating through the cover plate, a stop component is arranged on the pipeline, the third box body, the pipeline and the cover plate are of an integral structure, one end of the third box body is sleeved on a suction pipeline, an electromagnet for locking a relative position structure of the third box body and the suction pipeline is arranged on the suction pipeline, and the other end of the suction pipeline is communicated with a vacuum environment;
the second box body can move on the first guide rail, the third box body can move on the second guide rail, the third box body can slide on the suction pipeline, and the first box body, the second box body and the third box body have at most four structural states.
In the technical scheme, a first inflatable sealing gasket is arranged between the first box body and the second box body, a second inflatable sealing gasket is arranged between the third box body and the suction pipeline respectively, and the first inflatable sealing gasket and the second inflatable sealing gasket are provided with two structural states of inflation and deflation respectively.
In the technical scheme, a sliding sleeve structure is arranged on the third box body, when the third box body is communicated with the suction pipeline, the inner wall surface of the sliding sleeve structure is in contact with the end face of the electromagnet on the outer wall of the suction pipeline, and the second inflatable sealing gasket is arranged between the sliding sleeve structure and the electromagnet.
In the above technical solution, the first inflatable gasket is disposed between the connection end surfaces of the first box and the second box.
In the above technical solution, the second box is connected to the first guide rail through a slider, and an elastic member is disposed between the slider and the second box.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the box body is divided into three sections, namely a box body front section, a box body middle section and a box body tail section, wherein the box body front section is a static part, the box body middle section and the box body tail section are movable sections, and the opening and closing states of the front part and the tail part of the box body are realized through the movement of the movable sections, so that conditions are provided for experiment operation inside the box body;
the invention adopts the form that the front guide rail and the rear guide rail are connected in series, realizes the synchronous or independent opening and closing operation between the front section of the box body and the middle section of the box body, and the middle section of the box body and the tail section of the box body, and forms 4 different working modes that the middle section of the box body and the tail section of the box body are completely closed, the middle section of the box body and the tail section of the box body are synchronously opened, the middle section of the box body is static, the tail section of the box body is opened, and the middle section of the box body and the tail section;
according to the invention, the inflatable sealing rings are arranged on the connecting end faces between the front section of the box body and the middle section of the box body and between the tail section of the box body and the suction pipeline, so that the sealing problem of the large-area connecting end face is solved by utilizing the characteristics of large lifting and shrinking amount and good sealing effect of the inflatable sealing rings, the processing precision and installation precision requirements on the connecting end face are greatly reduced, and meanwhile, the problem that the sealing between the front section of the box body and the middle section of the box body and between the tail section of the box body and the suction pipeline must be simultaneously carried out under the completely closed working mode of the middle section of the box;
according to the invention, the laminated spring is arranged between the middle section of the box body and the front guide rail as elastic buffer, so that the impact acting force on the front section of the box body in the closing operation process of the middle section of the box body is greatly reduced, and meanwhile, the middle section of the box body is more stable in the operation process;
the sliding sleeve structure is adopted between the box body tail section and the suction pipeline, so that the large-stroke relative movement between the box body tail section and the suction pipeline is realized, and the effective sealing between the box body tail section and the suction pipeline can be ensured under the completely closed working mode of the box body middle section and the box body tail section;
according to the invention, the electro-permanent magnet is arranged on the suction pipeline, when the tail section of the box body moves, the demagnetization of the electro-permanent magnet is controlled by the electric control system, so that the tail section of the box body can move freely relative to the suction pipeline, and the electro-permanent magnet is controlled by the electric control system to be magnetized in a completely closed working mode of the middle section and the tail section of the box body, so that a strong magnetic acting force is generated between the suction pipeline and the tail section of the box body, and the situation that the middle section and the tail section of the box body are displaced due to the suction force generated by the suction pipeline.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a first working state of the present invention;
FIG. 2 is a schematic view of the structure of part A in FIG. 1;
FIG. 3 is a structural schematic diagram of a second working state of the present invention;
FIG. 4 is a structural schematic diagram of a third working state of the present invention;
fig. 5 is a structural diagram of a fourth operating state of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
As shown in fig. 1, the overall structure of the present invention is integrally divided into three sections, including:
the first box body 1 is arranged at the foremost end, the first box body 1 is a static section of an integral structure and is fixedly connected with a ground foundation 6, and various force measuring balances and testing instruments for testing are arranged in the first box body 1.
And the suction pipeline 5 is arranged at the rearmost end, the suction pipeline 5 is a static section of an integral structure and is fixedly connected with a ground foundation 6, and the suction pipeline 5 is communicated with a vacuum system to provide a vacuum air source for the body.
In the embodiment, a series structure is adopted, the second box 2 and the third box 4 are connected in series between the first box 1 and the suction pipeline 5, in order to realize the purpose of series connection, a first guide rail 7 and a second guide rail 9 are fixedly connected on the ground foundation 6, the second box 2 is arranged on the first guide rail 7, the third box 4 is arranged on the second guide rail 9, and one end of the third box 4 is sleeved on the suction pipeline 5.
As shown in fig. 2, it is a schematic view of a connection structure between the third casing 4 and the suction duct 5, wherein a sliding sleeve 10 is provided on the third casing 4, the sliding sleeve 10 is shown to be sleeved on the suction duct 5, and the third casing 4 can slide along the suction duct 5 through the sliding sleeve 10. An electromagnet 12 is arranged on the outer wall surface of the suction pipeline 5, and the suction pipeline 5 and the third box 4 can be locked by magnetizing the electromagnet 12, so that the third box 4 can be positioned.
In order to achieve sealing after the suction duct 5 is connected to the third casing 4, a second inflatable gasket 11 is provided between the contact end faces of the electromagnet 12 and the sliding sleeve 10, the second inflatable gasket 11 having two states, an inflated state in which the third casing 4 can slide on the suction duct 5 and an deflated state in which complete sealing between the third casing 4 and the suction duct 5 can be achieved by a large area of contact.
The second casing 2 is moved on the first guide rail 7 to change the relative position of the second casing 2 with respect to the first casing 1, and the third casing 4 is moved on the second guide rail 9 to change the relative position of the third casing 4 with respect to the second casing 2.
In this embodiment, the second box 2 is a structure with two open ends, one end of which is provided with a cover plate, the cover plate is connected with the third box 4 through a pipeline, the third box 4, the pipeline and the cover plate are connected into a whole, and the pipeline passes through the cover plate to communicate the second box 2 with the third box 4. The pipeline is provided with a stop component 3, and the stop component 3 can be various controlled valves to realize the adjustment of the gas flow in the pipeline.
A disc spring 8 is arranged between the connection of the second box body 2 and the first guide rail 7, and the disc spring 8 can reduce vibration caused by air pressure to the second box body 2 in the operation process, so that the influence on the precision of the test equipment is avoided.
The series configuration of the present embodiment has four operating states in which the relative position of the first casing 1 and the suction duct 5 is kept fixed, the second casing 2 moves on the first guide 7, and the third casing 4 moves on the second guide, thereby changing the mutual positions of the first casing 1, the second casing 2, and the third casing 4.
As shown in fig. 1, in a first working state, in this state, the first casing 1, the second casing 2, the third casing 4, and the suction duct 5 are communicated with each other, in this state, a first inflatable gasket is disposed between the connection end surfaces of the first casing 1 and the second casing 2, the first inflatable gasket is in an inflated state, and a second inflatable gasket 11 between the third casing 4 and the suction duct 5 is in an inflated state, so that the whole interior constitutes a complete sealed state. This mode is the mode of operation in which experimental tests are conducted. The electromagnet 12 is in a magnetizing state, so that a strong magnetic acting force is generated between the suction pipeline 5 and the third box 4, the second box 2 and the third box 4 are prevented from moving on the first guide rail 7 and the second guide rail 9 due to the suction force generated by the suction pipeline 5, and accidents are avoided.
As shown in fig. 3, a second operating condition, in which the first inflatable gasket and the second inflatable gasket 11 are deflated and the electromagnet 12 is demagnetized. The first box 1 and the second box 2 are separated from each other and are not connected, the second box 2 and the third box 4 are connected into a whole, the second box 2 and the third box 4 respectively move on the first guide rail 7 and the second guide rail 9 along the same direction, and the third box 4 slides on the suction pipeline 5. In this mode, personnel can enter the front end of the second box body to operate, and model installation or replacement and sensor installation or replacement are carried out. Because the sliding sleeve 10 is structured and the electromagnet 12 is in a demagnetized state, a strong magnetic force is not generated between the suction duct 5 and the third casing 4, and interference is not generated between the third casing 4 and the suction duct 5.
As shown in fig. 4, a third operating state in which the first inflatable gasket and the second inflatable gasket 11 are deflated and the electromagnet 12 is demagnetized. The second box 2 keeps connected with the first box 1, the second box 2 does not move on the first guide rail 7, the third box 4 moves on the second guide rail 9 and slides on the suction pipeline 5, and the third box 4 drives the cover plate to separate from the second box 2. In this mode, personnel can enter the rear end of the second box body to operate or overhaul the valve group. Because the sliding sleeve 10 is structured and the electromagnet 12 is in a demagnetized state, a strong magnetic force is not generated between the suction duct 5 and the third casing 4, and interference is not generated between the third casing 4 and the suction duct 5.
As shown in fig. 5, a fourth operating condition in which the first inflatable gasket and the second inflatable gasket 11 are deflated and the electromagnet 12 is demagnetized. The second box 2 moves on the first guide rail 7, so that the first box 1 and the second box 2 are separated and disconnected with each other, the third box 4 moves on the second guide rail 9, the third box 4 slides on the suction pipeline 5, and the third box 4 drives the cover plate to be separated and disconnected with the end part of the second box 2. In the state, personnel can enter the front end and the rear end of the second box body simultaneously to operate or overhaul the valve group to perform parallel operation. Because the sliding sleeve 10 is structured and the electromagnet 12 is in a demagnetized state, a strong magnetic force is not generated between the suction duct 5 and the third casing 4, and interference is not generated between the third casing 4 and the suction duct 5.
In the switching process of four different working modes, the inflatable sealing ring is in an uninflated state, the electro-permanent magnet is in a demagnetized state, strong magnetic acting force is not generated between the suction pipeline and the third box body, and the sliding sleeve structure between the third box body and the suction pipeline ensures that the third box body and the suction pipeline can move relatively in a large stroke. The spring that folds of installation has formed elastic buffer between second box and first guide rail, has reduced the second box by a wide margin in closed operation process, to the impact effort of box anterior segment, makes the box middle section more steady at the operation in-process simultaneously.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (9)
1. The utility model provides an adopt box structure of taking suction duct of series connection guide rail which characterized in that includes: the suction device comprises a first box body, a suction pipeline, a first guide rail, a second box body and a third box body, wherein the first box body, the suction pipeline, the first guide rail and the second guide rail are fixedly arranged on the same reference surface;
one end of the second box body is connected with a cover plate, the other end of the second box body is open, the open end of the second box body is communicated with the first box body, the third box body is communicated with the second box body through a pipeline penetrating through the cover plate, a stop component is arranged on the pipeline, the third box body, the pipeline and the cover plate are of an integral structure, one end of the third box body is sleeved on a suction pipeline, an electromagnet for locking a relative position structure of the third box body and the suction pipeline is arranged on the suction pipeline, and the other end of the suction pipeline is communicated with a vacuum environment;
the second box body can move on the first guide rail, the third box body can move on the second guide rail, the third box body can slide on the suction pipeline, and the first box body, the second box body and the third box body have at most four structural states.
2. The box structure with the suction pipeline adopting the series guide rail as claimed in claim 1, wherein a first inflatable gasket is arranged between the first box and the second box, a second inflatable gasket is respectively arranged between the third box and the suction pipeline, and the first inflatable gasket and the second inflatable gasket respectively have two structural states of inflation and deflation.
3. The box structure with a suction duct using the tandem guide rail as claimed in claim 2, wherein the third box is provided with a sliding sleeve structure, when the third box is connected to the suction duct, an inner wall surface of the sliding sleeve structure contacts with an end surface of the electromagnet on an outer wall of the suction duct, and the second inflatable gasket is disposed between the sliding sleeve structure and the electromagnet.
4. The structure of a housing with a suction duct using an in-line guide rail as set forth in claim 2, wherein said first inflatable packing is provided between the coupling end surfaces of the first housing and the second housing.
5. The structure of claim 1, wherein the second casing is connected to the first guide rail by means of a slider, and an elastic member is provided between the slider and the second casing.
6. The structure of a casing with a suction duct using a tandem guide according to any one of claims 1 to 4, wherein: the relative position of the first box body and the suction pipeline is fixed, a first inflatable sealing gasket arranged between the first box body and the second box body and a second inflatable sealing gasket arranged between the third box body and the suction pipeline are both in an inflatable state, and the electromagnet is in a magnetizing state;
the first box body, the second box body, the third box body and the suction pipeline are communicated with each other and are in a sealed state.
7. The structure of a casing with a suction duct using a tandem guide according to any one of claims 1 to 4, wherein: the relative position of the first box body and the suction pipeline is fixed, a first inflatable sealing gasket arranged between the first box body and the second box body and a second inflatable sealing gasket arranged between the third box body and the suction pipeline are both in an air release state, the electromagnet is in a demagnetizing state,
the second box body moves on the first guide rail, the third box body moves on the second guide rail, and the open end of the second box body is not connected with the first box body,
the second box body, the third box body and the suction pipeline are connected into a whole,
the third casing slides on the suction duct.
8. The structure of a casing with a suction duct using a guide rail in series according to any one of claims 1 to 4, wherein: the relative position of the first box body and the suction pipeline is fixed, a first inflatable sealing gasket arranged between the first box body and the second box body and a second inflatable sealing gasket arranged between the third box body and the suction pipeline are both in an air release state, and the electromagnet is in a demagnetizing state;
the open end of the second box body is connected with the first box body,
the third box body moves on the second guide rail, and the cover plate is not connected with the second box body,
the third casing slides on the suction duct.
9. The structure of a casing with a suction duct using a guide rail in series according to any one of claims 1 to 4, wherein: the relative position of the first box body and the suction pipeline is fixed, a first inflatable sealing gasket arranged between the first box body and the second box body and a second inflatable sealing gasket arranged between the third box body and the suction pipeline are both in an air release state, and the electromagnet is in a demagnetizing state;
the second box body moves on the first guide rail, the open end of the second box body is not communicated with the first box body,
the third box body moves on the second guide rail, and the cover plate is not connected with the second box body,
the third casing slides on the suction duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110629218.3A CN113074901B (en) | 2021-06-07 | 2021-06-07 | Box structure with suction pipeline and adopting series guide rails |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110629218.3A CN113074901B (en) | 2021-06-07 | 2021-06-07 | Box structure with suction pipeline and adopting series guide rails |
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| Publication Number | Publication Date |
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| CN113074901A true CN113074901A (en) | 2021-07-06 |
| CN113074901B CN113074901B (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
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| CN117606741A (en) * | 2024-01-18 | 2024-02-27 | 中国空气动力研究与发展中心高速空气动力研究所 | Non-contact air-tight sealing device applied to wind tunnel balance calibration and application method |
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| CN117606741B (en) * | 2024-01-18 | 2024-04-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Non-contact air-tight sealing device applied to wind tunnel balance calibration and application method |
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| Publication number | Publication date |
|---|---|
| CN113074901B (en) | 2021-08-03 |
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