CN111853240A - Sealing shroud ring for flexible plate sealing of wind tunnel jet pipe section and preparation method thereof - Google Patents
Sealing shroud ring for flexible plate sealing of wind tunnel jet pipe section and preparation method thereof Download PDFInfo
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- CN111853240A CN111853240A CN202010739387.8A CN202010739387A CN111853240A CN 111853240 A CN111853240 A CN 111853240A CN 202010739387 A CN202010739387 A CN 202010739387A CN 111853240 A CN111853240 A CN 111853240A
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- sealing
- air bag
- flexible plate
- sealing strip
- air
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Classifications
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
Abstract
The invention discloses a sealing surrounding belt capable of being used for sealing a flexible plate of a wind tunnel pipe section, which comprises sealing surrounding belts, wherein each sealing surrounding belt comprises an air bag and a sealing strip, each sealing strip is provided with a fixing groove, each air bag is fixedly connected with a connecting rod matched with the fixing groove, and the connecting rods are clamped in the fixing grooves. This can be used to sealed sealing shroud ring of wind-tunnel spout section flexible board, the gasbag is for having the dysmorphism cross-section of connective bar, designed the fixed slot the same with connective bar cross sectional dimension on the sealing strip, make gasbag and sealing strip effectively combine together, when the gasbag receives interior pressure and takes place the inflation, play sealed effect, when the gasbag exhaust shrink, the connective bar of gasbag can draw back the inside of fixed slot with the sealing strip, effectively avoided the sealing strip can not retract, the sealing strip easily receives the problem of damage with equipment lateral wall friction.
Description
Technical Field
The invention relates to the technical field of sealing between a flexible plate and a side wall of wind tunnel equipment, in particular to a sealing shroud band for flexible plate sealing of a wind tunnel spray pipe section.
Background
Fig. 8 of the attached drawings of the specification is a schematic view of a certain type of wind tunnel jet pipe section, as can be seen from fig. 8, the jet pipe section is a rectangular airflow channel surrounded by two flexible plates and two side walls, according to functional requirements, the section (airflow flow area) of the rectangular channel changes as required, and the flexible plates need to be flexibly deformed along the length direction to a certain extent, so that displacement exists between the two side surfaces of the flexible plates and the side walls, and a certain gap is reserved, and the gap needs to be sealed by using an old sealing shroud 8 in fig. 8.
The tubular air bag and the crescent rubber strip in the old sealing surrounding belt are separately arranged, the crescent rubber strip is jacked up when the tubular air bag is expanded, but the crescent rubber strip cannot be retracted into the mounting groove along with the tubular air bag after the air bag is exhausted and contracted, and the crescent rubber strip is damaged by being scratched when the flexible plate and the side wall move relatively.
To solve the above technical problem, we propose a sealing shroud for a flexible plate seal of a wind tunnel nozzle segment.
Disclosure of Invention
The invention aims to provide a sealing shroud for sealing a flexible plate of a jet pipe section of a wind tunnel, which solves the problem that a crescent rubber strip cannot be retracted into a mounting groove along with a tubular air bag after the air bag is exhausted and contracted, and the crescent rubber strip is scratched to cause damage when the flexible plate and a side wall relatively move.
In order to solve the technical problems, the following technical scheme is provided:
the utility model provides a sealed surrounding area that can be used to wind-tunnel spout pipeline section flexible plate is sealed, includes sealed surrounding area, sealed surrounding area all includes gasbag and sealing strip, has all seted up the fixed slot on every sealing strip, the connective bar of equal fixedly connected with and fixed slot looks adaptation on every gasbag, the connective bar joint is in the inside of fixed slot.
A sealing structure of a flexible plate and a side wall of a wind tunnel nozzle section comprises the flexible plate and an equipment side wall, and the sealing shroud of the claim is arranged between the flexible plate and the equipment side wall.
According to a further technical scheme, a fixed groove is formed in the end face, close to the side wall of the equipment, of the flexible plate, and the air bag is arranged inside the fixed groove.
The further technical scheme is that the flexible plate is provided with mounting grooves, the inside of each mounting groove is fixedly connected with a connecting circular tube, and the two connecting circular tubes are communicated with the two air bags end to end.
According to a further technical scheme, an air nozzle groove is formed in the inner side wall of the fixed groove, an air nozzle matched with the air nozzle groove is fixedly connected to the air bag, the air nozzle is fixedly connected to the inner portion of the air nozzle groove, an inflation cavity is formed in the inner side wall of the air nozzle groove, a threaded hole is formed in the top of the flexible plate, the inflation cavity is communicated with the threaded hole, and an inflation nozzle matched with the threaded hole is connected to the inner thread of the threaded hole.
A further technical scheme is that the two mounting grooves are communicated with the two fixed grooves, the height values of the fixed grooves are equal to the height values of the sections of the sealing strips, and the two sealing strips are respectively contacted with the two equipment side walls.
The further technical proposal is that the manufacturing method comprises the following steps;
s1, manufacturing the rubber material into an air bag, a sealing strip and a connecting circular tube by adopting extrusion equipment or a die, wherein the diameter value of the fixing groove is equal to that of the connecting rod, and the diameter value of the connecting circular tube is equal to that of the air bag;
s2, cutting the air bag, the sealing strip and the connecting circular tube according to the length of the sealing surrounding belt;
s3, vulcanizing the specific part of the air bag by adopting a mould to form an air nozzle;
s4, pressing and vulcanizing the cut air bag and the connecting circular tube into a 90-degree bend angle by adopting a mold, and communicating the air bag and the connecting circular tube end to form a rectangular air bag;
s5, clamping the fixing groove in the sealing strip to the connecting rod at one end of the air bag;
s6, installing the air bag with two sections of sealing strips inside the two fixed grooves of the flexible plate, installing two sections of connecting circular tubes inside the two installation grooves, and tightly inserting the air nozzle into the air nozzle groove, thereby completing the installation of the sealing shroud on the flexible plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the air bag is provided with the special-shaped section of the connecting rod, the fixing groove with the same size as the section of the connecting rod is designed on the sealing strip, so that the air bag and the sealing strip are effectively combined together, when the air bag is expanded due to internal pressure, the sealing strip can be jacked up, a gap between the flexible plate and the equipment side wall is sealed through the sealing strip, when the air bag is exhausted and contracted, the connecting rod of the air bag can pull the sealing strip back to the inside of the fixing groove, and the problems that the sealing strip cannot retract and the sealing strip is easily damaged due to friction with the equipment side wall are effectively avoided.
2. The invention prevents the air bag from being torn and damaged easily due to local stress concentration when the air bag is inflated and expanded by communicating the two connecting circular tubes and the two air bags end to end, and the prior tubular air bag is often sealed untight because the plugging sections at the two ends cannot be expanded, and the rectangular air bag formed by communicating the air bag and the connecting circular tubes end to end can be inflated and exhausted through the air nozzle, so that the arrangement of an inflation and exhaust system is reduced, and the problem of local sealing untight and air bag damage caused by the limitation of the expansion of the air bag due to the air nozzle is solved by arranging the inflation cavity and the threaded hole to arrange the inflation nozzle on the top of the flexible plate.
Drawings
FIG. 1 is a schematic view of a flexible plate and sealing shroud configuration of the present invention;
FIG. 2 is a cross-sectional view of a fixed slot configuration of the present invention;
FIG. 3 is a perspective view of a flexible board structure according to the present invention;
FIG. 4 is a schematic view of the sealing shroud of the present invention;
FIG. 5 is a schematic view of the sealing shroud of the present invention in a unsealed condition;
FIG. 6 is a schematic cross-sectional view of the bladder and seal of the present invention;
FIG. 7 is a schematic cross-sectional view of the connecting tube of the present invention;
FIG. 8 is a schematic diagram of the components of a nozzle segment of a wind tunnel of some type.
In the figure: 1. a flexible board; 101. mounting grooves; 102. fixing a groove; 103. an air nozzle groove; 104. an inflation cavity; 105. a threaded hole; 2. an air bag; 201. a connecting rod; 202. an air tap; 3. a sealing strip; 301. fixing grooves; 4. an air charging nozzle; 5. a connecting circular pipe; 6. a device side wall; 7. sealing the shroud ring; 8. the old seal shroud.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
A sealing structure of a flexible board and a side wall of a wind tunnel pipe section comprises a flexible board 1 and an equipment side wall 6, a sealing surrounding belt 7 is arranged between the flexible board 1 and the equipment side wall 6, a fixed groove 102 is arranged on the end face of the flexible board 1 close to the equipment side wall 6, an air bag 2 is arranged in the fixed groove 102, the old sealing surrounding belt 8 on the flexible board 1 in the figure 8 is replaced by the sealing surrounding belt 7, when the air bag 2 is inflated by gas, the air bag 2 is a special-shaped section with a connecting rod 201, a fixed groove 301 with the same size as the section of the connecting rod 201 is designed on the sealing strip 3, so that the air bag 2 and the sealing strip 3 are effectively combined together, when the air bag 2 is inflated by internal pressure, the sealing strip 3 can be jacked up to play a sealing role, as shown in figure 4, when the air bag 2 is exhausted and contracted, the connecting rod 201 of the air bag 2 can pull the sealing strip 3 back to the inside of the fixed groove 102, is easy to be damaged.
Example 2:
on the basis of the above embodiment, in embodiment 2, please refer to an embodiment shown in fig. 1, fig. 3 and fig. 7, the flexible plate 1 is provided with mounting grooves 101, the inside of each mounting groove 101 is fixedly connected with a connecting circular tube 5, the two connecting circular tubes 5 are communicated with the two air bags 2 end to end, the two mounting grooves 101 are communicated with the two fixed grooves 102, the height value of the fixed grooves 102 is equal to the height value of the cross section of the sealing strip 3, the two sealing strips 3 are respectively contacted with the two equipment side walls 6, the connecting circular tubes 5, the air bags 2 and the sealing strips 3 are made of rubber materials, and the two connecting circular tubes 5 are communicated with the two air bags 2 end to end, so that the air bags 2 are prevented from being torn and damaged due to local stress concentration when being inflated and expanded, and the conventional tubular air bags are often sealed untight due to the fact that.
Example 3:
on the basis of the above embodiment, in embodiment 3, referring to an embodiment shown in fig. 2, an air nozzle groove 103 is formed on an inner side wall of the fixed groove 102, an air nozzle 202 adapted to the air nozzle groove 103 is fixedly connected to the air bag 2, the air nozzle 202 is fixedly connected to the inside of the air nozzle groove 103, the rectangular air bag formed by the head-to-tail communication of the air bag 2 and the connecting circular tube 5 can be inflated and exhausted through the air nozzle 202, the arrangement of an inflation and exhaust system is reduced, the inner side wall of the air nozzle groove 103 is provided with an inflation cavity 104, the top of the flexible plate 1 is provided with a threaded hole 105, the inflation cavity 104 is communicated with the threaded hole 105, the inner part of the threaded hole 105 is in threaded connection with an inflation nozzle 4 matched with the threaded hole 105, the inflating nozzle 4 is arranged at the top of the flexible plate 1 through the inflating cavity 104 and the threaded hole 105, so that the problems of partial sealing incompact and airbag damage caused by the fact that the inflating nozzle 4 limits the expansion of the airbag are solved.
The manufacturing method comprises the following steps;
s1, manufacturing the rubber compound into the air bag 2 with the cross section shape of the figures 6 and 7, the sealing strip 3 and the connecting circular tube 5 by adopting an extrusion device or a die, wherein the diameter value of the fixing groove 301 is equal to that of the connecting rod 201, and the inner diameter value of the connecting circular tube 5 is equal to that of the air bag 2;
s2, cutting the air bag 2, the sealing strip 3 and the connecting circular tube 5 in the figures 6 and 7 according to the length of the shroud ring;
s3, vulcanizing the specific part of the air bag 2 by adopting a mould to form an air tap 202;
s4, mould pressing and vulcanizing the cut air bag 2 and the connecting circular tube 5 into a 90-degree bend angle by adopting a mould, and communicating the air bag 2 and the connecting circular tube 5 end to form a rectangular air bag;
s5, clamping the fixing groove 301 in the sealing strip 3 to the connecting rod 201 at one end of the airbag 2;
s6, installing the air bag 2 with two sections of sealing strips 3 inside the two fixed grooves 102 of the flexible plate 1, installing the two sections of connecting circular tubes 5 inside the two installation grooves 101, and tightly inserting the air nozzle 202 into the air nozzle groove 103, thereby completing the installation of the sealing shroud 7 on the flexible plate 1;
and S7, screwing the inflating nozzle 4 into the threaded hole 105 on the top of the flexible plate 1, thereby completing the installation of the inflating and deflating system of the sealing shroud 7.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a can be used to sealed seal shroud of wind-tunnel spout section flexplate, includes seal shroud (7), its characterized in that: sealed shroud ring (7) all include gasbag (2) and sealing strip (3), have all seted up fixed slot (301) on every sealing strip (3), and equal fixedly connected with and connective bar (201) of fixed slot (301) looks adaptation on every gasbag (2), connective bar (201) joint is in the inside of fixed slot (301).
2. The utility model provides a seal structure of wind-tunnel spout section flexplate and lateral wall, includes flexplate (1) and equipment lateral wall (6), its characterized in that: a sealing shroud (7) as claimed in claim 1 is provided between the flexible panel (1) and the equipment side wall (6).
3. The seal structure for the flexible plate and the side wall of the wind tunnel nozzle segment according to claim 2, wherein: the end face, close to the equipment side wall (6), of the flexible plate (1) is provided with a fixed groove (102), and the air bag (2) is arranged inside the fixed groove (102).
4. The seal structure for the flexible plate and the side wall of the wind tunnel nozzle segment according to claim 2, wherein: the flexible plate is characterized in that mounting grooves (101) are formed in the flexible plate (1), the inner portion of each mounting groove (101) is fixedly connected with a connecting circular tube (5), and the two connecting circular tubes (5) are communicated with the two air bags (2) end to end.
5. The seal structure for the flexible plate and the side wall of the wind tunnel nozzle segment according to claim 3, wherein: air nozzle groove (103) have been seted up to the inside wall of deciding groove (102), air cock (202) of fixedly connected with and air nozzle groove (103) looks adaptation are gone up in gasbag (2), air cock (202) fixed connection is in the inside of air nozzle groove (103), inflatable chamber (104) have been seted up to the inside wall of air nozzle groove (103), threaded hole (105) have been seted up at the top of flexible board (1), inflatable chamber (104) are linked together with threaded hole (105), the inside threaded connection of threaded hole (105) has air cock (4) with threaded hole (105) looks adaptation.
6. The seal structure for the flexible plate and the side wall of the wind tunnel nozzle segment according to claim 3, wherein: the two mounting grooves (101) are communicated with the two fixed grooves (102), the height value of each fixed groove (102) is equal to the height value of the section of each sealing strip (3), and the two sealing strips (3) are respectively contacted with the two equipment side walls (6).
7. The preparation method of the sealing shroud ring for the flexible plate seal of the wind tunnel nozzle segment according to claim 1, wherein the method comprises the following steps: the manufacturing method comprises the following steps;
s1, manufacturing the air bag (2), the sealing strip (3) and the connecting circular tube (5) by using extrusion equipment or a die, wherein the diameter value of the fixing groove (301) is equal to that of the connecting rod (201), and the inner diameter value of the connecting circular tube (5) is equal to that of the air bag (2);
s2, cutting the air bag (2), the sealing strip (3) and the connecting circular tube (5) at fixed length according to the length of the sealing surrounding belt (7);
s3, vulcanizing the specific part of the air bag (2) by adopting a mould to form an air tap (202);
s4, pressing and vulcanizing the cut air bag (2) and the connecting circular tube (5) into a 90-degree bend angle by adopting a mold, and communicating the air bag (2) and the connecting circular tube (5) end to form a rectangular air bag;
s5, clamping the fixing groove (301) in the sealing strip (3) to the connecting rod (201) at one end of the air bag (2);
s6, the air bag (2) with two sections of sealing strips (3) is installed inside two fixed grooves (102) of the flexible plate (1), two sections of connecting circular tubes (5) are installed inside two installation grooves (101), and the air nozzle (202) is tightly inserted into the air nozzle groove (103), so that the flexible plate (1) is installed by the sealing shroud band (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739387.8A CN111853240B (en) | 2020-07-28 | 2020-07-28 | Sealing shroud ring for flexible plate sealing of wind tunnel jet pipe section and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739387.8A CN111853240B (en) | 2020-07-28 | 2020-07-28 | Sealing shroud ring for flexible plate sealing of wind tunnel jet pipe section and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111853240A true CN111853240A (en) | 2020-10-30 |
| CN111853240B CN111853240B (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010739387.8A Active CN111853240B (en) | 2020-07-28 | 2020-07-28 | Sealing shroud ring for flexible plate sealing of wind tunnel jet pipe section and preparation method thereof |
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| CN (1) | CN111853240B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446400A (en) * | 2021-06-28 | 2021-09-28 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4313609A (en) * | 1979-07-16 | 1982-02-02 | Clements Harold J | Sealing devices |
| CN103629362A (en) * | 2013-12-17 | 2014-03-12 | 北京航天益森风洞工程技术有限公司 | Two-layer inflation sealing device of wind tunnel telescopic section |
| CN108680331A (en) * | 2018-05-17 | 2018-10-19 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of adjustable half flexible jet pipe of branched side wall |
| CN110539428A (en) * | 2019-10-15 | 2019-12-06 | 咸阳裕华橡胶制品有限公司 | Preparation method of rubber sealing element and vulcanization mold thereof |
| CN111197673A (en) * | 2020-02-19 | 2020-05-26 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel high-pressure inflatable sealing shroud three-way inflating nozzle and using method thereof |
-
2020
- 2020-07-28 CN CN202010739387.8A patent/CN111853240B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4313609A (en) * | 1979-07-16 | 1982-02-02 | Clements Harold J | Sealing devices |
| CN103629362A (en) * | 2013-12-17 | 2014-03-12 | 北京航天益森风洞工程技术有限公司 | Two-layer inflation sealing device of wind tunnel telescopic section |
| CN108680331A (en) * | 2018-05-17 | 2018-10-19 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of adjustable half flexible jet pipe of branched side wall |
| CN110539428A (en) * | 2019-10-15 | 2019-12-06 | 咸阳裕华橡胶制品有限公司 | Preparation method of rubber sealing element and vulcanization mold thereof |
| CN111197673A (en) * | 2020-02-19 | 2020-05-26 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel high-pressure inflatable sealing shroud three-way inflating nozzle and using method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446400A (en) * | 2021-06-28 | 2021-09-28 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe |
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| CN111853240B (en) | 2023-01-17 |
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