CN109340479A - A kind of space flight Special valve heteromorphic connector switching device - Google Patents
A kind of space flight Special valve heteromorphic connector switching device Download PDFInfo
- Publication number
- CN109340479A CN109340479A CN201811302509.6A CN201811302509A CN109340479A CN 109340479 A CN109340479 A CN 109340479A CN 201811302509 A CN201811302509 A CN 201811302509A CN 109340479 A CN109340479 A CN 109340479A
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- CN
- China
- Prior art keywords
- pipe nipple
- heteromorphic connector
- wall
- switching device
- space flight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Multiple-Way Valves (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a kind of space flight Special valve heteromorphic connector switching device, including pipe nipple, swivel nut, housing, sealing ring, tapered sleeve and sealing bar, pipe nipple is hollow revolving body, and right end outer wall is provided with limited step；Pipe nipple outer wall both ends are provided with external screw thread；Swivel nut is screwed on pipe nipple right end outer wall, and swivel nut right end and pipe nipple right end form embedded cavity in the same plane, between pipe nipple and swivel nut；Heteromorphic connector small end head is embedded in embedded cavity, and the heteromorphic connector inner wall of embedded part is bonded with pipe nipple outer wall, and limited step is docked with smooth step, and is sealed at docking by sealing ring；Tapered sleeve is tapered rotary structure, it is placed on the right side of the smooth step of small end head of heteromorphic connector, housing is screwed on swivel nut outer wall, tapered sleeve is squeezed into embedded cavity, realization communicates being fixedly connected between pipe nipple and heteromorphic connector and cavity, and then solves the space flight Special valve with special-shaped ozzle and test connectivity problem.
Description
Technical field
The present invention relates to a kind of space flight Special valve heteromorphic connector switching devices, belong to rocket pressurizing transmission system and ground
Pilot system field of sealing technology.
Background technique
Space flight valve circulation medium not only has room temperature helium, nitrogen, there are also liquid hydrogen liquid oxygen etc., temperature cover+60 DEG C~-
The acceptance test temperature of 253 DEG C of ranges, valve products is also identical as the operating temperature of valve, and the operating pressure of space flight valve is high
The acceptance test air pressure of (highest 35MPa), valve products are also identical as operating air pressure.Some space flight valve products pipe at present
Docking disassembly often, causes such valve products to try during mouth is peculiarly shaped, the lossless degree of nozzle surface requires high, test
Connection sealing is tested to be difficult to realize.
For existing space flight Special valve abnormity ozzle, since it is not threadedly coupled, it is only useful for the smooth of welding
Small stair, can not be with traditional test fixture, and such as horn mouth, ball sealer is first-class is attached；And product has thin-wall construction,
Minimum wall thickness (MINI W.) 1mm, size is smaller, and within radial dimension 10mm, the big 35MPa of test pressure, experimental enviroment is severe, liquid nitrogen, liquid hydrogen
The features such as warm area, is unable to satisfy the test requirements document of such valve products using general test connection type, needs a kind of complete
New test interconnection technique solves this problem.
Summary of the invention
Technology of the invention solves the problems, such as: in order to overcome the deficiencies of the prior art, providing a kind of space flight Special valve abnormity and connects
Head switching device solves to test connectivity problem with the space flight Special valve of special-shaped ozzle.
Technical solution of the invention:
A kind of space flight Special valve heteromorphic connector switching device, heteromorphic connector is that hollow light slides back to swivel, outside small end head
Wall is provided with smooth step, including pipe nipple, swivel nut, housing, sealing ring, tapered sleeve and sealing bar, and pipe nipple is hollow revolving body,
Right end outer wall is provided with limited step；Pipe nipple outer wall both ends are provided with external screw thread；Swivel nut is screwed onto pipe nipple right end outer wall
On, swivel nut right end and pipe nipple right end form embedded cavity in the same plane, between pipe nipple and swivel nut；Heteromorphic connector small end
Head is embedded in embedded cavity, and the heteromorphic connector inner wall of embedded part is bonded with pipe nipple outer wall, limited step and smooth step pair
It connects, and is sealed at docking by sealing ring；Tapered sleeve is tapered rotary structure, and the smooth step of small end head for being placed in heteromorphic connector is right
Side, housing are screwed on swivel nut outer wall, and tapered sleeve is squeezed into embedded cavity, are realized to consolidating between pipe nipple and heteromorphic connector
Fixed connection and cavity communicate.
Pipe nipple left end cavity is in bell-mouth structure of air, and the bulb of sealing bar is placed in horn mouth, is realized to horn mouth
Sealing.
The bulb hardness of sealing bar is less than the hardness of pipe nipple material.
The bulb surface cladding polyimides or fluoroplastics of sealing bar.
It is+60 DEG C~-253 DEG C range sealings that the bulb junction of pipe nipple horn mouth and sealing bar, which can meet working media,
It is required that.
Pipe nipple horn mouth surface roughness is not more than 1.6.
The cone angle of tapered sleeve is 15 ° -30 °.
Tapered sleeve at least two valves.
Pipe nipple is consistent with the interior chamber size at heteromorphic connector docking.
Tapered sleeve big end exposes embedded cavity.
Compared with prior art, the present invention has the following advantages:
(1) present invention is solved by the mating connection between pipe nipple, swivel nut, housing, sealing ring, tapered sleeve and sealing bar
Space flight Special valve abnormity ozzle and the switching problem for having heteromorphic connector pilot system, in subsequent turnover and test process
Middle heteromorphic connector switching device transfers to circulate with product stream always, solves frequently disassembly switching device damage ozzle and repeats labor
Dynamic problem；
(2) present invention devises a kind of soft sealing ball head structure, can be made with effective solution when being used for multiple times
The case where generating impression at aluminium alloy horn mouth and weigh wounded, while it can be carried out after soft sealing bulb scratches or fails
Replacement saves cost, avoids wasting.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is sealing bar structure chart of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
Heteromorphic connector 7 of the present invention is that hollow light slides back to swivel, and small end head outer wall is provided with smooth step, specifically
It is related to a kind of space flight Special valve heteromorphic connector switching device, as shown in Figure 1, including pipe nipple 1, swivel nut 2, housing 3, sealing ring
4, tapered sleeve 5 and sealing bar 6, pipe nipple 1 are hollow revolving body, and right end outer wall is provided with limited step；1 outer wall both ends of pipe nipple are equal
It is provided with external screw thread；Swivel nut 2 is screwed on 1 right end outer wall of pipe nipple, 2 right end of swivel nut and 1 right end of pipe nipple in the same plane,
Embedded cavity is formed between pipe nipple 1 and swivel nut 2；7 small end head of heteromorphic connector is embedded in embedded cavity, and the abnormity of embedded part connects
First 7 inner wall is bonded with 1 outer wall of pipe nipple, and limited step is docked with smooth step, and is sealed at docking by sealing ring 4；Tapered sleeve 5 is
Tapered rotary structure, the cone angle of tapered sleeve 5 are 15 ° -30 °, at least two valves of tapered sleeve 5, and the small end head for being placed in heteromorphic connector 7 is smooth
On the right side of step, housing 3 is screwed on 2 outer wall of swivel nut, and tapered sleeve 5 is squeezed into embedded cavity, and 5 big end of tapered sleeve exposes embedded chamber
Body, realization communicates being fixedly connected between pipe nipple 1 and heteromorphic connector 7 and cavity, while to ensure that pipe nipple 1 connects with abnormity
Interior chamber size at first 7 docking is consistent.
As shown in Fig. 2, 1 left end cavity of pipe nipple is in bell-mouth structure of air, 1 horn mouth surface roughness of pipe nipple is not more than
1.6, the bulb of sealing bar 6 is placed in horn mouth, realizes that the bulb hardness of sealing bar 6 connects less than pipe to the sealing at horn mouth
The hardness of 1 material of mouth, can preferred sealing bar 6 bulb surface cladding polyimides or fluoroplastics, make 1 horn mouth of pipe nipple with
It is+60 DEG C~-253 DEG C range seal requests that the bulb junction of sealing bar 6, which can meet working media,.
The present invention solves the problems, such as the switching of space flight Special valve abnormity ozzle and universal test system.
Due to the singularity of ozzle form, need to redesign substitute mode completely, since universal test bench is all made of mark
Quasi- nipple form, and special-shaped ozzle uses smooth small boss form, it is therefore desirable to a kind of experimental rig is designed, is on the one hand needed
Welding point form is converted into standard thread joint form；On the other hand must assure that should under high pressure low temperature experimental enviroment
Device still ensures that the leakproofness with welding point, and gas leakage cannot occur, otherwise will have an impact to test result.
The sealing position of experimental rig provided by the invention and special-shaped ozzle uses end face seal, and sealing element is using O-shaped close
Seal, sealed clamping mode is in such a way that screw thread is tightened.
The present invention solves the problems, such as frequently to dismantle switching device damage ozzle and the duplication of labour.
Since space flight Special valve has the characteristics that small batch, pilot project multipaths length, disassembly often, to avoid frequency
Numerous disassembly experimental rig causes to damage to heteromorphic connector, also avoids frequently dismantling and the time is caused to waste, the present invention is more by producing
Cover heteromorphic connector switching device, from just experimental rig is installed to heteromorphic connector at the beginning of valves test, in subsequent turnover and
Heteromorphic connector switching device transfers to circulate with product stream always during test, until test is unloaded after being fully completed, to subsequent
Batch uses.
The present invention solves the problems, such as to weigh wounded at test pipe joint and heteromorphic connector switching device sealing.
The junction portion of this heteromorphic connector switching device is horn mouth formula pressure inlet, and screw thread is by horn mouth during the test
It links together with testing stand bulb, fits closely horn mouth and bulb to play close by applying torque to cap nut
Envelope effect.Since space flight valves test air pressure is mostly high pressure, so sealing bulb is integral type stainless steel material, heteromorphic connector turns
The junction portion material of connection device is also stainless steel, under the experimental enviroment of high pressure low temperature, to guarantee junction air-tightness, generally
Larger torque can be applied, when steel sealing bulb is repeatedly compressed and dismantled on connector mouth, both sides is be easy to cause to have pressure
It trace and weighs wounded, gently then influences to test sealing effect, can make to wear fifth wheel out when serious and enter product cavity, influence product matter
Amount.On the other hand, no matter replace switching device pressure inlet or replacement test pipeline be all it is uneconomic, also can delay product
Test progress.
Soft sealing ball head structure of the invention, can cause aluminium alloy loudspeaker with effective solution when being used for multiple times
The case where mouth generates impression and weighs wounded.Simultaneously when soft sealing bulb scratch or failure after it can be replaced, saving at
Originally it avoids wasting.Valve horn mouth sealing surface generation in order to prevent weighs wounded, and the hardness for sealing bulb just needs to be less than valve interface
The hardness of material, it is integral type steel material that bulb is sealed in national standard, in order to be less than valve interface hardness using hardness
Material, and it is point replaceable to seal ball head, adopts a split structure, i.e. the sealing ball head point with sealing horn mouth contact
It is individually process using polyimide material (or other nonmetallic materials, such as fluoroplastics).
The completely new space flight Special valve heteromorphic connector switching device that the present invention designs, it is easy to operate, highly-safe, it is able to satisfy
Connection seal request of the heteromorphic connector valve products under high pressure and ultra-low temperature surroundings.It is connected for the test of subsequent non-threaded connector
Mode provides direction.
The use of sampler significantly reduces device disassembly number during test, improves test efficiency and product
Nozzle surface quality.Corresponding sampler can be used for different product, so sampler can be applied in institute
Have that the test period is long, disassembly often, on the demanding valve products of interface surface.
After soft sealing bulb, it is+60 that valve horn mouth, which can meet working media with soft seal nipple junction,
DEG C~-253 DEG C of range seal requests.After multiple connection, disassembly valve, horn mouth sealing surfaces are not damaged, avoid one
Formula sealing bulb works as the shortcomings that sealing surface failure needs integral replacing, reduces economic loss, improves test efficiency.
The content that description in the present invention is not described in detail belongs to the well-known technique of professional and technical personnel in the field.
Claims (10)
1. a kind of space flight Special valve heteromorphic connector switching device, heteromorphic connector (7) is that hollow light slides back to swivel, outside small end head
Wall is provided with smooth step, which is characterized in that including pipe nipple (1), swivel nut (2), housing (3), sealing ring (4), tapered sleeve (5) and
Sealing bar (6), pipe nipple (1) are hollow revolving body, and right end outer wall is provided with limited step；Pipe nipple (1) outer wall both ends are all provided with
It is equipped with external screw thread；Swivel nut (2) is screwed on pipe nipple (1) right end outer wall, and swivel nut (2) right end is with pipe nipple (1) right end same
Embedded cavity is formed in plane, between pipe nipple (1) and swivel nut (2)；Heteromorphic connector (7) small end head is embedded in embedded cavity, embedding
Heteromorphic connector (7) inner wall for entering part is bonded with pipe nipple (1) outer wall, and limited step is docked with smooth step, and at docking by
Sealing ring (4) sealing；Tapered sleeve (5) is tapered rotary structure, is placed on the right side of the smooth step of small end head of heteromorphic connector (7),
Housing (3) is screwed on swivel nut (2) outer wall, and tapered sleeve (5) are squeezed into embedded cavity, and realization connects pipe nipple (1) with abnormity
Head (7) between being fixedly connected and cavity communicates.
2. a kind of space flight Special valve heteromorphic connector switching device as described in claim 1, which is characterized in that pipe nipple (1)
Left end cavity is in bell-mouth structure of air, and the bulb of sealing bar (6) is placed in horn mouth, is realized to the sealing at horn mouth.
3. a kind of space flight Special valve heteromorphic connector switching device as described in claim 1, which is characterized in that sealing bar (6)
Bulb hardness be less than pipe nipple (1) material hardness.
4. a kind of space flight Special valve heteromorphic connector switching device as claimed in claim 3, which is characterized in that sealing bar (6)
Bulb surface cladding polyimides or fluoroplastics.
5. a kind of space flight Special valve heteromorphic connector switching device as claimed in claim 4, which is characterized in that pipe nipple (1)
It is+60 DEG C~-253 DEG C range seal requests that the bulb junction of horn mouth and sealing bar (6), which can meet working media,.
6. a kind of space flight Special valve heteromorphic connector switching device as claimed in claim 2, which is characterized in that pipe nipple (1)
Horn mouth surface roughness is not more than 1.6.
7. a kind of space flight Special valve heteromorphic connector switching device as described in claim 1, which is characterized in that tapered sleeve (5)
Cone angle is 15 ° -30 °.
8. a kind of space flight Special valve heteromorphic connector switching device as described in claim 1, which is characterized in that tapered sleeve (5) is extremely
Few two valves.
9. a kind of space flight Special valve heteromorphic connector switching device as described in claim 1, which is characterized in that pipe nipple (1)
It is consistent with the interior chamber size at heteromorphic connector (7) docking.
10. a kind of space flight Special valve heteromorphic connector switching device as described in claim 1, which is characterized in that tapered sleeve (5) is big
Expose embedded cavity in end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302509.6A CN109340479B (en) | 2018-11-02 | 2018-11-02 | Special-shaped joint switching device for aerospace special valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302509.6A CN109340479B (en) | 2018-11-02 | 2018-11-02 | Special-shaped joint switching device for aerospace special valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109340479A true CN109340479A (en) | 2019-02-15 |
| CN109340479B CN109340479B (en) | 2020-11-10 |
Family
ID=65313559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811302509.6A Active CN109340479B (en) | 2018-11-02 | 2018-11-02 | Special-shaped joint switching device for aerospace special valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109340479B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028166A (en) * | 2021-02-25 | 2021-06-25 | 西安航天发动机有限公司 | Switching pre-tightening type sealing structure and sealing method of shaft assembly |
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| JPH05240379A (en) * | 1992-02-27 | 1993-09-17 | Fujitsu Ltd | Pipe joint and jointing method of pipe joint and pipe |
| CN2703941Y (en) * | 2004-04-06 | 2005-06-08 | 陈惠明 | Quick-changing joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028166A (en) * | 2021-02-25 | 2021-06-25 | 西安航天发动机有限公司 | Switching pre-tightening type sealing structure and sealing method of shaft assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109340479B (en) | 2020-11-10 |
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