CN211904860U - Follow-up high-temperature inflammable gas sealing device applied to testing machine - Google Patents
Follow-up high-temperature inflammable gas sealing device applied to testing machine Download PDFInfo
- Publication number
- CN211904860U CN211904860U CN201922138695.0U CN201922138695U CN211904860U CN 211904860 U CN211904860 U CN 211904860U CN 201922138695 U CN201922138695 U CN 201922138695U CN 211904860 U CN211904860 U CN 211904860U
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- cavity
- inner cavity
- interior cavity
- inflammable gas
- interior
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- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 64
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000000007 visual effect Effects 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003595 mist Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
A follow-up high-temperature inflammable gas sealing device applied to a testing machine is characterized in that a flat clamp used for fixing a tested workpiece is arranged on the periphery in an inner cavity, an inner cavity sealing upper cover is arranged on the inner cavity, an outer cavity sealing upper cover is arranged on an outer cavity, the outer periphery of the inner cavity sealing upper cover is fixedly connected with the inner periphery of the outer cavity sealing upper cover through bolts, a ceramic heating sheet is arranged at the outer bottom of the inner cavity, load mechanisms used for applying external force to the tested workpiece are arranged on four side surfaces of the inner cavity, load driving shafts connected with external power are arranged on the four side surfaces of the outer cavity, an inner cavity visual window is arranged on the inner cavity sealing upper cover, a nitrogen gas inlet pipe and an inflammable gas inlet pipe used for introducing nitrogen gas and inflammable gas into the inner cavity and the outer cavity are arranged on the inner cavity and the, and a mixed gas outlet pipe and a mixed gas collecting pipe which are used for guiding the mixed gas in the inner cavity to the outside. The utility model is suitable for a carry on of high temperature seal environment on the mechanics experiment machine.
Description
Technical Field
The utility model relates to a high temperature inflammable gas sealing device. In particular to a follow-up high-temperature inflammable gas sealing device applied to a testing machine.
Background
In the field of mechanical testing machines, the existing testing machine under normal temperature and normal pressure environment cannot meet the requirements of more and more complex working conditions, many technicians develop mechanical testing systems applied to high-temperature and high-pressure and inflammable gas environments, and the mechanical testing systems provide higher requirements for dynamic sealing technology. The existing sealing method mainly comprises soft and hard packing sealing, labyrinth sealing, piston ring sealing and brush sealing. But the sealing of the follow-up mechanical device can not be realized, and the defects of more limited application conditions, lower working condition adaptability, poorer sealing effect and the like exist. For example, the packing seal is prone to hardening under high temperature conditions, and wear compensation is insufficient; the labyrinth seal belongs to non-contact seal, and the sealing effect is far inferior to that of contact seal; the piston ring seal is the most common high-temperature gas seal structure in the prior art, and the piston ring seal has to work under the conditions of continuous lubrication and cooling and is easy to wear; brush seals are long in production cycle, difficult to manufacture, and require lubrication and cooling. The existing sealing method is not suitable for dynamic sealing of high-temperature inflammable gas due to the defects of low working condition applicability, poor sealing effect and the like.
The sealing device can realize the sealing of inflammable gas in a high-temperature environment, is carried on a mechanical testing machine, and provides an experimental result which is more prone to working conditions for mechanical testing.
Disclosure of Invention
The utility model aims to solve the technical problem that a carry on mechanical testing machine, can realize the follow-up formula high temperature inflammable gas sealing device who is applied to the testing machine to inflammable gas's sealed under high temperature environment is provided.
The utility model adopts the technical proposal that: a follow-up high-temperature inflammable gas sealing device applied to a testing machine comprises an outer cavity and an inner cavity fixed in the middle of the inner cavity, flat plate clamps used for fixing a tested workpiece are symmetrically arranged on the periphery of the inner cavity, an inner cavity sealing upper cover is arranged on the inner cavity, a rectangular annular outer cavity sealing upper cover is arranged on the outer cavity around the inner cavity, the outer periphery of the inner cavity sealing upper cover is fixedly connected with the inner periphery of the outer cavity sealing upper cover through bolts and is hermetically connected with the inner periphery of the outer cavity sealing upper cover through high-temperature resistant sealing columns, a ceramic heating sheet used for heating is arranged at the outer bottom of the inner cavity, load mechanisms used for applying external force to the tested workpiece are arranged on four sides of the inner cavity corresponding to the flat plate clamps, and load driving shafts connected with external power are arranged on the four sides of the outer cavity corresponding to the load mechanisms, the middle part of the sealed upper cover of inner chamber is provided with the interior cavity visual window that is used for observing the inside situation of inner chamber, still be provided with respectively on inner chamber and the outer cavity and run through in proper order the lateral wall of outer cavity and inner chamber is used for the nitrogen gas intake pipe that the inside cavity let in nitrogen gas and is used for the inflammable gas intake pipe that the inside cavity let in inflammable gas, and runs through in proper order the lateral wall of outer cavity and inner chamber is used for leading the mist in the inner chamber to outside mist outlet duct and mist collecting pipe.
The utility model discloses a be applied to trailing type high temperature inflammable gas sealing device of testing machine, trailing type high temperature inflammable gas sealing device safe and reliable, applicable scope is nimble, can provide the reference for the sealing of different temperatures and gas atmosphere, is particularly useful for the carrying of high temperature sealing environment on the mechanics experimental machine, makes test range wider, and the accuracy is higher.
Drawings
Fig. 1 is an external structural schematic view of a follow-up high-temperature flammable gas sealing device applied to a testing machine of the present invention;
fig. 2 is an exploded schematic view of the following high-temperature flammable gas sealing device applied to the testing machine of the present invention;
FIG. 3 is a top view of the present invention with the inner and outer chamber sealing caps removed;
FIG. 4 is a cross-sectional view A-A of FIG. 1;
FIG. 5 is a schematic structural view of the telescopic jacket of the present invention;
fig. 6 is a schematic structural view of the main shaft of the present invention.
In the drawings
1: an inner cavity 2: outer cavity
3: inner cavity sealing upper cover 4: outer cavity sealing upper cover
5: high-temperature resistant sealing bars 6: inner cavity visual window
7. 8: thermocouple through hole 9: nitrogen inlet pipe
10: mixed gas outlet pipe 11: inflammable gas inlet pipe
12: mixed gas collecting pipe 13: load sensor wire passing hole
14. 16: oxygen concentration verification devices 15, 17: inflammable gas concentration testing device
18: the telescopic jacket 19: ceramic heating plate
20. 21, 22, 23: load drive shafts 25, 24, 26, 27: flange
28. 29, 30, 31: the load sensor 32: main shaft
33: inner threads 34 of the telescopic sleeve: external thread of telescopic sleeve
35: the corrugated structure 36: main shaft internal thread
37: first spindle external thread 38, 39, 40, 41: flat plate clamp
42: threaded hole 43: through hole
44: internal threaded hole 45: second spindle external thread
Detailed Description
The following high-temperature flammable gas sealing device applied to the testing machine of the present invention will be described in detail with reference to the following embodiments and the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, the utility model discloses a be applied to trailing type high temperature inflammable gas sealing device of testing machine, including outer cavity 2 with fix the interior cavity 1 at middle part in outer cavity 2, interior cavity 1 is the key device that realizes sealing, outer cavity 2 is the inspection and the secondary protector of sealed effect, all can adopt stainless steel material. Interior cavity 1 interior symmetry all around be provided with flat clamp 38, 39, 40, 41 that are used for fixed workpiece under test, be provided with interior cavity seal upper cover 3 on the interior cavity 1, be provided with the annular outer cavity seal upper cover 4 of rectangle around interior cavity 1 on the outer cavity 2, the outer periphery of interior cavity seal upper cover 3 with through bolt fixed connection between the interior periphery of outer cavity seal upper cover 4, and through 5 looks sealing connection of high temperature resistant sealed column bars, the outer bottom of interior cavity 1 is provided with the ceramic heating piece 19 that is used for the heating, ceramic heating piece 19 inlay in interior cavity 1 bottom surface intermediate layer, realize the inside intensification of interior cavity 1 through thermal radiation's mode.
Load mechanisms for applying external force to the workpiece to be tested are arranged on four side surfaces of the inner cavity 1 corresponding to the flat plate clamps 38, 39, 40 and 41, the four side surfaces of the outer cavity 2 are provided with load driving shafts 20, 21, 22 and 23 corresponding to the load mechanisms and connected with external power, the middle part of the inner cavity sealing upper cover 3 is provided with an inner cavity visual window 6 for observing the inner condition of the inner cavity 1, the inner cavity 1 and the outer cavity 2 are respectively provided with a nitrogen inlet pipe 9 which sequentially penetrates through the side walls of the outer cavity 2 and the inner cavity 1 and is used for introducing nitrogen into the inner cavity 1 and a combustible gas inlet pipe 11 for introducing combustible gas into the inner cavity 1, and a mixed gas outlet pipe 10 and a mixed gas collecting pipe 12 which sequentially penetrate through the side walls of the outer cavity 2 and the inner cavity 1 and are used for guiding the mixed gas in the inner cavity 1 to the outside, and are used for measuring gas components.
The nitrogen gas inlet pipe 9, the inflammable gas inlet pipe 11, the mixed gas outlet pipe 10 and the mixed gas collecting pipe 12 are all provided with flame arresters in series, and the flame arresters can have the functions of flame retardance and single-way valves at the same time.
As shown in fig. 1 and 2, four end corners of the upper sealing cover 4 of the outer cavity are respectively and symmetrically provided with 2 oxygen concentration check devices 14 and 16 for detecting whether nitrogen gas leaks from the inner cavity 1 in the outer cavity 2, and respectively and symmetrically provided with 2 inflammable gas concentration check devices 15 and 17 for detecting whether inflammable gas leaks from the inner cavity 1 in the outer cavity 2.
As shown in fig. 1 and 2, the middle part of the inner cavity sealing upper cover 3 is formed with a groove which is recessed inwards, the bottom of the groove is communicated with the inside of the inner cavity 1, the inner cavity visual window 6 is embedded into the bottom of the groove, the inner cavity visual window is fixed by bolts, and a sealing structure is formed by bonding high-temperature-resistant glue, so that the sealing performance is ensured.
As shown in fig. 2, thermocouple through holes 7 and 8 are also symmetrically formed on the inner cavity 1 and the outer cavity 2, respectively, for making thermocouples sequentially penetrate through the side walls of the outer cavity 2 and the inner cavity 1 to detect the temperature in the inner cavity 1.
As shown in fig. 2 and 4, the load mechanism includes: the four sides of the inner cavity 1 are symmetrically provided with a through threaded hole 42, the four sides of the outer cavity 2 are provided with a through hole 43 corresponding to the threaded hole 42, a load sensor 28, 29, 30, 31 is arranged between the four outer side walls of the inner cavity 1 and the four inner side walls of the outer cavity 2, the load sensor 28, 29, 30, 31 is provided with a through inner threaded hole 44 formed by the threaded hole 42 and the through hole 43, a telescopic outer sleeve 18 and a main shaft 32 are further arranged, the main shaft 32 penetrates through the telescopic outer sleeve 18, one end of the threaded hole 42 of the inner cavity 1 is connected with a flat clamp 38, 39, 40, 41 positioned in the inner cavity 1, the other end of the threaded hole is connected with the threaded hole 42 of the load sensor 28, 29, 30, 31, the telescopic outer sleeve 18 is positioned in the threaded hole 42 of the inner cavity 1, one side of the inner cavity 1 is in threaded connection with the threaded hole 42 of the inner cavity 1, the other end is screwed to the main shaft 32, and the load sensors 28, 29, 30, and 31 are positioned on the outer chamber 2 side and are connected to load driving shafts 20, 21, 22, and 23 inserted through holes 43 in the outer chamber 2 by female screw holes 44.
As shown in fig. 1 and 2, the side wall of the outer cavity 2 is provided with a load sensor wire through hole 13 for connecting the load sensors 28, 29, 30, and 31 with external equipment, and the load sensor wire through hole 13 and a through conduit pipe realize static sealing through a sealing ring.
As shown in fig. 5, the telescopic outer sleeve 18 is a tube structure, one end of the tube structure is formed with a telescopic inner thread 33 for connecting with the outer thread on the main shaft 32, the other end is formed with a telescopic outer thread 34 for connecting with the threaded hole 42 on the inner cavity 1, and a telescopic corrugated structure 35 is formed in the middle of the tube structure, so that the tube structure can be stretched under the action of the load driving shafts 20, 21, 22 and 23, and the follow-up sealing is realized through the telescopic structure.
As shown in fig. 6, a main shaft internal thread 36 for connecting the flat clamps 38, 39, 40, 41 is formed at one end of the main shaft 32, a first main shaft external thread 37 for connecting the load sensors 28, 29, 30, 31 is formed at a port at the other end, and a second main shaft external thread 45 for screwing the telescopic sleeve internal thread 33 on the telescopic sleeve 18 is formed on a shaft body of the main shaft 32 adjacent to the first main shaft external thread 37.
The utility model discloses a follow-up high temperature inflammable gas sealing device for testing machine lets in nitrogen gas in cavity 1 respectively by nitrogen gas intake pipe 9 and combustible gas intake pipe 11, records the oxygen value and be zero until oxygen concentration verifying attachment 14, 16. Hydrogen which forms inflammable gas is introduced into the inner cavity 1 through the air inlet pipe until the concentration of the hydrogen reaches a set value. And electrifying the ceramic heating sheet 19 until the temperature value in the inner cavity 1 measured by the thermocouple is +/-3 ℃ of the set temperature, and then carrying out preset experimental operation.
Once the gas concentration detection device detects that the outer cavity 2 has leaked abnormal gas, the heating power supply is immediately cut off, and a large amount of nitrogen is introduced into the inner cavity 1 to ensure safety.
Claims (9)
1. The utility model provides a follow-up high temperature inflammable gas sealing device for testing machine, includes outer cavity (2) and fixes interior cavity (1) at outer cavity (2) interior middle part, the interior symmetry all around of interior cavity (1) is provided with the dull and stereotyped anchor clamps that are used for fixed work piece under test, characterized in that, be provided with interior cavity seal upper cover (3) on interior cavity (1), be provided with rectangle annular outer cavity seal upper cover (4) around interior cavity (1) on outer cavity (2), the outer periphery of interior cavity seal upper cover (3) with pass through bolt fixed connection between the interior periphery of outer cavity seal upper cover (4), and through high temperature resistant sealed column bar (5) looks sealing connection, the outer bottom of interior cavity (1) is provided with ceramic heating plate (19) that are used for heating, be provided with the load mechanism that is used for exerting external force to the work piece under test on four sides of interior cavity (1) with anchor clamps corresponding, correspond on four sides of outer cavity (2) load mechanism be provided with the load drive shaft of connecting outside power, the middle part of interior cavity seal upper cover (3) is provided with interior cavity visual window (6) that are used for observing interior cavity (1) inside situation, still be provided with respectively on interior cavity (1) and the outer cavity (2) and run through in proper order the lateral wall of outer cavity (2) and interior cavity (1) is used for nitrogen gas intake pipe (9) that lets in nitrogen gas to interior cavity (1) and is used for leading in inflammable gas's inflammable gas intake pipe (11) to interior cavity (1), and runs through in proper order the lateral wall of outer cavity (2) and interior cavity (1) is used for leading the mixed gas outlet duct (10) and the mixed gas collecting pipe (12) of outside to the mixed gas in with interior cavity (1).
2. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 1, wherein, 2 oxygen concentration check devices for detecting whether nitrogen gas leaks from the inner cavity (1) in the outer cavity (2) are symmetrically arranged on four corners of the upper sealing cover (4) of the outer cavity respectively, and 2 inflammable gas concentration check devices for detecting whether inflammable gas leaks from the inner cavity (1) in the outer cavity (2) are symmetrically arranged respectively.
3. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 1, wherein a concave groove is formed in the middle of the inner cavity sealing upper cover (3), the bottom of the groove and the inside of the inner cavity (1) are of a communicating structure, and the inner cavity visual window (6) is embedded in the bottom of the groove and is bonded by high-temperature resistant glue to form a sealing structure.
4. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 1, wherein fire arresters are arranged on the nitrogen gas inlet pipe (9), the inflammable gas inlet pipe (11), the mixed gas outlet pipe (10) and the mixed gas collecting pipe (12) in series.
5. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 1, wherein thermocouple through holes are symmetrically formed on the inner cavity (1) and the outer cavity (2) respectively, and are used for enabling thermocouples to sequentially penetrate through the side walls of the outer cavity (2) and the inner cavity (1) to detect the temperature in the inner cavity (1).
6. The follow-up high-temperature flammable gas sealing device applied to the testing machine according to claim 1, wherein the loading mechanism comprises: four sides of interior cavity (1) on the symmetry respectively be formed with a screw hole (42) that link up, on four sides of outer cavity (2) with corresponding each being formed with a perforating hole (43) of screw hole (42), be provided with between four lateral walls of interior cavity (1) and the four inside walls of outer cavity (2) and respectively be provided with a load cell, load cell is last to correspond screw hole (42) and perforating hole (43) form internal thread hole (44) that link up, still be provided with flexible overcoat (18) and main shaft (32), main shaft (32) run through flexible overcoat (18) and one end are run through screw hole (42) of interior cavity (1) are connected and are located the flat plate anchor clamps in interior cavity (1), other end threaded connection on load cell's screw hole (42), flexible overcoat (18) are located one side threaded connection of interior cavity (1) interior cavity (42) 1) The other end of the threaded hole (42) is connected to the main shaft (32) in a threaded manner, and the load sensor is positioned on one side of the outer cavity (2) and is connected with a load driving shaft penetrating through a through hole (43) in the outer cavity (2) through an internal threaded hole (44).
7. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 6, wherein the telescopic jacket (18) is a tube structure, one end of the tube structure is formed with a telescopic jacket internal thread (33) for connecting with the external thread on the main shaft (32), the other end of the tube structure is formed with a telescopic jacket external thread (34) for connecting with the threaded hole (42) on the inner cavity (1), and the middle part of the tube structure is formed with a telescopic corrugated structure (35).
8. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 6, wherein one end of the main shaft (32) is formed with a main shaft internal thread (36) for connecting the flat clamp, the other end of the main shaft is formed with a first main shaft external thread (37) for connecting the load sensor, and a second main shaft external thread (45) for being in threaded connection with the telescopic sleeve internal thread (33) on the telescopic sleeve (18) is formed on the shaft body of the main shaft (32) adjacent to the first main shaft external thread (37).
9. The follow-up high-temperature inflammable gas sealing device applied to the testing machine according to claim 6, wherein a load sensor wire through hole (13) for connecting the load sensor with external equipment is arranged on the side wall of the outer cavity (2), and the load sensor wire through hole (13) and a through conduit realize static sealing through a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922138695.0U CN211904860U (en) | 2019-11-30 | 2019-11-30 | Follow-up high-temperature inflammable gas sealing device applied to testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922138695.0U CN211904860U (en) | 2019-11-30 | 2019-11-30 | Follow-up high-temperature inflammable gas sealing device applied to testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211904860U true CN211904860U (en) | 2020-11-10 |
Family
ID=73299626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922138695.0U Withdrawn - After Issue CN211904860U (en) | 2019-11-30 | 2019-11-30 | Follow-up high-temperature inflammable gas sealing device applied to testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211904860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823679A (en) * | 2019-11-30 | 2020-02-21 | 天津大学 | Follow-up high-temperature inflammable gas sealing device applied to testing machine |
-
2019
- 2019-11-30 CN CN201922138695.0U patent/CN211904860U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823679A (en) * | 2019-11-30 | 2020-02-21 | 天津大学 | Follow-up high-temperature inflammable gas sealing device applied to testing machine |
| CN110823679B (en) * | 2019-11-30 | 2024-06-18 | 天津大学 | Follow-up high-temperature inflammable gas sealing device applied to testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201110 Effective date of abandoning: 20240618 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201110 Effective date of abandoning: 20240618 |