CN113531391A - Sensor sealing connection mode and high-pressure gas cylinder applying same - Google Patents
Sensor sealing connection mode and high-pressure gas cylinder applying same Download PDFInfo
- Publication number
- CN113531391A CN113531391A CN202010330776.5A CN202010330776A CN113531391A CN 113531391 A CN113531391 A CN 113531391A CN 202010330776 A CN202010330776 A CN 202010330776A CN 113531391 A CN113531391 A CN 113531391A
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- Prior art keywords
- sealing
- sealing ring
- sensor
- pressure
- connection
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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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
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/20—Rings with special cross-section; Oil-scraping rings
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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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/28—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction of non-metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0388—Arrangement of valves, regulators, filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a sensor sealing connection mode and a high-pressure gas cylinder applying the same, wherein a connecting structure and a sealing structure are arranged at the head of a sensor for the high-pressure gas cylinder, the diameter of the sealing structure is smaller than that of the connecting structure to form a step shape, a groove is formed at the end part of the sealing structure and used for placing a sealing ring into the groove, the width of the sealing ring is smaller than that of the groove, a gap is formed between the sealing ring and two side walls of the groove, and the width of the sealing ring is 25% -95% of the width of the groove. Because the sealing ring in the sealing mode has a larger gap with the matched groove, the sealing ring cannot lose efficacy when being subjected to small vibration generated by high pressure; while still maintaining a seal after the hydrogen molecules have corroded.
Description
Technical Field
The invention belongs to the technical field of high-pressure gas connecting equipment, and particularly relates to a sealing connecting mode for a sensor in the processes of filling, discharging and using of a high-pressure gas device.
Background
At present, the existing high-pressure sealing device and design mainly aim at a medium which is gas or liquid with high density, the fluctuation range of the applied environment temperature change is not large, the change frequency is not high, and the displacement and the vibration between sealing connection structures caused by the severe temperature change and the environment change are not considered, so that the medium leakage can cause accidents.
In recent years, with the development of new energy automobiles, hydrogen is used as one of new energy, and high-pressure hydrogen is stored in a gas storage tank, is decompressed and is transmitted to a fuel cell, and generates electric energy to drive the automobiles to normally run. Under the application environment, the pressure of the air storage tank is as high as 70mPa, and the pressure of the air storage tank is higher along with the development of the technology in the future. The temperature of high-pressure hydrogen can rise to about 95 ℃ in the process of quick filling, because the measure of cooling down hydrogen is carried out when stopping filling, and the external environment temperature can be as low as about-50 ℃ due to the difference of regions and seasons, therefore the temperature of high-pressure gas storage tank and sealing connection device part can carry out large-scale temperature change with higher frequency in a short time, quick expend with heat and contract with cold can cause the looseness and the vibration of sealing connection part, and, because hydrogen density is extremely low, the hydrogen molecule is less, and hydrogen is still dangerous gas, the looseness of its connection part is very easily caused and is revealed, thereby causing serious accidents.
The existing high-pressure connecting part adopts axial sealing due to the limitation of the structural size and the external environment, a certain pretightening force needs to be kept in the sealing mode, and the pretightening force can fail under the vibration condition caused by large-range high-frequency change at high and low temperatures;
therefore, there is a need for a connection and sealing method that is insensitive and reliable to vibration caused by a wide range of high and low temperature and high frequency variations to ensure proper sealing of the high pressure gas device.
Disclosure of Invention
The invention relates to a sensor sealing connection mode, and aims to provide a sensor sealing connection mode in a high-pressure micro-vibration environment, which can directly lead out high-pressure through a connection device and ensure the reliability and stability of sealing performance in high-temperature, low-temperature and vibration environments. The high-pressure gas cylinder connected by the method is provided, and the high-pressure gas cylinder can ensure reliable and stable sealing under the high-pressure condition.
A sensor sealing connection mode is characterized in that a connecting structure and a sealing structure are arranged at the head of a sensor for a high-pressure gas cylinder, the diameter of the sealing structure is smaller than that of the connecting structure to form a step shape, a groove is formed in the end part of the sealing structure and used for placing a sealing ring into the groove, the width of the sealing ring is smaller than that of the groove, and the width of the sealing ring is 25% -95% of that of the groove, preferably 53.31%. The width of the groove is 2.44mm, the outer diameter is 7.62mm, and the outer diameter of the sealing ring is 8 mm. When the sealing ring works, a gap is kept between the sealing ring and the two side walls of the groove.
The high-pressure gas cylinder also comprises an output signal cable led out from the sensor, the valve is arranged at the opening end of the high-pressure gas cylinder and used for storing high-pressure hydrogen gas with the pressure being more than 50MP, and a pressure reducing valve is further arranged at one end of the valve.
Compared with the prior art, the sealing ring in the sealing mode has larger clearance with the matched groove, so that the sealing ring cannot lose efficacy when being subjected to small vibration generated by high pressure; while still maintaining a seal after the hydrogen molecules have corroded.
Drawings
FIG. 1 is a schematic view of a seal connection with a valve;
FIG. 2 is a schematic view of a high pressure gas cylinder application;
FIG. 3 is a schematic view of a sealing connection;
FIG. 4 is a schematic view of a valve internal interface;
fig. 5 is a cross-sectional view of the ladder type seal ring.
1. Connection structure, 2 sealing structure, 3 sealing ring, 4 valve, 5 high-pressure gas, 6 high-pressure gas bottle, 7 sensor, 8 output signal cable, 9 gas pressure leading channel, 10 pressure reducing valve, 11 groove
Detailed Description
As shown in the attached figures 1-5, the sensor sealing connection mode is characterized in that a connecting structure 1 and a sealing structure 2 are arranged at the head of a sensor 7 for a high-pressure gas cylinder, the diameter of the sealing structure 2 is smaller than that of the connecting structure 1 to form a step shape, a groove 11 is formed in the end part of the sealing structure, the groove 11 is used for placing a sealing ring 3 into the groove, the width of the sealing ring is smaller than that of the groove, a gap is kept between the sealing ring and the two side walls of the groove, and the width of the sealing ring is 25% -95% of the width of the groove during operation. The sealing structure and the connecting structure are integrally arranged, or the connecting structure and the sensor are integrally arranged, or the sealing structure, the connecting structure and the sensor are integrally arranged. The sensor 7 is fixed on the high-pressure gas cylinder valve through a connecting structure, and the connecting mode can be threaded connection, flange connection or a connecting mode which is convenient to disassemble and assemble; the inside of the sensor, the sealing structure and the connecting structure are provided with communicated through holes for leading out high-pressure, and the through holes are connected with a gas pressure leading channel 9 inside the valve 4.
The sealing ring is a circular sealing ring, a rectangular sealing ring or a trapezoid sealing ring, wherein the section of the trapezoid sealing ring is formed by combining an upper trapezoid and a lower rectangle. The sealing ring is made of high and low temperature resistant elastic sealing material with hardness greater than 80, the temperature resistance is-50 to 95 ℃, and the sealing ring can be made of thermoplastic polyurethane elastomer rubber (TPU). The gas pressure introduction passage 9 of the valve is formed with a 15-90 degree angle flare at the end position of the seal structure, and the step between the connection structure and the seal structure has an inclination angle of 15-90 degrees, preferably 60 degrees, in the space inside the valve accommodating the connection structure and the seal structure.
The high-pressure gas cylinder utilizes the sensor sealing connection mode, and further comprises an output signal cable 8 extending out of the sensor, a valve is arranged at the opening end of the high-pressure gas cylinder 6 and used for storing high-pressure hydrogen gas above 50MP, and a pressure reducing valve 10 is further arranged at one end of the valve.
In the prior art, the sealing structure for the sensor and the valve body usually utilizes a shoulder part between the connecting structure and the sealing structure to realize axial sealing of the end part, and the sealing form is used for sealing high-pressure hydrogen, because high-pressure canning is required when repeated hydrogen filling is carried out, the pressure reaches 50mPa or even above, the temperature of the hydrogen can change rapidly under the condition, so that the internal pressure generates rapid micro-vibration, and the original sealing form is very easy to fail under the high-pressure vibration. When the sealing mode adopts the radial sealing of the sealing structure, if the size of the sealing ring is completely matched with that of the sealing groove for accommodating the sealing ring, the outer side of the sealing ring is extruded between the valve body and the sealing structure in the micro-vibration process, so that the sealing failure is caused. Therefore, when the width of the sealing ring is smaller than the size of the groove, under the condition of micro-vibration, the sealing ring has a clearance allowance, so that the long-time effectiveness of sealing can be ensured, and the sealing effect can still be kept after the hydrogen molecules are corroded. When the trapezoidal sealing ring is used, the sealing effect is better.
Claims (10)
1. The utility model provides a sensor seal connection mode sets up connection structure and seal structure at the sensor head that is used for the high-pressure gas cylinder, its characterized in that: the diameter of the sealing structure is smaller than that of the connecting structure to form a step shape, a groove is formed in the end portion of the sealing structure and used for placing a sealing ring into the groove, the width of the sealing ring is smaller than that of the groove, the width of the sealing ring is 25% -95% of that of the groove, and a gap is kept between the sealing ring and two side walls of the groove during working.
2. The sealed sensor connection of claim 1, wherein: the width of sealing washer is 53.31% of recess width, and the recess width is 2.44mm, and the external diameter is 7.62mm, and the sealing washer external diameter is 8 mm.
3. The sealed sensor connection of claim 1, wherein: the sealing structure and the connecting structure are integrally arranged, or the connecting structure and the sensor are integrally arranged, or the sealing structure, the connecting structure and the sensor are integrally arranged.
4. The sealed sensor connection of claim 1, wherein: the sensor is fixed on the high-pressure gas cylinder valve through a connecting structure, and the connecting mode can be threaded connection, flange connection or a connecting mode which is convenient to disassemble and assemble; the inside of the sensor, the sealing structure and the connecting structure are provided with communicated through holes for leading out high-pressure, and the through holes are connected with a gas pressure leading channel inside the valve.
5. The sealed sensor connection of claim 1, wherein: the sealing ring is a circular sealing ring, a rectangular sealing ring or a trapezoid sealing ring, wherein the section of the trapezoid sealing ring is formed by combining an upper trapezoid and a lower rectangle.
6. The sealed sensor connection of claim 5, wherein: the sealing ring is made of high and low temperature resistant elastic sealing material with the hardness of more than 80 ℃, and the tolerance temperature of the sealing ring is-50 to 95 ℃.
7. The sealed sensor connection of claim 6, wherein: the material of the sealing ring is thermoplastic polyurethane elastomer rubber.
8. The sealed sensor connection of claim 4, wherein: the gas pressure-leading channel of the valve is provided with a 15-90 degree flaring at the end position of the sealing structure, the connecting structure and the sealing structure are accommodated in the valve, and the step between the connecting structure and the sealing structure has a 15-90 degree inclination angle.
9. The sealed sensor connection of claim 8, wherein: the flare is 60 degrees.
10. A high-pressure gas cylinder using the sensor sealing connection method of claims 1 to 9, characterized in that: the hydrogen gas hydrogen storage device is characterized by further comprising an output signal cable led out from the sensor, the valve is connected to the opening end of the high-pressure gas cylinder, the high-pressure gas cylinder is used for storing high-pressure hydrogen gas with the pressure being more than 50MP, and one end of the valve is further connected with a pressure reducing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330776.5A CN113531391A (en) | 2020-04-14 | 2020-04-14 | Sensor sealing connection mode and high-pressure gas cylinder applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330776.5A CN113531391A (en) | 2020-04-14 | 2020-04-14 | Sensor sealing connection mode and high-pressure gas cylinder applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113531391A true CN113531391A (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010330776.5A Pending CN113531391A (en) | 2020-04-14 | 2020-04-14 | Sensor sealing connection mode and high-pressure gas cylinder applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113531391A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201934893U (en) * | 2010-12-15 | 2011-08-17 | 西安向阳航天材料股份有限公司 | Novel gas bottle for filling nitrogen |
| CN203880077U (en) * | 2014-06-10 | 2014-10-15 | 西南石油大学 | Bracket sealing device for liquid medium large-diameter high-pressure container |
| CN204083804U (en) * | 2014-08-14 | 2015-01-07 | 石家庄安瑞科气体机械有限公司 | A kind of gas cylinder and sealing configuration thereof |
| CN108224084A (en) * | 2016-12-15 | 2018-06-29 | 现代自动车株式会社 | For measuring the system of the high pressure of tank internal adjuster |
| CN207635003U (en) * | 2017-11-11 | 2018-07-20 | 成都龙泰工业气体有限公司 | A kind of industrial gasses hold-up tank with explosion prevention function |
| CN108679440A (en) * | 2018-07-05 | 2018-10-19 | 张家港富瑞氢能装备有限公司 | A kind of high-pressure hydrogen storage cylinder |
-
2020
- 2020-04-14 CN CN202010330776.5A patent/CN113531391A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201934893U (en) * | 2010-12-15 | 2011-08-17 | 西安向阳航天材料股份有限公司 | Novel gas bottle for filling nitrogen |
| CN203880077U (en) * | 2014-06-10 | 2014-10-15 | 西南石油大学 | Bracket sealing device for liquid medium large-diameter high-pressure container |
| CN204083804U (en) * | 2014-08-14 | 2015-01-07 | 石家庄安瑞科气体机械有限公司 | A kind of gas cylinder and sealing configuration thereof |
| CN108224084A (en) * | 2016-12-15 | 2018-06-29 | 现代自动车株式会社 | For measuring the system of the high pressure of tank internal adjuster |
| CN207635003U (en) * | 2017-11-11 | 2018-07-20 | 成都龙泰工业气体有限公司 | A kind of industrial gasses hold-up tank with explosion prevention function |
| CN108679440A (en) * | 2018-07-05 | 2018-10-19 | 张家港富瑞氢能装备有限公司 | A kind of high-pressure hydrogen storage cylinder |
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Application publication date: 20211022 |
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| WD01 | Invention patent application deemed withdrawn after publication |