CN113531383B - High-pressure gas cylinder sealing structure - Google Patents
High-pressure gas cylinder sealing structure Download PDFInfo
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- CN113531383B CN113531383B CN202110826578.2A CN202110826578A CN113531383B CN 113531383 B CN113531383 B CN 113531383B CN 202110826578 A CN202110826578 A CN 202110826578A CN 113531383 B CN113531383 B CN 113531383B
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- Prior art keywords
- plug
- bottle
- component
- bottle opening
- bottle mouth
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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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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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
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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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
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
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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
- F17C13/06—Closures, e.g. cap, breakable member
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/032—Orientation with substantially vertical main axis
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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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a high-pressure gas cylinder sealing structure which comprises a cover cap, an upper gland, a sealing wedge, a large sealing ring, a small sealing ring, a lower sealing seat, a bottle opening plug, a sealing ring and a threading pipe, wherein the upper gland is arranged on the cover cap; the bottle mouth plug comprises a bottle mouth plug first component, a bottle mouth plug second component and a bottle mouth plug third component which are fixedly connected from top to bottom, and external threads are arranged on the outer side walls of the bottle mouth plug first component and the bottle mouth plug third component; a bottle opening plug pipe hole is formed in the first bottle opening plug component and the second bottle opening plug component, a bottle opening plug fixing hole is formed in the right center of the bottom of the third bottle opening plug component, internal threads are formed in the inner wall of the bottle opening plug fixing hole, and the bottle opening plug pipe hole extends into the third bottle opening plug component to be communicated with the bottle opening plug fixing hole; the bottle plug tube hole and the bottle plug fixing hole jointly penetrate through the top and the bottom of the bottle plug; the invention can ensure that the data transmission lines of the temperature sensors distributed in the gas cylinder are well sealed at the bottleneck in the gas cylinder inflation process.
Description
Technical Field
The invention relates to the technical field of hydrogen energy, in particular to a high-pressure gas cylinder sealing structure.
Background
The hydrogen energy has the advantages of wide source, high energy efficiency, renewable and zero pollution of combustion products, and the like, and is becoming the focus of energy innovation and re-industrialization of the main developed economy and nations in the world. In recent years, hydrogen energy development strategies have been developed in the united states, japan, china, korea, the european union, etc., and hydrogen energy automobiles have been developed with great force, and the construction of hydrogen energy infrastructure such as hydrogen stations has been actively advanced.
In the development of the hydrogen energy industry chain, hydrogen stations have received attention from researchers worldwide as one of the basic settings for hydrogen supply. Depending on the manner of hydrogen storage, the hydrogen addition stations may be classified into two types, a gas hydrogen addition station and a liquid hydrogen addition station. Because the gas hydrogen hydrogenation station has the advantages of low energy consumption, high hydrogenation speed, high reliability and the like, the existing hydrogenation stations in China mostly adopt the hydrogen hydrogenation station. In order to improve the market competitiveness of hydrogen energy in energy and traffic industry, convenience, safety, high efficiency and economy of hydrogenation like oiling must be ensured. Therefore, the technical means is utilized, the temperature rise in the vehicle-mounted hydrogen storage container in the hydrogenation process is strictly controlled on the premise of ensuring the hydrogen filling rate and the pressure, and the potential safety hazard caused by the temperature rise is eliminated, so that the temperature of different parts in the gas cylinder in the inflation process is necessary to be measured and researched.
The existing temperature measuring device has the following defects:
the sealing problem of the data transmission line of the temperature sensor at the bottle mouth cannot be solved.
Accordingly, improvements in the art are needed.
Disclosure of Invention
The invention aims to provide an efficient high-pressure gas cylinder sealing structure.
In order to solve the technical problems, the invention provides a high-pressure gas cylinder sealing structure, which comprises a cap, an upper gland, a sealing wedge, a large sealing ring, a small sealing ring, a lower sealing seat, a bottle opening plug, a sealing ring and a threading pipe;
the bottle mouth plug comprises a bottle mouth plug first component, a bottle mouth plug second component and a bottle mouth plug third component which are fixedly connected from top to bottom, and external threads are arranged on the outer side walls of the bottle mouth plug first component and the bottle mouth plug third component;
a bottle opening plug pipe hole is formed in the first bottle opening plug component and the second bottle opening plug component, a bottle opening plug fixing hole is formed in the right center of the bottom of the third bottle opening plug component, internal threads are formed in the inner wall of the bottle opening plug fixing hole, and the bottle opening plug pipe hole extends into the third bottle opening plug component to be communicated with the bottle opening plug fixing hole; the bottle plug tube hole and the bottle plug fixing hole jointly penetrate through the top and the bottom of the bottle plug;
an inflation inlet communicated with the bottle opening plug hole is formed in the side wall of the bottle opening plug second assembly;
an internal thread is arranged at the inner side of the bottle mouth of the gas bottle, a third component of the bottle mouth plug is in threaded connection with the gas bottle,
the bottom of the cap is provided with a cap fixing cavity, steps are arranged around the top of the cap fixing cavity, and the bottom of the inner side wall of the cap fixing cavity is provided with internal threads; the top of the cap is provided with an outlet communicated with the cap fixing cavity;
the first bottle mouth plug component is in threaded connection with a cap fixing cavity of the cap, and an upper gland, a sealing wedge and a lower sealing seat are sequentially pressed between the bottom of the step and the top of the first bottle mouth plug component from top to bottom;
the upper gland and the lower seal seat are provided with corresponding upper gland wire outlet holes and lower seal seat wire outlet holes, the periphery of the bottom of the upper gland wire outlet holes is provided with conical surfaces, and the periphery of the top of the lower seal seat wire outlet holes is provided with lower seal seat fixing grooves;
the sealing wedge is of a frustum shape, the bottom of the sealing wedge is embedded into the fixing groove of the lower sealing seat, and the side wall of the sealing wedge is abutted with the conical surface;
the top of the outer side wall of the threading pipe is provided with external threads, the top of the threading pipe is in threaded connection with the bottle mouth plug fixing hole, and when the bottle mouth plug fixing hole is used, the top of the threading pipe is screwed into the bottle mouth plug fixing hole until reaching the top of the bottle mouth plug fixing hole;
the threading pipe is hollow and tubular, the inner cavity of the threading pipe is communicated with the bottleneck plug pipe hole, and a plurality of threading pipe air inlets are formed in the side wall of the threading pipe from top to bottom at equal intervals;
and a plurality of temperature sensors are further arranged on the threading pipe, the temperature sensors transmit collected temperature data through leads, and the leads penetrate through an air inlet hole of the threading pipe, an inner cavity of the threading pipe and a plug hole of a bottle mouth, then penetrate out of an upper gland wire outlet hole, a sealing wedge and a lower sealing seat wire outlet hole and then are led out of a wire outlet.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
the bottle mouth plug second component is in the shape of a hexagon bolt, and the diameter of the bottle mouth plug second component is larger than that of the bottle mouth plug first component and that of the bottle mouth plug third component.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
the bottle mouth plug tube hole and the bottle mouth plug fixing hole are both positioned on the central axis of the bottle mouth plug, and the diameter of the bottle mouth plug fixing hole is larger than that of the bottle mouth plug tube hole.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
the outer side wall of the third component of the bottle opening plug is provided with a sealing ring, and the sealing ring is positioned below the external threads of the outer side wall of the third component of the bottle opening plug.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
the step is provided with a clamping table, and the upper gland is embedded into the clamping table for fixing.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
and a large sealing ring is arranged between the upper gland and the lower sealing seat, corresponding upper gland grooves and lower sealing seat first grooves are formed in the bottom of the upper gland and the top of the lower sealing seat, two ends of the large sealing ring are respectively embedded into the upper gland grooves and the lower sealing seat first grooves, and the sealing wedge is positioned on the inner side of the large sealing ring.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
the small sealing ring is arranged between the lower sealing seat and the first bottleneck plug assembly, a corresponding lower sealing seat second groove and a corresponding bottleneck plug first assembly groove are formed in the bottom of the lower sealing seat and the top of the first bottleneck plug assembly, two ends of the small sealing ring are respectively embedded into the lower sealing seat second groove and the bottleneck plug first assembly groove, sealing wedges and bottleneck plug pipe holes are located in the small sealing ring, and the small sealing ring plays a role in sealing.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
the sealing ring is made of nitrile rubber, and the sealing wedge, the large sealing ring and the small sealing ring are made of polytetrafluoroethylene.
As an improvement of the device for measuring the internal temperature of the high-pressure gas cylinder, the invention is that:
annular lower sealing seat bulges are arranged on the periphery of the bottom of the lower sealing seat, and the top of the bottle opening plug first component is embedded between the lower sealing seat bulges to be fixed.
The high-pressure gas cylinder sealing structure has the technical advantages that:
after the cap and the bottle mouth plug are screwed up by threads, the upper gland is pressed downwards, the conical surface on the upper gland extrudes and seals the sealing wedge penetrated with the lead, and good sealing around the lead is ensured. Meanwhile, the large sealing ring between the upper gland and the lower sealing seat and the small sealing ring between the lower sealing seat and the bottle mouth plug are also in extrusion sealing, so that high-pressure gas in the bottle is prevented from leaking. In addition, the joint of the bottle mouth plug and the gas cylinder is also provided with a sealing ring for sealing, so that gas leakage is prevented. The invention can ensure that the data transmission lines of the temperature sensors distributed in the gas cylinder are well sealed at the bottleneck in the gas cylinder inflation process.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view showing a structure in which a high-pressure gas cylinder sealing structure of the present invention is installed in a gas cylinder 16;
FIG. 2 is a cross-sectional view taken along the direction C-C in FIG. 1;
FIG. 3 is a cross-sectional view taken along the direction D-D in FIG. 1;
fig. 4 is a schematic view of the structure of the finish plug 7 in fig. 1;
fig. 5 is a schematic view of the structure of the cap 1 of fig. 1;
fig. 6 is a schematic view of the structure of the upper gland 2 in fig. 1;
fig. 7 is a schematic view of the structure of the lower seal holder 6 in fig. 1;
fig. 8 is a schematic view of the structure of the cap 1 of fig. 1 in cooperation with the finish plug 7.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1 an apparatus for measuring the internal temperature of a high pressure gas cylinder, shown in example 1, is used for measuring a gas cylinder 16, comprising a cap 1, an upper gland 2, a sealing wedge 3, a large sealing ring 4, a small sealing ring 5, a lower sealing seat 6, a bottle mouth plug 7, a sealing ring 8 and a threading pipe 9.
The bottle mouth plug 7 comprises a bottle mouth plug first component 71, a bottle mouth plug second component 72 and a bottle mouth plug third component 73 which are fixedly connected from top to bottom, the bottle mouth plug second component 72 is in the shape of a hexagonal bolt, and external threads are arranged on the outer side walls of the bottle mouth plug first component 71 and the bottle mouth plug third component 73; the diameter of the finish plug second component 72 is larger than the diameters of the finish plug first component 71 and the finish plug third component 73, so that a worker can conveniently screw the finish plug 7 through a hexagonal bolt (the finish plug second component 72).
The first and second bottle plug assemblies 71 and 72 are provided with bottle plug tube holes 721, the bottom of the third bottle plug assembly 73 is provided with bottle plug fixing holes 731 at the right center, the inner wall of the bottle plug fixing holes 731 is provided with internal threads, and the bottle plug tube holes 721 extend into the third bottle plug assembly 73 to be communicated with the bottle plug fixing holes 731. The plug aperture 721 and the plug securing aperture 731 extend through both the top and bottom of the plug 7.
Both the bottle plug aperture 721 and the bottle plug fixing aperture 731 are located on the central axis of the bottle plug 7, and the diameter of the bottle plug fixing aperture 731 is larger than that of the bottle plug aperture 721.
The sidewall of the bottle opening plug second assembly 72 is also provided with an inflation port 722 in communication with a bottle opening plug aperture 721, through which the gas cylinder 16 can be inflated and deflated.
The inner side of the bottle mouth of the gas bottle 16 is provided with an internal thread, the third bottle mouth plug assembly 73 is in threaded connection with the gas bottle 16, the outer side wall of the third bottle mouth plug assembly 73 is also provided with a sealing ring 8, the sealing ring 8 is positioned below the external thread of the outer side wall of the third bottle mouth plug assembly 73, and the sealing ring 8 is tightly attached to the bottle mouth of the gas bottle 16 and used for sealing the gas bottle 16.
The bottom of the cap 1 is provided with a cap fixing cavity 1001, steps 1002 are arranged around the top of the cap fixing cavity 1001, and the bottom of the inner side wall of the cap fixing cavity 1001 is provided with internal threads; the cap 1 is provided at the top with a wire outlet 1004 communicating with the cap fixing chamber 1001.
The first component 71 of bottleneck stopper is screwed with the fixed chamber 1001 of the block 1 of the block, compress tightly from top to bottom and is provided with upper gland 2, sealing wedge 3 and lower seal seat 6 between step 1002 bottom and the first component 71 top of bottleneck stopper in proper order. The step 1002 is provided with a clamping table 1003, and the upper gland 2 is embedded into the clamping table 1003 for fixing.
The upper gland 2 and the lower seal seat 6 are provided with corresponding upper gland wire outlet holes 21 and lower seal seat wire outlet holes 61, the upper gland wire outlet holes 21 and the lower seal seat wire outlet holes 61 are aligned when in use, the upper gland 2 is provided with conical surfaces 211 around the bottom of the upper gland wire outlet holes 21, and the lower seal seat 6 is provided with lower seal seat fixing grooves 611 around the top of the lower seal seat wire outlet holes 61.
The sealing wedge 3 is in a frustum shape, the bottom of the sealing wedge 3 is embedded in the lower sealing seat fixing groove 611, and the side wall of the sealing wedge 3 is abutted against the conical surface 211, so that the sealing wedge 3 is compressed when the upper gland 2 and the lower sealing seat 6 are pressed.
The large sealing ring 4 can be arranged between the upper gland 2 and the lower sealing seat 6, the corresponding upper gland groove 22 and the corresponding lower sealing seat first groove 62 are formed in the bottom of the upper gland 2 and the top of the lower sealing seat 6, two ends of the large sealing ring 4 are respectively embedded into the upper gland groove 22 and the lower sealing seat first groove 62, the sealing wedge 3 is positioned on the inner side of the large sealing ring 4, and the large sealing ring 4 plays a role in sealing.
The small sealing ring 5 can be arranged between the lower sealing seat 6 and the bottle opening plug first component 71, the corresponding lower sealing seat second groove 63 and the bottle opening plug first component groove 711 are formed in the bottom of the lower sealing seat 6 and the top of the bottle opening plug first component 71, two ends of the small sealing ring 5 are respectively embedded into the lower sealing seat second groove 63 and the bottle opening plug first component groove 711, the sealing wedge 3 and the bottle opening plug pipe hole 721 are both positioned in the small sealing ring 5, and the small sealing ring 5 plays a role in sealing.
The sealing ring 8 is made of nitrile rubber, and the sealing wedge 3, the large sealing ring 4, the small sealing ring 5 and the like can be made of polytetrafluoroethylene, so that good sealing effect is ensured.
Annular lower seal seat bulges 64 are arranged on the periphery of the bottom of the lower seal seat 6, and the top of the bottle mouth plug first component 71 is embedded between the lower seal seat bulges 64 for fixing.
The outer side wall top of threading pipe 9 is provided with the external screw thread, and threading pipe 9 top and bottleneck stopper fixed orifices 731 threaded connection, during the use, threading pipe 9 top screw in bottleneck stopper fixed orifices 731 in until reaching bottleneck stopper fixed orifices 731 top.
The threading pipe 9 is hollow tubular, the inner cavity of the threading pipe 9 is communicated with the bottleneck plug hole 721, a plurality of threading pipe air inlets 191 are formed in the side wall of the threading pipe 9 from top to bottom at equal intervals, and inflation is carried out through the threading pipe air inlets 191.
The side wall of the threading pipe 9 is also provided with a plurality of temperature sensors, the temperature sensors are used for acquiring temperature data and transmitting the temperature data through leads, the leads penetrate through an air inlet 191 of the threading pipe, an inner cavity of the threading pipe 9 and a plug hole 721 of a bottle mouth, then penetrate out of an upper gland wire outlet 21, a sealing wedge 3 and a wire outlet 61 of a lower sealing seat, and are led out of a wire outlet 1004 to be connected with a data acquisition card, so that analog signals acquired by the temperature sensors are converted into temperature data for storage.
With respect to the sealing problem of the leads at the mouth of the bottle. After the cap 1 and the bottle mouth plug 7 are screwed down, the upper gland 2 is pressed down, the conical surface 211 on the upper gland 2 presses and seals the sealing wedge 3 with the lead wire in a penetrating way, and good sealing around the lead wire is ensured. Meanwhile, the large sealing ring 4 between the upper gland 2 and the lower sealing seat 6 and the small sealing ring 5 between the lower sealing seat 6 and the bottle mouth plug 7 are also in extrusion sealing, so that high-pressure gas in the bottle is ensured not to leak. In addition, the joint of the bottle mouth plug 7 and the gas bottle 16 is also provided with a sealing ring for sealing, so that gas leakage is prevented.
Finally, it should also be noted that the above list is merely a few specific embodiments of the present invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.
Claims (9)
1. The utility model provides a high pressure gas cylinder seal structure which characterized in that: the sealing device comprises a cap (1), an upper gland (2), a sealing wedge (3), a large sealing ring (4), a small sealing ring (5), a lower sealing seat (6), a bottle mouth plug (7), a sealing ring (8) and a threading pipe (9); the bottle mouth plug (7) comprises a bottle mouth plug first component (71), a bottle mouth plug second component (72) and a bottle mouth plug third component (73) which are fixedly connected from top to bottom, and external threads are arranged on the outer side walls of the bottle mouth plug first component (71) and the bottle mouth plug third component (73); a bottle opening plug pipe hole (721) is formed in the bottle opening plug first component (71) and the bottle opening plug second component (72), a bottle opening plug fixing hole (731) is formed in the right center of the bottom of the bottle opening plug third component (73), internal threads are formed in the inner wall of the bottle opening plug fixing hole (731), and the bottle opening plug pipe hole (721) extends into the bottle opening plug third component (73) to be communicated with the bottle opening plug fixing hole (731); the bottle mouth plug tube hole (721) and the bottle mouth plug fixing hole (731) jointly penetrate through the top and the bottom of the bottle mouth plug (7); an inflation inlet (722) communicated with the bottle opening plug tube hole (721) is formed in the side wall of the bottle opening plug second assembly (72); the inner side of the bottle mouth of the gas bottle (16) is provided with internal threads, a third bottle mouth plug assembly (73) is in threaded connection with the gas bottle (16), a cap fixing cavity (1001) is formed in the bottom of the cap (1), steps (1002) are formed in the periphery of the top of the cap fixing cavity (1001), and internal threads are formed in the bottom of the inner side wall of the cap fixing cavity (1001); the top of the cap (1) is provided with a wire outlet (1004) communicated with the cap fixing cavity (1001); the bottle mouth plug first assembly (71) is in threaded connection with a cap fixing cavity (1001) of the cap (1), and an upper gland (2), a sealing wedge (3) and a lower sealing seat (6) are sequentially pressed between the bottom of the step (1002) and the top of the bottle mouth plug first assembly (71) from top to bottom; the upper gland (2) and the lower seal seat (6) are provided with an upper gland wire outlet hole (21) and a lower seal seat wire outlet hole (61) which correspond to each other, the periphery of the bottom of the upper gland wire outlet hole (21) of the upper gland (2) is provided with a conical surface (211), and the periphery of the top of the lower seal seat wire outlet hole (61) of the lower seal seat (6) is provided with a lower seal seat fixing groove (611); the sealing wedge (3) is in a frustum shape, the bottom of the sealing wedge (3) is embedded into the lower sealing seat fixing groove (611), and the side wall of the sealing wedge (3) is abutted with the conical surface (211); the top of the outer side wall of the threading pipe (9) is provided with external threads, the top of the threading pipe (9) is in threaded connection with the bottle mouth plug fixing hole (731), and when the bottle mouth plug fixing device is used, the top of the threading pipe (9) is screwed into the bottle mouth plug fixing hole (731) until reaching the top of the bottle mouth plug fixing hole (731); the threading pipe (9) is hollow and tubular, the inner cavity of the threading pipe (9) is communicated with the bottle mouth plug pipe hole (721), and a plurality of threading pipe air inlets (191) are formed in the side wall of the threading pipe (9) from top to bottom at equal intervals; the threading pipe (9) is also provided with a plurality of temperature sensors, temperature data of the temperature sensors are collected through lead transmission, the lead passes through a wire pipe air inlet hole (191), an inner cavity of the threading pipe (9) and a bottleneck plug hole (721), then the lead passes through an upper gland wire outlet hole (21), a sealing wedge (3) and a lower sealing seat wire outlet hole (61), and then the lead is led out from a wire outlet (1004).
2. The high pressure gas cylinder seal structure according to claim 1, wherein: the bottle mouth plug second component (72) is in the shape of a hexagon bolt, and the diameter of the bottle mouth plug second component (72) is larger than that of the bottle mouth plug first component (71) and that of the bottle mouth plug third component (73).
3. A high pressure gas cylinder seal arrangement as claimed in claim 2, wherein: the bottle opening plug tube hole (721) and the bottle opening plug fixing hole (731) are both positioned on the central axis of the bottle opening plug (7), and the diameter of the bottle opening plug fixing hole (731) is larger than that of the bottle opening plug tube hole (721).
4. A high pressure gas cylinder seal arrangement according to claim 3, wherein: the outer side wall of the bottle opening plug third assembly (73) is provided with a sealing ring (8), and the sealing ring (8) is positioned below the external threads of the outer side wall of the bottle opening plug third assembly (73).
5. The high pressure gas cylinder seal structure according to claim 4, wherein: the clamping table (1003) is arranged on the step (1002), and the upper pressing cover (2) is embedded into the clamping table (1003) for fixing.
6. The high pressure gas cylinder seal structure according to claim 5, wherein: a large sealing ring (4) is arranged between the upper gland (2) and the lower sealing seat (6), corresponding upper gland grooves (22) and lower sealing seat first grooves (62) are formed in the bottoms of the upper gland (2) and the tops of the lower sealing seat (6), two ends of the large sealing ring (4) are respectively embedded into the upper gland grooves (22) and the lower sealing seat first grooves (62), and the sealing wedge (3) is positioned on the inner side of the large sealing ring (4).
7. The high pressure gas cylinder seal structure according to claim 6, wherein: a small sealing ring (5) is arranged between a lower sealing seat (6) and a bottle opening plug first component (71), a corresponding lower sealing seat second groove (63) and a bottle opening plug first component groove (711) are formed in the bottom of the lower sealing seat (6) and the top of the bottle opening plug first component (71), two ends of the small sealing ring (5) are respectively embedded into the lower sealing seat second groove (63) and the bottle opening plug first component groove (711), sealing wedges (3) and bottle opening plug pipe holes (721) are all located in the small sealing ring (5), and the small sealing ring (5) plays a role in sealing.
8. The high pressure gas cylinder seal structure according to claim 4, wherein: the sealing ring (8) is made of nitrile rubber, and the sealing wedge (3), the large sealing ring (4) and the small sealing ring (5) are made of polytetrafluoroethylene.
9. The high pressure gas cylinder seal structure according to claim 8, wherein: annular lower sealing seat bulges (64) are arranged around the bottom of the lower sealing seat (6), and the tops of the bottle opening plug first assemblies (71) are embedded into the lower sealing seat bulges (64) to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110826578.2A CN113531383B (en) | 2021-07-21 | 2021-07-21 | High-pressure gas cylinder sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110826578.2A CN113531383B (en) | 2021-07-21 | 2021-07-21 | High-pressure gas cylinder sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN113531383A CN113531383A (en) | 2021-10-22 |
| CN113531383B true CN113531383B (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110826578.2A Active CN113531383B (en) | 2021-07-21 | 2021-07-21 | High-pressure gas cylinder sealing structure |
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| CN114216048B (en) * | 2021-12-21 | 2023-07-28 | 格林美(武汉)城市矿山产业集团有限公司 | Gas leakage device for safely discharging hydrogen from vehicle-mounted hydrogen storage cylinder and use method |
| CN114935107A (en) * | 2022-06-15 | 2022-08-23 | 浙江浙能航天氢能技术有限公司 | Simple hydrogenation device |
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| CN113531383A (en) | 2021-10-22 |
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