Hydrogen storage bottle opening valve convenient to disassemble and assemble and high in leakproofness

Abstract

The invention belongs to the technical field of valve bodies, and particularly relates to a hydrogen storage bottle opening valve convenient to disassemble and assemble and high in leakproofness. The hydrogen storage bottle opening valve comprises an upper valve block and a lower valve block which are integrally connected, the lower valve block is further provided with a second gas conveying channel, and a safety valve opening is formed in the fourth side face and internally provided with a safety valve; the bottom of the safety valve port is provided with a safety channel communicated with the second gas transmission channel, the second side face is provided with a manual discharge valve port, the manual discharge valve port is provided with a manual discharge channel communicated with the safety channel, and the third side face is provided with a safety exhaust port. The safety valve and the manual discharge valve can be connected in an inserted mode to be used for exhausting, meanwhile, the adjustable stop valve can play a role of a one-way valve, the safety valve can be connected in an inserted mode to be used for discharging air, the safety valve can be used for discharging air, the safety valve can be used for discharging air, and the safety valve can be used for discharging air. Compared with an existing plug-in type stop valve, the plug-in type stop valve has the advantages of being smaller in structure and high in sealing performance.

Description

Technical Field

[0001] The invention belongs to the technical field of valve bodies, and in particular relates to a hydrogen storage bottle mouth valve which is easy to disassemble and assemble and has high airtightness. Background Art

[0002] As the global demand for clean energy grows, hydrogen energy, as an efficient and clean energy carrier, has gradually attracted widespread attention in the automotive field. Hydrogen energy vehicles use hydrogen as fuel, and use fuel cells to react hydrogen with oxygen to generate electricity to drive the vehicle. They have significant advantages such as zero emissions and high energy conversion efficiency.

[0003] In the hydrogen supply system of hydrogen energy vehicles, the gas supply valve at the mouth of the hydrogen cylinder plays a vital role. The valve bodies used in the mouth of some hydrogen cylinders on the market have exposed many problems in actual applications. Although some existing valve bodies have certain convenience in plug-in operation and are relatively easy to maintain, they have obvious shortcomings in miniaturization and sealing performance. In the process of pursuing valve body miniaturization, maintaining good sealing performance has become a major challenge. After the miniaturization design of the traditional valve body, the sealing structure is often difficult to balance compactness and sealing. When it is subjected to high-pressure hydrogen and complex and changeable working conditions for a long time, it is very easy to fail in sealing. For example, some existing one-way valves only rely on springs and other elastic parts for pre-compression sealing, which easily causes insufficient sealing strength. Therefore, the development of a hydrogen cylinder mouth valve body that is convenient for plug-in and maintenance, can achieve miniaturization design, and can also ensure good sealing performance has become a key problem that needs to be solved in the new energy vehicle industry, which is of great significance to promoting the steady development of the new energy vehicle industry. Summary of the invention

[0004] In view of the above problems, the present invention proposes a hydrogen storage bottle mouth valve which is easy to disassemble and assemble and has high airtightness, which effectively solves the problem in the prior art that the valve body design cannot effectively ensure good sealing when it is miniaturized and integrated.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a hydrogen storage bottle mouth valve which is easy to disassemble and assemble and has high airtightness, comprising an upper valve block and a lower valve block which are connected as one body, the side surfaces of the upper valve block comprising a first side surface, a second side surface, a third side surface, a fourth side surface and a fifth side surface, an air inlet interface is provided on the first side surface, a first channel which is connected is provided on the second side surface and the fifth side surface, a stop valve interface and a solenoid valve interface are provided at both ends of the first channel respectively, the air inlet interface is connected to the stop valve interface, a stop valve and a solenoid valve are respectively installed on the stop valve interface and the solenoid valve interface, a first air transmission channel which is connected to the solenoid valve interface at the upper end of the lower valve block, a second air transmission channel is also provided on the lower valve block, a safety valve port is provided on the fourth side surface, a safety valve is installed in the safety valve port, and the A safety passage connected to a second gas transmission passage is provided at the bottom of the safety valve port, a manual discharge valve port is provided at the second side, a manual discharge valve port is provided at the manual discharge valve port and the safety passage is provided at the third side, a first connecting passage and a second connecting passage respectively connected to the manual discharge valve port and the safety valve port are provided at the bottom of the safety exhaust port, an adjustable stop valve is installed in the manual discharge valve port, the adjustable stop valve comprises a plug-in valve body, an adjusting bolt which can be screwed into an upper valve block is provided at the center of the plug-in valve body, the middle part of the adjusting bolt is sealed with the plug-in valve body, the upper part of the adjusting bolt is abutted with a spring, the upper part of the spring is abutted with a plug, an exploration port is provided at the upper end of the plug-in valve body, the upper part of the plug passes through the exploration port and abuts against the first connecting passage.

[0006] Furthermore, a sealing cavity is provided inside the plug-in valve body, the middle diameter of the adjusting bolt matches the clearance of the sealing cavity, an inner sealing groove is provided on the outer middle part of the adjusting bolt, a sealing member is installed in the inner sealing groove, an adjusting screw hole connected to the sealing cavity is provided on the lower side of the plug-in valve body, and the lower part of the adjusting bolt is threadedly connected to the adjusting screw hole.

[0007] Furthermore, a cover is connected to the upper part of the plug-in valve body, the plug is slidably connected in the cover, the probe outlet is located at the upper part of the cover, the plug includes a sealing head and an abutment portion, and an installation port connected to the probe outlet is provided on the lower side of the cover, and the abutment portion is located in the installation port.

[0008] Furthermore, abutment groove 1 is provided on the lower side of the plug, abutment groove 2 is provided on the upper end of the adjusting bolt, the upper and lower ends of the spring abut against abutment groove 1 and abutment groove 2 respectively, and the upper part of the adjusting bolt is inserted into the mounting opening.

[0009] Furthermore, the installation opening is a hexagonal hole, and the upper end of the adjusting bolt is a hexagonal shaft that matches the installation opening.

[0010] Furthermore, the first side surface is arranged opposite to the third side surface, the second side surface is arranged opposite to the fifth side surface, the fourth side surface is obtained by cutting off the intersection of the third side surface and the fifth side surface, and the air intake interface, the shut-off valve interface, the solenoid valve interface, the safety valve port, the manual discharge valve port, the manual discharge channel and the safety exhaust port are all opened perpendicular to the side surface of the upper valve block.

[0011] Furthermore, the manual discharge channel is opened at a bottom edge position of the manual discharge valve port, and the first communication channel is opened at a bottom middle position of the manual discharge valve port.

[0012] Furthermore, a pressure detection channel is provided on the first side, and the pressure detection channel is connected to the first channel. A temperature and pressure detection channel is provided on the upper side of the upper valve body, and the lower end of the temperature and pressure detection channel is connected to the lower side of the lower valve block. The temperature and pressure detection channel longitudinally passes through the upper valve body between the pressure detection channel, the first channel and the air inlet interface.

[0013] Furthermore, an outer upper portion of the plug-in valve body is provided with an outer sealing groove, an outer sealing member is installed in the outer sealing groove, and a thread is provided at a lower portion of the outer side of the plug-in valve body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention can automatically control the air inlet and outlet of the valve body by plugging in the solenoid valve, and can plug in the safety valve and the manual discharge valve for exhaust. The overall internal airway structure is reasonable, and it has the advantages of compact structure and high integration.

[0016] The present invention pushes the spring through the arranged adjusting bolt while compressing the air inside the plug-in valve body, thereby applying a pre-tightening force to the plug. At this time, the plug abuts against the internal channel of the valve body to play a shut-off sealing role. At the same time, the air pressure in the internal channel of the valve body is greater than the applied pre-tightening force, and the pressure in the internal channel can push the plug, thereby playing the role of a one-way valve. This structure is beneficial to the miniaturization of equipment. Compared with the existing plug-in shut-off valves, it has the advantages of a more compact structure and high sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the upper valve block and the lower valve block;

[0019] Figure 3 It is a cross-sectional view of the internal structure of the upper valve block and the lower valve block;

[0020] Figure 4 It is a bottom view of the present invention;

[0021] Figure 5It is a three-dimensional diagram of an adjustable stop valve;

[0022] Figure 6 It is a cross-sectional view of an adjustable stop valve.

[0023] In the figure: 1, upper valve block; 2, lower valve block; 3, first side; 4, second side; 5, third side; 6, fourth side; 7, fifth side; 8, air inlet interface; 9, first channel; 10, stop valve interface; 11, solenoid valve interface; 12, first gas transmission channel; 13, second gas transmission channel; 14, safety valve port; 15, safety channel; 16, manual discharge valve port; 17, manual discharge channel; 18, safety exhaust port; 19 , first connecting channel; 20, second connecting channel; 21, plug-in valve body; 22, adjusting bolt; 23, spring; 24, plug; 241, sealing head; 242, abutment portion; 25, probe port; 26, inner sealing groove; 27, inner sealing member; 28, adjusting screw hole; 29, installation port; 30, abutment groove one; 31, abutment groove two; 32, pressure detection channel; 33, outer sealing member; 34, cover; 35, temperature and pressure detection channel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 6As shown, a hydrogen storage bottle mouth valve which is easy to disassemble and assemble and has high airtightness comprises an upper valve block 1 and a lower valve block 2, wherein the lower valve block 2 is integrally connected to the lower side of the upper valve block 1, the lower valve block 2 is cylindrical, and the side of the upper valve block 1 comprises a first side 3, a second side 4, a third side 5, a fourth side 6 and a fifth side 7, an air inlet interface 8 is provided on the first side 3, a first channel 9 which is connected with the second side 4 and the fifth side 7, a stop valve interface 10 and a solenoid valve interface 11 are respectively provided at both ends of the first channel 9, the stop valve interface 10 is located on the second side 4, and the The solenoid valve interface 11 is located on the fifth side 7, the air inlet interface 8 is connected to the stop valve interface 10, the stop valve interface 10 and the solenoid valve interface 11 are respectively installed with a stop valve and a solenoid valve, the stop valve can cut off the inlet and outlet air by abutting and closing the first channel 9, the lower valve block 2 is provided with a first air delivery channel 12 whose upper end is connected to the solenoid valve interface 11, the lower valve block 2 is also provided with a second air delivery channel 13, the first air delivery channel 12 and the second air delivery channel 13 are both opened from the lower side of the lower valve block 2 to the interior of the upper valve block 1, the fourth side 6 is provided with a safety valve port 14, A safety valve is installed in the safety valve port 14, a safety passage 15 connected to the second gas delivery passage 13 is opened at the bottom of the safety valve port 14, a manual discharge valve port 16 is opened at the second side 4, a manual discharge valve port 16 is opened at the manual discharge valve port 16, and a manual discharge passage 17 connected to the safety passage 15 is opened, a safety exhaust port 18 is opened at the third side 5, and a first communication passage 19 and a second communication passage 20 connected to the manual discharge valve port 16 and the safety valve port 14 are opened at the bottom of the safety exhaust port 18, an adjustable stop valve is installed in the manual discharge valve port 16, and the adjustable stop valve The valve includes a plug-in valve body 21, the center of which is provided with an adjusting bolt 22 which can be screwed into the upper valve block 1, the middle part of the adjusting bolt 22 is sealed with the plug-in valve body 21, the upper part of the adjusting bolt 22 abuts with a spring 23, the upper part of the spring 23 abuts with a plug 24, the plug 24 is made of sealing materials such as rubber, and the elastic potential energy of the spring 23 fits with the inside of the plug-in valve body 21 to form a sealed state of the plug-in valve body 21, the upper end of the plug-in valve body 21 is provided with a probe port 25, the upper part of the plug 24 passes through the probe port 25 and abuts against the first connecting channel 19.

[0026] In this embodiment, a sealing cavity is provided inside the plug-in valve body 21, and the middle diameter of the adjusting bolt 22 matches the clearance of the sealing cavity. An inner sealing groove 26 is provided on the outer side of the middle part of the adjusting bolt 22, and an inner sealing member 27 is installed in the inner sealing groove 26. The inner sealing member 27 includes an inner sealing ring and an inner sealing gasket. An adjusting screw hole 28 connected to the sealing cavity is provided on the lower side of the plug-in valve body 21, and the lower part of the adjusting bolt 22 is threadedly connected to the adjusting screw hole 28. A hexagonal countersunk hole is provided on the lower side of the adjusting bolt 22, and the screwing-in of the adjusting bolt 22 is facilitated by the hexagonal countersunk hole.

[0027] In this embodiment, a sealing threaded hole is provided on the upper portion of the plug-in valve body 21, an external sealing thread is provided on the outer side of the cover 34, the cover 34 is threadedly connected to the plug-in valve body 21, the plug 24 is slidably connected in the cover 34, the probe outlet 25 is located at the upper portion of the cover 34, the plug 24 includes a sealing head 241 and an abutment portion 242, and an installation port 29 connected to the probe outlet 25 is provided on the lower side of the cover 34, the abutment portion 242 is located in the installation port 29, and the plug 24 can slide up and down in the installation port 29.

[0028] In this embodiment, abutment groove 1 30 is provided on the lower side of the plug 24, and abutment groove 2 31 is provided on the upper end of the adjusting bolt 22. The upper and lower ends of the spring 23 abut against abutment groove 1 30 and abutment groove 2 31 respectively, and the upper part of the adjusting bolt 22 is inserted into the mounting opening 29.

[0029] In this embodiment, the mounting port 29 is a hexagonal hole, and the upper end of the adjusting bolt 22 is a hexagonal shaft that matches the mounting port 29. The hexagonal hole is provided to facilitate the assembly of the adjustable stop valve. When the mounting port 29 is sleeved on the upper end of the adjusting bolt 22, when the lower end of the adjusting bolt 22 is screwed into the adjusting screw hole 28, the plug 24 is synchronously rotated and screwed into the upper end of the plug-in valve body 21.

[0030] In this embodiment, the first side surface 3 is arranged opposite to the third side surface 5, the second side surface 4 is arranged opposite to the fifth side surface 7, the fourth side surface 6 is obtained by cutting off the intersection of the third side surface 5 and the fifth side surface 7, and the air intake interface 8, the stop valve interface 10, the solenoid valve interface 11, the safety valve port 14, the manual discharge valve port 16, the manual discharge channel 17 and the safety exhaust port 18 are all opened perpendicular to the side of the upper valve block 1.

[0031] In this embodiment, the manual discharge channel 17 is opened at the bottom edge position of the manual discharge valve port 16, and the first connecting channel 19 is opened at the bottom middle position of the manual discharge valve port 16. The upper end of the abutment portion 242 is truncated cone-shaped, and the shape of the contact portion between the first connecting channel 19 and the abutment portion 242 matches the shape of the abutment portion 242.

[0032] In this embodiment, a pressure detection channel 32 is provided on the first side surface 3, and the pressure detection channel 32 is connected to the first channel 9. A temperature and pressure detection channel 35 is provided on the upper side surface of the upper valve body, and the lower end of the temperature and pressure detection channel 35 is connected to the lower side surface of the lower valve block 2. The temperature and pressure detection channel 35 longitudinally passes through the upper valve body between the pressure detection channel 32, the first channel 9 and the air inlet interface 8, and a temperature and pressure sensor is installed on the upper end of the temperature and pressure detection channel 35.

[0033] In this embodiment, an outer sealing groove is provided on the upper outer side of the plug-in valve body 21 , an outer sealing member 33 is installed in the outer sealing groove, and the outer sealing member 33 includes an outer sealing ring and an outer sealing gasket. A thread is provided on the lower outer side of the plug-in valve body 21 .

[0034] During installation, the present invention can be provided with a sealing ring on the periphery of the valve block and inserted into the mouth of the hydrogen bottle for sealing. The safety exhaust port 18 is in a normally closed state through the safety valve and the adjustable stop valve. The stop valve in the stop valve interface 10 can control the connection and closing of the first channel 9, and can also control the gas flow of the first channel 9. The gas enters the first channel 9 after passing through the air inlet interface 8, and enters the first gas transmission channel 12 through the solenoid valve to complete the intake. At the same time, hydrogen can enter the first channel 9 in the reverse direction through the first gas transmission channel 12 and discharge the hydrogen through the air inlet interface 8. The safety valve can A temperature or pressure monitoring valve is used. When the temperature or pressure is abnormal, the safety channel 15 is connected with the safety exhaust port 18 to realize the deflation operation. At the same time, by filling the safety exhaust port 18 with air and pressurizing it, the pressure in the first connecting channel 19 is increased, which can push the plug 24 of the adjustable stop valve to move downward, so that the safety exhaust port 18 is connected with the safety channel 15, and the operation of supplying gas to the hydrogen cylinder is realized. By screwing in and out the adjusting bolt 22, the pressure inside the plug valve body 21 and the preload force of the spring 23 are controlled, thereby realizing the pressure at which the plug 24 is adjusted to open.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness, characterized by: The invention comprises an upper valve block and a lower valve block which are integrally connected, the side surfaces of the upper valve block comprising a first side surface, a second side surface, a third side surface, a fourth side surface and a fifth side surface, an air inlet interface is provided on the first side surface, a first channel which is connected is provided on the second side surface and the fifth side surface, a stop valve interface and a solenoid valve interface are provided at both ends of the first channel respectively, the air inlet interface is connected to the stop valve interface, a stop valve and a solenoid valve are installed on the stop valve interface and the solenoid valve interface respectively, a first air transmission channel which is connected to the solenoid valve interface at the upper end is provided on the lower valve block, a second air transmission channel is also provided on the lower valve block, a safety valve port is provided on the fourth side surface, a safety valve is installed in the safety valve port, and a safety valve which is connected to the second air transmission channel is provided at the bottom of the safety valve port A full channel, a manual discharge valve port is provided on the second side, a manual discharge valve port is provided with a manual discharge channel connected to a safety channel, a safety exhaust port is provided on the third side, a first connecting channel and a second connecting channel respectively connected to the manual discharge valve port and the safety valve port are provided at the bottom of the safety exhaust port, an adjustable stop valve is installed in the manual discharge valve port, the adjustable stop valve comprises a plug-in valve body, an adjusting bolt which can be screwed into the upper valve block is provided at the center of the plug-in valve body, the middle part of the adjusting bolt is sealed with the plug-in valve body, the upper part of the adjusting bolt is abutted with a spring, the upper part of the spring is abutted with a plug, the upper end of the plug-in valve body is provided with a probe port, the upper part of the plug passes through the probe port and abuts against the first connecting channel.

2. The hydrogen storage bottle mouth valve which is easy to disassemble and assemble and has high airtightness according to claim 1 is characterized in that: A sealing cavity is provided inside the plug-in valve body, the middle diameter of the adjusting bolt matches the clearance of the sealing cavity, an inner sealing groove is provided on the outer side of the middle part of the adjusting bolt, a sealing member is installed in the inner sealing groove, an adjusting screw hole connected to the sealing cavity is provided on the lower side of the plug-in valve body, and the lower part of the adjusting bolt is threadedly connected to the adjusting screw hole.

3. The hydrogen storage bottle mouth valve which is easy to disassemble and has high airtightness according to claim 2 is characterized in that: The upper part of the plug valve body is connected with a cover, the plug is slidably connected in the cover, the probe outlet is located at the upper part of the cover, the plug includes a sealing head and an abutment part, the lower side of the cover is provided with an installation port connected to the probe outlet, and the abutment part is located in the installation port.

4. The hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness according to claim 3 is characterized in that: The lower side of the plug is provided with abutment groove 1, the upper end of the adjusting bolt is provided with abutment groove 2, the upper and lower ends of the spring are respectively abutted in abutment groove 1 and abutment groove 2, and the upper part of the adjusting bolt is inserted into the installation opening.

5. The hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness according to claim 4 is characterized in that: The installation opening is a hexagonal hole, and the upper end of the adjusting bolt is a hexagonal shaft matched with the installation opening.

6. The hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness according to claim 1 is characterized in that: The first side surface is arranged opposite to the third side surface, the second side surface is arranged opposite to the fifth side surface, and the fourth side surface is obtained by cutting off the intersection of the third side surface and the fifth side surface. The air intake interface, the shut-off valve interface, the solenoid valve interface, the safety valve port, the manual discharge valve port, the manual discharge channel and the safety exhaust port are all opened perpendicular to the side surface of the upper valve block.

7. The hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness according to claim 1 is characterized in that: The manual discharge passage is opened at the bottom edge of the manual discharge valve port, and the first communication passage is opened at the bottom middle of the manual discharge valve port.

8. The hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness according to claim 1 is characterized in that: A pressure detection channel is provided on the first side, and the pressure detection channel is connected to the first channel. A temperature and pressure detection channel is provided on the upper side of the upper valve body, and the lower end of the temperature and pressure detection channel is connected to the lower side of the lower valve block. The temperature and pressure detection channel longitudinally passes through the upper valve body between the pressure detection channel, the first channel and the air inlet interface.

9. The hydrogen storage bottle mouth valve that is easy to disassemble and assemble and has high airtightness according to claim 1 is characterized in that: An outer sealing groove is provided on the upper outer side of the plug-in valve body, an outer sealing member is installed in the outer sealing groove, and a thread is provided on the lower outer side of the plug-in valve body.

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