A hydrogen ball valve with automatic compensation sealing function

Abstract

The present invention relates to the technical field of hydrogen ball valves, and in particular to a hydrogen ball valve with an automatic compensation sealing function, comprising a valve body, a valve cavity is provided inside the valve body, a ball core is provided inside the valve cavity, the middle peripheral wall of the ball core is slidably connected to the middle inner surface of the valve cavity, connecting pieces are provided at both ends of the valve body, a flange pipe is fixed at one end of the connecting piece, connecting bolts are inserted at the four corners of the outer wall of the connecting piece, both ends of the valve body are threadedly connected to the connecting bolts through threaded holes, a pressure monitor body is installed on the bottom surface of the valve body, and the pressure monitor body is connected to the valve cavity. The valve seat is compensated by the first compensation component and the second compensation component, so that the sealing gasket on the valve seat abuts against the ball core for sealing, thereby preventing hydrogen leakage, improving the safety and reliability of the equipment, ensuring the long-term stable operation of the hydrogen delivery system, and ensuring the stable operation of the valve under different working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen ball valves, in particular to a hydrogen ball valve with an automatic compensation sealing function. Background Art

[0002] The hydrogen ball valve is a specially designed ball valve designed for handling high-pressure, highly corrosive or special working fluids such as hydrogen. This ball valve maintains the advantages of traditional ball valves and adds an automatic compensation sealing function to ensure that it can still maintain efficient sealing performance under complex working conditions. When the sealing performance of the valve sealing surface decreases due to wear, medium pressure fluctuations or temperature changes, it can automatically adjust and compensate to maintain a good sealing effect;

[0003] After searching, a Chinese patent with announcement number CN218177979U provides a high-pressure hydrogen ball valve. The chromium layer of the high-pressure hydrogen ball valve can reduce the amount of hydrogen entering the ball core, thereby reducing the possibility of hydrogen embrittlement. In addition, under the protection of the chromium layer, the ball core has higher strength, making it suitable for high-pressure environments. At the same time, the design of the first sealing component and the second sealing component is combined to ensure the sealing of the main valve body during use, meeting the user's usage needs.

[0004] However, it was found during use that the position of the sealing component of the hydrogen ball valve of the device was relatively fixed. As the use time increased, the contact surface between the sealing gasket and the ball or valve seat would gradually wear due to friction, thereby creating a gap. The gap would directly affect the sealing effect of the valve and increase the risk of hydrogen leakage. Some ball valves use elastic parts such as disc springs for automatic compensation, but these elastic parts will gradually lose their elastic potential energy during long-term use, which can easily lead to a weakened compensation effect, reducing the sealing performance and stability, and is not conducive to the automatic compensation of the hydrogen ball valve. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a hydrogen ball valve with an automatic compensating sealing function, which improves its sealing performance and stability and is beneficial to the automatic compensating sealing of the hydrogen ball valve.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a hydrogen ball valve with automatic compensation sealing function, comprising a valve body, a valve cavity is opened inside the valve body, a ball core is arranged inside the valve cavity, the middle outer peripheral wall of the ball core is slidably connected with the middle inner surface of the valve cavity, connecting pieces are arranged at both ends of the valve body, a flange pipe is fixedly arranged at one end of the connecting piece, connecting bolts are inserted at the four corners of the outer wall of the connecting piece, both ends of the valve body are threadedly connected with the connecting bolts through threaded holes, a pressure monitor body is installed on the bottom surface of the valve body, the pressure monitor body is connected with the valve cavity, two valve seats are contacted at the two ends of the outer peripheral wall of the valve body, a sealing gasket is fixedly arranged on the inner wall of the valve seat, the inner wall of the sealing gasket is rotatably connected with the outer wall of the ball core, a first compensation component is arranged on the valve seat, and an elastic sealing ring is arranged on the first compensation component;

[0007] A second compensation component is provided at the outer end of the valve seat, and a sliding ring is provided on the second compensation component, and the sliding ring is fixed on the valve seat. Two pressure grooves are provided in a symmetrical structure inside the valve body, and the sliding ring is slidably connected to the pressure grooves. The first compensation component and the second compensation component are respectively symmetrically provided with two, and a valve stem is fixed on the top surface of the ball core, and the valve stem is rotatably connected to the valve body. A driving component is provided on the top surface of the valve body, and a forward and reverse motor is provided on the driving component. Two conveying grooves are provided on the top surface of the valve body, and the conveying grooves are communicated with the pressure grooves.

[0008] Preferably, the first compensation component includes a spring, and the spring is provided with a plurality of springs in an annular array structure, the valve seat and the valve body form a spring accommodating chamber for accommodating the spring, one end of the spring is fixedly connected to the valve seat, and the other end of the spring is fixedly connected to the inner wall of the valve body, the outer peripheral wall of the valve seat close to the ball core is gap-matched with the inner wall of the valve body, the middle outer peripheral wall of the valve seat is slidably connected with a push ring, the outer peripheral wall of the push ring is slidably connected to the inner wall of the valve body, and the inner wall of the push ring is fixedly connected to the outer peripheral wall of the elastic sealing ring; an elastic sealing ring accommodating chamber for accommodating the elastic sealing ring is formed between the push ring, the valve body and the valve seat, and the elastic sealing ring accommodating chamber, the spring accommodating chamber and the gap are connected.

[0009] Through the above technical solution, the elastic potential energy of the spring pushes the valve seat to move synchronously, so that the sealing gasket abuts against the ball core.

[0010] Preferably, the valve body is symmetrically structured with two elastic sleeves, the outer side walls of the elastic sleeves are fixedly connected to the valve body, and the outer peripheral wall of the push ring is slidably connected to the elastic sleeves.

[0011] Through the above technical solution, the hydrogen inside the valve cavity enters the inner area of ​​the spring through the gap between the outer peripheral wall of the valve seat and the valve body, pushing the elastic sealing ring to move toward the outer end, causing the elastic sealing ring to squeeze the push ring and move synchronously outward, causing the push ring to squeeze the elastic sleeve, thereby increasing the pressure in the gap between the outer shaft wall in the middle of the valve seat and the valve body. At this time, the increased pressure pushes the valve seat to move toward one side of the ball core.

[0012] Preferably, the second compensation component includes a sealing strip, two of which are provided, and a plurality of grooves are provided on the sliding ring. The sealing strip is snap-fitted with the grooves on the inner wall of the sliding ring, and the inner wall of the sealing strip is slidably connected to the wall of the pressure groove. A first sealing ring is snap-fitted inside the groove on the outer wall of the sliding ring, and the outer peripheral wall of the first sealing ring is slidably connected to the wall of the pressure groove.

[0013] Through the above technical solution, the pressure inside the pressure groove pushes the sliding ring to move along the pressure groove toward the ball core, and the sliding ring pushes the valve seat to move synchronously, so that the valve seat drives the inner wall of the sealing gasket to abut against the outer wall of the ball core.

[0014] Preferably, a limiting ring is sleeved on the lower end of the valve stem, and a plurality of second sealing rings are sleeved on the outer peripheral wall of the lower end of the valve stem. The limiting ring and the second sealing ring are rotatably connected to the upper end of the valve body respectively. A plurality of positioning grooves are opened on the outer peripheral wall of the upper end of the valve stem. A first electric push rod is installed on the top surface of the valve body through a mounting seat. A clamping block is fixedly connected to the piston rod of the first electric push rod, and the clamping block is engaged with the positioning groove. A fixed block is slidably connected to the piston rod of the first electric push rod. The fixed block is fixed on the top surface of the valve body. A sliding rod is slidably connected to the fixed block, and one end of the sliding rod is fixedly connected to the side wall of the clamping block.

[0015] Through the above technical solution, the piston rod of the first electric push rod drives the clamping block to move, which facilitates the clamping and separation of the clamping block and the positioning groove, and facilitates the positioning and fixation of the valve stem and the ball core.

[0016] Preferably, the valve body is connected with a delivery pipe, both ends of the delivery pipe are connected with a delivery groove, and two electric control valves are installed on the delivery pipe in a symmetrical structure.

[0017] Through the above technical solution, after the electric control valve is opened, the pressurized gas is transported to the inside of the conveying tank through the conveying pipe and then enters the inside of the pressure tank. During continuous delivery, the pressure inside the pressure tank increases.

[0018] Preferably, the driving assembly includes a blower, the air outlet end of the blower is connected to the delivery pipe, a bracket is fixedly provided on the top surface of the valve body, the blower is installed on the outer wall of the bracket through a mounting seat, and a support block is fixedly provided on the top surface of the bracket.

[0019] Preferably, two guide rails are fixed on the support block, a moving block is slidably connected to the side wall of the support block, the moving block is engaged with the guide rails, the moving block is slidably connected to the guide rails, a second electric push rod is installed on the support block through a mounting seat, and a piston rod of the second electric push rod is fixedly connected to the side wall of the moving block.

[0020] Through the above technical solution, the piston rod of the second electric push rod pushes the moving block to slide along the guide rail, and the moving block drives the forward and reverse motors to move synchronously.

[0021] Preferably, the forward and reverse motor is mounted on the moving block via a mounting seat, a first gear is sleeved on the output shaft of the forward and reverse motor, and a second gear is sleeved on the main shaft of the blower.

[0022] Through the above technical solution, the output shaft of the forward and reverse motor drives the first gear to engage with the second gear. The output shaft of the forward and reverse motor drives the first gear to rotate and engage and transmit to the second gear to rotate synchronously. The rotation of the second gear causes the main shaft of the blower to rotate, and the pressurized gas is sucked in and delivered to the inside of the delivery pipe.

[0023] Preferably, a third gear is sleeved on the outer peripheral wall of the upper end of the valve stem, the second gear and the third gear are in the same horizontal plane, and the first gear is meshed and connected with the second gear and the third gear respectively.

[0024] Through the above technical solution, the output shaft of the forward and reverse motor drives the first gear to engage with the third gear, so that the output shaft of the forward and reverse motor drives the first gear to rotate and engage and transmit to the third gear to rotate synchronously, and the rotating third gear drives the valve stem to rotate along the valve body.

[0025] Beneficial effects of the present invention:

[0026] In the present invention, the flange pipe and the connecting piece are installed on the valve body by connecting bolts, and the valve body is installed at a suitable use position for hydrogen transportation by the flange pipe. During use, the pressure inside the valve cavity is monitored by the pressure monitor body. When the pressure inside the valve cavity is too high, the valve seat is compensated by the first compensation component and the second compensation component, so that the sealing gasket on the valve seat abuts against the ball core for sealing, thereby preventing hydrogen leakage, improving the safety and reliability of the equipment, and ensuring the long-term stable operation of the hydrogen transportation system.

[0027] When the closure is closed, the spring will release the pressure, and the closure will release the pressure, which will in turn cause the closure to close and the valve body to close.

[0028] In the present invention, when it is necessary to push the sealing gasket to move in the direction of the ball core for automatic compensation, the driving component delivers pressurized gas to the delivery pipe. At this time, after the electric control valve is opened, the pressurized gas is delivered to the inside of the delivery groove through the delivery pipe and then enters the inside of the pressure groove. During continuous delivery, the pressure inside the pressure groove increases. At this time, the pressure inside the pressure groove drives the sliding ring to move along the pressure groove toward the direction of the ball core. During the movement, the sealing strip and the first sealing ring are driven to move synchronously through the slot. The sealing strip and the first sealing ring slide with the wall of the pressure groove, and the sliding ring drives the valve seat to move synchronously, so that the valve seat drives the inner wall of the sealing gasket to abut against the outer wall of the ball core, which effectively prevents leakage of the medium, enhances the sealing effect, ensures the sealing performance of the valve body, reduces the impact of pressure fluctuations or changes in medium properties, and ensures the stable operation of the valve under different working conditions.

[0029] In the present invention, the driving assembly drives the valve stem to rotate along the valve body, the valve stem drives the limit ring and the second sealing ring to move synchronously, and the valve stem drives the ball core to rotate synchronously while rotating, so as to facilitate the control of the opening and closing of the valve body. Before the valve stem rotates, the piston rod of the first electric push rod drives the clamping block to move outward, and the piston rod and the sliding rod of the first electric push rod both slide along the fixed block to separate the clamping block from the positioning groove. After separation, the valve stem is rotated to a suitable angle, and the first electric push rod returns to its initial position to clamp the clamping block with the positioning groove, so as to facilitate the fixation of the valve stem and the ball core, simplify the opening and closing operation, improve the control efficiency, make the opening and closing of the valve body more convenient, and facilitate the precise positioning and fixation of the valve stem and the ball core.

[0030] In the present invention, the piston rod of the second electric push rod pushes the moving block to slide along the guide rail, and the moving block drives the forward and reverse motors to move synchronously, so that the output shaft of the forward and reverse motors drives the first gear to engage with the second gear, and the output shaft of the forward and reverse motors drives the first gear to rotate and engage and transmit to the second gear to rotate synchronously, and the main shaft of the blower rotates through the rotation of the second gear, and the pressurized gas is sucked and delivered to the inside of the delivery pipe. The delivery pipe facilitates the delivery of the pressurized gas to the inside of the pressure tank through the delivery groove, so that the pressure inside the pressure tank is increased, and the sliding ring and the valve seat are pushed to move in the direction of the ball core, thereby realizing efficient suction and delivery of air and facilitating flexible adjustment of the internal pressure of the pressure tank; when the pressure of the pressure tank needs to be released, the air inside the pressure tank flows back to the inside of the blower after the electric control valve is opened and then dispersed, which facilitates the adjustment of the internal pressure of the pressure tank.

[0031] In the present invention, the piston rod of the second electric push rod pushes the moving block to slide along the guide rail, and the moving block drives the forward and reverse motors to move synchronously, so that the output shaft of the forward and reverse motors drives the first gear to engage with the third gear, so that the output shaft of the forward and reverse motors drives the first gear to rotate and engage and transmit to the third gear for synchronous rotation, and the rotating third gear drives the valve stem to rotate along the valve body, so that the rotating valve stem drives the ball core to rotate, providing power conditions for opening and closing the valve body, realizing precise control of the valve stem rotation angle and speed, ensuring the accuracy and reliability of the opening and closing of the valve body, improving the opening and closing efficiency of the valve, and facilitating the rotation of the valve stem and the blower through the forward and reverse motors, thereby reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a bottom perspective view of the valve body structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the internal structure of the valve body of the present invention;

[0035] Figure 4 It is an enlarged schematic diagram of the structure at A of the present invention;

[0036] Figure 5 It is a schematic structural diagram of the first compensation component of the present invention;

[0037] Figure 6 It is a schematic diagram of the assembly of the elastic sleeve structure of the present invention;

[0038] Figure 7 is a schematic structural diagram of a second compensation component of the present invention;

[0039] Figure 8 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0040] Fig. 9 It is a rear view of the blower structure of the present invention;

[0041] Fig.10 It is a left view of the card block structure of the present invention.

[0042] In the figure: 1. valve body; 2. valve cavity; 3. ball core; 4. connector; 5. flange pipe; 6. connecting bolt; 7. pressure monitor body; 8. valve seat; 9. first compensation component; 901. elastic sealing ring; 902. spring; 903. push ring; 904. elastic sleeve; 10. second compensation component; 1001. sliding ring; 1002. sealing strip; 1003. slot; 1004. first sealing ring; 11. valve stem; 12. drive component; 1201. forward and reverse motor; 120 2. Blower; 1203. Bracket; 1204. Support block; 1205. Guide rail; 1206. Moving block; 1207. Second electric push rod; 1208. First gear; 1209. Second gear; 1210. Third gear; 13. Delivery pipe; 14. Delivery trough; 15. Pressure trough; 16. Sealing pad; 17. Limiting ring; 18. Positioning groove; 19. First electric push rod; 20. Block; 21. Fixed block; 22. Sliding rod; 23. Electric control valve; 24. Second sealing ring. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] Embodiment 1: Figures 1 to 6 As shown, this embodiment provides a hydrogen ball valve with automatic compensation sealing function, including a valve body 1, a valve cavity 2 is opened inside the valve body 1, a ball core 3 is arranged inside the valve cavity 2, the middle outer peripheral wall of the ball core 3 is slidably connected to the middle inner surface of the valve cavity 2, connecting pieces 4 are arranged at both ends of the valve body 1, a flange pipe 5 is fixedly arranged at one end of the connecting piece 4, connecting bolts 6 are inserted at the four corners of the outer wall of the connecting piece 4, both ends of the valve body 1 are threadedly connected with the connecting bolts 6 through threaded holes, a pressure monitor body 7 is installed on the bottom surface of the valve body 1, the pressure monitor body 7 is connected to the valve cavity 2, two valve seats 8 are contacted at both ends of the outer peripheral wall of the valve body 1, a sealing gasket 16 is fixedly arranged on the inner wall of the valve seat 8, the inner wall of the sealing gasket 16 is rotatably connected to the outer wall of the ball core 3, a first compensation component 9 is arranged on the valve seat 8, and an elastic sealing ring 901 is arranged on the first compensation component 9;

[0045] A second compensation component 10 is provided at the outer end of the valve seat 8, and a sliding ring 1001 is provided on the second compensation component 10. The sliding ring 1001 is fixedly mounted on the valve seat 8. Two pressure grooves 15 are provided inside the valve body 1 in a symmetrical structure. The sliding ring 1001 is slidably connected to the pressure groove 15. The first compensation component 9 and the second compensation component 10 are respectively symmetrically provided with two. A valve stem 11 is fixedly mounted on the top surface of the ball core 3. The valve stem 11 is rotatably connected to the valve body 1. A driving component 12 is provided on the top surface of the valve body 1. A forward and reverse motor 1201 is provided on the driving component 12. Two conveying grooves 14 are provided on the top surface of the valve body 1, and the conveying groove 14 is communicated with the pressure groove 15.

[0046] The first compensation component 9 includes a spring 902, and a plurality of springs 902 are provided in an annular array structure. The valve seat 8 and the valve body 1 form a spring accommodating chamber for accommodating the spring 902. One end of the spring 902 is connected to the valve seat 8, and the other end of the spring 902 is connected to the inner wall of the valve body 1. There is a gap between the outer peripheral wall of the valve seat 8 close to the ball core 3 and the inner wall of the valve body 1. A push ring 903 is slidably connected to the outer peripheral wall of the middle part of the valve seat 8. The outer peripheral wall of the push ring 903 is slidably connected to the inner wall of the valve body 1, and the inner wall of the push ring 903 is connected to the outer peripheral wall of the elastic sealing ring 901. An elastic sealing ring accommodating chamber for accommodating the elastic sealing ring 901 is formed between the push ring 903, the valve body 1 and the valve seat 8, and the elastic sealing ring accommodating chamber, the spring accommodating chamber and the gap are connected; the elastic potential energy of the spring 902 pushes the valve seat 8 to move synchronously, so that the sealing gasket 16 abuts against the ball core 3.

[0047] The interior of the valve body 1 is symmetrically structured and provided with two elastic sleeves 904, the outer wall of the elastic sleeve 904 is fixedly connected to the valve body 1, and the outer peripheral wall of the push ring 903 is slidably connected to the elastic sleeve 904; the hydrogen inside the valve cavity 2 enters the area inside the spring 902 (i.e., the spring accommodating chamber) through the gap between the outer peripheral wall of the valve seat 8 and the valve body 1, and then enters the area accommodating the elastic sealing ring 901 (i.e., the elastic sealing ring accommodating chamber), thereby pushing the elastic sealing ring 901 to move toward the outer end, so that the elastic sealing ring 901 squeezes the push ring 903 and moves outward synchronously, so that the push ring 903 squeezes the elastic sleeve 904, and the pressure in the gap between the outer shaft wall in the middle of the valve seat 8 and the valve body 1 increases. At this time, the increased pressure reacts to the valve seat 8 toward one side of the ball core 3 to make the sealing gasket 16 on the valve seat 8 press against the ball core 3.

[0048] When in use, the flange pipe 5 and the connector 4 are installed on the valve body 1 through the connecting bolts 6, and the valve body 1 is installed at a suitable position for hydrogen transportation through the flange pipe 5. During use, the pressure inside the valve cavity 2 is monitored by the pressure monitor body 7. When the pressure inside the valve cavity 2 is too high, the valve seat 8 is compensated by the first compensation component 9 and the second compensation component 10, so that the sealing gasket 16 on the valve seat 8 abuts against the ball core 3 for sealing, thereby preventing hydrogen leakage, improving the safety and reliability of the equipment, and ensuring the long-term stable operation of the hydrogen transportation system;

[0049] When the pressure inside the valve cavity 2 increases, the hydrogen inside the valve cavity 2 enters the area inside the spring 902 through the gap between the outer peripheral wall of the valve seat 8 and the valve body 1, pushing the elastic sealing ring 901 to move outward, so that the elastic sealing ring 901 squeezes the push ring 903 and moves outward synchronously, so that the push ring 903 squeezes the elastic sleeve 904, so that the pressure in the gap between the outer shaft wall in the middle of the valve seat 8 and the valve body 1 increases. At this time, the increased pressure reacts to the valve seat 8 toward one side of the ball core 3. At the same time, the elastic potential energy of the spring 902 pushes the valve seat 8 to move synchronously, so that the sealing gasket 16 abuts against the ball core 3, reducing the influence of the increase of the internal hydrogen pressure of the valve cavity 2 on the sealing gasket 16 when the ball core 3 is closed, improving the sealing effect, reducing the direct impact and wear of the high pressure on the sealing gasket 16, extending the service life of the sealing gasket 16, and improving the reliability and durability of the entire valve;

[0050] When the pressure in the gap between the outer wall of the valve seat 8 and the valve body 1 decreases, the push ring 903 and the elastic sealing ring 901 return to their initial positions, which facilitates the use of automatic compensating seals when the pressure in the valve chamber 2 increases, prepares for the automatic compensating seals when the pressure increases next time, and improves the response speed and adaptability of the valve.

[0051] Embodiment 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown, this embodiment is based on the previous embodiment, and is different from the previous embodiment in that the second compensation component 10 includes a sealing strip 1002, two sealing strips 1002 are provided, a plurality of grooves 1003 are provided on the sliding ring 1001, the sealing strip 1002 is snap-fitted with the groove 1003 on the inner wall of the sliding ring 1001, the inner wall of the sealing strip 1002 is slidably connected with the groove wall of the pressure groove 15, a first sealing ring 1004 is snap-fitted inside the groove 1003 on the outer wall of the sliding ring 1001, and the outer peripheral wall of the first sealing ring 1004 is slidably connected with the groove wall of the pressure groove 15; the pressure inside the pressure groove 15 pushes the sliding ring 1001 to move along the pressure groove 15 toward the direction of the ball core 3, and the sliding ring 1001 pushes the valve seat 8 to move synchronously, so that the valve seat 8 drives the inner wall of the sealing gasket 16 to abut against the outer wall of the ball core 3.

[0052] The valve body 1 is connected to a delivery pipe 13, both ends of which are connected to a delivery groove 14, and two electrically controlled valves 23 are symmetrically installed on the delivery pipe 13; after the electrically controlled valve 23 is opened, the external pressure air is pumped into the delivery pipe 13 and delivered to the inside of the delivery groove 14 and then enters the inside of the pressure groove 15. During continuous delivery, the internal pressure of the pressure groove 15 increases.

[0053] During use, when it is necessary to push the sealing gasket 16 to move toward the direction of the ball core 3 for automatic compensation, the driving component 12 delivers pressurized gas to the delivery pipe 13. At this time, after the electric control valve 23 is opened, the pressurized gas is delivered to the inside of the delivery groove 14 through the delivery pipe 13 and then enters the inside of the pressure groove 15. During continuous delivery, the pressure inside the pressure groove 15 increases. At this time, the pressure inside the pressure groove 15 drives the sliding ring 1001 to move along the pressure groove 15 toward the direction of the ball core 3. During the movement, the sealing strip 1002 and the first sealing ring 1004 are driven to move synchronously through the slot 1003. The sealing strip 1002 and the first sealing ring 1004 slide with the groove wall of the pressure groove 15, and the sliding ring 1001 drives the valve seat 8 to move synchronously, so that the valve seat 8 drives the inner wall of the sealing gasket 16 to abut against the outer wall of the ball core 3, effectively preventing medium leakage, enhancing the sealing effect, ensuring the sealing performance of the valve body 1, reducing the impact of pressure fluctuations or changes in medium properties, and ensuring the stable operation of the valve under different working conditions.

[0054] Embodiment 3: Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig.10 As shown, this embodiment is based on the previous embodiment, and is different from the previous embodiment in that a limiting ring 17 is sleeved on the lower end of the valve stem 11, and a plurality of second sealing rings 24 are sleeved on the outer peripheral wall of the lower end of the valve stem 11. The limiting ring 17 and the second sealing ring 24 are respectively rotatably connected to the upper end of the valve body 1, and a plurality of positioning grooves 18 are opened on the outer peripheral wall of the upper end of the valve stem 11. A first electric push rod 19 is installed on the top surface of the valve body 1 through a mounting seat, and a clamping block 20 is fixedly connected to the piston rod of the first electric push rod 19, and the clamping block 20 is engaged with the positioning groove 18. The piston rod of the first electric push rod 19 is slidably connected with a fixed block 21, and the fixed block 21 is fixedly arranged on the top surface of the valve body 1. A sliding rod 22 is slidably connected to the fixed block 21, and one end of the sliding rod 22 is fixedly connected to the side wall of the clamping block 20; the piston rod of the first electric push rod 19 drives the clamping block 20 to move, which facilitates the clamping and separation of the clamping block 20 and the positioning groove 18, and facilitates the positioning and fixing of the valve stem 11 and the ball core 3.

[0055] When the valve body 1 is in the process of opening and closing, the valve stem 11 is driven by the driving assembly 12 to rotate along the valve body 1, and the valve stem 11 drives the limit ring 17 and the second sealing ring 24 to move synchronously. The valve stem 11 drives the ball core 3 to rotate synchronously while rotating, so as to conveniently control the opening and closing of the valve body 1. Before rotating, the valve stem 11 drives the block 20 to move outward through the piston rod of the first electric push rod 19, and the piston rod and the sliding rod 22 of the first electric push rod 19 both slide along the fixed block 21 to separate the block 20 from the positioning groove 18. After separation, after the valve stem 11 is rotated to a suitable angle, the first electric push rod 19 returns to its initial position, so that the block 20 is engaged with the positioning groove 18, so as to facilitate the fixing of the valve stem 11 and the ball core 3, simplify the opening and closing operation, improve the control efficiency, make the opening and closing of the valve body 1 more convenient, and facilitate the precise positioning and fixing of the valve stem 11 and the ball core 3.

[0056] Embodiment 4: Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10 As shown, this embodiment is based on the previous embodiment, and is different from the previous embodiment in that the driving assembly 12 includes a blower 1202, the air outlet end of the blower 1202 is connected to the delivery pipe 13, a bracket 1203 is fixedly provided on the top surface of the valve body 1, the blower 1202 is installed on the outer wall of the bracket 1203 through a mounting seat, a support block 1204 is fixedly provided on the top surface of the bracket 1203, two guide rails 1205 are fixedly provided on the support block 1204, and a side wall of the support block 1204 is slidably connected to The moving block 1206 is snap-fitted with the guide rail 1205, and the moving block 1206 is slidably connected to the guide rail 1205. A second electric push rod 1207 is installed on the support block 1204 through a mounting seat, and the piston rod of the second electric push rod 1207 is fixedly connected to the side wall of the moving block 1206; the piston rod of the second electric push rod 1207 pushes the moving block 1206 to slide along the guide rail 1205, and the moving block 1206 drives the forward and reverse motor 1201 to move synchronously.

[0057] The forward and reverse motor 1201 is installed on the moving block 1206 through a mounting seat, and a first gear 1208 is sleeved on the output shaft of the forward and reverse motor 1201, and a second gear 1209 is sleeved on the main shaft of the blower 1202; the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to engage with the second gear 1209, and the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to rotate and engage and transmit to the second gear 1209 for synchronous rotation, and the main shaft of the blower 1202 rotates through the rotation of the second gear 1209, so that the pressurized gas is sucked in and delivered to the inside of the delivery pipe 13.

[0058] A third gear 1210 is sleeved on the outer peripheral wall of the upper end of the valve stem 11, the second gear 1209 and the third gear 1210 are in the same horizontal plane, and the first gear 1208 is meshed and connected with the second gear 1209 and the third gear 1210 respectively; the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to mesh with the third gear 1210, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to rotate and meshes and transmits to the third gear 1210 for synchronous rotation, and the rotating third gear 1210 drives the valve stem 11 to rotate along the valve body 1.

[0059] When the driving assembly 12 is used to pressurize the pressure tank 15, the piston rod of the second electric push rod 1207 pushes the moving block 1206 to slide along the guide rail 1205, and the moving block 1206 drives the forward and reverse motor 1201 to move synchronously, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to engage with the second gear 1209, and the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to rotate and engage and transmit to the second gear 1209 to rotate synchronously, and the main shaft of the blower 1202 rotates through the rotation of the second gear 1209, and the pressure gas is sucked and delivered to the inside of the delivery pipe 13. The delivery pipe 13 facilitates the delivery of the pressure gas to the inside of the pressure tank 15 through the delivery groove 14, so that the pressure inside the pressure tank 15 is increased, and the sliding ring 1001 and the valve seat 8 are pushed to move in the direction of the ball core 3, so that the efficient suction and delivery of air is realized, and the flexible adjustment of the internal pressure of the pressure tank 15 is convenient;

[0060] When the pressure of the pressure tank 15 needs to be released, the electric control valve 23 is opened and the air inside the pressure tank 15 flows back to the inside of the blower 1202 and then dispersed, which facilitates the adjustment of the pressure inside the pressure tank 15;

[0061] When the driving assembly 12 is used to drive the valve stem 11, the piston rod of the second electric push rod 1207 pushes the moving block 1206 to slide along the guide rail 1205, and the moving block 1206 drives the forward and reverse motor 1201 to move synchronously, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to engage with the third gear 1210, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to rotate and engage and transmit to the third gear 1210 to rotate synchronously, and the rotating third gear 1210 drives the valve stem 11 to rotate along the valve body 1, so that the rotating valve stem 11 drives the ball core 3 to rotate, providing power conditions for the opening and closing of the valve body 1, realizing precise control of the rotation angle and speed of the valve stem 11, ensuring the accuracy and reliability of the opening and closing of the valve body 1, and improving the opening and closing efficiency of the valve, and facilitating the rotation of the valve stem 11 and the blower 1202 through the forward and reverse motor 1201, thereby reducing the cost of use.

[0062] Working principle:

[0063] When in use, the flange pipe 5 and the connector 4 are installed on the valve body 1 through the connecting bolts 6, and the valve body 1 is installed at a suitable position for hydrogen transportation through the flange pipe 5. During use, the pressure inside the valve cavity 2 is monitored by the pressure monitor body 7. When the pressure inside the valve cavity 2 is too high, the valve seat 8 is compensated by the first compensation component 9 and the second compensation component 10, so that the sealing gasket 16 on the valve seat 8 abuts against the ball core 3 for sealing, thereby preventing hydrogen leakage, improving the safety and reliability of the equipment, and ensuring the long-term stable operation of the hydrogen transportation system;

[0064] When the pressure inside the valve cavity 2 increases, the hydrogen inside the valve cavity 2 enters the area inside the spring 902 through the gap between the outer peripheral wall of the valve seat 8 and the valve body 1, pushing the elastic sealing ring 901 to move outward, so that the elastic sealing ring 901 squeezes the push ring 903 and moves outward synchronously, so that the push ring 903 squeezes the elastic sleeve 904, so that the pressure in the gap between the outer shaft wall in the middle of the valve seat 8 and the valve body 1 increases. At this time, the increased pressure reacts to the valve seat 8 toward one side of the ball core 3. At the same time, the elastic potential energy of the spring 902 pushes the valve seat 8 to move synchronously, so that the sealing gasket 16 abuts against the ball core 3, reducing the influence of the increase of the internal hydrogen pressure of the valve cavity 2 on the sealing gasket 16 when the ball core 3 is closed, improving the sealing effect, reducing the direct impact and wear of the high pressure on the sealing gasket 16, extending the service life of the sealing gasket 16, and improving the reliability and durability of the entire valve;

[0065] When the pressure in the gap between the outer wall of the valve seat 8 and the valve body 1 decreases, the push ring 903 and the elastic sealing ring 901 return to their initial positions, which facilitates the use of the automatic compensation seal when the pressure in the valve cavity 2 increases, and prepares for the automatic compensation seal when the pressure increases next time, thereby improving the response speed and adaptability of the valve;

[0066] During use, when it is necessary to push the sealing gasket 16 to move toward the direction of the ball core 3 for automatic compensation, the driving component 12 delivers pressurized gas to the delivery pipe 13. At this time, after the electric control valve 23 is opened, the pressurized gas is delivered to the inside of the delivery groove 14 through the delivery pipe 13 and then enters the inside of the pressure groove 15. During continuous delivery, the pressure inside the pressure groove 15 increases. At this time, the pressure inside the pressure groove 15 drives the sliding ring 1001 to move along the pressure groove 15 toward the direction of the ball core 3. During the movement, the sealing strip 1002 and the first sealing ring 1004 are driven to move synchronously through the card groove 1003. The sealing strip 1002 and the first sealing ring 1004 slide with the groove wall of the pressure groove 15. The sliding ring 1001 drives the valve seat 8 to move synchronously, so that the valve seat 8 drives the inner wall of the sealing gasket 16 to abut against the outer wall of the ball core 3, effectively preventing leakage of the medium, enhancing the sealing effect, ensuring the sealing performance of the valve body 1, reducing the impact of pressure fluctuations or changes in medium properties, and ensuring the stable operation of the valve under different working conditions;

[0067] When the valve body 1 is in the process of opening and closing, the valve stem 11 is driven by the driving assembly 12 to rotate along the valve body 1, and the valve stem 11 drives the limit ring 17 and the second sealing ring 24 to move synchronously. The valve stem 11 drives the ball core 3 to rotate synchronously while rotating, so as to conveniently control the opening and closing of the valve body 1. Before the valve stem 11 rotates, the piston rod of the first electric push rod 19 drives the clamping block 20 to move outward, and the piston rod and the sliding rod 22 of the first electric push rod 19 slide along the fixing block 21 to separate the clamping block 20 from the positioning groove 18. After separation, the valve stem 11 is rotated to a suitable angle, and the first electric push rod 19 returns to the initial position, so that the clamping block 20 is clamped with the positioning groove 18, so as to facilitate the fixing of the valve stem 11 and the ball core 3, simplify the opening and closing operation, improve the control efficiency, make the opening and closing of the valve body 1 more convenient, and facilitate the accurate positioning and fixing of the valve stem 11 and the ball core 3;

[0068] When the driving assembly 12 is used to pressurize the pressure tank 15, the piston rod of the second electric push rod 1207 pushes the moving block 1206 to slide along the guide rail 1205, and the moving block 1206 drives the forward and reverse motor 1201 to move synchronously, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to engage with the second gear 1209, and the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to rotate and engage and transmit to the second gear 1209 to rotate synchronously, and the main shaft of the blower 1202 rotates through the rotation of the second gear 1209, and the pressure gas is sucked and delivered to the inside of the delivery pipe 13. The delivery pipe 13 facilitates the delivery of the pressure gas to the inside of the pressure tank 15 through the delivery groove 14, so that the pressure inside the pressure tank 15 is increased, and the sliding ring 1001 and the valve seat 8 are pushed to move in the direction of the ball core 3, so that the efficient suction and delivery of air is realized, and the flexible adjustment of the internal pressure of the pressure tank 15 is convenient;

[0069] When the pressure of the pressure tank 15 needs to be released, the electric control valve 23 is opened and the air inside the pressure tank 15 flows back to the inside of the blower 1202 and then dispersed, which facilitates the adjustment of the pressure inside the pressure tank 15;

[0070] When the driving assembly 12 is used to drive the valve stem 11, the piston rod of the second electric push rod 1207 pushes the moving block 1206 to slide along the guide rail 1205, and the moving block 1206 drives the forward and reverse motor 1201 to move synchronously, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to engage with the third gear 1210, so that the output shaft of the forward and reverse motor 1201 drives the first gear 1208 to rotate and engage and transmit to the third gear 1210 to rotate synchronously, and the rotating third gear 1210 drives the valve stem 11 to rotate along the valve body 1, so that the rotating valve stem 11 drives the ball core 3 to rotate, providing power conditions for the opening and closing of the valve body 1, realizing precise control of the rotation angle and speed of the valve stem 11, ensuring the accuracy and reliability of the opening and closing of the valve body 1, and improving the opening and closing efficiency of the valve, and facilitating the rotation of the valve stem 11 and the blower 1202 through the forward and reverse motor 1201, thereby reducing the cost of use.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydrogen ball valve with automatic compensating sealing function, comprising a valve body (1), Features: The valve body (1) has a valve cavity (2) formed therein, a ball core (3) is provided therein, the middle outer peripheral wall of the ball core (3) is slidably connected to the middle inner surface of the valve cavity (2), both ends of the valve body (1) are provided with connecting pieces (4), one end of the connecting piece (4) is fixedly provided with a flange pipe (5), four corners of the outer wall of the connecting piece (4) are plugged with connecting bolts (6), both ends of the valve body (1) are threadedly connected to the connecting bolts (6) through threaded holes, a pressure monitoring instrument body (7) is installed on the bottom surface of the valve body (1), the pressure monitoring instrument body (7) is connected to the valve cavity (2), two valve seats (8) are respectively contacted at the two ends of the outer peripheral wall of the valve body (1), a sealing gasket (16) is fixedly provided on the inner wall of the valve seat (8), the inner wall of the sealing gasket (16) is rotatably connected to the outer wall of the ball core (3), a first compensation component (9) is provided on the valve seat (8), and an elastic sealing ring (901) is provided on the first compensation component (9); A second compensation component (10) is provided at the outer end of the valve seat (8), a sliding ring (1001) is provided on the second compensation component (10), the sliding ring (1001) is fixedly mounted on the valve seat (8), two pressure grooves (15) are provided in a symmetrical structure inside the valve body (1), the sliding ring (1001) is slidably connected to the pressure grooves (15), the first compensation component (9) and the second compensation component (10) are provided with two symmetrical structures respectively, a valve stem (11) is fixedly mounted on the top surface of the ball core (3), the valve stem (11) is rotatably connected to the valve body (1), a driving component (12) is provided on the top surface of the valve body (1), a forward and reverse motor (1201) is provided on the driving component (12), two conveying grooves (14) are provided on the top surface of the valve body (1), the conveying grooves (14) are connected to the pressure grooves (15); The valve body (1) is connected to a delivery pipe (13), both ends of the delivery pipe (13) are connected to a delivery groove (14), and two electric control valves (23) are symmetrically mounted on the delivery pipe (13); The driving assembly (12) comprises a blower (1202), the air outlet end of the blower (1202) being connected to the delivery pipe (13), a bracket (1203) being fixedly provided on the top surface of the valve body (1), the blower (1202) being mounted on the outer wall of the bracket (1203) via a mounting seat, and a support block (1204) being fixedly provided on the top surface of the bracket (1203); Two guide rails (1205) are fixedly arranged on the support block (1204); a moving block (1206) is slidably connected to the side wall of the support block (1204); the moving block (1206) and the guide rail (1205) are engaged with each other in a snap-fit ​​manner; the moving block (1206) and the guide rail (1205) are slidably connected; a second electric push rod (1207) is mounted on the support block (1204) via a mounting seat; a piston rod of the second electric push rod (1207) is fixedly connected to the side wall of the moving block (1206); The forward and reverse motor (1201) is mounted on the moving block (1206) via a mounting seat, a first gear (1208) is sleeved on the output shaft of the forward and reverse motor (1201), and a second gear (1209) is sleeved on the main shaft of the blower (1202); The first compensation component (9) comprises a spring (902), wherein a plurality of the springs (902) are provided in an annular array structure, the valve seat (8) and the valve body (1) form a spring accommodating chamber for accommodating the spring (902), one end of the spring (902) is fixedly connected to the valve seat (8), and the other end of the spring (902) is fixedly connected to the inner wall of the valve body (1), a gap is provided between the outer peripheral wall of the valve seat (8) on the side close to the ball core (3) and the inner wall of the valve body (1), a push ring (903) is slidably connected to the outer peripheral wall of the middle part of the valve seat (8), the outer peripheral wall of the push ring (903) is slidably connected to the inner wall of the valve body (1), and the inner side wall of the push ring (903) is fixedly connected to the outer peripheral wall of the elastic sealing ring (901); an elastic sealing ring accommodating chamber for accommodating the elastic sealing ring (901) is formed between the push ring (903), the valve body (1) and the valve seat (8), and the elastic sealing ring accommodating chamber, the spring accommodating chamber and the gap are connected.

2. The hydrogen ball valve with automatic compensating sealing function as claimed in claim 1, Features: The valve body (1) is symmetrically structured and provided with two elastic sleeves (904); the outer wall of the elastic sleeve (904) is fixedly connected to the valve body (1); and the outer wall of the push ring (903) is slidably connected to the elastic sleeve (904).

3. The hydrogen ball valve with automatic compensating sealing function as claimed in claim 2, Features: The second compensation component (10) comprises a sealing strip (1002), two of which are provided, a plurality of slots (1003) are provided on the sliding ring (1001), the sealing strip (1002) is snap-fitted with the slots (1003) on the inner wall of the sliding ring (1001), the inner wall of the sealing strip (1002) is slidably connected with the groove wall of the pressure groove (15), a first sealing ring (1004) is snap-fitted inside the slots (1003) on the outer wall of the sliding ring (1001), and the outer peripheral wall of the first sealing ring (1004) is slidably connected with the groove wall of the pressure groove (15).

4. The hydrogen ball valve with automatic compensating sealing function as claimed in claim 1, Features: A limiting ring (17) is sleeved on the lower end of the valve stem (11); a plurality of second sealing rings (24) are sleeved on the outer peripheral wall of the lower end of the valve stem (11); the limiting ring (17) and the second sealing rings (24) are rotatably connected to the upper end of the valve body (1) respectively; a plurality of positioning grooves (18) are opened on the outer peripheral wall of the upper end of the valve stem (11); a first electric push rod (19) is mounted on the top surface of the valve body (1) through a mounting seat; a clamping block (20) is fixedly connected to the piston rod of the first electric push rod (19); the clamping block (20) is clamped and matched with the positioning groove (18); the piston rod of the first electric push rod (19) is slidably connected to a fixed block (21); the fixed block (21) is fixedly arranged on the top surface of the valve body (1); a sliding rod (22) is slidably connected to the fixed block (21); one end of the sliding rod (22) is fixedly connected to the side wall of the clamping block (20).

5. The hydrogen ball valve with automatic compensating sealing function as claimed in claim 1, Features: The outer peripheral wall of the upper end of the valve stem (11) is sleeved with a third gear (1210), the second gear (1209) and the third gear (1210) are located in the same horizontal plane, and the first gear (1208) is meshedly connected with the second gear (1209) and the third gear (1210) respectively.

Images