LNG filling protection device

Abstract

The application relates to the technical field of filling protection, and discloses an LNG filling protection device which comprises a program filling gun, locking columns arranged in the middle of two handles, a positive positioning component and a supporting component; the positive positioning component comprises an extrusion assembly arranged at the end of the program filling gun, a pushing assembly arranged at one side of the extrusion assembly, a positive positioning assembly arranged at one side of the pushing assembly, and a reset assembly arranged at one side of the pushing assembly; the extrusion assembly comprises an extrusion plate arranged at the top of the supporting component, a fixing seat arranged at one side of the extrusion plate, a T-shaped groove arranged on the supporting component, and an arc-shaped surface arranged at the top of the extrusion plate. The limiting assembly is arranged, so that when the filling gun is inserted at a correct angle and the filling opening is locked, three supporting plates support the filling gun, the supporting and locking strength during locking of the filling gun is enhanced, and the liquid filling safety and the protection performance of the filling gun are improved.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of LNG refueling protection technology, and particularly to an LNG refueling protection device. Background Technology

[0002] Liquefied natural gas, or LNG for short, is mainly composed of methane and is widely recognized as the cleanest fossil fuel on Earth. It is colorless, odorless, non-toxic, and non-corrosive. Its volume is approximately 1 / 625 of that of the same amount of gaseous natural gas, and its mass is only about 45% of that of the same volume of water.

[0003] The patent with publication number CN217684399U discloses a lightweight and stable LNG dispensing gun. When dispensing LNG, the handle of the dispensing gun is held to keep the gun body horizontal. The handle is aligned with the dispensing gun base at its natural angle and pushed in to the bottom. The dispensing gun pawl automatically locks into the dispensing gun base under the action of the pawl spring to prevent it from coming out. Pushing it horizontally forward allows the dispensing gun main tube to be inserted into the gun base, completing the dispensing insertion. This simplifies the connection between the shaft and the main tube and the external components, reduces wear, and strengthens, simplifies and optimizes the intermediate transmission components, greatly reducing the weight of the gun body.

[0004] However, the aforementioned patents still have the following drawbacks:

[0005] 1. When inserting the dispensing gun, it is necessary to manually keep it horizontal. Maintaining a horizontal position is difficult, which makes it impossible for the dispensing gun to be completely aligned with the dispensing port. This makes it difficult to insert or lock the gun when dispensing. If it is inserted into the dispensing port at an angle, it may not be able to completely seal the dispensing port, resulting in liquid leakage during dispensing and creating a safety hazard.

[0006] 2. Prolonged tilting insertion and locking can cause wear and damage to the filling port and locking claws, reducing the service life of the filling gun. It can also lead to insufficient stability of the locking during filling. The filling gun itself is relatively heavy, which may cause it to fall off if it is not locked properly. The locking support strength is not high enough. Summary of the Invention

[0007] In view of the existing technical problems, such as the difficulty for staff to keep the liquid filling gun horizontally when filling, resulting in unstable fixation after insertion, difficulty in insertion or locking, and thus insufficient safety, an LNG filling protection device is proposed.

[0008] Its purpose is to ensure that the liquid dispensing gun is always aligned with the liquid dispensing port through the positioning component, thereby avoiding liquid leakage accidents caused by difficulty in inserting the liquid dispensing gun, failure to lock after insertion, or poor sealing after locking, thus improving safety and stability of the liquid dispensing gun during the liquid dispensing process.

[0009] The technical solution of the present invention is an LNG refueling protection device, including a programmable refueling gun and handles symmetrically arranged on both sides of the programmable refueling gun, and a locking pin arranged in the middle of the two handles. The device is characterized in that it also includes a positioning component and a support component.

[0010] The positioning component array is located at the end of the programmable dispensing gun to keep the programmable dispensing gun horizontal during dispensing.

[0011] The support component array is disposed at the end of the programmable liquid dispensing gun and is used to support the programmable liquid dispensing gun during liquid dispensing.

[0012] The positioning component includes a squeezing assembly disposed at the end of the programmable liquid dispensing gun, a pushing assembly disposed on one side of the squeezing assembly, a positioning component disposed on one side of the pushing assembly, and a resetting assembly disposed on one side of the pushing assembly.

[0013] The extrusion assembly includes an extrusion plate disposed on the top of the support member, a fixing seat disposed on one side of the extrusion plate, a T-shaped groove opened on the support member, the extrusion plate being T-shaped, and an arc-shaped surface disposed on the top of the extrusion plate.

[0014] Using the above technical solution, during refilling, the programmable refill gun is inserted into the refill port. During the insertion process, the bottom of the extrusion plate is squeezed and the extrusion plate retracts into the support component. The fixed seat pushes the component to move, causing the entire positioning component to move upward. The T-slot is designed to cooperate with the extrusion plate, improving the stability of the extrusion plate's movement. The arc-shaped surface facilitates the contraction of the extrusion plate when it is squeezed.

[0015] Furthermore, a filling assembly is provided at the bottom of the locking post. The filling assembly includes a locking ring disposed on one side of the locking post, a locking claw disposed inside the locking ring, and a filling ring disposed at the bottom of the locking claw.

[0016] Using the above technical solution, during operation, first hold the handles with both hands and align the filling ring with the filling port. The height of the squeezing plate should not be higher than the height of the filling ring to facilitate the initial alignment of the filling ring. After alignment, push the handles into the filling port. When the filling ring is fully inside the filling port, push the two handles to one side of the filling ring. The locking pin pushes the locking ring, and the locking ring squeezes the locking claw inside, so that the locking claw locks the filling port. At this time, LNG is added.

[0017] Furthermore, the pushing assembly includes a pushing rod disposed on one side of the fixed base, a pushing plate disposed on one side of the pushing rod, a pushing hole opened on the pushing plate, and pushing columns disposed on both sides of the pushing plate, wherein the two pushing columns are fixedly connected to the fixed base and the pushing hole respectively, and the pushing columns are rotatably connected to the pushing rod.

[0018] Using the above technical solution, when the extrusion plate is extruded, the fixed seat pushes the push rod, and the three push rods push the push plate to move synchronously. The push plate drives the internal positioning component to move synchronously. When the three support plates move upward a different distance, that is, the positions of the programmable liquid gun and the liquid inlet remain inconsistent, the support plates push different parts of the positioning component to move a different distance, causing the positioning component to be jammed, thereby protecting the programmable liquid gun.

[0019] Furthermore, the positioning component includes an annular groove formed on the side wall of the locking ring, a first abutting surface and a second abutting surface disposed on both sides of the annular groove, with one side of the push plate abutting against the first abutting surface, an array of positioning inner strips disposed on the annular groove, with one side of the positioning inner strips being knife-shaped, a positioning outer strip disposed on the inner side of the push plate, and a slot formed on one side of the positioning inner strip, with one side of the slot also being knife-shaped.

[0020] By adopting the above technical solution, when the push plate is moved, if the position of the programmable dispensing gun and the dispensing port are kept consistent, that is, the movement distance of the three support plates is consistent, the three sides of the push plate move horizontally synchronously, allowing the outer positive strip to slide on the inner positive strip. When the programmable dispensing gun is inserted at an angle, the three support plates are squeezed to different degrees, resulting in different movement distances. This causes the push plate to move out of position, causing the slots on the outer positive strip and the inner positive strip to engage, preventing the push plate from moving further. Consequently, the support plates cannot be squeezed and retracted. Only when the position of the programmable dispensing gun is adjusted to be consistent with the dispensing port can it continue to be inserted. This avoids the programmable dispensing gun being inserted into the dispensing port at an angle, which would cause liquid leakage during dispensing, failure of the locking claw to lock, wear and tear, and damage to the dispensing gun. This protects the dispensing gun, improves the safety during dispensing, and extends the service life of the dispensing gun.

[0021] Furthermore, the reset assembly includes a reset plate disposed on one side of the locking ring, a reset member disposed on the reset plate, one side of the reset member being fixedly connected to the push plate, and the reset member being sleeved on the locking ring.

[0022] Using the above technical solution, the reset component is used to reset the positioning component and the support component after the liquid gun is pulled out. After the liquid gun is pulled out, the reset component resets and pushes the push plate to reset. The reset component can be a spring, so that the push plate reaches the first contact surface and abuts against it.

[0023] Furthermore, the support component includes a support assembly arrayed on the reset plate, a retraction assembly disposed inside the support assembly, and a limiting assembly disposed on one side of the support assembly;

[0024] The support assembly includes a rotating groove on the reset plate, a support plate on the rotating groove, rotating columns symmetrically arranged on both sides of the support plate, with one side of the rotating column fixedly connected to the rotating groove, and a support slope on the bottom of the support plate.

[0025] Using the above technical solution, when inserting the liquid filling gun, when the squeezing component pushes the pushing component, causing the pushing component to move the positioning component to the first contact surface, at this time, one side of the pushing plate reaches the disengagement point, causing the pushing plate to disengage from the limiting component, and the support plate is just fully retracted into the support plate. At this time, continue inserting the liquid filling gun so that the filling ring is fully inserted into the liquid filling port. Then, turn the handle to move the locking ring, squeezing the locking claw to lock the liquid filling port. At this time, the three support plates are squeezed and unfolded, and the support slope facilitates the support plate to support the area around the liquid filling port, preventing the liquid filling gun from falling off or even dropping due to its own weight if the locking is not secure during liquid filling, thus preventing damage to the liquid filling gun. This improves the stability during liquid filling, further enhances the safety performance during liquid filling, and strengthens the locking strength of the locking claw during liquid filling.

[0026] Furthermore, the recovery assembly includes sliding grooves symmetrically opened on the extrusion plate, recovery components symmetrically arranged on both sides of the extrusion plate, with one side of the recovery component fixedly connected to one side of the T-shaped groove, a recovery point opened in the T-shaped groove, and sliding strips symmetrically arranged on the T-shaped groove, with the sliding strips slidably connected to the sliding groove.

[0027] Using the above technical solution, when the support plate unfolds for support, the extrusion plate extrudes the recovery component, which can be a spring. At this time, the recovery component is compressed. When the liquid gun finishes adding liquid and is pulled out, the liquid ring slowly disengages from the liquid inlet. At this time, the three unfolded support plates will push the extrusion plate to move to the recovery point under the reset action of the recovery component. During this process, the extrusion plate is always compressed in the T-groove. When the support plate returns to the vertical state, the liquid gun is pulled out again, and the extrusion plate can be reset and moved out of the T-groove.

[0028] Furthermore, the limiting component includes a limiting member disposed in the middle of one side of the support plate. The limiting member is made of a material with a certain hardness that can undergo slight deformation to avoid interference with the offset of the push plate. A sliding surface is provided on the top side of the limiting member, a disengagement point is provided on the support plate and at the horizontal end of the limiting member, and a limiting hole is provided on the push plate.

[0029] Using the above technical solution, during the liquid insertion process, the squeezing plate is squeezed and retracted into the T-groove. When one side of the squeezing plate reaches the recovery point, that is, one side of the pushing plate abuts against the second contact surface, and the other side of the pushing plate reaches the release point, at this time, when the liquid gun is inserted again, the support plate is squeezed and unfolded, which improves the stability during the insertion process. During the withdrawal process, because the squeezing plate is always squeezed into the support plate, the pushing plate always abuts against the second contact surface. When the three support plates are reset to the vertical state, the squeezing plate resets and pops out, so that the pushing plate limiting component is re-inserted into the limiting hole, thereby achieving the limiting of the support plate again.

[0030] A method of using an LNG refueling protection device includes the following steps:

[0031] S1, First, align the filling ring with the filling port and insert it. During the insertion process, the squeezing plate is squeezed, the squeezing assembly slides in the T-slot, and pushes the assembly.

[0032] S2, after the pushing component is pushed, it will cause the outer aligning strip in the aligning component to slide on the inner aligning strip. When the three squeezing components are squeezed to different degrees, that is, the program liquid gun is not kept horizontal with the liquid inlet, the squeezing components push the pushing component to different degrees, causing the outer aligning strip and the inner aligning strip to be misaligned and stuck, so that the squeezing components can no longer be squeezed.

[0033] S3, until the programmable filling gun and the filling port are level, the push component moves on the positioning component and the limit component. When the push component is disengaged from the limit component, the filling ring just fully enters the filling port.

[0034] S4, at this time, pushing the handle causes the locking pin to push the locking ring, the locking ring to squeeze the locking claw to lock the liquid filling port, and the support plate is squeezed and unfolded to support the programmable liquid filling gun during liquid filling.

[0035] By adopting the above technical solution, the positioning component ensures that the dispensing gun must be aligned with the dispensing port to complete the insertion of the dispensing gun, thus guaranteeing the correct insertion position of the dispensing gun during dispensing and enhancing the safety of using the dispensing gun. The support component supports the dispensing component of the dispensing gun during dispensing, ensuring the stability of dispensing.

[0036] Furthermore, when the filling is completed and the program filling gun is pulled out, the recovery component first resets so that the three support plates are retracted. Then the reset component resets and pushes the squeezing component to reset. During the reset process, the limit component is limited to facilitate the next deployment.

[0037] By adopting the above technical solution and setting a limiting component, when the dispensing gun is inserted at the correct angle and the dispensing port is locked, the three support plates support the dispensing gun, which enhances the support and locking strength of the dispensing gun when it is locked, improves the safety of dispensing and the protection performance of the dispensing gun.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. When the three extrusion plates are squeezed to different degrees, i.e. the programmable dispensing gun is not level with the dispensing port, the extrusion plates push the push rod to different degrees, causing the push plate to move unevenly. This results in the outer and inner aligning bars becoming misaligned and jammed, preventing the extrusion plates from being squeezed back. In other words, the dispensing gun cannot be inserted. Only when the position of the programmable dispensing gun is adjusted to be aligned with the dispensing port can it be inserted. This prevents the programmable dispensing gun from being inserted into the dispensing port at an angle, which could cause liquid leakage during dispensing, failure of the locking claw to lock, wear and tear, and damage to the dispensing gun. This protects the dispensing gun, improves the safety of dispensing, and extends the service life of the dispensing gun.

[0040] 2. By setting a limiting component, when the dispensing gun is inserted at the correct angle and the dispensing port is locked, the three support plates support the dispensing gun, which enhances the support and locking strength of the dispensing gun when it is locked, improves the safety of dispensing and the protection performance of the dispensing gun.

[0041] 3. During the insertion and dispensing process of the dispensing gun, the squeezing plate is squeezed and retracted into the T-groove. When one side of the squeezing plate reaches the recovery point, the other side of the pushing plate reaches the release point, that is, the pushing plate releases from the limit of the limiting component, so that the support plate can be unfolded for support during the insertion process. At this time, when the dispensing gun is inserted again, the support plate is squeezed and unfolded. Through the support component, the dispensing component of the dispensing gun is supported during dispensing, which improves the stability during the insertion and dispensing process. Attached Figure Description

[0042] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0043] Figure 2 This is a schematic diagram of the overall structure of the end of the present invention;

[0044] Figure 3 This is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0045] Figure 4 This is a schematic diagram of the overall structure of the extrusion assembly of the present invention;

[0046] Figure 5 This is a schematic diagram of the overall structure of the filling component of the present invention;

[0047] Figure 6 This is a schematic diagram of the overall structure of the component driving the present invention;

[0048] Figure 7 This is a three-dimensional structural diagram of the orthogonal component of the present invention;

[0049] Figure 8 This is a schematic cross-sectional view of the orthogonal component of the present invention;

[0050] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle;

[0051] Figure 10 This is a schematic diagram of the overall structure of the reset component of the present invention;

[0052] Figure 11 This is a schematic diagram of the overall structure of the support component of the present invention;

[0053] Figure 12 This is a schematic diagram of the overall structure of the recovery component of the present invention;

[0054] Figure 13 This is a schematic cross-sectional view of the limiting component of the present invention.

[0055] In the picture:

[0056] 1. Handle; 2. Locking pin; 3. Extrusion assembly; 31. Extrusion plate; 32. Fixing base; 33. T-slot; 34. Arc-shaped surface; 4. Filling assembly; 41. Locking ring; 42. Locking claw; 43. Filling ring; 5. Pushing assembly; 51. Push rod; 52. Push plate; 53. Push hole; 54. Pushing pin; 6. Positioning assembly; 61. Annular groove; 62. First abutment surface; 63. Second abutment surface; 64. Positioning inner... 65. Outer bar in positive position; 66. Slot; 7. Reset assembly; 71. Reset plate; 72. Reset component; 8. Support assembly; 81. Rotating groove; 82. Support plate; 83. Rotating column; 84. Support inclined surface; 9. Retraction assembly; 91. Sliding groove; 92. Retraction component; 93. Sliding bar; 94. Retraction point; 10. Limiting assembly; 101. Limiting component; 102. Sliding surface; 103. Disengagement point; 104. Limiting hole. Detailed Implementation

[0057] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0058] Example 1, referring to Figures 1-4This is the first embodiment of the present invention, which provides an LNG refueling protection device, including a programmed refueling gun and handles 1 symmetrically installed on both sides of the programmed refueling gun, and locking pins 2 fixedly connected to the middle of the two handles 1. It also includes a positioning component and a support component. The positioning component array is installed at the end of the programmed refueling gun to keep the programmed refueling gun in a horizontal position during refueling. The support component array is installed at the end of the programmed refueling gun and can be a support frame installed at the end of the programmed refueling gun. The positioning component includes a squeezing assembly 3 installed at the end of the programmed refueling gun, a pushing assembly 5 installed on one side of the squeezing assembly 3, a positioning component 6 installed on one side of the pushing assembly 5, and a reset assembly 7 installed on one side of the pushing assembly 5. The squeezing assembly 3 includes a squeezing plate 31 slidably connected to the top of the support component, a fixing seat 32 fixedly connected to one side of the squeezing plate 31, a T-shaped groove 33 opened on the support component, and the squeezing plate 31 is T-shaped, and an arc-shaped surface 34 opened on the top of the squeezing plate 31.

[0059] Specifically, during refilling, the programmable refill gun is inserted into the refill port. During the insertion process, the bottom of the squeeze plate 31 is squeezed, and the squeeze plate 31 retracts into the support component. The fixed seat 32 pushes the push assembly 5 to move, causing the entire positioning component to move upward. The T-slot 33 is designed to cooperate with the squeeze plate 31, improving the stability of the movement of the squeeze plate 31. The arc surface 34 facilitates the contraction of the squeeze plate 31 when it is squeezed.

[0060] Reference Figures 1-5 The bottom of the locking post 2 is equipped with a filling component 4. The filling component 4 includes a locking ring 41 fixedly connected to one side of the locking post 2, a locking claw 42 installed inside the locking ring 41, and a filling ring 43 installed at the bottom of the locking claw 42.

[0061] Specifically, during operation, first hold handle 1 with both hands and align the filling ring 43 with the filling port. The height of the squeezing plate 31 should not be higher than the height of the filling ring 43 to facilitate the initial alignment of the filling ring 43. After alignment, push handle 1 into the filling port. When the filling ring 43 is fully inside the filling port, push both handles 1 to one side of the filling ring. The locking pin 2 pushes the locking ring 41, and the locking ring 41 squeezes the locking claw 42 inside, so that the locking claw 42 locks the filling port. At this time, LNG is added.

[0062] Reference Figures 1-6 The pushing assembly 5 includes a pushing rod 51 rotatably connected to one side of the fixed base 32, a pushing plate 52 rotatably connected to one side of the pushing rod 51, a pushing hole 53 opened on the pushing plate 52, and pushing columns 54 respectively fixedly connected to both sides of the pushing plate 52. The two pushing columns 54 are respectively fixedly connected to the fixed base 32 and the pushing hole 53, and the pushing columns 54 are rotatably connected to the pushing rod 51.

[0063] Specifically, when the extrusion plate 31 is extruded, the fixed base 32 pushes the push rod 51, and the three push rods 51 simultaneously push the push plate 52 to move. The push plate 52 drives the internal positioning component 6 to move synchronously. When the three support plates 82 move upward a different distance, that is, the positions of the programmable liquid gun and the liquid inlet remain inconsistent, the support plates 82 push different parts of the positioning component 6 to move a different distance, causing the positioning component 6 to be stuck, thereby protecting the programmable liquid gun.

[0064] Reference Figures 1-9 The positioning component 6 includes an annular groove 61 on the side wall of the locking ring 41, a first abutting surface 62 and a second abutting surface 63 on both sides of the annular groove 61, and one side of the push plate 52 abutting against the first abutting surface 62, an inner positioning bar 64 fixedly connected to the annular groove 61, one side of the inner positioning bar 64 being knife-shaped, an outer positioning bar 65 fixedly connected to the inside of the push plate 52, and a slot 66 on one side of the inner positioning bar 64, one side of the slot 66 also being knife-shaped.

[0065] Specifically, when the push plate 52 is moved, if the position of the programmable dispensing gun and the dispensing port are consistent, that is, the movement distance of the three support plates 82 is consistent, the three sides of the push plate 52 move horizontally synchronously, causing the outer positive strip 65 to slide on the inner positive strip 64. When the programmable dispensing gun is inserted at an angle, the three support plates 82 are squeezed to different degrees, resulting in different movement distances. This causes the push plate 52 to move out of position, causing the slots 66 on the outer positive strip 65 and the inner positive strip 64 to engage, preventing the push plate 52 from moving further. Consequently, the support plates 82 cannot be squeezed and retracted. Only when the position of the programmable dispensing gun is adjusted to be consistent with the dispensing port can it continue to be inserted. This avoids the programmable dispensing gun being inserted into the dispensing port at an angle, which would cause liquid leakage during dispensing, failure of the locking claw 42 to lock, wear, and damage to the dispensing gun. This protects the dispensing gun, improves the safety during dispensing, and extends the service life of the dispensing gun.

[0066] Reference Figures 1-10 The reset assembly 7 includes a reset plate 71 fixedly connected to one side of the locking ring 41, a reset member 72 fixedly connected to the reset plate 71, and one side of the reset member 72 fixedly connected to the push plate 52, and the reset member 72 is sleeved on the locking ring 41.

[0067] Specifically, the reset component 7 is used to reset the positioning component and the support component after the liquid gun is pulled out. After the liquid gun is pulled out, the reset component 72 resets and pushes the push plate 52 to reset. The reset component 72 can be a spring, so that the push plate 52 reaches the first contact surface 62 and abuts against it.

[0068] During use, first align the filling ring 43 with the filling port and insert it. During insertion, the squeezing plate 31 is squeezed and slides within the T-slot 33, pushing the push rod 51. The push plate 52 pushes the push rod 52, and the push plate 52, after being pushed, will cause the outer aligning strip 65 in the aligning assembly 6 to slide on the inner aligning strip 64. When the three squeezing plates 31 are squeezed to different degrees, that is, when the programmable filling gun is not level with the filling port, the squeezing plates 31 push the push rod 51 to different degrees, causing... The non-horizontal movement of the push plate 52 causes the outer and inner bars 65 to misalign and jam, preventing the extrusion plate 31 from being extruded and retracted. This means the dispensing gun cannot be inserted until its position is aligned with the dispensing port. This prevents the dispensing gun from being inserted at an angle into the dispensing port, which could lead to liquid leakage, failure of the locking claw 42 to lock, wear, and damage to the dispensing gun. This protects the dispensing gun, improves safety during dispensing, and extends its service life.

[0069] Example 2, refer to Figures 1-11 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the support component includes a support assembly 8 arrayed on the reset plate 71, a retraction assembly 9 installed inside the support assembly 8, and a limiting assembly 10 installed on one side of the support assembly 8. The support assembly 8 includes a rotating groove 81 opened on the reset plate 71, a support plate 82 movably connected to the rotating groove 81, rotating columns 83 symmetrically rotatably connected to both sides of the support plate 82, and one side of the rotating column 83 is fixedly connected to the rotating groove 81, and a support slope 84 opened at the bottom of the support plate 82.

[0070] Specifically, during the liquid injection process, when the squeezing component 3 pushes the pushing component 5, causing the pushing component 5 to move the positioning component 6 to the first contact surface 62, at this time, one side of the pushing plate 52 reaches the disengagement point 103, causing the pushing plate 52 to disengage from the limiting component 10, and the support plate 82 is just fully retracted into the support plate 82. At this time, the liquid injection gun is continued to be inserted so that the injection ring 43 is fully inserted into the liquid injection port. Then, the handle 1 is turned so that the locking ring 41 moves, squeezing the locking claw 42 to lock the liquid injection port. At this time, the three support plates 82 are squeezed and unfolded, and the support slope 84 and the support plate 82 provide support around the liquid injection port, preventing the liquid injection gun from falling off or even dropping due to excessive weight of the liquid injection gun after the lock is not secure during liquid injection, thus preventing damage to the liquid injection gun. This improves the stability during liquid injection, further improves the safety performance during liquid injection, and enhances the locking strength of the locking claw 42 during liquid injection.

[0071] Reference Figures 1-12The recovery component 9 includes a sliding groove 91 symmetrically opened on the extrusion plate 31, recovery parts 92 symmetrically fixedly connected to both sides of the extrusion plate 31, with one side of the recovery parts 92 fixedly connected to one side of the T-shaped groove 33, a recovery point 94 opened in the T-shaped groove 33, and a sliding strip 93 symmetrically fixedly connected to the T-shaped groove 33, with the sliding strip 93 slidably connected to the sliding groove 91.

[0072] Specifically, when the support plate 82 is unfolded for support, the squeezing plate 31 squeezes the recovery component 92. The recovery component 92 can be a spring. At this time, the recovery component 92 is compressed. When the liquid gun finishes adding liquid and is pulled out, the liquid ring slowly disengages from the liquid inlet. At this time, the three unfolded support plates 82 will push the squeezing plate 31 to move to the recovery point 94 under the reset action of the recovery component 92. During this process, the squeezing plate 31 is always compressed in the T-groove 33. When the support plate 82 returns to the vertical state, the liquid gun is pulled out again, and the squeezing plate 31 can be reset and moved out of the T-groove 33.

[0073] During use, when the programmable dispensing gun is level with the dispensing port, the push plate 52 moves on the annular groove 61 and on the limiting member 101. When the push plate 52 disengages from the limiting member 101, the dispensing ring 43 is fully inserted into the dispensing port. At this time, pushing the handle 1 causes the locking pin 2 to push the locking ring 41, which in turn presses the locking claw 42 to lock the dispensing port. The support plate 82 is also compressed and unfolded, providing support for the programmable dispensing gun during dispensing. When dispensing is complete, the programmable dispensing gun is pulled out. The receiving component 92 first resets, causing the three support plates 82 to retract to a vertical position. Then, the resetting component 72 resets, pushing the squeezing plate 31 to reset. During the resetting process, the resetting component 72 re-limits the limiting component 101, facilitating the next unfolding. By setting the limiting component 10, when the liquid gun is inserted at the correct angle and the liquid inlet is locked, the three support plates 82 support the liquid gun, enhancing the support and locking strength when the liquid gun is locked, improving the liquid dispensing safety and the protection performance of the liquid gun.

[0074] The remaining structure is the same as that in Example 1.

[0075] Example 3, referring to Figures 1-13 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the limiting component 10 includes a limiting member 101 fixedly connected to the middle of one side of the support plate 82. The limiting member 101 is made of a material with a certain hardness that can undergo slight deformation to avoid interference with the offset of the push plate 52 caused by the limiting member 101. A sliding surface 102 is opened on the top side of the limiting member 101, a disengagement point 103 is opened on the support plate 82 and horizontally at the end of the limiting member 101, and a limiting hole 104 is opened on the push plate 52.

[0076] Specifically, during the liquid injection insertion process, the squeezing plate 31 is squeezed and retracted into the T-groove 33. When one side of the squeezing plate 31 reaches the recovery point 94, that is, one side of the pushing plate 52 abuts against the second contact surface 63, and the other side of the pushing plate 52 reaches the disengagement point 103, at this time, when the liquid injection gun is inserted again, the support plate 82 is squeezed and unfolded, which improves the stability during the insertion process. During the withdrawal process, because the squeezing plate 31 is always squeezed into the support plate 82, the pushing plate 52 always abuts against the second contact surface 63. When the three support plates 82 are reset to the vertical state, the squeezing plate 31 is reset and popped out, so that the limiting member 101 of the pushing plate 52 is re-inserted into the limiting hole 104, and the limiting of the support plate 82 is achieved again.

[0077] During use, when the dispensing gun is inserted for dispensing, the squeezing plate 31 is squeezed and retracted into the T-groove 33. When one side of the squeezing plate 31 reaches the recovery point 94, the other side of the pushing plate 52 reaches the release point 103, that is, the pushing plate 52 is released from the limit of the limiting member 101, so that the support plate 82 can be unfolded for support during the insertion process. At this time, when the dispensing gun is inserted again, the support plate 82 is squeezed and unfolded. The support component 8 supports the dispensing component of the dispensing gun during dispensing, which improves the stability during the insertion and dispensing process.

[0078] The remaining structure is the same as that in Example 2.

[0079] Example 4, refer to Figures 1-13 The fourth embodiment of the present invention provides a method for using an LNG refueling protection device, comprising the following steps:

[0080] S1, First, align the filling ring 43 with the filling port and insert it. During the insertion process, the squeezing plate 31 is squeezed, the squeezing assembly slides in the T-groove 33, and pushes the push assembly 5.

[0081] S2, after the pushing component 5 is pushed, it will cause the outer positive strip 65 in the positive component 6 to slide on the inner positive strip 64. When the three squeezing components 3 are squeezed to different degrees, that is, the program liquid gun is not kept horizontal with the liquid inlet, the squeezing components 3 push the pushing component 5 to different degrees, causing the outer positive strip 65 and the inner positive strip 64 to be misaligned and stuck to each other, so that the squeezing components 3 can no longer be squeezed.

[0082] S3, until the programmable liquid filling gun and the liquid filling port are level, the push component 5 moves on the positioning component 6, the push component 5 moves on the limiting component 10, and when the push component 5 is disengaged from the limiting component 10, the filling ring 43 just fully enters the liquid filling port.

[0083] S4, at this time, push the handle 1 so that the locking pin 2 pushes the locking ring 41, the locking ring 41 squeezes the locking claw 42 to lock the liquid filling port, and the support plate 82 is squeezed and unfolded to support the programmable liquid filling gun when adding liquid.

[0084] The positioning component 6 ensures that the dispensing gun must be aligned with the dispensing port for insertion, guaranteeing the correct insertion position and enhancing the safety of the dispensing gun. The support component 8 supports the dispensing components of the dispensing gun during dispensing, ensuring the stability of the dispensing process.

[0085] When the filling is completed and the program filling gun is pulled out, the recovery component first resets so that the three support plates 82 are retracted. Then the reset component 7 resets and pushes the squeezing component 3 to reset. During the reset process, the reset component 7 limits the limit component 10 to facilitate the next deployment.

[0086] By setting the limiting component 10, when the dispensing gun is inserted at the correct angle and the dispensing port is locked, the three support plates 82 support the dispensing gun, which enhances the support and locking strength of the dispensing gun when it is locked, improves the safety of dispensing and the protection performance of the dispensing gun.

[0087] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An LNG filling protection device, comprising a program filling gun and handles (1) symmetrically arranged on both sides of the program filling gun, and a locking column (2) arranged in the middle of the two handles (1), characterized in that, The array of the aligning components and the array of the supporting components are arranged at the end of the program liquid adding gun, and the aligning components are used for keeping the program liquid adding gun horizontal during liquid adding, and the supporting components are used for supporting the program liquid adding gun during liquid adding; The array of the aligning components and the array of the supporting components are arranged at the end of the program liquid adding gun, and the aligning components are used for keeping the program liquid adding gun horizontal during liquid adding, and the supporting components are used for supporting the program liquid adding gun during liquid adding; The aligning components comprise a pressing assembly (3) arranged at the end of the program liquid adding gun, a pushing assembly (5) arranged at one side of the pressing assembly (3), an aligning assembly (6) arranged at one side of the pushing assembly (5), and a resetting assembly (7) arranged at one side of the pushing assembly (5); The pressing assembly (3) comprises a pressing plate (31) arranged at the top of the supporting component, a fixed seat (32) arranged at one side of the pressing plate (31), a T-shaped slot (33) opened on the supporting component, and the pressing plate (31) is in T-shaped, and an arc surface (34) arranged at the top of the pressing plate (31); The bottom of the locking column (2) is provided with a filling assembly (4), and the filling assembly (4) comprises a locking ring (41) arranged at one side of the locking column (2), a locking claw (42) arranged in the locking ring (41), and a filling ring (43) arranged at the bottom of the locking claw (42); The pushing assembly (5) comprises a pushing rod (51) arranged at one side of the fixed seat (32), a pushing plate (52) arranged at one side of the pushing rod (51), a pushing hole (53) opened on the pushing plate (52), and two pushing columns (54) respectively arranged at two sides of the pushing plate (52), and the two pushing columns (54) are respectively fixedly connected with the fixed seat (32) and the pushing hole (53), and the pushing column (54) is rotationally connected with the pushing rod (51); The aligning assembly (6) comprises an annular groove (61) opened on the side wall of the locking ring (41), a first abutting surface (62) and a second abutting surface (63) arranged at two sides of the annular groove (61), one side of the pushing plate (52) abuts against the first abutting surface (62), an aligning inner strip (64) arranged in the annular groove (61), one side of the aligning inner strip (64) is in the shape of a sharp knife, an aligning outer strip (65) arranged in the inner side of the pushing plate (52), and a clamping groove (66) opened on one side of the aligning inner strip (64), and one side of the clamping groove (66) is also in the shape of a sharp knife. The resetting assembly (7) comprises a resetting plate (71) arranged at one side of the locking ring (41), a resetting piece (72) arranged on the resetting plate (71), one side of the resetting piece (72) is fixedly connected with the pushing plate (52), and the resetting piece (72) is sleeved on the locking ring (41).

2. An LNG fuelling protection device according to claim 1, characterised in that: The supporting component comprises an array of supporting assemblies (8) arranged on the resetting plate (71), a retracting assembly (9) arranged in the supporting assembly (8), and a limiting assembly (10) arranged at one side of the supporting assembly (8); 3. An LNG fuelling protection device according to claim 2, characterised in that: ​ The support assembly (8) comprises a rotating groove (81) formed on the reset plate (71), a support plate (82) arranged on the rotating groove (81), rotating columns (83) symmetrically arranged on both sides of the support plate (82), one side of the rotating column (83) is fixedly connected with the rotating groove (81), and a support inclined surface (84) formed on the bottom of the support plate (82).

4. An LNG fuelling protection device according to claim 3, characterised in that: The recovery assembly (9) comprises symmetrically formed sliding grooves (91) on the extrusion plate (31), recovery pieces (92) symmetrically arranged on both sides of the extrusion plate (31), one side of the recovery piece (92) is fixedly connected with one side of the T-shaped groove (33), a recovery point (94) is formed in the T-shaped groove (33), and sliding bars (93) are symmetrically arranged on the T-shaped groove (33) and are in sliding connection with the sliding grooves (91).

5. An LNG fuelling protection device according to claim 4, characterised in that: The limiting assembly (10) comprises a limiting piece (101) arranged on one side of the middle part of the support plate (82), a sliding surface (102) formed on one side of the top of the limiting piece (101), a disengagement point (103) arranged horizontally on the support plate (82) and the end of the limiting piece (101), and a limiting hole (104) formed on the push plate (52).

6. A method of using an LNG filling protection device, using an LNG filling protection device according to claim 5, characterized in that: The method comprises the following steps: S1, first, the filling ring (43) is aligned with the liquid inlet and then inserted, during the insertion process, the extrusion plate (31) is extruded, the extrusion assembly (3) slides in the T-shaped groove (33), and the push assembly (5) is pushed; S2, after the push assembly (5) is pushed, the positive outer strip (65) in the positive assembly (6) slides on the positive inner strip (64), when the three extrusion assemblies (3) are extruded to different degrees, that is, the program liquid filling gun does not keep horizontal with the liquid inlet, the extrusion assembly (3) pushes the push assembly (5) to different degrees, which causes the positive outer strip (65) and the positive inner strip (64) to be misaligned and stuck, so that the extrusion assembly (3) cannot be extruded again; S3, until the program liquid filling gun keeps horizontal with the liquid inlet, the push assembly (5) moves on the positive assembly (6), the push assembly (5) moves on the limiting assembly (10), when the push assembly (5) is disengaged from the limiting assembly (10), the filling ring (43) just completely enters the liquid inlet; S4, at this time, the push handle (1) pushes the locking ring (41) to make the locking column (2), the locking ring (41) extrudes the locking claw (42) to lock the liquid inlet, and the support plate (82) is extruded to be expanded, and the program liquid filling gun is supported during liquid filling.

7. A method of using an LNG fuelling protection device according to claim 6, characterised in that: When the filling is completed, the program liquid filling gun is pulled out, the recovery assembly is reset first to recover the three support plates (82), then the reset assembly (7) is reset to reset the extrusion assembly (3), and the limiting assembly (10) is limited during the reset process of the reset assembly (7), which is convenient for the expansion next time.

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