Low-temperature liquid adding gun for liquefied natural gas

Abstract

The utility model relates to the technical field of natural gas filling devices, and discloses a low-temperature liquid filling gun for liquefied natural gas, which comprises a base, a liquid filling device and a liquid filling device, the ejector pin mechanism is fixedly mounted on the left side of the base, and the ejector pin mechanism is used for controlling the filling state; and the automatic connecting mechanism is arranged on the base and the ejector pin mechanism, and the automatic connecting mechanism is used for being automatically clamped on the liquid adding clamping seat. Through the overall design of the automatic connecting mechanism, after the input valve is opened, the automatic connecting mechanism can penetrate through the connecting pipe and the annular pipeline to convey gas into the inner cavity of the strip-shaped pipe, and the sliding block is pushed to slide through the gas, so that the alloy clamping block is clamped on the outer wall of the vehicle liquid adding clamping seat, and the automatic fixing function is achieved; an operator does not need to fix the liquid adding gun on the liquid adding clamping seat by pulling the two handles, so that the labor intensity of the operator can be greatly reduced, and the liquid adding work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas refueling devices, specifically to a cryogenic refueling gun for liquefied natural gas. Background Technology

[0002] The cryogenic LNG filling nozzle is a dedicated piece of equipment for LNG refueling systems, primarily used to refuel LNG vehicles. Its design includes a sealing structure and bracket to ensure convenient and reliable operation. The nozzle connects to the filling hose and is freely movable, operated via a scissor-type dual-handle mechanism. After the nozzle aligns with the filling holder, LNG begins to be dispensed through the nozzle. Once filling is complete, the operator must detach the nozzle from the nozzle holder.

[0003] The existing structure uses a scissor-type operation for dual-handle drive. During use, the operator needs to forcefully pry the two handles during positioning and disassembly after docking. A considerable amount of force is required to complete the operation smoothly. When refueling different vehicles, the operator needs to repeatedly pry the two handles, which can easily lead to strain on the operator's arms. Utility Model Content

[0004] The purpose of this utility model is to provide a cryogenic filling gun for liquefied natural gas, which solves the problem that in the prior art, the operator still needs to manually turn the two handles during use, resulting in a high labor intensity for the operator.

[0005] This utility model provides the following technical solution: a cryogenic filling gun for liquefied natural gas, comprising:

[0006] A base, on the right side of which a handle is fixedly installed;

[0007] A ejector mechanism is fixedly installed on the left side of the base, and the ejector mechanism is used to control the dispensing status;

[0008] An automatic connection mechanism is provided on the base and the ejector pin mechanism, and is used to automatically clamp onto the liquid filling holder.

[0009] As a preferred embodiment of the above technical solution, the ejector mechanism includes a square tube, which is fixedly installed on the left side of the base. An internally threaded interface tube is fixedly connected to the bottom of the square tube, and an extension tube is fixedly connected to the left side of the square tube.

[0010] The above technical solution, through the design of the internal threaded interface pipe, allows for the connection of a liquid filling hose from the bottom of the structure, facilitating pipe arrangement.

[0011] As a preferred embodiment of the above technical solution, a limiting rod is fixedly installed between the two sides of the inner wall of the square pipe, a slider is slidably connected to the outer wall of the limiting rod, a pin is fixedly connected to the left side of the slider, and a threaded component is threadedly connected to the right side of the square pipe. The threaded end of the threaded component extends into the inner cavity of the square pipe and is rotatably connected to the right side of the slider.

[0012] Through the above technical solution, the design of the limiting rod, slider and threaded parts allows the ejector pin to be manually driven to extend and retract, which facilitates the control of the opening and closing of the liquid filling seat.

[0013] As a preferred embodiment of the above technical solution, the automatic connection mechanism includes a pipe joint body, which is fixedly connected to the left end of the extension pipe. A connecting support rod is fixedly installed on the outer wall of the pipe joint body, and an annular pipe is fixedly installed at the end of the connecting support rod away from the pipe joint body. A strip pipe is fixedly connected to the inner wall of the annular pipe.

[0014] Through the above technical solution, the annular pipe can be fixed by means of the pipe joint body through the design of the connecting support rod.

[0015] As a preferred embodiment of the above technical solution, an elastic element is fixedly installed on the inner wall of the strip tube, and a sliding block is fixedly connected to the end of the elastic element away from the inner wall of the strip tube. The sliding block is slidably connected to the inner wall of the strip tube, and a limit block is fixedly installed on the inner wall of the strip tube. A sliding shaft is fixedly connected to the end of the sliding block away from the elastic element, and an alloy arm is fixedly connected to the end of the sliding shaft away from the sliding block to the outside of the strip tube. An alloy clamping block is fixedly installed at the end of the alloy arm.

[0016] Through the above technical solution, the structure can be stably clamped onto the liquid filling bracket by the design of the number and distribution of alloy clamping blocks.

[0017] As a preferred embodiment of the above technical solution, the automatic connection mechanism further includes a T-shaped pipe, which is fixedly installed on the right side of the base. A connecting pipe is fixedly connected to the top of the T-shaped pipe, and the end of the connecting pipe away from the T-shaped pipe is fixedly connected to the right side of the annular pipe.

[0018] The above technical solution, through the design of the connecting pipe, allows the inner cavities of the tee pipe and the annular pipe to be connected, making it convenient for users to control from the grip.

[0019] As a preferred embodiment of the above technical solution, an output valve is fixedly connected to one side of the three-way pipe, an input valve is fixedly connected to the other side of the three-way pipe, an air source pipe is fixedly connected to the end of the input valve away from the three-way pipe, and a switch control device is fixedly installed on the outer wall of the three-way pipe.

[0020] The above technical solution, through the design of the output valve, input valve and switch control device, facilitates the control of the input and output of gas in the strip tube, and realizes the function of automatic clamping and release.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention, through the overall design of the automatic connection mechanism, allows gas to be delivered into the inner cavity of the strip tube through the connecting pipe and the annular pipe after the input valve is opened. The gas pushes the sliding block to slide, so that the alloy clamp is clamped on the outer wall of the vehicle's refrigerant holder, thus achieving automatic fixing. This eliminates the need for the operator to fix the refrigerant gun to the refrigerant holder by bending the two handles, which can greatly reduce the operator's labor intensity and improve the efficiency of refrigerant filling. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the annular pipe of this utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the strip tube of this utility model;

[0026] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0027] Figure 5 This is a cross-sectional structural diagram of the square pipe and the extension pipe body of this utility model.

[0028] In the diagram: 1. Base; 11. Handle; 2. Ejector mechanism; 21. Square pipe; 22. Internally threaded interface pipe; 23. Extension pipe body; 24. Threaded component; 25. Limiting rod; 26. Slider; 27. Ejector; 3. Automatic connection mechanism; 31. Pipe joint body; 32. Connecting support rod; 33. Annular pipe; 34. Strip pipe; 341. Elastic component; 342. Sliding block; 343. Sliding shaft; 344. Limiting block; 35. Alloy arm; 36. Alloy clamp; 37. Connecting pipe; 38. T-connector; 381. Output valve; 382. Input valve; 383. Air source pipe; 384. Switch control device. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] like Figures 1-5 As shown, this utility model provides a technical solution: a cryogenic filling gun for liquefied natural gas, comprising:

[0031] Base 1, with a handle 11 fixedly installed on the right side of base 1;

[0032] Ejector mechanism 2 is fixedly installed on the left side of base 1. Ejector mechanism 2 is used to control the filling status.

[0033] Automatic connection mechanism 3 is set on base 1 and ejector mechanism 2. Automatic connection mechanism 3 is used to automatically clamp on liquid filling card holder.

[0034] As one implementation method in this embodiment, such as Figure 1 , Figure 5 As shown, the ejector mechanism 2 includes a square pipe 21, which is fixedly installed on the left side of the base 1. An internally threaded interface pipe 22 is fixedly connected to the bottom of the square pipe 21. An extension pipe 23 is fixedly connected to the left side of the square pipe 21. A limit rod 25 is fixedly installed between the two sides of the inner wall of the square pipe 21. A slider 26 is slidably connected to the outer wall of the limit rod 25. An ejector pin 27 is fixedly connected to the left side of the slider 26. A threaded component 24 is threadedly connected to the right side of the square pipe 21. The threaded end of the threaded component 24 extends into the inner cavity of the square pipe 21 and is rotatably connected to the right side of the slider 26. The pipe connector body 3... After connecting to the liquid filling seat, manually rotate the threaded part 24. Because the end of the threaded part 24 is rotatably connected to the slider 26, the slider 26 can be pushed to the left on the outer wall of the limit rod 25, causing the ejector pin 27 to move to the left. The end of the ejector pin 27 can then open the switch structure inside the liquid filling seat, facilitating the smooth operation of the filling work. Rotating the threaded part 24 in the opposite direction will drive the ejector pin 27 to move to the right, releasing the opening state of the liquid filling seat. A circular groove is reserved on the side of the base 1, which allows the operator to control the rotation of the threaded part 24 on the square pipe 21 from the other side of the base 1.

[0035] As one implementation method in this embodiment, such as Figures 1-4As shown, the automatic connection mechanism 3 includes a pipe joint body 31, which is fixedly connected to the left end of the extension pipe 23. A connecting support rod 32 is fixedly installed on the outer wall of the pipe joint body 31. An annular pipe 33 is fixedly installed at the end of the connecting support rod 32 away from the pipe joint body 31. A strip pipe 34 is fixedly connected to the inner wall of the annular pipe 33. An elastic element 341 is fixedly installed on the inner wall of the strip pipe 34. A sliding block 342 is fixedly connected to the end of the elastic element 341 away from the inner wall of the strip pipe 34. The sliding block 342 is slidably connected to the inner wall of the strip pipe 34. A limit block 3 is fixedly installed on the inner wall of the strip pipe 34. 44. A sliding shaft 343 is fixedly connected to the end of the sliding block 342 away from the elastic element 341. The end of the sliding shaft 343 away from the sliding block 342 extends to the outside of the strip tube 34 and is fixedly connected to an alloy arm 35. An alloy clamp 36 is fixedly installed at the end of the alloy arm 35. The automatic connection mechanism 3 also includes a three-way pipe 38, which is fixedly installed on the right side of the base 1. A connecting pipe 37 is fixedly connected to the top of the three-way pipe 38. The end of the connecting pipe 37 away from the three-way pipe 38 is fixedly connected to the right side of the annular pipe 33. The pipe joint body 31 is prior art and is used to adapt and connect with the vehicle's liquid filling card holder, while also serving as... The sealing function is achieved by designing the actual length of the gas source pipe 383 according to the usage environment. The gas source pipe 383 is a flexible hose, and the end of the gas source pipe 383 away from the input valve 382 is connected to an external gas source. The strip pipe 34 has four evenly distributed through holes at one end near the annular pipe 33. The inner cavity of the strip pipe 34 is connected to the inner cavity of the annular pipe 33 through these through holes. By controlling the opening of the input valve 382, ​​pressurized gas can be delivered into the three-way pipe 38. The gas can pass through the connecting pipe 37 and the annular pipe 33 into the inner cavity of the strip pipe 34. The air pressure pushes the sliding block 342 to slide, and then through the sliding shaft 343 and the alloy arm 35... The transmission causes the alloy clamp 36 to be clamped on the outer wall of the vehicle's liquid filling seat, thus achieving automatic fixation and reducing manpower consumption. When the gas pushes the sliding block 342 to slide, it will simultaneously stretch the elastic element 341. After the filling is completed, the control output valve 381 is opened. The initial elastic force of the elastic element 341 can drive the sliding block 342 to reset and slide. The limit block 344 limits the sliding block 342. The gas inside the strip tube 34 will pass through the annular pipe 33, connecting pipe 37 and three-way pipe 38 and then be output from the output valve 381. At this time, the alloy clamp 36 will move away from the liquid filling seat and release the clamping and fixing state.

[0036] As one implementation method in this embodiment, such as Figures 1-4As shown, an output valve 381 is fixedly connected to one side of the three-way pipe 38, and an input valve 382 is fixedly connected to the other side of the three-way pipe 38. An air source pipe 383 is fixedly connected to the end of the input valve 382 away from the three-way pipe 38. A switch control device 384 is fixedly installed on the outer wall of the three-way pipe 38. Both the output valve 381 and the input valve 382 are existing electric valves, which are closed when not in operation. The switch control device 384 is a combination structure of an existing control switch and a power supply. The power supply is used to supply power to the output valve 381 and the input valve 382, ​​and the control switch is used to control the opening and closing of the output valve 381 or the input valve 382 to facilitate the use of this structure.

[0037] Working principle: In use, the filling hose is first connected to the internal threaded interface pipe 22, and then the pipe connector body 31 is mated to the filling seat. Then, the control input valve 382 is opened to deliver pressurized gas into the three-way pipe 38. The gas can pass through the connecting pipe 37 and the annular pipe 33 into the inner cavity of the strip pipe 34. The air pressure pushes the sliding block 342 to slide, and through the transmission of the sliding shaft 343 and the alloy arm 35, the alloy clamp 36 is clamped on the outer wall of the vehicle filling seat. Then, the threaded part 24 is manually rotated in the forward direction, pushing the slider 26 to the left on the outer wall of the limit rod 25, causing the ejector pin 27 to move to the left. The end of the ejector pin 27 can then open the switch structure inside the liquid filling seat, facilitating the smooth operation of the filling process. After the filling is completed, the threaded part 24 is rotated in the opposite direction, causing the ejector pin 27 to move to the right, releasing the opening state of the liquid filling seat. Then, the output valve 381 is opened, and the initial elastic force of the elastic part 341 can drive the sliding block 342 to reset and slide. The gas inside the strip tube 34 will pass through the annular pipe 33, the connecting pipe 37 and the three-way pipe 38 and then be output from the output valve 381. At this time, the alloy clamp 36 will move away from the liquid filling seat, releasing the clamping and fixing state. Then, this structure can be pulled out from the liquid filling seat to complete the filling operation.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A cryogenic dispensing gun for liquefied natural gas, characterized in that, include: A base (1) is provided, and a handle (11) is fixedly installed on the right side of the base (1); Ejector mechanism (2), which is fixedly installed on the left side of the base (1), is used to control the filling state; Automatic connection mechanism (3) is provided on base (1) and ejector mechanism (2), and is used to automatically clamp on liquid filling seat.

2. The cryogenic filling gun for liquefied natural gas according to claim 1, characterized in that: The ejector mechanism (2) includes a square pipe (21), which is fixedly installed on the left side of the base (1). An internal threaded interface pipe (22) is fixedly connected to the bottom of the square pipe (21), and an extension pipe (23) is fixedly connected to the left side of the square pipe (21).

3. A cryogenic filling gun for liquefied natural gas according to claim 2, characterized in that: A limiting rod (25) is fixedly installed between the two sides of the inner wall of the square pipe (21). A slider (26) is slidably connected to the outer wall of the limiting rod (25). A pin (27) is fixedly connected to the left side of the slider (26). A threaded component (24) is threadedly connected to the right side of the square pipe (21). The threaded end of the threaded component (24) extends into the inner cavity of the square pipe (21) and is rotatably connected to the right side of the slider (26).

4. A cryogenic filling gun for liquefied natural gas according to claim 2, characterized in that: The automatic connection mechanism (3) includes a pipe joint body (31), which is fixedly connected to the left end of the extension pipe (23). A connecting support rod (32) is fixedly installed on the outer wall of the pipe joint body (31). An annular pipe (33) is fixedly installed at the end of the connecting support rod (32) away from the pipe joint body (31). A strip pipe (34) is fixedly connected to the inner wall of the annular pipe (33).

5. A cryogenic filling gun for liquefied natural gas according to claim 4, characterized in that: An elastic element (341) is fixedly installed on the inner wall of the strip tube (34). A sliding block (342) is fixedly connected to one end of the elastic element (341) away from the inner wall of the strip tube (34). The sliding block (342) is slidably connected to the inner wall of the strip tube (34). A limit block (344) is fixedly installed on the inner wall of the strip tube (34). A sliding shaft (343) is fixedly connected to one end of the sliding block (342) away from the elastic element (341). The end of the sliding shaft (343) away from the sliding block (342) extends to the outside of the strip tube (34) and is fixedly connected to an alloy arm (35). An alloy clamp (36) is fixedly installed at the end of the alloy arm (35).

6. A cryogenic filling gun for liquefied natural gas according to claim 5, characterized in that: The automatic connection mechanism (3) also includes a three-way pipe (38), which is fixedly installed on the right side of the base (1). A connecting pipe (37) is fixedly connected to the top of the three-way pipe (38), and the end of the connecting pipe (37) away from the three-way pipe (38) is fixedly connected to the right side of the annular pipe (33).

7. A cryogenic filling gun for liquefied natural gas according to claim 6, characterized in that: An output valve (381) is fixedly connected to one side of the three-way pipe (38), and an input valve (382) is fixedly connected to the other side of the three-way pipe (38). An air source pipe (383) is fixedly connected to the end of the input valve (382) away from the three-way pipe (38). A switch control device (384) is fixedly installed on the outer wall of the three-way pipe (38).

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