A high-strength anhydrous hydrogen fluoride cylinder filling line

Abstract

This invention discloses a high-strength anhydrous hydrogen fluoride cylinder filling line, relating to the field of cylinder filling. It includes a sealed cylinder and an angle valve assembled together. The angle valve is installed at the top opening of the sealed cylinder. An alignment member is installed on the outer wall of the filling port of the angle valve, and a filling line is detachably connected inside the filling port of the angle valve. The filling line, the angle valve, and the sealed cylinder are interconnected. This invention reduces the time required for manual adjustment of the filling line position, improving the efficiency of installing the filling line before filling. Simultaneously, it ensures the tightness of the connection between the insert and the alignment member, preventing slippage of the insert. It enhances the stability of the filling line during the flow of anhydrous hydrogen fluoride, providing protection for the filling line. This method of installing and removing the insert facilitates manual control of the connection between the insert, filling pipe, alignment member, and filling port, simplifying the installation and disassembly steps and improving the portability for operators.

Description

Technical Field

[0001] This invention relates to the field of cylinder filling, and in particular to a high-strength anhydrous hydrogen fluoride cylinder filling line. Background Technology

[0002] Anhydrous hydrogen fluoride is a widely used chemical product. It is a colorless, fuming liquid containing over 99% hydrofluoric acid, which readily vaporizes under reduced pressure or high temperature. Anhydrous hydrogen fluoride is mainly used in the manufacture of fluorinated refrigerants, fluorinated cleaning agents, fluorinated foaming agents, aluminum fluoride, cryolite, secondary fluorides, and fluorinated polymers. It can also be used directly as a solvent for rare metals such as cobalt and tantalum, and as a catalyst in oil refining alkylation. It is a fundamental raw material for fluorinated products in military technology, daily life, pharmaceuticals, and pesticide formulations.

[0003] To ensure the safety of anhydrous hydrogen fluoride during transportation and storage, it is packaged in specially made steel cylinders that are required to withstand a pressure of 196×10⁴ Pa and are regularly inspected in accordance with national regulations.

[0004] During the filling process of anhydrous hydrogen fluoride cylinders, the angle valve installed at the cylinder opening needs to be opened, and then the filling line is inserted into the angle valve to connect with the angle valve and the cylinder cavity. Subsequently, anhydrous hydrogen fluoride can be supplied to the cylinder through the operating unit.

[0005] During the filling process, the filling line and filling port are usually connected by bolts. Multiple screws are then tightened with a wrench to secure the filling line to the insertion valve, allowing the flow of anhydrous hydrogen fluoride. However, during the insertion and removal of the filling line, the position of the filling line and filling port needs to be manually adjusted to align with the threaded holes. This requires repeated wrench tightening to complete the assembly and disassembly of the screws. If the wrench is not operated correctly, resulting in uneven tightening of the screws, the pipeline may be affected by the pressure impact of the rapidly flowing hydrogen fluoride in the wastewater, causing misalignment and instability, further affecting the tightness of the connection between the pipeline and the angle valve. Summary of the Invention

[0006] To address the aforementioned issues, this application provides a high-strength anhydrous hydrogen fluoride cylinder filling line.

[0007] To achieve the above objectives, this application provides the following technical solution: a high-strength anhydrous hydrogen fluoride cylinder filling line, comprising a sealed cylinder and an angle valve assembled together, wherein the angle valve is installed at the upper opening of the sealed cylinder, an alignment member is installed on the outer wall of the filling port of the angle valve, and a filling line is detachably connected inside the filling port of the angle valve, wherein the filling line, the angle valve and the sealed cylinder are interconnected.

[0008] The outer wall fixing insert of the filling line is aligned with the alignment member when the filling line is installed on the filling port of the angle valve.

[0009] Preferably, the alignment member includes an outer ring, the surface of which has a pair of channels that mate with the insert.

[0010] Each pair of channels is provided with a swingable limiting strip on its outer side. A positioning shaft passes through the center of the limiting strip. An extension ring is fixed to the side of the positioning shaft and is fixed to the outer wall of the outer sleeve ring.

[0011] Preferably, the filling line includes an input pipe, and a positioning connector is fixed at the end of the input pipe. When the filling line is installed on the filling port of the angle valve, the positioning connector abuts against the inner wall of the filling port, and the insert is installed on the outer wall of the positioning connector.

[0012] Preferably, the insert includes an inner fixing tube and an outer docking ring, and the outer docking ring is fixed to the outer wall of the inner fixing tube by a round rod.

[0013] The outer mating ring has a through hole on its surface, and a detachable sliding ball frame is provided inside the through hole. The limiting strip has an arc-shaped groove on its surface that matches the sliding ball frame. When the insert and the alignment member are in contact, the limiting strip abuts against the sliding ball frame.

[0014] Preferably, the outer wall of the inner fixing tube is fixed with a barrier layer, and the sliding ball frame extends to the rear end of the barrier layer.

[0015] A bent plate is fixed to the inner wall of the through hole, and a spring sheet is fixed to the side of the bent plate. The spring sheet is fixed to the surface of the sliding ball frame. When the limiting strip abuts against the sliding ball frame, the spring sheet is stretched, and the sliding ball frame slides close to the barrier layer on the inner wall of the through hole. The barrier layer abuts against the end of the filling port of the angle valve.

[0016] Preferably, the alignment member further includes a plurality of balance blocks fixed to the outer wall of the outer sleeve ring, and a compression spring is fixed to the surface of the balance block.

[0017] The compression spring is fixed to the opposite side of the limiting bar and the balance block. When the limiting bar is pressed, the compression spring is squeezed and contracted until the limiting bar is disengaged from the sliding ball frame.

[0018] Preferably, a guide rod is fixed to the surface of the balance block, and the guide rod passes through the limiting strip.

[0019] Preferably, the outer surface of the inner fixing tube is fixedly connected with an anti-slip block, and the surface of the anti-slip block is provided with multiple annular grooves.

[0020] In summary, the technical effects and advantages of this invention are as follows:

[0021] This invention, through the connection between the insert and the alignment member, and by controlling the movement of the internal limiting strip of the alignment member, can clamp and position the insert, thereby achieving rapid positioning and assembly between the filling line and the angle valve filling port. This reduces the time required for manual adjustment of the filling line position and improves the efficiency of installing the filling line before filling. Simultaneously, it ensures the tightness of the connection between the insert and the alignment member, preventing slippage of the insert. It also enhances the stability of the filling line during the flow of anhydrous hydrogen fluoride, providing protection for the filling line. This method of installing and removing the insert facilitates manual control of the connection between the insert, filling pipe, alignment member, and filling port, simplifying the installation and disassembly steps and improving the portability for operators. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram showing the position and structure of the angle valve, alignment member, filling line, and insert of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the connection structure between the angle valve and the alignment component of the present invention.

[0026] Figure 4 This is a schematic diagram of the connection structure between the filling line and the insert of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the embedded part of the present invention after partial cross-section.

[0028] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle.

[0029] Figure 7 This is a schematic diagram of the alignment component structure of the present invention.

[0030] In the diagram: 1. Sealed steel cylinder; 2. Angle valve; 3. Alignment component; 4. Filling line; 5. Embedded component; 31. Outer ring; 32. Restriction strip; 33. Extension ring; 34. Balance block; 35. Compression spring; 36. Guide rod; 41. Input pipe; 42. Positioning joint; 51. Inner fixed tube; 52. Outer mating ring; 53. Sliding ball frame; 54. Barrier layer; 55. Bend plate; 56. Spring; 57. Anti-slip block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Reference Figure 1-4 The high-strength anhydrous hydrogen fluoride cylinder filling line shown includes a sealed cylinder 1 and an angle valve 2 assembled together. The angle valve 2 is installed at the upper opening of the sealed cylinder 1. An alignment member 3 is installed on the outer wall of the filling port of the angle valve 2, and a filling line 4 is detachably connected inside the filling port of the angle valve 2. The filling line 4, the angle valve 2, and the sealed cylinder 1 are interconnected. When the filling line 4 is installed on the angle valve 2, the operating unit can be turned on to supply anhydrous hydrogen fluoride to the sealed cylinder 1.

[0033] The outer wall of the filling line 4 is fixed with an insert 5. When the filling line 4 is installed on the filling port of the angle valve 2, the insert 5 is aligned with the alignment member 3. Through the alignment connection between the insert 5 and the alignment member 3, the filling line 4 can be installed without manually tightening a wrench, which improves the efficiency of installing the filling line 4 before filling, ensures the stability of the filling line 4 during the flow of anhydrous hydrogen fluoride, and prevents the filling line from falling off.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the alignment member 3 includes an outer ring 31, and the surface of the outer ring 31 has a pair of channels that are connected to the insert member 5.

[0035] Each pair of channels has a swingable restraint bar 32 on its outer side. A positioning shaft passes through the center of each restraint bar 32, and an extension ring 33 is fixed to the side of the positioning shaft. The extension ring 33 is fixed to the outer wall of the outer sleeve ring 31. Pressing controls the swing of the pair of restraint bars 32, which causes the restraint bars 32 to swing outside the positioning shaft, which is located in the middle of the restraint bar 32.

[0036] By controlling the swing of the limiting bar 32, the connection between the positioning member 3 and the insert 5 can be controlled, thus completing the rapid positioning assembly and disassembly between the filling line 4 and the filling port of the angle valve 2, reducing the time required for manual position adjustment.

[0037] like Figure 4 , Figure 5 As shown, the filling line 4 includes an input pipe 41, and a positioning connector 42 is fixed at the end of the input pipe 41. When the filling line 4 is installed on the filling port of the angle valve 2, the positioning connector 42 abuts against the inner wall of the filling port, and the insert 5 is installed on the outer wall of the positioning connector 42.

[0038] The positioning connector 42 is made of stainless steel to improve its hardness and avoid the squeezing and deformation that occur during its embedding into the inner wall of the filling port, so as to facilitate the smooth sliding of the positioning connector 42. After the positioning connector 42 slides into the inner side of the filling port, the insert 5 contacts the alignment member 3 as the positioning connector 42 slides.

[0039] Example 2: As Figure 4 , Figure 5 and Figure 6 As shown, the insert 5 includes an inner fixing tube 51 and an outer docking ring 52. The outer wall of the inner fixing tube 51 is fixed with the outer docking ring 52 by a round rod.

[0040] The outer mating ring 52 has a through hole on its surface, and a detachable sliding ball holder 53 is provided inside the through hole. The surface of the limiting strip 32 has an arc-shaped groove that matches the sliding ball holder 53. When the insert 5 and the aligning member 3 are aligned, the limiting strip 32 abuts against the sliding ball holder 53. The sliding ball holder 53 is locked and limited by the limiting strip 32, and further, the outer mating ring 52 is positioned.

[0041] Since the inner fixing tube 51 and the outer mating ring 52 are in a fixed state, as the sliding ball frame 53 is locked in place by the limiting strip 32, the entire insert 5 remains stable inside the alignment member 3, effectively preventing the insert 5 from shifting or falling off. Because the limiting strip 32 abuts against the sliding ball frame 53, it effectively ensures the tightness of the connection between the insert 5 and the alignment member 3, preventing slippage of the insert 5 and improving its stability.

[0042] like Figure 5 , Figure 6 As shown, a barrier layer 54 is fixed to the outer wall of the inner fixed tube 51, and the sliding ball frame 53 extends to the rear end of the barrier layer 54.

[0043] A bent plate 55 is fixed to the inner wall of the through hole, and a spring piece 56 is fixed to the side of the bent plate 55. The spring piece 56 is fixed to the surface of the sliding ball frame 53. When the limiting strip 32 abuts against the sliding ball frame 53, the spring piece 56 is stretched, and the sliding ball frame 53 slides close to the barrier layer 54 on the inner wall of the through hole. When the limiting strip 32 presses against the sliding ball frame 53, the sliding ball frame 53 slides and squeezes the barrier layer 54, and the barrier layer 54 presses against the end of the filling port of the angle valve 2.

[0044] The barrier layer 54 seals the gap between the filling port and the filling line 4, effectively preventing the overflow of anhydrous hydrogen fluoride from the filling port of the angle valve 2. When the insert 5 is disconnected from the alignment member 3, the spring 56 resets, the sliding ball holder 53 releases its pressure on the barrier layer 54, and the barrier layer 54 is gradually released so that the insert 5 can be quickly pulled out as a whole.

[0045] like Figure 7 As shown, the alignment member 3 also includes multiple balance blocks 34 fixed to the outer wall of the outer sleeve ring 31, and compression springs 35 are fixed to the surface of the balance blocks 34. The purpose of providing compression springs 35 is to ensure that the limiting strip 32 can maintain a tight connection with the sliding ball frame 53 under its pressure.

[0046] The compression spring 35 is fixed to the opposite side of the limiting bar 32 and the balance block 34. When the limiting bar 32 is pressed, the compression spring 35 is compressed and contracted until the limiting bar 32 is disengaged from the sliding ball frame 53, allowing the insert 5 to be easily pulled out. This method of installing and removing the insert 5 facilitates manual operation and control of the connection between the insert 5 and the alignment member 3, simplifies the installation and disassembly steps, and improves the portability for operators.

[0047] like Figure 7 As shown, a guide rod 36 is fixed to the surface of the balance block 34, and the guide rod 36 passes through the limiting strip 32. A through hole adapted to the guide rod 36 is provided on the surface of the limiting strip 32. The diameter of the through hole is larger than that of the guide rod 36, so that the end of the limiting strip 32 can swing smoothly outside the guide rod 36. The purpose of providing the guide rod 36 is to limit the movement trajectory of the end of the limiting strip 32, preventing the limiting strip 32 from shifting under the action of the compression spring 35, and improving the accuracy of manually pressing the limiting strip 32.

[0048] like Figure 5 As shown, an anti-slip block 57 is fixedly connected to the outer surface of the inner fixing tube 51. The surface of the anti-slip block 57 has multiple annular grooves. The anti-slip block 57 is made of silicone, and the multiple grooves on its surface make it easy to hold and effectively prevent slippage during the movement of the manual control insert 5 driving the filling line 4.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-strength anhydrous hydrogen fluoride cylinder filling line comprising a sealing cylinder (1) and a corner valve (2) installed in combination, the corner valve (2) being installed at the upper opening of the sealing cylinder (1), characterized in that: The outer wall of the filling port of the angle valve (2) is provided with an alignment part (3), and the filling port of the angle valve (2) is detachably connected with a filling line (4), the filling line (4), the angle valve (2) and the sealed steel cylinder (1) are communicated with each other; The outer wall of the filling line (4) is fixedly provided with an embedded part (5), when the filling line (4) is installed on the filling port of the angle valve (2), the embedded part (5) is in abutment with the alignment part (3); The alignment part (3) comprises an outer sleeve ring (31), a pair of channels in abutment with the embedded part (5) are formed in the surface of the outer sleeve ring (31); The outer side of the pair of channels is provided with an oscillatable limiting strip (32), a positioning shaft is penetrated through the center of the limiting strip (32), an extension ring (33) is fixedly arranged on the side surface of the positioning shaft, and the extension ring (33) is fixed to the outer wall of the outer sleeve ring (31); The embedded part (5) comprises an inner fixed tube (51) and an outer abutment ring (52), and the outer wall of the inner fixed tube (51) is fixedly provided with the outer abutment ring (52) through a round rod; A through hole is formed in the surface of the outer abutment ring (52), a detachable sliding ball frame (53) is arranged on the inner side of the through hole, an arc-shaped groove matched with the sliding ball frame (53) is formed in the surface of the limiting strip (32), and the limiting strip (32) is in abutment with the sliding ball frame (53) when the embedded part (5) is in abutment with the alignment part (3); The outer wall of the inner fixed tube (51) is fixedly provided with a barrier layer (54), and the sliding ball frame (53) extends to the rear end of the barrier layer (54); A bent plate (55) is fixedly arranged on the inner wall of the through hole, a spring sheet (56) is fixedly arranged on the side surface of the bent plate (55), the spring sheet (56) is fixed to the surface of the sliding ball frame (53), the spring sheet (56) is stretched when the limiting strip (32) is in abutment with the sliding ball frame (53), the sliding ball frame (53) slides on the inner wall of the through hole and approaches the barrier layer (54), and the barrier layer (54) is in abutment with the end portion of the filling port of the angle valve (2); The alignment part (3) further comprises a plurality of balance blocks (34) fixed to the outer wall of the outer sleeve ring (31), and a compression spring (35) is fixed to the surface of each balance block (34); The compression spring (35) is fixed to the opposite side of the limiting strip (32) and the balance block (34), the limiting strip (32) is pressed, the compression spring (35) is extruded and shrunk, and the limiting strip (32) is separated from the sliding ball frame (53).

2. The high strength anhydrous hydrogen fluoride cylinder filling line of claim 1, characterized in that: The filling line (4) comprises an input pipeline (41), and a positioning connector (42) is fixed to the end portion of the input pipeline (41), the positioning connector (42) is in abutment with the inner wall of the filling port when the filling line (4) is installed on the filling port of the angle valve (2), and the embedded part (5) is installed on the outer wall of the positioning connector (42).

3. The high strength anhydrous hydrogen fluoride cylinder filling line of claim 1, wherein: A guide rod (36) is fixed to the surface of the balance block (34), and the guide rod (36) penetrates through the limiting strip (32).

4. The high strength anhydrous hydrogen fluoride cylinder filling line of claim 1, wherein: The inner fixing tube (51) is fixedly connected with anti-skid blocks (57) on the outer surface, and the anti-skid blocks (57) are provided with a plurality of annular grooves on the surface.

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