Device for coping with refrigerant leakage

Abstract

The utility model relates to a device for coping with refrigerant leakage, comprising a pipe sleeve, the pipe sleeve comprises two pipe walls connected in the circumferential direction, the pipe wall has two sides in the circumferential direction of the pipe sleeve, the pipe wall is butted with the two sides of another pipe wall through two sides, a pipe hole is formed between the two pipe walls, the pipe hole comprises a first hole section, a second hole section and a third hole section connected in the axial direction of the pipe sleeve in turn, a through air release hole is arranged on the side wall of the second hole section, a sealing plug is detachably connected in the air release hole, and the sealing plug can close and open the air release hole. In the first working state, the two sides are pre-connected; in the second working state, the two sides are sealingly connected. Through the device, when refrigerant leakage occurs during maintenance, the refrigerant can be quickly isolated from the external environment, personnel safety is ensured, and further loss is prevented.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a device for dealing with refrigerant leakage. Background Technology

[0002] During the long-term operation of air conditioning systems, refrigerant pipelines and their connecting components inevitably experience material aging, corrosion, and wear. When maintenance is required, especially when welding work is involved, it is usually necessary to recover the refrigerant from the system first. However, when valve components in the air conditioning system malfunction, some refrigerant may become trapped in the pipeline system and cannot be completely discharged. In this situation, if maintenance personnel perform welding work without their knowledge, it can easily cause a sudden leak of the trapped refrigerant. More seriously, if the leaked refrigerant is flammable, the refrigerant concentration in the working environment will continuously increase with the amount of leakage, potentially reaching the flammability limit and posing a significant safety hazard of fire or even explosion. Currently, the industry lacks emergency devices that can quickly establish effective isolation in the event of an accidental refrigerant leak, making it difficult to promptly block the refrigerant from contact with the external environment, failing to effectively protect the personal safety of maintenance personnel, and failing to prevent the further escalation of the leak. Utility Model Content

[0003] Therefore, this utility model provides a device for dealing with refrigerant leaks. When a refrigerant leak occurs during maintenance, it can quickly isolate the refrigerant from the external environment, ensure personnel safety, and prevent further damage.

[0004] To solve the above-mentioned technical problems, this utility model provides a device for dealing with refrigerant leakage, including a pipe sleeve. The pipe sleeve includes two pipe walls connected circumferentially. Each pipe wall has two sides in the circumferential direction of the pipe sleeve. The two sides of the pipe wall are connected to the two sides of the other pipe wall. A pipe hole is formed between the two pipe walls. A through vent hole is provided on the pipe wall. A sealing plug is detachably connected to the vent hole. The sealing plug can close and open the vent hole.

[0005] Furthermore, of the two interlocking sides, one is provided with a first connecting post and the other is provided with a first connecting hole, and the first connecting post and the first connecting hole are inserted together with an interference fit.

[0006] Furthermore, of the two interlocking sides, one is provided with a positioning block and the other with a positioning groove, and the positioning block and the positioning groove are fitted together in a concave-convex manner.

[0007] Furthermore, the side wall of the vent hole is provided with a through threaded hole, and a sealing screw is connected in the threaded hole to close and open the vent hole.

[0008] Furthermore, the vent hole extends radially along the sleeve, and the threaded hole extends axially along the sleeve.

[0009] Furthermore, the sealing screw includes a screw head, a screw section, and a smooth section connected in sequence. The screw section is used to thread the threaded hole, and the smooth section is used to seal the vent hole.

[0010] Furthermore, the pipe hole includes a first hole segment, a second hole segment, and a third hole segment connected sequentially along the axial direction of the pipe sleeve.

[0011] In the first working state, the two sides that are connected to each other are pre-connected, the diameter of the first hole segment and the third hole segment is D1, and the diameter of the second hole segment is D2;

[0012] In the second working state, the two sides that are connected to each other are sealed together, the diameter of the first hole segment and the third hole segment is D3, and the diameter of the second hole segment is D4;

[0013] Among them, D1, D2 and D4 are all greater than the preset aperture, and D3 is equal to the preset aperture;

[0014] Both ends of the pipe wall along the axial direction of the pipe sleeve are detachably connected with fan-shaped annular cover plates. The two fan-shaped annular cover plates at the same end of the two pipe walls enclose the first hole section and the third hole section. The diameters of the first hole section and the third hole section are adjustable.

[0015] Furthermore, in the two annular cover plates at the same end of the two pipe walls, one is provided with a second connecting post and the other is provided with a second connecting hole, and the second connecting post and the second connecting hole are inserted together.

[0016] Furthermore, the annular cover plate includes multiple arc-shaped rings that are detachably connected sequentially along the radial direction of the sleeve.

[0017] Furthermore, the concave side of the pipe wall is provided with a first slot, the concave side of the arc-shaped ring layer is provided with a second slot, and the convex side of the arc-shaped ring layer is provided with a protrusion. The pipe wall and the arc-shaped ring layer are connected to each other by the first slot and the protrusion, and the two arc-shaped ring layers are connected to each other by the second slot and the protrusion.

[0018] Compared with the prior art, the above-mentioned technical solution of this utility model has the following advantages: The device for dealing with refrigerant leakage of this utility model, by setting a pipe hole structure with switchable orifice diameter and a detachable sealing plug, can quickly form a pressure release channel and adjust the pipe diameter when refrigerant leaks, effectively blocking the refrigerant diffusion path, and has the advantage of improving the safety of maintenance operations. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the assembly of the device for dealing with refrigerant leakage in this utility model;

[0021] Figure 2 This is an explosion diagram of the device for dealing with refrigerant leakage in this utility model;

[0022] Figure 3 This is a schematic diagram of the two pipe walls in this utility model;

[0023] Figure 4 This is a schematic diagram of the sealing plug in this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing screw in this utility model;

[0025] Figure 6 This is a schematic diagram of the two fan-shaped annular cover plates in this utility model;

[0026] Figure 7 This is an exploded view of the annular cover plate in this utility model.

[0027] Figure 8 This is a schematic diagram of the refrigerant pipeline before welding in this utility model;

[0028] Figure 9 This is a schematic diagram illustrating the installation process of the device for dealing with refrigerant leakage in this utility model;

[0029] Figure 10 This is a schematic diagram of the device for dealing with refrigerant leakage in the present invention in its first working state;

[0030] Figure 11 This is a schematic diagram of the device for dealing with refrigerant leakage in the present invention in its second working state;

[0031] Figure 12 This is a schematic diagram showing the coordination between the device for dealing with refrigerant leakage and the refrigerant pipeline in this utility model.

[0032] Explanation of reference numerals in the accompanying drawings: 1. Pipe wall; 11. Side; 12. Pipe hole; 121. First hole section; 122. Second hole section; 123. Third hole section; 13. Vent hole; 14. First connecting post; 15. First connecting hole; 16. Positioning block; 17. Positioning groove; 18. Threaded hole; 19. First slot; 2. Sealing plug; 3. Sealing screw; 31. Screw head; 32. Screw section; 33. Smooth section; 4. Fan-shaped annular cover plate; 41. Second connecting post; 42. Second connecting hole; 43. Arc-shaped ring layer; 44. Second slot; 45. Protrusion; 5. Refrigerant pipeline. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example

[0034] See Figures 1 to 12 The image shows an embodiment of the device for dealing with refrigerant leakage provided by this utility model.

[0035] The device for dealing with refrigerant leakage includes a pipe sleeve, which includes two pipe walls 1 connected circumferentially. Each pipe wall 1 has two sides 11 in the circumferential direction of the pipe sleeve. The two sides 11 of the pipe wall 1 are connected to the two sides 11 of the other pipe wall 1. A pipe hole 12 is formed between the two pipe walls 1. The pipe hole 12 includes a first hole segment 121, a second hole segment 122 and a third hole segment 123 connected sequentially along the axial direction of the pipe sleeve. A through vent hole 13 is provided on the side wall of the second hole segment 122. A sealing plug 2 is detachably connected to the vent hole 13. The sealing plug 2 can close and open the vent hole 13.

[0036] In the first working state, the two sides 11 that are connected to each other are pre-connected, the diameter of the first hole segment 121 and the third hole segment 123 is D1, and the diameter of the second hole segment 122 is D2.

[0037] In the second working state, the two sides 11 that are connected to each other are sealed together. The diameter of the first hole section and the third hole section is D3, and the diameter of the second hole section is D4.

[0038] Among them, D1, D2 and D4 are all greater than the preset aperture, and D3 is equal to the preset aperture.

[0039] In the above description, the tube sleeve consists of two semi-circular tube walls 1, with their concave sides facing each other. An adjustable connection structure is provided at the mating edges, allowing for controllable spacing between the tube walls 1. The aforementioned tube hole 12 is formed between the two semi-circular tube walls 1. A vent hole 13 extends through the thickness direction of the tube wall 1, and a removable sealing plug 2 is installed within the vent hole 13, forming a selectively openable and closable gas passage. In the first operating state, the tube walls 1 remain loosely mated, forming a larger diameter tube hole 12, facilitating the sliding positioning of the refrigerant leak detection device along the refrigerant pipeline. In the second operating state, the tube walls 1 are completely sealed, forming a standard diameter tube hole 12, facilitating the sealed contact between the refrigerant leak detection device and the refrigerant pipeline.

[0040] Specifically, before welding, the workers first connect the sleeve to the refrigerant line 5, placing the line in its initial state. If a refrigerant leak is discovered during welding, the pre-connected sleeve can be quickly moved to the leak location. By tightening the pipe wall connection structure, the first section 121 and the third section 123 are tightly fitted against the outer wall of the refrigerant line 5 to form the main sealing zone, while the second section 122 forms an expansion chamber with the refrigerant line 5. The leaking refrigerant is confined within the expansion chamber and can be directionally extracted by connecting to external recovery equipment through the vent 13. This structure ensures the airtightness of the main sealing zone while providing a controllable temporary storage and discharge space for the leaking medium.

[0041] Through the above technical solution, a protection system can be quickly established when refrigerant leakage occurs: the first orifice section 121 and the third orifice section 123 form a mechanical seal to block the diffusion of refrigerant, the second orifice section 122 expands the space to buffer pressure fluctuations, and the vent 13 enables controllable discharge, thereby significantly reducing the instantaneous concentration of combustible gas in the air, effectively avoiding the formation of the explosion threshold, and buying maintenance personnel time for emergency response.

[0042] In this embodiment, one of the two sides 11 that are connected to each other is provided with a first connecting post 14 and the other is provided with a first connecting hole 15. The first connecting post 14 and the first connecting hole 15 are inserted together with an interference fit.

[0043] In the above text, the first connecting post 14 refers to the protruding structure located on the side 11 of the pipe wall 1. It can be implemented using a cylindrical or prismatic structure, with its diameter or cross-sectional dimension slightly larger than the inner diameter of the first connecting hole 15. The first connecting hole 15 refers to the recessed structure corresponding to the first connecting post 14. It can be implemented using a blind hole or through hole structure, with its inner wall forming an interference fit with the first connecting post 14. The interference fit means that radial pressure is generated between the first connecting post 14 and the first connecting hole 15 through the dimensional difference. The interference amount is controlled to ensure the structural stability and sealing performance after insertion.

[0044] Specifically, the first connecting post 14 and the first connecting hole 15 are located at one end of the pipe wall 1 near the first hole segment 121. During the assembly of the sleeve, when the two pipe walls 1 are pre-connected, the first connecting post 14 is partially inserted into the first connecting hole 15; when the two pipe walls 1 are sealed together, the first connecting post 14 is fully inserted into the first connecting hole 15. By pressing the first connecting post 14 into the corresponding first connecting hole 15, the radial pressure generated by the interference fit makes the sides 11 of the two pipe walls 1 fit tightly together. This rigid connection method allows the two pipe walls 1 to quickly change from a pre-connected state to a sealed connection state.

[0045] Through the above technical solution, the interference fit plug structure can quickly and reliably connect the two pipe walls 1 during maintenance, preventing refrigerant from escaping from the side gaps under high pressure.

[0046] In this embodiment, one of the two interlocking sides 11 is provided with a positioning block 16 and the other is provided with a positioning groove 17. The positioning block 16 and the positioning groove 17 are interlocked and fitted together.

[0047] In the above text, the positioning block 16 refers to the protruding structure set on the surface of the side 11, which can be implemented using an irregularly shaped block, and its size matches the positioning groove 17. The positioning groove 17 refers to the recessed structure set on the surface of the other side 11, which can be implemented using a groove whose shape is complementary to that of the positioning block 16. The interlocking structure of the protrusion and recess forms a mechanical constraint through the complementarity of physical shapes, which is used to limit the circumferential or radial displacement of the side 11 during the docking process.

[0048] Specifically, the aforementioned positioning block 16 and positioning groove 17 are located at one end of the pipe wall 1 near the third hole section 123. The positioning block 16 is convex in shape. During the docking process of the pipe sleeve side 11, the positioning block 16 is guided into the positioning groove 17, and axial and radial positioning is achieved through the complementary relationship of their shapes. This structure completes the initial positioning in the pre-connection stage, eliminating the possibility of misalignment between the side 11 and ensuring that the two side 11 are always in the preset relative position.

[0049] Through the above technical solution, the inlay structure of positioning block 16 and positioning groove 17 realizes the self-alignment function in the assembly process, reduces the complexity of operation, and enhances the deformation resistance of the connection part, avoiding the risk of refrigerant leakage caused by mechanical stress.

[0050] In this embodiment, a through threaded hole 18 is provided on the side wall of the vent hole 13, and a sealing screw 3 is connected in the threaded hole 18. The sealing screw 3 closes and opens the vent hole 13.

[0051] In the above text, threaded hole 18 refers to a channel with an internal thread structure machined into the side wall of vent hole 13. This can be achieved using standard thread specifications, such as M6 or M8 threads, formed through turning or tapping processes. The sealing screw 3 refers to an externally threaded fastener that matches threaded hole 18. The threaded connection achieves axial displacement through rotation, thereby controlling the opening and closing of vent hole 13.

[0052] Specifically, when it is necessary to close the vent hole 13, the sealing screw 3 is screwed into the threaded hole 18 and cuts off the vent hole 13 to achieve a seal; when it is necessary to open the vent hole 13, the sealing screw 3 is screwed out in the opposite direction to disengage from the vent hole 13 channel, so that the refrigerant can be discharged through the vent hole 13.

[0053] Through the above technical solutions, the threaded connection structure ensures sealing stability and avoids the risk of refrigerant leakage.

[0054] In this embodiment, the vent hole 13 extends radially along the sleeve, and the threaded hole 18 extends axially along the sleeve.

[0055] In the above text, the radial extension of the vent hole 13 means that the central axis of the hole intersects perpendicularly with the axis of the sleeve. This can be achieved by drilling perpendicular to the outer wall of the sleeve, and is used to directly connect the inside of the sleeve with the external environment. The axial extension of the threaded hole 18 means that the central axis of the hole is parallel to the axis of the sleeve. This can be achieved by tapping along the same axis as the sleeve, and is used to provide the installation path for the sealing screw 3.

[0056] Through the above technical solution, the orthogonally arranged vent holes 13 and threaded holes 18 structure facilitates the sealing screw 3 to close and open the vent holes 13.

[0057] In this embodiment, the sealing screw 3 includes a screw head 31, a screw section 32, and a smooth section 33 connected in sequence. The screw section 32 is used to thread the threaded hole 18, and the smooth section 33 is used to seal the vent hole 13.

[0058] In the above text, screw head 31 refers to the part at the tip of the sealing screw that forms the force-applying structure. It can be implemented using a hexagonal, cross-groove, or slotted design to withstand rotational torque input. Screw section 32 refers to a cylindrical structure with external threads, which can be implemented using metric or pipe threads to form a helical fit with the threaded hole 18. Plain section 33 refers to a cylindrical structure without threads, which can be precision ground to form an interference fit sealing contact surface with the inner wall of the vent hole 13.

[0059] Specifically, when the sealing screw 3 is screwed into the threaded hole 18, the screw section 32 generates axial displacement through thread engagement, driving the smooth section 33 to enter the vent hole 13 radially. When it is necessary to open the vent hole 13, the screw head 31 is rotated in the opposite direction, causing the smooth section 33 to completely exit the vent hole 13. At this time, the screw section 32 still maintains thread engagement with the threaded hole 18, preventing the sealing screw 3 from falling off entirely. This structure decouples the fastening and sealing functions through a split design; the screw section 32 only undertakes the axial positioning function, while the sealing function is undertaken by the smooth section 33.

[0060] Through the above technical solution, the threadless contact between the smooth rod section 33 and the vent hole 13 allows the vent hole 13 to be better sealed.

[0061] In this embodiment, the pipe wall 1 is detachably connected to both ends of the sleeve along the axial direction of the sleeve with a fan-shaped annular cover plate 4. The two fan-shaped annular cover plates 4 at the same end of the two pipe walls 1 enclose the first hole section 121 and the third hole section 123. The hole diameters of the first hole section 121 and the third hole section 123 are adjustable.

[0062] In the above text, the fan-shaped annular cover plate 4 refers to a plate-shaped component used to dynamically adjust the flow cross section of the pipe hole 12 to adapt to refrigerant pipes 5 with different outer diameters. The fan-shaped annular cover plate 4 is a fan-shaped ring, and two fan-shaped annular cover plates 4 enclosed together form an annular structure. The inner hole of the annular structure is the first hole section 121 and the third hole section 123.

[0063] Specifically, the operator can adjust the annular cover plate 4 according to the outer diameter of the refrigerant pipe 5, and then adjust the diameter of the first hole section 121 and the third hole section 123 to ensure that the refrigerant pipe 5 can be sealed when the pipe sleeve is in the second working state.

[0064] Through the above technical solution, the diameters of the first hole section 121 and the third hole section 123 can be adjusted according to the outer diameter of the refrigerant pipe 5, thereby adapting to the maintenance and welding of refrigerant pipes 5 with different diameters.

[0065] In this embodiment, one of the two annular cover plates 4 at the same end of the two pipe walls 1 is provided with a second connecting post 41 and the other is provided with a second connecting hole 42. The second connecting post 41 and the second connecting hole 42 are inserted together.

[0066] In the above text, the second connecting post 41 and the second connecting hole 42 are connected in the same way as the first connecting post 14 and the first connecting hole 15 mentioned earlier. When the two pipe walls 1 are pre-connected, the second connecting post 41 is partially inserted into the second connecting hole 42. When the two pipe walls 1 are sealed together, the second connecting post 41 is fully inserted into the second connecting hole 42. This will not be described in detail here.

[0067] In this embodiment, the aforementioned annular cover plate 4 includes a plurality of arc-shaped rings 43 that are detachably connected in sequence along the radial direction of the aforementioned sleeve.

[0068] In the above text, multiple arc-shaped rings 43 are concentrically arranged with gradually increasing outer diameters, and the multiple arc-shaped rings 43 form a fan-shaped annular cover plate 4.

[0069] Specifically, when the outer diameter of the refrigerant pipe 5 is large, one or more inner arc-shaped rings 43 are disassembled until the diameters of the first hole section 121 and the third hole section 123 match the outer diameter of the refrigerant pipe 5.

[0070] By using the above technical solution, the fan-shaped annular cover plate 4 is configured as a multi-ringed arc layer 43, thereby achieving adjustable radius size of the fan-shaped annular cover plate 4.

[0071] In this embodiment, the concave side of the pipe wall 1 is provided with a first slot 19, the concave side of the arc-shaped ring layer 43 is provided with a second slot 44, and the convex side of the arc-shaped ring layer 43 is provided with a protrusion 45. The pipe wall 1 and the arc-shaped ring layer 43 are connected to each other by the first slot 19 and the protrusion 45, and the two arc-shaped ring layers 43 are connected to each other by the second slot 44 and the protrusion 45.

[0072] In the above text, the first slot 19 refers to the groove structure circumferentially provided along the inner wall of the first hole segment 121 and the third hole segment 123, the second slot 44 refers to the groove structure circumferentially provided along the inner concave side of the arc-shaped ring layer 43, and the protrusion 45 refers to the protruding ridge circumferentially provided along the outer convex side of the arc-shaped ring layer 43.

[0073] Specifically, the flow cross-sectional area of ​​the first hole section 121 and the third hole section 123 can be quickly adjusted by using the fan-shaped annular cover plate 4 and the arc-shaped ring layer 43.

[0074] Through the above technical solution, the matching structure of the slot and the protrusion not only ensures the sealing reliability during the adjustment process, but also makes the connection and disassembly relatively quick.

[0075] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A device for dealing with refrigerant leakage, characterized in that, The device includes a sleeve comprising two circumferentially connected pipe walls, each pipe wall having two sides in the circumferential direction of the sleeve. Each pipe wall abuts against two sides of another pipe wall through its two sides, forming a pipe hole between the two pipe walls. Each pipe wall is provided with a through vent hole, and a sealing plug is detachably connected to the vent hole, the sealing plug being able to close and open the vent hole.

2. The device for dealing with refrigerant leakage according to claim 1, characterized in that, Of the two sides that are connected to each other, one side is provided with a first connecting post and the other side is provided with a first connecting hole, and the first connecting post and the first connecting hole are inserted together with an interference fit.

3. The device for dealing with refrigerant leakage according to claim 1, characterized in that, Of the two interlocking sides, one is provided with a positioning block and the other with a positioning groove, and the positioning block and the positioning groove are fitted together in a concave-convex manner.

4. The device for dealing with refrigerant leakage according to claim 1, characterized in that, The vent hole has a through threaded hole on its side wall, and a sealing screw is connected in the threaded hole to close and open the vent hole.

5. The device for dealing with refrigerant leakage according to claim 4, characterized in that, The vent hole extends radially along the sleeve, and the threaded hole extends axially along the sleeve.

6. The device for dealing with refrigerant leakage according to claim 5, characterized in that, The sealing screw includes a screw head, a screw section, and a smooth section connected in sequence. The screw section is used to thread the threaded hole, and the smooth section is used to seal the vent hole.

7. The device for dealing with refrigerant leakage according to claim 1, characterized in that, The pipe hole includes a first hole section, a second hole section, and a third hole section connected sequentially along the axial direction of the pipe sleeve. In the first working state, the two sides that are connected to each other are pre-connected, the diameter of the first hole segment and the third hole segment is D1, and the diameter of the second hole segment is D2; In the second working state, the two sides that are connected to each other are sealed together, the diameter of the first hole segment and the third hole segment is D3, and the diameter of the second hole segment is D4; Among them, D1, D2, and D4 are all greater than the preset aperture, and D3 is equal to the preset aperture; Both ends of the pipe wall along the axial direction of the pipe sleeve are detachably connected with fan-shaped annular cover plates. The two fan-shaped annular cover plates at the same end of the two pipe walls enclose the first hole section and the third hole section. The diameters of the first hole section and the third hole section are adjustable.

8. The device for dealing with refrigerant leakage according to claim 7, characterized in that, Of the two annular cover plates at the same end of the two pipe walls, one is provided with a second connecting post and the other is provided with a second connecting hole, and the second connecting post and the second connecting hole are inserted together.

9. The device for dealing with refrigerant leakage according to claim 7, characterized in that, The fan-shaped annular cover plate includes multiple arc-shaped rings that are detachably connected sequentially along the radial direction of the sleeve.

10. The device for dealing with refrigerant leakage according to claim 9, characterized in that, The concave side of the pipe wall is provided with a first slot, the concave side of the arc-shaped ring layer is provided with a second slot, and the convex side of the arc-shaped ring layer is provided with a protrusion. The pipe wall and the arc-shaped ring layer are connected to each other by the first slot and the protrusion, and the two arc-shaped ring layers are connected to each other by the second slot and the protrusion.

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