A pipe connection structure for a chiller

Abstract

The present invention belongs to the field of chillers, and specifically is a pipe connection structure for a chiller, comprising a first connecting pipe; a second connecting pipe is arranged at the front end of the first connecting pipe, and the rear end of the second connecting pipe is inserted into the interior of the first connecting pipe, and a connecting mechanism is arranged between the first connecting pipe and the second connecting pipe; the connecting mechanism is used to assemble and seal the first connecting pipe and the second connecting pipe, and the connecting mechanism comprises a positioning and fixing component, a rotation release component and a leak-proof sealing component, the positioning and fixing component is arranged between the outer side of the second connecting pipe and the inner wall of the first connecting pipe, the rotation release component is arranged at the front end of the positioning and fixing component, and the leak-proof sealing component is arranged at the rear end of the positioning and fixing component; through the structural design of the connecting mechanism, the functions of quick connection, long-term use leakage prevention, and easy disassembly and assembly for convenient inspection and maintenance are realized.

Description

Technical Field

[0001] The invention relates to the field of water chillers, in particular to a pipe fitting connection structure of a water chiller. Background Art

[0002] A chiller is a device commonly used in industrial refrigeration and temperature regulation in large venues. It is mainly composed of a compressor, an evaporator, a condenser and some metering devices. It achieves the refrigeration effect through a vapor compression refrigeration cycle and transports the refrigerant to the place where cooling is required through pipes.

[0003] The existing pipe connection structure of the chiller can be specifically referred to the patent document with publication number CN203348773U, which discloses in detail a pipe connection structure for the chiller, which structure includes an operating pipe and a water pipe, the operating pipe is connected to the water pipe, and the outer pipe walls of the operating pipe and the water pipe are provided with locking grooves. The pipe connection structure also includes a sealing ring for sealing the operating pipe and the water pipe, and a clamping ring for connecting the operating pipe and the water pipe, and both side ends of the clamping ring extend inwardly and are provided with annular locking ridges that match the locking grooves. The utility model provides a pipe connection structure for a chiller that is easy to install, simple, and has reliable connection.

[0004] Although the above-mentioned pipe connection structure can be used to conveniently assemble pipes, the sealing performance after assembly is poor. After long-term use, it is easy to leak due to temperature changes. In addition, during the assembly process, it is necessary to manually install a clamp to fix the two sets of pipes. If the installation is not in place, the connection is likely to be loose. Therefore, a pipe connection structure for a chiller is proposed to address the above problems. Summary of the invention

[0005] In order to solve the problem that the existing pipe connection structure has poor sealing performance after assembly and is prone to leakage due to temperature changes after long-term use, and that during the assembly process, a clamping ring needs to be manually installed to fix the two sets of pipes, and if it is not installed properly, a loose connection may easily occur, the present invention proposes a pipe connection structure for a chiller.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a pipe connection structure of a chiller according to the present invention comprises a first connecting pipe; a second connecting pipe is arranged at the front end of the first connecting pipe, a rear end of the second connecting pipe is inserted into the inside of the first connecting pipe, and a connecting mechanism is arranged between the first connecting pipe and the second connecting pipe;

[0007] The connecting mechanism is used to assemble and seal the first connecting tube and the second connecting tube, and the connecting mechanism includes a positioning and fixing component, a rotation release component and a leakage-proof sealing component. The positioning and fixing component is arranged between the outer side of the second connecting tube and the inner wall of the first connecting tube, the rotation release component is arranged at the front end of the positioning and fixing component, and the leakage-proof sealing component is arranged at the rear end of the positioning and fixing component.

[0008] Preferably, the positioning and fixing assembly includes a positioning block, which is fixedly connected to the inner wall of the first connecting tube, and a positioning groove is provided on the outer side of the second connecting tube near one end of the first connecting tube, and a storage cavity is provided inside the positioning block, and a first spring is provided inside the storage cavity, and a fixing block is also slidably connected inside the storage cavity, and the fixing block is engaged with the fixing groove, and the fixing groove is provided on the outer side of the second connecting tube.

[0009] Preferably, one end of the first spring close to the fixing block is fixedly connected to the fixing block, and one end of the first spring away from the fixing block is fixedly connected to the inner wall of the storage cavity.

[0010] Preferably, both the front and rear sides of the fixing block away from the end of the first spring are provided with inclined surfaces, and the inclination angle of the inclined surface provided on the front side of the fixing block is greater than the inclination angle of the inclined surface provided on the rear side of the fixing block.

[0011] Preferably, a sliding block is fixedly connected to the rear side of the fixing block close to one end of the first spring, and the sliding block is slidably connected to the inside of the sliding groove, and the sliding groove is opened on the rear side of the storage cavity.

[0012] Preferably, the rotation release assembly includes a push block, the rear end of the push block is slidably connected to the inside of the fixed groove, and the front end of the push block extends to the inside of the push cavity, the front end of the push block is provided with an inclined surface, the push cavity is provided on a rotating ring, the rotating ring is sleeved on the outside of the second connecting tube, a sliding groove is provided on the outside of the push block, a guide rod is fixedly connected to the inside of the sliding groove, a sliding block is slidably connected to the outside of the guide rod, and a second spring is wound around the outside of the guide rod, and the sliding block is fixedly connected to the inner wall of the fixed groove.

[0013] Preferably, the rear end of the second spring is fixedly connected to the sliding block, and the front end of the second spring is fixedly connected to the inner wall of the sliding groove.

[0014] Preferably, a movable block is fixedly connected to the inner wall of the rotating ring, and the movable block is slidably connected to the inside of the movable groove, and the movable groove is opened on the outside of the second connecting pipe.

[0015] Preferably, the leak-proof sealing assembly includes a sealing ring, which is glued to the outer side of the rear end of the second connecting tube and is made of silicone rubber. An isolation membrane is fixedly connected to the inner wall of the first connecting tube near the front end, and a leak-proof ring is fixedly connected to the rear side of the isolation membrane.

[0016] Preferably, the plugging ring is water-soluble polyvinyl alcohol, and the isolation membrane is a water-soluble polyurethane plugging agent.

[0017] The present invention is beneficial in that:

[0018] 1. The present invention realizes the functions of quick connection, long-term anti-leakage and easy disassembly and assembly for convenient inspection and maintenance through the structural design of the connection mechanism, which solves the problem that the existing pipe connection structure has poor sealing after assembly and is prone to leakage due to temperature changes after long-term use, and the clamping ring needs to be manually installed to fix the two groups of pipes during the assembly process. If the installation is not in place, the connection is likely to be loose, thereby improving the efficiency of the installation of the pipeline of the chiller;

[0019] 2. The present invention realizes the function of facilitating the assembly of the first connecting tube and the second connecting tube through the structural design of the fixing assembly. When assembling the first connecting tube and the second connecting tube, no other tools or connectors are needed. It is only necessary to align the positioning block fixedly connected on the inner wall of the first connecting tube with the positioning groove provided on the second connecting tube, and then insert the second connecting tube into the interior of the first connecting tube until it cannot be further inserted, so that the first connecting tube and the second connecting tube can be connected, thereby improving the efficiency of assembling the pipe fittings and avoiding the situation that the pipe fittings are not tightly connected due to improper operation.

[0020] 3. The present invention realizes the function of conveniently releasing the connection between the first connecting pipe and the second connecting pipe to inspect the inside of the first connecting pipe and the second connecting pipe through the structural design of the rotating release component. If the existing pipe fittings are connected by welding, the inner wall of the pipe cannot be regularly inspected after the connection. The chiller needs to regularly inspect the pipeline during long-term operation to avoid scaling and clogging of the inner wall of the pipeline. The structural design of the rotating release component can conveniently separate the first connecting pipe from the second connecting pipe, thereby inspecting the inner wall of the first connecting pipe and the second connecting pipe to avoid scaling and clogging of the pipeline.

[0021] 4. The present invention seals the connection between the first connecting tube and the second connecting tube through the structural design of the sealing ring in the leak-proof sealing component. If the first connecting tube and the second connecting tube leak at the joint position due to aging of the sealing ring during long-term use, the leaking water will first contact the plugging ring made of water-soluble polyvinyl alcohol. At this time, the plugging ring will be continuously dissolved, removing the blocking of the isolation membrane so that the isolation membrane is directly in contact with water. The water contacts the isolation membrane made of water-soluble polyurethane plugging agent, causing the isolation membrane to disperse, emulsify, and foam by itself, and immediately undergoes a chemical reaction to form an impermeable elastic colloidal solid to block the water flow, thereby preventing the connection between the first connecting tube and the second connecting tube from leaking during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of a side cross-sectional three-dimensional structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0027] Figure 5 It is a schematic diagram of a front cross-sectional three-dimensional structure of the present invention;

[0028] Figure 6 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0029] Figure 7 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0030] In the figure: 1. first connecting tube; 2. second connecting tube; 31. positioning block; 32. positioning groove; 33. storage chamber; 34. first spring; 35. fixed block; 36. fixed groove; 37. slider; 38. slide groove; 39. push block; 40. push chamber; 41. rotating ring; 42. slide groove; 43. guide rod; 44. slide block; 45. second spring; 46. movable block; 47. movable groove; 48. sealing ring; 49. isolation membrane; 50. plugging ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 7 As shown, a pipe connection structure of a chiller comprises a first connection pipe 1; a second connection pipe 2 is arranged at the front end of the first connection pipe 1, and the rear end of the second connection pipe 2 is inserted into the interior of the first connection pipe 1, and a connection mechanism is arranged between the first connection pipe 1 and the second connection pipe 2; the connection mechanism is used to assemble and seal the first connection pipe 1 and the second connection pipe 2, and the connection mechanism comprises a positioning and fixing component, a rotation release component and a leakage-proof sealing component, the positioning and fixing component is arranged between the outer side of the second connection pipe 2 and the inner wall of the first connection pipe 1, the rotation release component is arranged at the front end of the positioning and fixing component, and the leakage-proof sealing component is arranged at the rear end of the positioning and fixing component; through the structural design of the connection mechanism, the functions of fast connection, long-term anti-leakage and easy disassembly and assembly for convenient inspection and maintenance are realized, and the problem that the existing pipe connection structure has poor sealing after assembly and is prone to leakage due to temperature changes after long-term use is solved, and the clamping ring needs to be manually installed to fix the two groups of pipes during the assembly process. If the installation is not in place, the connection is not tight.

[0034] Furthermore, the positioning and fixing assembly includes a positioning block 31, which is fixedly connected to the inner wall of the first connecting tube 1, and a positioning groove 32 is provided on the outer side of the second connecting tube 2 near one end of the first connecting tube 1, and a receiving chamber 33 is provided inside the positioning block 31, and a first spring 34 is provided inside the receiving chamber 33, and a fixing block 35 is also slidably connected inside the receiving chamber 33, and the fixing block 35 is engaged with the fixing groove 36, and the fixing groove 36 is provided on the outer side of the second connecting tube 2, and one end of the first spring 34 near the fixing block 35 is fixedly connected to the fixing block 35, and one end of the first spring 34 away from the fixing block 35 is fixedly connected to the inner wall of the receiving chamber 33, and the fixing block 35 is away from the front and rear sides of one end of the first spring 34 The first and second connecting tubes 31 and 32 are connected to each other by the positioning block 31 and the positioning groove 32, respectively. When the first connecting tube 1 and the second connecting tube 2 are to be connected, the positioning block 31 is first aligned with the positioning groove 32, and then the second connecting tube 2 is inserted into the first connecting tube 1. When the second connecting tube 2 is inserted into the first connecting tube 1, the outer side of the second connecting tube 2 squeezes the inclined surface on the front side of the fixing block 35, so that the fixing block 35 moves toward the inside of the receiving cavity 33 under the action of the squeezing force, and squeezes the first spring 34 to make the first spring 34 elastically deformed. When the rear end of the second connecting tube 2 contacts the first connecting tube 1 and cannot be inserted further, the second connecting tube 2 is The outer side of the pipe 2 releases the squeezing of the fixing block 35. At this time, the fixing block 35 returns to its original position under the action of the restoring force of the first spring 34 and is inserted into the inside of the fixing groove 36 and engages with the fixing groove 36, thereby fixing the second connecting pipe 2, so that the first connecting pipe 1 and the second connecting pipe 2 are connected; the fixing block 35 is fixedly connected to a slider 37 at the rear side near one end of the first spring 34, and the slider 37 is slidably connected to the inside of the slide groove 38, and the slide groove 38 is provided at the rear side of the storage chamber 33; when the fixing block 35 moves, the slider 37 fixedly connected to the fixing block 35 slides synchronously in the inside of the slide groove 38, and the movement of the fixing block 35 is guided by the combined action of the slider 37 and the slide groove 38. The fixing block 35 is prevented from being ejected from the interior of the storage chamber 33 under the action of the restoring force of the first spring 34, so that the fixing block 35 can move more smoothly inside the storage chamber 33. The structural design of the fixing assembly realizes the function of facilitating the assembly of the first connecting tube 1 and the second connecting tube 2. No other tools or connectors are required when assembling the first connecting tube 1 and the second connecting tube 2. It is only necessary to align the positioning block 31 fixedly connected on the inner wall of the first connecting tube 1 with the positioning groove 32 opened on the second connecting tube 2, and then insert the second connecting tube 2 into the interior of the first connecting tube 1 until it can no longer be inserted, so that the first connecting tube 1 and the second connecting tube 2 can be connected.

[0035] Furthermore, the rotation release assembly includes a push block 39, the rear end of which is slidably connected to the inside of the fixed groove 36, and the front end of the push block 39 extends to the inside of the push cavity 40, the front end of the push block 39 is provided with an inclined surface, the push cavity 40 is provided on a rotating ring 41, the rotating ring 41 is sleeved on the outside of the second connecting tube 2, the outside of the push block 39 is provided with a sliding groove 42, the inside of the sliding groove 42 is fixedly connected to a guide rod 43, the outside of the guide rod 43 is slidably connected to a sliding block 44, and the outside of the guide rod 43 is wound with a second spring 45, and the sliding block 44 is fixedly connected to the inner wall of the fixed groove 36; when the connection between the second connecting tube 2 and the first connecting tube 1 is to be released, the rotating ring 41 is first rotated to move the rotating ring 41 upward The push cavity 40 squeezes the inclined surface formed at the front end of the push block 39, so that the push block 39 moves toward the fixed block 35 under the action of the squeezing force, and pushes the fixed block 35 to move the fixed block 35 into the interior of the storage cavity 33. When the rotating ring 41 is rotated to the limit, the push block 39 also moves to the limit toward the fixed block 35 simultaneously. At this time, only a very small part of the fixed block 35 is still in the interior of the fixed groove 36. Then, the second connecting tube 2 is pulled outward to make the inner wall of the fixed groove 36 squeeze the inclined surface formed at the rear side of the fixed block 35. Under the action of the squeezing force, the fixed block 35 continues to move into the interior of the storage cavity 33 and is completely separated from the fixed groove 36. The second connecting tube 2 can be pulled out of the first connecting tube 1. The connection between the second connecting tube 2 and the first connecting tube 1 is released, and the inside of the second connecting tube 2 and the first connecting tube 1 is checked; the rear end of the second spring 45 is fixedly connected to the sliding block 44, and the front end of the second spring 45 is fixedly connected to the inner wall of the sliding groove 42; during operation, when the push block 39 moves, the sliding block 44 fixedly connected to the inner wall of the fixed groove 36 slides synchronously inside the sliding groove 42, and squeezes the second spring 45, so that the second spring 45 produces elastic deformation, and after the rotating ring 41 rotates back to its original position, the pushing cavity 40 no longer squeezes the push block 39, and at this time, the push block 39 is restored to its original position under the action of the restoring force of the second spring 45, avoiding the next time the first connecting tube 1 and the second connecting tube 2 are connected. When the two are connected, the fixed block 35 is blocked; the inner wall of the rotating ring 41 is fixedly connected with a movable block 46, and the movable block 46 is slidably connected to the inside of the movable groove 47, and the movable groove 47 is arranged on the outside of the second connecting tube 2; when the rotating ring 41 rotates, it drives the fixedly connected movable block 46 to rotate synchronously in the movable groove 47, and the rotation distance of the rotating ring 41 is limited by the combined action of the movable groove 47 and the movable block 46, so as to avoid excessive rotation of the rotating ring 41 so that the push block 39 cannot be restored to the inside of the push cavity 40; through the structural design of the rotation release component, the function of conveniently releasing the connection between the first connecting tube 1 and the second connecting tube 2 and carrying out maintenance on the inside of the first connecting tube 1 and the second connecting tube 2 is realized.

[0036] Furthermore, the leak-proof sealing component includes a sealing ring 48. Through the structural design of the sealing ring 48 in the leak-proof sealing component, the connection between the first connecting pipe and the second connecting pipe is sealed. The sealing ring 48 is glued to the outer side of the rear end of the second connecting pipe 2, and the sealing ring 48 is made of silicone rubber. An isolation membrane 49 is fixedly connected to the inner wall of the first connecting pipe 1 near the front end, and a plugging ring 50 is fixedly connected to the rear side of the isolation membrane 49. The plugging ring 50 is water-soluble polyvinyl alcohol, and the isolation membrane 49 is a water-soluble polyurethane plugging agent. If the first connecting pipe 1 and the second connecting pipe 2 are used for a long time due to the aging of the sealing ring 48, This causes leakage at the joint between the first connecting pipe 1 and the second connecting pipe 2. At this time, the leaking water will first contact the plugging ring 50 made of water-soluble polyvinyl alcohol. At this time, the plugging ring 50 will be continuously dissolved, removing the blocking of the isolation membrane 49 so that the isolation membrane 49 is directly in contact with water. The water contacts the isolation membrane 49 made of water-soluble polyurethane plugging agent, causing the isolation membrane 49 to disperse, emulsify, and foam by itself, and immediately undergo a chemical reaction to form an impermeable elastic colloidal solid to block the water flow, thereby preventing leakage from occurring at the joint between the first connecting pipe 1 and the second connecting pipe 2 during long-term use.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A pipe connection structure of a chiller, comprising a first connecting pipe (1); characterized in that: A second connecting tube (2) is arranged at the front end of the first connecting tube (1), a rear end of the second connecting tube (2) is inserted into the interior of the first connecting tube (1), and a connecting mechanism is arranged between the first connecting tube (1) and the second connecting tube (2); The connecting mechanism is used to assemble and seal the first connecting tube (1) and the second connecting tube (2), and comprises a positioning and fixing component, a rotation release component and a leakproof sealing component, wherein the positioning and fixing component is arranged between the outer side of the second connecting tube (2) and the inner wall of the first connecting tube (1), the rotation release component is arranged at the front end of the positioning and fixing component, and the leakproof sealing component is arranged at the rear end of the positioning and fixing component.

2. A pipe connection structure for a chiller according to claim 1, characterized in that: The positioning and fixing assembly comprises a positioning block (31), the positioning block (31) being fixedly connected to the inner wall of the first connecting tube (1), a positioning groove (32) being provided on the outer side of one end of the second connecting tube (2) close to the first connecting tube (1), a receiving cavity (33) being provided inside the positioning block (31), a first spring (34) being provided inside the receiving cavity (33), and a fixing block (35) being slidably connected inside the receiving cavity (33), the fixing block (35) being engaged with a fixing groove (36), and the fixing groove (36) being provided on the outer side of the second connecting tube (2).

3. A pipe connection structure for a chiller according to claim 2, characterized in that: One end of the first spring (34) close to the fixing block (35) is fixedly connected to the fixing block (35), and one end of the first spring (34) away from the fixing block (35) is fixedly connected to the inner wall of the storage cavity (33).

4. The pipe connection structure of a chiller according to claim 3, characterized in that: The fixing block (35) has inclined surfaces on both the front and rear sides of one end away from the first spring (34), and the inclination angle of the inclined surface on the front side of the fixing block (35) is greater than the inclination angle of the inclined surface on the rear side of the fixing block (35).

5. The pipe connection structure of a chiller according to claim 4, characterized in that: A slider (37) is fixedly connected to the rear side of the fixed block (35) near one end of the first spring (34), and the slider (37) is slidably connected to the inside of a slide groove (38), and the slide groove (38) is opened on the rear side of the storage cavity (33).

6. The pipe connection structure of a chiller according to claim 1, characterized in that: The rotation release assembly comprises a push block (39), the rear end of the push block (39) is slidably connected to the inside of the fixed groove (36), and the front end of the push block (39) extends to the inside of the push chamber (40), the front end of the push block (39) is provided with an inclined surface, the push chamber (40) is provided on a rotating ring (41), the rotating ring (41) is sleeved on the outside of the second connecting tube (2), the outside of the push block (39) is provided with a sliding groove (42), the inside of the sliding groove (42) is fixedly connected with a guide rod (43), the outside of the guide rod (43) is slidably connected with a sliding block (44), and the outside of the guide rod (43) is wound with a second spring (45), and the sliding block (44) is fixedly connected to the inner wall of the fixed groove (36).

7. A pipe connection structure for a chiller according to claim 6, characterized in that: The rear end of the second spring (45) is fixedly connected to the sliding block (44), and the front end of the second spring (45) is fixedly connected to the inner wall of the sliding groove (42).

8. The pipe connection structure of a chiller according to claim 7, characterized in that: A movable block (46) is fixedly connected to the inner wall of the rotating ring (41), and the movable block (46) is slidably connected to the inside of a movable groove (47). The movable groove (47) is opened on the outside of the second connecting pipe (2).

9. The pipe connection structure of a chiller according to claim 1, characterized in that: The leak-proof sealing assembly comprises a sealing ring (48), the sealing ring (48) being glued to the outer side of the rear end of the second connecting tube (2), and the sealing ring (48) being made of silicone rubber; an isolation membrane (49) is fixedly connected to the inner wall of the first connecting tube (1) at a position close to the front end, and a leak-proof ring (50) is fixedly connected to the rear side of the isolation membrane (49).

10. The pipe connection structure of a chiller according to claim 9, characterized in that: The plugging ring (50) is made of water-soluble polyvinyl alcohol, and the isolation film (49) is made of water-soluble polyurethane plugging agent.

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