CN111089203A - Sealing method for refrigerating system pipeline - Google Patents

Abstract

The invention provides a sealing method of a refrigerating system pipeline, wherein the pipeline comprises an inner inserting pipe and an outer sleeve pipe, and the sealing method comprises the following steps: inserting the inner cannula into the outer cannula to dock the two; coating the butt joint of the outer sleeve and the inner inserting tube by using a sealing device; and injecting sealant into the sealant storage cavity of the sealing device through the sealant injection port on the sealing device. The pipeline is sealed by combining the sealing device with the sealant, so that various problems caused by adopting flame brazing in the existing refrigerator are avoided, the operation is safe, the sealing process is simplified, and the standardized execution is easy; and, utilize sealing device cladding pipeline earlier, pour into sealed glue into again and seal the pipeline, sealed effect is better.

Description

Sealing method for refrigerating system pipeline

Technical Field

The invention relates to the technical field of household appliances, in particular to a method for sealing a pipeline of a refrigeration system.

Background

The existing refrigerator generally adopts a vapor compression type refrigeration, the refrigeration system generally comprises a compressor, a condenser, a capillary tube, an evaporator and the like, the compressor, the condenser, the capillary tube, the evaporator and the like are connected into a sealed system through pipelines, and a refrigerant is subjected to phase change inside to release heat and absorb heat to refrigerate. The sealing performance is particularly important for the whole refrigerating system, once the refrigerant leaks, the refrigerating performance is influenced, and in addition, the existing flammable refrigerant is used, and certain potential safety hazard is also brought.

The existing refrigeration system pipeline sealing is generally carried out by adopting a flame brazing mode. Flame brazing has strict requirements on the operation level of operators, a production line generally has a plurality of welding personnel, the integral consistency cannot be well guaranteed, more importantly, the welding needs to use fire species, and certain hidden dangers are caused to the production safety.

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a method of sealing a refrigeration system line that overcomes or at least partially solves the above mentioned problems.

A further object of the present invention is to ensure the uniformity of the sealing of the pipeline and to improve the quality of the sealing.

The invention provides a sealing method of a refrigerating system pipeline, wherein the pipeline comprises an inner inserting pipe and an outer sleeve pipe, and the sealing method comprises the following steps:

inserting the inner cannula into the outer cannula to dock the two;

coating the butt joint of the outer sleeve and the inner inserting tube by using a sealing device;

and injecting sealant into the sealant storage cavity of the sealing device through the sealant injection port on the sealing device.

Optionally, after the step of injecting the sealant into the sealant storage chamber, the method further includes:

and standing the sealing device for a preset time to cure the sealing glue.

Optionally, the sealant comprises a main agent and a curing agent;

the step of injecting the sealant into the sealant storage cavity of the sealing device comprises the following steps:

and mixing the main agent and the curing agent at the double-glue-outlet gun heads according to a preset weight ratio by using a glue-injection gun with the double-glue-outlet gun heads, aligning the double-glue-outlet gun heads to the glue storage cavity, and injecting the mixed main agent and the curing agent into the glue storage cavity.

Optionally, the preset weight ratio is 3: 1 to 5: 1.

optionally, before the step of covering the joint of the outer sleeve and the inner cannula with the sealing device, the method further comprises:

detecting whether the butt joint of the inner inserting tube and the outer sleeve is clean;

and if the butt joint is stained, cleaning the butt joint.

Optionally, the inner cannula is inserted into the outer cannula to a depth dimension greater than 5 mm.

Optionally, the sealing device includes two sealing parts, the two sealing parts are configured to be fittingly fastened to form a cylinder covering the outer side of the joint of the outer sleeve and the inner sleeve, each of the two sealing parts has a glue storage groove, and when the two sealing parts are fastened, the two glue storage grooves are opposite and connected in the radial direction of the pipeline to form a closed glue storage cavity;

a glue injection opening is formed in the area, corresponding to the glue storage groove, of one sealing component;

the step of coating the butt joint of the outer sleeve and the inner inserting tube by using the sealing device specifically comprises the following steps of:

moving the two sealing members to the interface of the inner cannula and the outer cannula;

and buckling the two sealing parts to enable the two sealing parts to be formed into a cylinder shape covering the outer side of the butt joint.

Optionally, each glue storage tank comprises an arc-shaped tank section and two taper tank sections respectively located at two ends of the extension direction of the arc-shaped tank section, and the two taper tank sections extend in a tapered manner from the corresponding arc-shaped tank sections to a direction far away from the arc-shaped tank sections;

after the two sealing parts are buckled, the two arc-shaped groove sections are in butt joint forming to form a cylinder shape coated on the peripheral wall of the pipeline, and the two cone-shaped groove sections of one glue storage groove and the two cone-shaped groove sections of the other glue storage groove are in one-to-one correspondence and are respectively in butt joint forming to form a truncated cone shape coated on the peripheral wall of the pipeline.

Optionally, a first connecting plate is formed outside the notch of the arc-shaped groove section of one of the sealing parts, and the first connecting plate is provided with at least one clamping hole;

at least one fastener which is in one-to-one correspondence and is matched with at least one clamping hole is formed on the outer side of the arc groove section of the other sealing component;

the step of snap-fitting the two sealing members comprises:

at least one buckle is clamped into the corresponding clamping hole.

Optionally, the sealing device comprises a fastening part, both ends of which are formed with openings, the fastening part can be operationally sleeved and coated outside the butt joint of the outer sleeve and the inner inserting tube through the openings;

the fastening component is provided with a glue storage cavity communicated with the opening and a glue injection port communicated with the glue storage cavity;

the step of coating the butt joint of the outer sleeve and the inner inserting tube by using the sealing device specifically comprises the following steps of:

sleeving the fastening part on the outer peripheral wall of the inner inserting tube through the opening;

and moving the fastening component towards the direction of the outer sleeve so that the fastening component is tightened and covered on the outer side of the butt joint.

According to the sealing method of the refrigeration system pipeline, the pipeline is sealed by combining the sealing device with the sealant, so that various problems caused by flame brazing in the existing refrigerator are avoided, the operation is safe, the sealing process is simplified, and the standardized execution is easy; and, utilize sealing device cladding pipeline earlier, pour into sealed glue into again and seal the pipeline, sealed effect is better.

Furthermore, in the method for sealing the pipeline of the refrigeration system, the pipeline is sealed by adopting the specially designed sealing device, so that the uniformity of the distribution of the sealant at the butt joint of the pipeline is ensured, and the sealing quality of the pipeline is improved.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic illustration of a method of sealing a refrigerant system circuit according to one embodiment of the present invention;

FIG. 2 is a flow chart of a method of sealing a refrigerant system circuit according to one embodiment of the present invention;

FIG. 3 is a schematic exterior view of a refrigerant system tube with a sealing device according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view of a sealing device according to one embodiment of the present invention;

FIG. 5 is a schematic diagram of four states of a refrigerant system circuit having a sealing device according to one embodiment of the present invention;

FIG. 6 is a schematic view of a sealing device according to another embodiment of the invention;

FIG. 7 is a schematic view of one of the sealing members of a sealing device according to another embodiment of the invention;

FIG. 8 is a schematic view of another seal component of a seal assembly according to another embodiment of the present invention;

FIG. 9 is a schematic view of a refrigerant system circuit having a sealing arrangement according to another embodiment of the present invention; and

fig. 10 is a sectional view in the direction a-a of fig. 9.

Detailed Description

The embodiment provides a sealing method of a refrigeration system pipeline, wherein the refrigeration system is a refrigeration system of refrigeration equipment, and the refrigeration equipment can be equipment with refrigeration and/or freezing functions, such as a refrigerator, an ice chest and the like.

The pipeline may include an inner tube 200 and an outer tube 100, the inner tube 200 is inserted into the outer tube 100 and is connected to the outer tube 100, and in order to seal the connection between the inner tube 200 and the outer tube 100, the connection is sealed by a novel sealing device. The butt joint may be a position where the end of the outer sleeve 100 butt jointed with the inner cannula 200 coincides with the inner cannula 200.

As shown in fig. 1, the sealing method may specifically include:

step S102, inserting the inner cannula 200 into the outer cannula 100 to butt the two;

step S104, covering the butt joint of the outer sleeve 100 and the inner inserting tube 200 by using a sealing device;

and S106, injecting the sealant 101 into the sealant storage cavity of the sealing device through the sealant injection port on the sealing device.

Before the step of covering the joint of the outer sleeve 100 and the inner cannula 200 by using the sealing device, the method further comprises the following steps: whether the joint between the inner cannula 200 and the outer cannula 100 is clean or not is detected, and if stains exist in the joint, the joint is cleaned.

After the step of injecting the sealant 101 into the sealant storage cavity, the method may further include: the sealing device is left for a predetermined time to cure the sealant 101.

In this embodiment, the sealant 101 may be a two-component polyurethane adhesive, which is a kind of adhesive containing carbamate (-NHCOO-) in a molecular chain generated by addition polymerization of isocyanate and polyether or polyester polyol. The sealant 101 comprises a main agent and a curing agent, wherein the main agent is polyol, and the curing agent is isocyanate containing isocyanate group (-NCO). The main agent and the curing agent are mixed and then are cured by addition polymerization to form the thermosetting plastic or elastomer. The sealant 101 has the advantages of high bonding strength, quick curing, high peel strength, impact resistance, vibration resistance, good fatigue resistance, high temperature resistance, good oil resistance, good solvent resistance and good weather resistance, easy storage, on-site glue mixing, simple process and high production efficiency.

The sealing method can be implemented by a robot in combination with the image recognition method, specifically, the robot inserts the inner cannula 200 into the outer cannula 100 to a certain depth, and then the inner cannula 200 is inserted into the outer cannula 100 to be butted with the outer cannula 100, and the depth of the inner cannula 200 into the outer cannula 100 may be greater than 5mm, for example, 8mm or greater.

The image recognition device recognizes the joint of the inner cannula 200 and the outer cannula 100, collects the image of the joint, and compares the collected image with the standard image, thereby determining whether there is a stain on the joint, and if there is a stain, the plasma gun can be controlled to spray plasma water to the joint, so as to clean the joint and the surrounding area. Wherein the standard image is a pre-collected clean image of the butt joint.

Thereafter, the robot moves the sealing device to the pipeline and operates the sealing device such that the sealing device covers the butt joint of the inner cannula 200 and the outer cannula 100.

And then, the glue injection gun is aligned with the glue injection port to inject the sealant 101 into the glue storage cavity, the main agent and the curing agent are separately stored in different containers before glue injection, and when the sealant 101 is injected into the glue storage cavity of the sealing device, the main agent with a certain weight and the curing agent with a certain weight can be respectively injected into the two glue outlet gun heads of the glue injection gun through the operation of the manipulator. And the glue injection gun with double glue-out gun heads mixes the main agent and the curing agent at the double glue-out gun heads according to a preset weight ratio, aligns the main agent and the curing agent at a glue injection port, and injects the mixed main agent and the curing agent into the glue storage cavity. The preset weight ratio can be 3: 1 to 5: 1, for example, the preset weight ratio is 4: 1.

after the sealant 101 is injected into the sealing device, the sealing device is left standing for a predetermined time, for example, 10min or more, and the sealing device is left to stand for curing.

Fig. 2 is a flow chart illustrating a method for sealing a refrigerant system circuit according to an embodiment of the present invention.

As shown in fig. 2, the method for sealing a refrigerant system pipe of the present embodiment includes:

step S202, inserting the inner cannula 200 into the outer cannula 100 to butt the two;

step S204, detecting whether the joint of the inner cannula 200 and the outer cannula 100 is clean, if the joint is clean, switching to step S208, and if the joint is dirty, switching to step S206;

step S206, cleaning the butt joint;

step S208, moving the sealing device to the butt joint of the inner inserting tube 200 and the outer sleeve 100, and operating the sealing device to enable the sealing device to cover the butt joint;

step S210, using a glue injection gun with double glue-out gun heads to mix a main agent and a curing agent according to the ratio of 4: 1, mixing at a double glue-discharging gun head, aligning the double glue-discharging gun head to a glue storage cavity, and injecting a mixed main agent and a curing agent into the glue storage cavity;

and step S212, standing the sealing device for 10min to cure the sealant.

In the embodiment, the specially designed sealing device is matched with the specially designed sealing process, the pipeline is firstly coated and then injected with glue, the sealing effect is better, the sealing process is simplified, and the standardized execution is easy.

The aforementioned sealing means may comprise two different forms of construction.

Specifically, as shown in fig. 3 to 5, in one embodiment, the sealing device may have a fastening member 500, both ends of the fastening member 500 are formed with openings 502, and the fastening member 500 is operatively sleeved and wrapped outside the joint of the outer sleeve 100 and the inner sleeve 200 through the openings 502. The fastening component 500 is provided with a glue storage cavity 510 communicated with the opening 502 and a glue injection port 501 communicated with the glue storage cavity 510, and when the fastening component 500 is wrapped outside the butt joint, the sealant 101 is injected into the glue storage cavity 510 through the glue injection port 501. So, through fastening member 500 and sealed cooperation of gluing 101, wrap the pipeline earlier, the injecting glue again, sealed effect is better.

The whole fastening component 500 can be annular, and correspondingly, the glue storage cavity 510 is an annular cavity, so that glue wrapped at the butt joint is uniformly distributed in a 360-degree area, and the sealing quality is improved.

As shown in fig. 4, the inner circumferential wall of the first end of the fastening member 500 is formed with a first annular projection 520, and the inner circumferential wall of the second end of the fastening member 500 is formed with a second annular projection 530, the radius of the second annular projection 530 being greater than the radius of the first annular projection 520. When the fastening member 500 is wrapped outside the butt joint, the first annular protrusion 520 is attached to the outer circumferential wall of the inner plug 200, and the second annular protrusion 530 is attached to the outer circumferential wall of the outer sleeve 100, so that the two ends of the sealing device are sealed with the pipeline by the first annular protrusion 520 and the second annular protrusion 530, and the risk of flash is prevented.

As shown in fig. 5, the process of wrapping the fastening member 500 at the connection of the outer sleeve 100 and the inner cannula 200 can be divided into four steps. As shown in fig. 5(a), first, the fastening member 500 is fitted over the inner cannula 200 through the opening 502 thereof; thereafter, as shown in fig. 5(b), the fastening member 500 is moved in the direction of the outer sleeve 100 by the mechanical force of the auxiliary tool; as shown in fig. 5(c), the fastening member 500 moves to a predetermined position, tightens and covers the outer side of the butt joint, and the distances from the two ends of the fastening member 500 to the butt joint can be substantially equal, so that the areas of the upstream area and the downstream area of the butt joint covered by the sealing device are substantially the same, which is beneficial to improving the sealing effect. The butt joint may be located approximately in the middle of the glue storage cavity of the fastening component 500, the glue injection port 501 is offset from the butt joint and faces the inner cannula 200, and in an alternative embodiment, the glue injection port 501 may face the butt joint; as shown in fig. 5(d), after the fastening member 500 is wrapped on the outer side of the butt joint, the sealant 101 is injected into the sealant storage cavity 510 through the sealant injection port 501, so that the sealant 101 is filled in the sealant storage cavity 510, and the injected sealant amount can be preset according to the inner volume of the sealant storage cavity 510, which is beneficial to standardized execution.

In this embodiment, the step of covering the joint between the outer sleeve 100 and the inner cannula 200 by using the sealing device specifically includes: the fastening member 500 is fitted to the outer circumferential wall of the inner cannula 200 through the opening 502; the fastening member 500 is moved toward the outer sleeve 100 so that the fastening member 500 is tightened and wrapped outside the butt joint.

As shown in fig. 3 and 4, the outer peripheral wall of the first end and the outer peripheral wall of the second end of the fastening member 500 may be formed with a third annular protrusion 350 to facilitate the application of an auxiliary tool to the fastening member 500.

As shown in fig. 4, the inner peripheral wall of the second end of the fastening member 500 includes a divergent section 540 that diverges from one end of the second annular projection 530 away from the first annular projection 520 toward the opening direction of the second end. As shown in fig. 5(b), the tapered section 540 is designed to facilitate the fastening member 500 to press the end of the outer sleeve 100 toward the outer sleeve 100 and move to a position covering the outer circumferential wall of the outer sleeve 100.

In another embodiment, as shown in fig. 6 to 10, the sealing device may include two sealing members, i.e., a sealing member 300 and a sealing member 400, wherein the sealing member 300 and the sealing member 400 are configured to be fittingly snapped to form a cylinder shape covering the outer side of the joint of the outer sleeve 100 and the inner cannula 200. As shown in fig. 9, the sealing member 300 and the sealing member 400 are fastened together and cover the outer side of the region around the joint between the outer sleeve 100 and the inner sleeve 200.

In this embodiment, the step of covering the joint between the outer sleeve 100 and the inner cannula 200 by using the sealing device specifically includes: moving the two sealing members (300, 400) to the interface of the inner cannula 200 and the outer cannula 100; the two seal members (300, 400) are engaged with each other so that the two seal members are formed into a cylindrical shape covering the outside of the joint.

The sealing member 300 and the sealing member 400 each have a glue storage tank, as shown in fig. 6, the sealing member 300 has a glue storage tank 310, and the sealing member 400 has a glue storage tank 410; when the sealing member 300 and the sealing member 400 are fastened, the glue storage tank 310 and the glue storage tank 410 are opposite and connected in the radial direction of the pipeline to form a closed glue storage cavity.

As shown in fig. 6 and 10, a glue injection opening 341 is formed in a region of one of the sealing members 300 corresponding to the glue storage tank 310, a protrusion 340 protruding outward may be formed on the sealing member 300, and the glue injection opening 341 is formed on the protrusion 340. The injected glue amount can be preset according to the inner volume of the glue storage cavity, and standardized execution is facilitated.

After the sealing member 300 and the sealing member 400 are buckled and coated outside the butt joint of the outer sleeve 100 and the inner insert tube 200, the sealant 101 is injected into the sealant storage cavity through the sealant injection port 341, the injected sealant 101 is coated around the pipeline and is filled in the sealant storage cavity of the sealing device, and after the sealant 101 is cured, the joint is sealed. So, through sealing device and sealed 101 cooperation of gluing, wrap the pipeline earlier, the injecting glue again, sealed effect is better.

After the sealing member 300 and the sealing member 400 are fastened and covered outside the joint of the outer sleeve 100 and the inner cannula 200, the center line of the extending direction of the glue storage cavity defined by the glue storage groove 310 and the glue storage groove 410 is parallel to the extending direction of the pipeline, and the size of the extending direction of the glue storage cavity can be larger than that of the joint of the outer sleeve 100 and the inner cannula 200, as shown in fig. 10, the size of the extending direction of the glue storage cavity is far larger than that of the joint, so as to ensure the volume of the glue storage cavity, and ensure the volume of the sealant 101 injected into the glue storage cavity and the distribution area of the sealant 101 at the peripheral wall of the outer sleeve 100, the peripheral wall of the inner cannula 200 and the joint of the outer sleeve 100 and the inner cannula 200, so as to.

The distance between the two ends of the sealing member 300 or 400 in the extending direction of the pipeline and the butt joint can be approximately equal, so that the areas of the upstream area and the downstream area of the butt joint covered by the sealing device are approximately equal, and the sealing effect is improved.

As shown in fig. 7, the glue storage tank 310 of the sealing member 300 includes an arc-shaped tank section 311 and two taper tank sections 312 respectively located at two ends of the extension direction of the arc-shaped tank section 311, and the two taper tank sections 312 extend from the corresponding arc-shaped tank section 311 to a direction far away from the arc-shaped tank section 311 in a tapered manner; as shown in fig. 8, the glue storage tank 410 of the sealing member 400 includes an arc-shaped tank section 411 and two taper tank sections 412 respectively located at two ends of the extension direction of the arc-shaped tank section 411, and the two taper tank sections 412 extend from the corresponding arc-shaped tank section 411 to a direction away from the arc-shaped tank section 411 in a tapered manner.

As shown in fig. 9, after the sealing member 300 is fastened to the sealing member 400, the arc-shaped groove section 311 and the arc-shaped groove section 411 are butt-jointed to form a cylinder shape covering the outer peripheral wall of the pipeline, and the two cone-shaped groove sections 312 of the glue storage groove 310 and the two cone-shaped groove sections 412 of the glue storage groove 410 are in one-to-one correspondence and butt-jointed to form a truncated cone shape covering the outer peripheral wall of the pipeline. In this way, the sealing members 300 and 400 are designed to have the structures of the arc-shaped groove sections 311 and 411, so that the sealant at the joint in the circumferential direction is uniformly distributed, and the sealant amount is large; and through design toper groove section 312, toper groove section 412 at the both ends of arc groove section 311, arc groove section 411 for the size that sealing member extends to both ends convergent, be favorable to the laminating of sealing device both ends and pipeline periphery wall, be convenient for form good sealed effect.

In order to improve the sealing performance between the sealing device and the pipeline, in this embodiment, the sealing members 300 and 400 may further have a sealing section 320 and a sealing section 420 located at two ends of the extending direction thereof and respectively connected to the tapered groove section 312 and the tapered groove section 412, and the sealing section 320 and the sealing section 420 respectively have two arc-shaped slots 321 and two arc-shaped slots 421. As shown in fig. 9, after the two sealing members (300, 400) are fastened, the two arc-shaped slots 321 and the two arc-shaped slots 421 are in one-to-one correspondence and are respectively formed into a cylindrical shape covering the outer peripheral wall of the pipe. Therefore, after the two sealing parts coat the pipeline, the arc surfaces of the two cylindrical arc-shaped clamping grooves 321 and the arc surfaces of the two cylindrical arc-shaped clamping grooves 421 can be uniformly attached to the peripheral wall of the pipeline, and the risk of glue overflow is prevented.

In some embodiments, the inner wall of the arc-shaped slot (321, 421) may be formed with a plurality of sealing protrusions (322, 422) spaced apart from each other in a direction parallel to the extending direction of the pipeline, and each sealing protrusion (322, 422) extends along the peripheral wall of the arc-shaped slot (321, 421), that is, the inner wall of the arc-shaped slot 321 is formed with a plurality of sealing protrusions 322 spaced apart from each other in a direction parallel to the extending direction of the pipeline, the inner wall of the arc-shaped slot 421 is formed with a plurality of sealing protrusions 422 spaced apart from each other in a direction parallel to the extending direction of the pipeline, the sealing protrusions 322 extend along the peripheral wall of the arc-shaped slot 321, and the sealing protrusions 422 extend along the peripheral wall of the arc-. As shown in fig. 7, the arc-shaped catching groove 321 has three sealing protrusions 322, and as shown in fig. 8, the arc-shaped catching groove 421 has three sealing protrusions 422.

After the sealing member 300 is fastened with the sealing member 400, all the sealing protrusions 322 of the sealing member 300 correspond to all the sealing protrusions 422 of the sealing member 400 one by one and are butt-jointed to form a ring shape covering the outer peripheral wall of the pipeline, and the sealing protrusions (322, 422) are attached to the outer peripheral wall of the pipeline. Therefore, the arc-shaped clamping grooves (321 and 421) with the sealing protrusions (322 and 422) are designed at the two ends of each sealing component (300 and 400), when the sealing component 300 is buckled with the sealing component 400, the sealing effect of the sealing device on a pipeline is enhanced, the risk of flash is further prevented, and the sealing quality is improved.

To facilitate the engagement of the sealing member 300 and the sealing member 400, as shown in fig. 6 to 8, a first connection plate 330 is formed outside the notch of the arc-shaped groove section 311 of one of the sealing members 300, and the first connection plate 330 is formed with at least one engaging hole 331; at least one buckle 415 which corresponds to the at least one buckle hole 331 in a one-to-one manner and can be matched and buckled with the at least one buckle hole 331 is formed on the outer side of the arc-shaped groove section 411 of the other sealing part 400, and when the sealing part 300 is buckled with the sealing part 400, the at least one buckle 415 needs to be buckled into the corresponding buckle hole 331. As shown in fig. 6, the first connecting plate 330 is formed with two engaging holes 331 spaced apart in the extending direction thereof, and a engaging block (not numbered) is disposed between the two engaging holes 331; two spaced-apart clips 415 are formed on the outer side of the arc-shaped groove section 411 of the sealing member 400, and a matching groove (not numbered) is formed between the two clips 415, and is adapted to be engaged with a latching block between the two latching holes 331.

Further, in order to improve the tightness of the combination of the sealing members 300 and the sealing members 400, as shown in fig. 7 and 8, a rib 313 is formed at the outer edge of the slot opening of the glue storage tank 310 of one of the sealing members 300; the outer edge of the notch of the glue storage groove 410 of the other sealing component 400 is provided with a clamping groove 413 matched with the convex rib 313. The two protruding ribs 313 and the two engaging grooves 413 are both provided, as shown in fig. 7, the two protruding ribs 313 are respectively formed on two sides of the outer edge of the slot opening of the glue storage slot 310, and correspondingly, as shown in fig. 8, the two engaging grooves 413 are respectively formed on two sides of the outer edge of the slot opening of the glue storage slot 410.

When the sealing member 300 is fastened to the sealing member 400, the two fasteners 415 are respectively inserted into the two corresponding fastening holes 331, and the two ribs 313 are respectively inserted into the corresponding fastening grooves 413, so that the sealing member 300 and the sealing member 400 are tightly combined and wrapped around the outer peripheral wall of the pipeline.

As shown in fig. 6 and 7, a second connecting plate 314 is formed on the outer side of the arc-shaped groove section 311 having the first connecting plate 330, and the second connecting plate 314 and the first connecting plate 330 are respectively located on both sides of the arc-shaped groove section 311; the outer side of the arc-shaped groove section 411 with the catch 415 is formed with a third connecting plate 414, and the third connecting plate 414 and the catch 415 are respectively located at both sides of the arc-shaped groove section 411. As shown in fig. 6, the second connection plate 314 is connected to the third connection plate 414, so that the sealing member 300 and the sealing member 400 are connected together before the pipeline is covered, and when the pipeline is covered with the sealing members 300 and 400, one of the sealing members is turned over toward the other sealing member, and the two sealing members are engaged with each other, thereby covering the outside of the pipeline.

When the sealing member 300 and the sealing member 400 are fastened to cover the joint between the outer sleeve 100 and the inner sleeve 200, the joint may be located in the middle of the glue storage tank 310 of the sealing member 300, and correspondingly, the joint may also be located in the middle of the glue storage tank 410 of the sealing member 400, that is, when the pipeline is covered by the sealing device, the joint may be located in the middle of the glue storage chamber of the sealing device. Then, the two clips 415 are respectively clipped into the two corresponding clipping holes 331, and the two ribs 313 are respectively clipped into the corresponding clipping grooves 413, so that the sealing member 300 and the sealing member 400 are tightly combined and wrapped around the outer peripheral wall of the pipeline. And then mixing the main agent and the curing agent at the double-glue-outlet gun heads according to a preset weight ratio through a glue-injection gun with double-glue-outlet gun heads, aligning the main agent and the curing agent to the glue-injection port 341, injecting the mixed main agent and the curing agent into the glue storage cavity, and waiting for the curing of the sealant 101.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A sealing method of a refrigeration system pipeline, the pipeline comprises an inner intubation tube and an outer sleeve, and the sealing method comprises: inserting the inner cannula into the outer cannula to butt the two; Cover the butt joint of the outer sleeve and the inner cannula with a sealing device; The sealant is injected into the glue storage cavity of the sealing device through the glue injection port on the sealing device. 2. The sealing method of claim 1, wherein After the step of injecting sealant into the glue storage cavity, the method further includes: The sealing device is allowed to stand for a preset time to allow the sealant to cure. 3. The sealing method of claim 1, wherein The sealant includes a main agent and a curing agent; The step of injecting the sealant into the glue storage cavity of the sealing device includes: The main agent and the curing agent are mixed at the double glue gun head according to the preset weight ratio by using a glue injection gun with a double glue gun head, and the double glue gun head is aligned with the into the glue storage cavity, and inject the mixed main agent and the curing agent into the glue storage cavity. 4. The sealing method of claim 3, wherein The preset weight ratio is 3:1 to 5:1. 5. The sealing method of claim 1, wherein Before the step of using a sealing device to cover the butt joint of the outer sleeve and the inner cannula, the method further includes: Detecting whether the joint between the inner cannula and the outer cannula is clean; If the butt joints are stained, clean the joints. 6. The sealing method of claim 1, wherein The depth dimension at which the inner cannula is inserted into the outer cannula is greater than 5 mm. 7. The sealing method of claim 1, wherein The sealing device includes two sealing parts, and the two sealing parts are arranged to be adaptable and snap-fit, so as to be formed into a cylindrical shape covering the outer side of the butt joint of the outer sleeve and the inner intubation tube, and the two sealing parts are Each of the sealing parts has a glue storage groove. When the two sealing parts are fastened together, the two glue storage grooves are opposite and connected in the radial direction of the pipeline to form a closed storage tank. glue cavity; The glue injection port is formed in a region of one of the sealing parts corresponding to the glue storage tank; The step of using a sealing device to cover the butt joint of the outer sleeve and the inner cannula specifically includes: moving the two sealing members to the interface of the inner cannula and the outer cannula; The two sealing parts are fastened together, so that the two sealing parts are formed into a cylindrical shape covering the outer side of the butt joint. 8. The sealing method of claim 7, wherein Each of the glue storage tanks includes an arc-shaped groove section and two conical groove sections respectively located at both ends of the arc-shaped groove section in the extending direction. The two conical groove sections are formed by the corresponding arc-shaped groove sections. Tapered and extended in a direction away from the arc-shaped groove segment; After the two sealing parts are fastened together, the two arc-shaped groove sections are butted and formed into a cylindrical shape covering the outer peripheral wall of the pipeline, and the two conical shapes of one of the glue storage grooves are formed into a cylindrical shape. The groove sections are in one-to-one correspondence with the two conical groove sections of the other glue storage tank, and are respectively butted to form a truncated cone covering the outer peripheral wall of the pipeline. 9. The sealing method of claim 8, wherein A first connecting plate is formed on the outside of the notch of the arc-shaped groove section of one of the sealing components, and at least one clamping hole is formed on the first connecting plate; The outer side of the arc-shaped groove section of the other sealing member is formed with at least one buckle that corresponds to and fits with the at least one clamping hole; The step of snapping the two sealing components together includes: The at least one clip is snapped into the corresponding snap hole. 10. The sealing method of claim 1, wherein The sealing device includes a fastening member, both ends of which are formed with openings, and the fastening member is operably sleeved through the openings and covers the butt joint of the outer sleeve and the inner cannula outside; The fastening member is formed with the glue storage cavity communicated with the opening and the glue injection port communicated with the glue storage cavity; The step of using a sealing device to cover the butt joint of the outer sleeve and the inner cannula specifically includes: The fastening component is sleeved on the outer peripheral wall of the inner cannula through the opening; The fastening part is moved toward the outer sleeve, so that the fastening part is tightened and covers the outside of the butt joint.

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