CN212338475U - Connecting mechanism for inlet and outlet connecting pipe and connecting pipe of heat exchanger - Google Patents

Abstract

The utility model discloses a coupling mechanism of takeover and connecting pipe is imported and exported to heat exchanger, takeover and the connecting pipe of establishing including the endotheca, the tip of takeover and the tip of connecting pipe pass through the unsmooth nested cooperation of concave-convex structure to through establishing seal ring sealing connection on concave-convex structure, the tip outside that takeover and connecting pipe are connected still is equipped with first buckle and second buckle, and first buckle and second buckle pass through fastener and lock annex locking and buckle clamp tightly take over and connecting pipe.

Description

Connecting mechanism for inlet and outlet connecting pipe and connecting pipe of heat exchanger

Technical Field

The utility model relates to a connect pipe fitting technical field, especially relate to a coupling mechanism of takeover and connecting pipe is imported and exported to heat exchanger.

Background

Most of inlet and outlet connecting pipes of the prior micro-channel heat exchanger are copper pipes and aluminum pipes, the connecting pipe is mainly in a straight pipe form and an L-shaped form, the end part of the connecting pipe adopts a flaring form or a necking form, and after a product is sent to a client, the inlet and outlet connecting pipe needs to be connected with a copper pipe on a client set in a flame welding mode, so that the requirement on the manual flame welding level of a client worker is high, otherwise, the leakage is easy to occur at a connecting welding seam. How to avoid using flame welding for a client and how to avoid the client being suitable for open fire is a problem which needs to be solved urgently in the prior art.

In order to solve the above problems, a pipe joint and a metal pipe connecting pipe fitting (publication number: CN201284890Y) are disclosed in chinese patent, which are sealed by a buckle after being sleeved with a pipe, and the pipe joint and the connecting pipe are sealed with the aid of paired flanges, bolts, and other structural members. However, the above patents have the disadvantages of more matching parts, complex assembly and poor connection sealing performance.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a connection mechanism for an inlet/outlet connection pipe and a connection pipe of a heat exchanger, where the connection mechanism is used to quickly connect a microchannel heat exchanger and a unit pipeline by means of a tongue-and-groove type fit and a mechanical clamping manner, so as to avoid using open flame and product leakage caused by flame welding quality problems.

In order to solve the above technical problem, the utility model provides a technical scheme as follows: the utility model provides a heat exchanger is imported and exported coupling mechanism of takeover and connecting pipe, includes takeover and the connecting pipe that the endotheca was established, the tip of takeover with the tip of connecting pipe is through the unsmooth nested cooperation of concave-convex structure, and through establishing seal ring sealing connection on the concave-convex structure, the takeover with the tip outside that the connecting pipe is connected still is equipped with first buckle and second buckle, first buckle with the second buckle passes through fastener and lock annex locking and buckle clamp tightly the takeover with the connecting pipe.

Among the above-mentioned coupling mechanism, the tip of takeover and the tip of connecting pipe pass through concave-convex structure cooperation, and plus first buckle and second buckle press from both sides tightly, realize the export of heat exchanger takeover and the quick connection with the connecting pipe of unit, solve takeover and connecting pipe welding need use open flame to produce flame and because of the product leakage problem that flame welding quality problem leads to. Above-mentioned coupling mechanism improves the convenience of installation, because add seal ring in the concave-convex structure, receives outside first buckle and second buckle moreover and presss from both sides tightly, takes over good, the difficult leakage of product of leakproofness with the connecting pipe.

In one embodiment, in order to ensure the firmness of concave-convex nesting fit of the connection pipe and the tightness of the connection part of the connection pipe and the connection pipe, a groove is formed in the outer edge of the end part of the connection pipe, the sealing gasket is arranged in the groove, an inner convex rib is arranged at the end part of the connection pipe, the connection pipe is sleeved outside the connection pipe, the inner convex rib is nested in the groove, and the connection pipe are in sealing connection in a matching mode.

So set up, in embedding the recess that matches with interior rib, make takeover and connecting pipe nested connection, cooperation seal ring's is sealed, guarantees again when takeover and connecting pipe firm connection the leakproofness.

In one embodiment, in order to further ensure the firmness of concave-convex nesting fit of the concave-convex structures of the connecting pipe and the sealing performance of the connecting part of the connecting pipe and the connecting pipe, at least two grooves are formed in the outer edge of the end part of the connecting pipe, and the inner convex ribs matched with the grooves in number are arranged at the end part of the connecting pipe; the sealing gaskets are O-shaped sealing gaskets, and the sealing gaskets are arranged in the grooves.

In one embodiment, in order to ensure the firmness of concave-convex nesting fit of the connection pipe and the connecting pipe and the sealing performance of the connection part of the connection pipe and the connecting pipe, an outer convex rib is expanded radially at the outer edge of the end part of the connection pipe, an inner groove is formed in the end part of the connecting pipe, the sealing gasket is arranged in the inner groove, the connecting pipe is sleeved on the connection pipe in a sleeved mode, the outer convex rib is nested in the inner groove, and the connection pipe and the connecting pipe are connected in a sealing mode in a matched mode.

So set up, with outer protruding muscle embedded in the inner groovy that matches, make takeover and connecting pipe nested connection, the leakproofness is guaranteed again when guaranteeing takeover and connecting pipe firm connection to cooperation seal ring's sealed.

In one embodiment, in order to further ensure the firmness of concave-convex nesting matching of the concave-convex structures of the connecting pipe and the sealing performance of the joint of the connecting pipe and the connecting pipe, at least one outer convex rib is radially expanded at the outer edge of the end part of the connecting pipe, the end part of the connecting pipe is provided with inner grooves matched with the number of the outer convex ribs, the sealing gaskets are O-shaped sealing gaskets, and each inner groove is internally provided with the sealing gasket.

In one embodiment, in order to ensure the firmness of concave-convex nesting fit of the connection pipe and the tightness of the connection part of the connection pipe and the connection pipe, an inverted triangular groove is formed in the outer edge of the end part of the connection pipe, the sealing gasket is arranged at the bottom of the inverted triangular groove, an inverted triangular inner flange is arranged at the end part of the connection pipe, the connection pipe is sleeved on the connection pipe in a sleeved mode, the inverted triangular inner flange is nested in the inverted triangular groove, and the connection pipe are connected in a sealing mode in a matched mode.

According to the arrangement, the inverted triangle inner flange is clamped in the matched inverted triangle groove, so that the connecting pipe is connected with the connecting pipe in an embedded mode, the sealing of the sealing washer is matched, and the tightness is guaranteed while the connecting pipe is firmly connected with the connecting pipe.

In one embodiment, in order to further ensure the firmness of concave-convex nesting matching of the concave-convex structures of the connecting pipe and the sealing performance of the joint of the connecting pipe and the connecting pipe, at least one inverted triangular groove is formed in the outer edge of the end of the connecting pipe, the inverted triangular inner flange matched with the inverted triangular groove in number is arranged at the end of the connecting pipe, the sealing gaskets are O-shaped sealing gaskets, and the sealing gaskets are arranged at the bottom of each inverted triangular groove.

In one embodiment, in order to ensure the firmness of concave-convex nesting matching of the concave-convex structure of the connecting pipe and the sealing performance of the joint of the connecting pipe and the connecting pipe, the outer edge of the end part of the connecting pipe is radially expanded with a positive triangular outer convex edge, the end part of the connecting pipe is provided with a positive triangular inner groove, the sealing gasket is a V-shaped gasket, the V-shaped gasket is arranged on the positive triangular outer convex edge, the connecting pipe is sleeved on the connecting pipe, the positive triangular outer convex edge is nested in the positive triangular inner groove, and the connecting pipe are connected in a sealing mode in a matching mode.

According to the arrangement, the positive triangle outer convex edge is embedded into the matched positive triangle inner groove, so that the connecting pipe is connected with the connecting pipe in a nested manner, and the sealing performance is ensured while the firm connection between the connecting pipe and the connecting pipe is ensured by matching with the sealing of the V-shaped gasket; meanwhile, the connecting part of the connecting pipe and the connecting pipe is provided with the regular triangular groove and the convex edge, and the horizontal micro-liquid pressure in the connecting pipe is decomposed into a component force vertical to the inclined plane of the regular triangular groove and a component force along the inclined plane, so that the pressure on the structure in the horizontal direction is effectively reduced, the stress in the horizontal direction is reduced, and the leakage risk is reduced.

In one embodiment, in order to further ensure the firmness of concave-convex nesting matching of the concave-convex structures of the connecting pipe and the connecting pipe, the sealing performance of the joint of the connecting pipe and reduce the leakage risk, at least one positive triangular outer convex edge is radially expanded on the outer edge of the end part of the connecting pipe, the end part of the connecting pipe is provided with the positive triangular inner grooves matched with the number of the positive triangular outer convex edges, and each positive triangular outer convex edge is provided with the sealing gasket.

In one embodiment, in order to realize the buckling function of the first buckle and the second buckle, the first buckle and the second buckle respectively comprise a locking part, a first locking part and a second locking part which are integrally formed, clamping parts are respectively formed on the first locking part and the second locking part, the fastening part is implanted in the clamping part positioned on the same side of the first buckle and the second buckle, and the locking part is locked on the fastening part, so that the connecting pipe and the connecting pipe are clamped by the first buckle and the second buckle.

So set up, hasp portion is used for the hasp to take over and connecting pipe, and first hasp portion and second hasp portion are used for assembling the fastener, so make first buckle and second buckle can buckle locking.

In one embodiment, in order to improve the fastening strength of the first buckle and the second buckle, the bottom end surfaces of the first locking part and the second locking part are flush, and the thickness of the first locking part is smaller than that of the second locking part.

So set up, asymmetric setting about first latch portion and the second latch portion, fastener and retaining member assembly back, because of the difference of mounted position, first buckle and the second buckle that makes form stress and firmly install.

In one embodiment, in order to further accommodate the assembly of the fastener and the locking accessory, the detent is a threaded hole, and the diameter of the threaded hole provided on the first detent portion is smaller than the diameter of the threaded hole provided on the second detent portion; in one embodiment, the detents are U-shaped detents to facilitate assembly of the fastener and lock attachment and to save material costs.

In one embodiment, in order to facilitate the assembly of the locking member and the fastening member and save materials, the first locking part and the second locking part are symmetrically arranged at two ends of the locking part, the bottom end surfaces of the first locking part and the second locking part are flush, and the thicknesses of the first locking part and the second locking part are equal; the screens are symmetrically arranged in U-shaped grooves on the first locking part and the second locking part.

In one embodiment, in order to meet the locking requirement and ensure the locking to be firm, the fastening piece is a bolt, or the locking piece is a nut.

Drawings

FIG. 1 is a structural view of a coupling mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the connection pipe and the connection pipe sleeve according to an embodiment of the present invention;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a front view of the connection tube and the connection tube sleeve according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a front view of the connection tube and the connection tube sleeve according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view C-C of FIG. 7;

fig. 9 is a front view of the connection tube and the connection tube sleeve according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view D-D of FIG. 9;

FIG. 11 is an assembled view of a first buckle and a second buckle according to an embodiment of the present invention;

FIG. 12 is a structural view of the first/second clasp of FIG. 11;

FIG. 13 is an assembled view of a first buckle and a second buckle according to another embodiment of the present invention;

fig. 14 is a structural view of the first/second clasp of fig. 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Fig. 1 is a structural view of a connection mechanism according to an embodiment of the present invention. The illustrated connecting mechanism 100 for the inlet and outlet connecting pipes and the connecting pipes of the heat exchanger quickly connects the heat exchanger and the pipelines of the client unit by matching the end parts of the inlet and outlet pipes of the heat exchanger with the end part of the connecting pipe of the client unit in a concave-convex groove mode and in a mechanical clamping mode, thereby avoiding open fire, avoiding the product leakage problem caused by the flame welding quality problem and improving the installation convenience; simultaneously, seal ring has been added in the draw-in groove of tongue and groove, receives outside buckle moreover and presss from both sides tightly, solves the leakage problem that the pipe connection exists.

Referring to fig. 1, the embodiment of the present invention provides a connection mechanism 100 for a heat exchanger inlet/outlet connection pipe and a connection pipe, including a connection pipe 1 and a connection pipe 2, which are installed on an inner jacket and an outer jacket, wherein an end portion (axial direction) of the connection pipe 1 and an end portion (axial direction) of the connection pipe 2 are engaged with each other through a concave-convex structure 200, and are in concave-convex nesting fit, and are connected to each other through a sealing washer 3 installed on the concave-convex structure 200, an end portion outer side (radial periphery) where the connection pipe 1 and the connection pipe 2 are connected is further provided with a first buckle 4 and a second buckle 5, and the first buckle 4 and the second buckle 5 are locked by a fastening member 6.

In the connecting mechanism 100, the end part of the connecting pipe 1 is matched with the end part of the connecting pipe 2 through the concave-convex structure, the first buckle 4 and the second buckle 5 are additionally arranged to be clamped tightly, the quick connection between the outlet connecting pipe (connecting pipe 1) of the heat exchanger and the connecting pipe (connecting pipe 2) of the unit is realized, and the problems that the welding of the connecting pipe and the connecting pipe needs to use open flame to generate flame and the product leakage is caused by the flame welding quality problem are solved. Above-mentioned coupling mechanism 100 improves the convenience of installation, because seal ring 3 has been added in concave-convex structure 200, receives outside first buckle 4 and second buckle 5 moreover and presss from both sides tightly, takes over 1 and is good with the leakproofness of connecting pipe 2, the product is difficult for leaking.

Fig. 2 is a schematic structural view of the connection pipe and the connection pipe sleeve according to an embodiment of the present invention, and fig. 3-4 are a front view and a sectional view a-a of fig. 2, respectively.

It can be understood that, in order to ensure the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the adapter tube 1 and the connecting tube 2 and the sealing performance of the joint of the adapter tube 1 and the connecting tube 2, in one embodiment, a groove 101 is formed at the outer edge (radially outer side) of the end portion of the adapter tube 1, a sealing gasket 3 is arranged in the groove 101, an inner convex rib 201 is arranged at the end portion of the connecting tube 2, the connecting tube 2 is externally sleeved on the adapter tube 1, the inner convex rib 201 is nested in the groove 101, and the adapter tube 1 and the connecting tube 2.

It should be understood that, with such an arrangement, the inner convex rib 201 is embedded in the matched groove 101, so that the connection pipe 1 and the connection pipe 2 are connected in a nested manner, and the sealing performance is ensured while the connection pipe 1 and the connection pipe 2 are firmly connected by matching with the sealing of the sealing washer 3, thereby avoiding the leakage problem. It should be noted that the aperture of the inner hole of the connection tube 2 in this embodiment is slightly larger than the outer diameter of the connection tube 2, and the connection tube 1 may be sleeved outside the connection tube 2, and at this time, the inner rib 201/groove 101 may be disposed on the connection tube 1 and the connection tube 2 according to the requirement.

In one embodiment, the outer edge of the end part of the adapter tube 1 is provided with at least two grooves 101, preferably, the number of the grooves 101 is 2-3, and the end part of the connecting tube 2 is provided with inner convex ribs 201 the number of which is matched with that of the grooves 101; in this embodiment, the sealing washers 3 are O-shaped sealing washers, and each groove 101 is provided with a sealing washer 3 therein, and meanwhile, the sealing washer 3 is sleeved on the connecting pipe 2, that is, on the inner convex rib 201. It can be understood that, with such an arrangement, the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the adapter tube 1 and the connecting tube 2 and the sealing performance of the joint of the adapter tube 1 and the connecting tube 2 can be further ensured.

Fig. 5 is a front view of the connection pipe and the connection pipe sleeve according to an embodiment of the present invention, and fig. 6 is a sectional view taken along line B-B of fig. 5.

It can be understood that, in order to ensure the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the adapter tube 1 and the connecting tube 2 and the sealing performance of the joint of the adapter tube 1 and the connecting tube 2, in one embodiment, the outer edge (radially outer side) of the end part of the adapter tube 1 is radially expanded with an outer convex rib 102, the end part of the connecting tube 2 is provided with an inner groove 202, a sealing gasket 3 is arranged in the inner groove 202, the connecting tube 2 is externally sleeved on the adapter tube 1 and the inner convex rib 201 is nested in the groove 101, and the adapter tube 1 and the connecting tube 2 are hermetically connected.

It should be understood that, with this arrangement, the outer ribs 102 are embedded in the matching inner grooves 202, so that the connection pipe 1 and the connection pipe 2 are connected in a nested manner, and with the sealing of the sealing washer 3, the tightness is ensured while the connection pipe 1 and the connection pipe 2 are firmly connected, thereby avoiding the leakage problem.

In one embodiment, at least one external convex rib 102 is radially expanded at the outer edge of the end part of the adapter tube 1, preferably, the number of the external convex ribs 102 is controlled to be 1-3, and the end part of the connecting tube 2 is provided with an internal groove 202 matched with the number of the external convex ribs 102; in the present embodiment, the sealing washer 3 is an O-ring, and the sealing washer 3 is disposed in each inner groove 202, and meanwhile, the sealing washer 3 is sleeved on the connecting tube 2, that is, in the inner groove 202. It can be understood that, with such an arrangement, the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the adapter tube 1 and the connecting tube 2 and the sealing performance of the joint of the adapter tube 1 and the connecting tube 2 can be further ensured.

Fig. 7 is a front view of the connection pipe and the connection pipe sleeve according to an embodiment of the present invention, and fig. 8 is a cross-sectional view of C-C of fig. 7.

It can be understood that, in order to ensure the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the adapter tube 1 and the connecting tube 2 and the tightness of the joint of the adapter tube 1 and the connecting tube 2, in one embodiment, the outer edge (radially outer side) of the end part of the adapter tube 1 is provided with an inverted triangle groove 103, the sealing gasket 3 is arranged at the bottom of the inverted triangle groove 103, the end part of the connecting tube 2 is provided with an inverted triangle inner flange 203, the connecting tube 2 is sleeved on the adapter tube 1, the inverted triangle inner flange 203 is nested in the inverted triangle groove 103, and the adapter tube 1 is in sealing connection with.

It should be understood that, with such an arrangement, the inverted-triangle inner flange 203 is clamped in the matched inverted-triangle groove 103, so that the connection pipe 1 and the connection pipe 2 are connected in a nested manner, and the sealing performance is ensured while the connection pipe 1 and the connection pipe 2 are firmly connected by matching with the sealing of the sealing washer 3, thereby avoiding the leakage problem.

In one embodiment, at least one inverted triangle groove 103 is formed on the outer edge (radially outer side) of the end of the adapter tube 1, preferably, the number of the inverted triangle grooves 103 is controlled to be 1-3, and the end of the adapter tube 2 is provided with inverted triangle inner flanges 203, the number of the inverted triangle inner flanges being matched with the number of the inverted triangle grooves 103, in this embodiment, the sealing gaskets 3 are O-shaped sealing gaskets 3, the bottom of each inverted triangle groove 103 is provided with the sealing gasket 3, and meanwhile, the sealing gasket 3 is sleeved on the adapter tube 2, that is, sleeved on the inverted triangle inner flanges 203. It can be understood that the arrangement can further ensure the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the adapter tube 1 and the connecting tube 2 and the tightness of the joint of the adapter tube 1 and the connecting tube 2.

Fig. 9 is a front view of a connection pipe and a connection pipe sleeve according to an embodiment of the present invention, and fig. 10 is a cross-sectional view of fig. 9 taken along line D-D.

It can be understood that, in order to ensure the firmness of the concave-convex nesting fit of the concave-convex structure 200 of the connecting pipe 1 and the connecting pipe 2 and the sealing performance of the joint of the connecting pipe 1 and the connecting pipe 2, in one embodiment, the outer edge of the end of the connecting pipe 1 is radially expanded with a positive triangular outer convex ridge 104, the end of the connecting pipe 2 is provided with a positive triangular inner concave groove 204, the sealing gasket 3 is a V-shaped gasket, the V-shaped gasket is arranged on the positive triangular outer convex ridge 104, the connecting pipe 2 is externally sleeved on the connecting pipe 1, and the positive triangular outer convex ridge 104 is nested in the positive triangular inner concave groove 204, so that the connecting pipe 1 and the connecting pipe 2.

It is to be understood that, with the arrangement, the positive triangular outer convex ridge 104 is embedded in the matched positive triangular inner groove 204, so that the connecting pipe 1 is connected with the connecting pipe 2 in a nested manner, and the sealing performance is ensured while the firm connection between the connecting pipe 1 and the connecting pipe 2 is ensured by matching with the sealing of the V-shaped gasket, thereby avoiding the leakage problem; meanwhile, the connecting part of the connecting pipe 1 and the connecting pipe 2 is provided with the regular triangular groove 204 and the convex edge 104, and the pressure of the small liquid in the horizontal direction in the connecting pipe 1 is decomposed into a component force vertical to the inclined plane of the regular triangular groove 204 and a component force along the inclined plane, so that the pressure of the horizontal direction on the structure is effectively reduced, the stress in the horizontal direction is reduced, and the leakage risk is reduced.

In one embodiment, the outer edge of the end of the adapter tube 1 is radially expanded with at least one outer convex triangular ridge 104, preferably, the number of the outer convex triangular ridges 104 is controlled to be 1-3, the end of the adapter tube 2 is provided with inner concave triangular grooves 204 matching with the number of the outer convex triangular ridges 104, and each outer convex triangular ridge 104 is provided with a sealing gasket 3. It can be understood that the arrangement can further ensure the firmness of the concave-convex nesting fit of the connection pipe 1 and the concave-convex structure 20 of the connection pipe 2, the tightness of the joint of the connection pipe 1 and the connection pipe 2 and reduce the leakage risk.

Fig. 11 is an assembly view of a first buckle and a second buckle according to an embodiment of the present invention, fig. 12 is a structural view of the first buckle/the second buckle in fig. 11, fig. 13 is an assembly view of the first buckle and the second buckle according to another embodiment of the present invention, and fig. 14 is a structural view of the first buckle/the second buckle in fig. 13.

Referring to fig. 11 to 14, in order to realize the buckling function of the first buckle 4 and the second buckle 5, each of the first buckle 4 and the second buckle 5 includes an integrally formed locking portion 41, a first locking portion 42 and a second locking portion 43, each of the first locking portion 42 and the second locking portion 43 is formed with a locking portion 44, a fastening member 6 is implanted into the locking portion 44 on the same side of the first buckle 4 and the second buckle 5, and the locking member 7 is locked to the fastening member 6, so that the first buckle 4 and the second buckle 5 can clamp the adapter tube 1 and the connection tube 2.

It will be appreciated that the arrangement is such that the locking portion 41 is used to lock the adapter tube 1 and the connector tube 2, and the first locking portion 42 and the second locking portion 43 are used to assemble the fastening member 6, thus enabling the first catch 4 and the second catch 5 to be locked by snap-fit.

It should be understood that the positional relationship between the first buckle 4 and the second buckle 5 is opposite, that is, the locking system can be reversely adjusted according to the assembling relationship, that is, the second buckle 5 is disposed on the upper portion of the first buckle 2, and other parts correspondingly assembled are changed accordingly. The above-mentioned relative position relationship changes are one of the locking relationships of the first buckle 4 and the second buckle 5 explained in the present embodiment.

Referring to fig. 11-12, in one embodiment, in order to improve the fastening strength of the first buckle 4 and the second buckle 5, the bottom end surfaces of the first locking portion 42 and the second locking portion 43 are flush, and the thickness of the first locking portion 42 is smaller than that of the second locking portion 43, that is, the first buckle 4 and the second buckle 5 are not symmetrical left and right in structure.

It should be understood that, with reference to fig. 11-12, the first locking portion 41 and the second locking portion 42 are arranged asymmetrically, and after the fastening member 6 and the locking member 7 are assembled, the first buckle 4 and the second buckle 5 are stressed and firmly mounted due to the difference of the assembling positions.

In one embodiment, in order to further accommodate the assembly of the fastening member 6 and the locking attachment 7, the detents 44 are screw holes (refer to fig. 1), and the diameter of the screw hole (fastening member 6 screw hole) provided on the first locking portion 42 is smaller than the diameter of the screw hole (countersunk bolt hole) provided on the second locking portion 42. It will be appreciated that in other embodiments, in one embodiment, the detents 44 are U-shaped detents to facilitate assembly of the fastener 6 and locking attachment 7 and to save material costs.

Referring to fig. 13-14, in one embodiment, to facilitate the assembly of the locking member 7 and the fastening member 6 and save material, the first locking portion 42 and the second locking portion 42 are symmetrically disposed at two ends of the locking portion 41, and the bottom end surfaces of the first locking portion 42 and the second locking portion 43 are flush, and the first locking portion 42 and the second locking portion 43 have the same thickness; the locking portions 44 are U-shaped grooves symmetrically formed on the first locking portion 42 and the second locking portion 43.

It is understood that in other embodiments, the fastening member 6 satisfying the requirement of connecting the first buckle 4 and the second buckle 5 is suitable for the fastening member 6 of the embodiment. For example, bolts, screws, pins, and other cylindrical connectors may be selected. Meanwhile, the fastener 6 can also be a connecting piece in assembling modes such as a thread type, a self-tapping type and a buckle type. The locking member 7 that can cooperate with the fastening member 6 to lock the first buckle 4 and the second buckle 5 is suitable for the locking member 7 of the present embodiment, such as an optional nut and a nut.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (14)

1. The utility model provides a coupling mechanism of takeover and connecting pipe is imported and exported to heat exchanger, includes takeover and the connecting pipe that the endotheca was established, its characterized in that, the tip of takeover with the tip of connecting pipe is through the unsmooth nested cooperation of concave-convex structure, and through establishing seal ring sealing connection on the concave-convex structure, the takeover with the tip outside that the connecting pipe is connected still is equipped with first buckle and second buckle, first buckle with the second buckle passes through fastener and lock accessory locking and buckle clamp tightly the takeover with the connecting pipe.

2. The mechanism as claimed in claim 1, wherein a groove is formed on an outer edge of an end of the connection pipe, the sealing gasket is disposed in the groove, an inner rib is disposed on an end of the connection pipe, the connection pipe is sleeved on the connection pipe and the inner rib is nested in the groove to match with the connection pipe and the connection pipe in a sealing manner.

3. The connecting mechanism of the inlet and outlet connecting pipes and the connecting pipes of the heat exchanger as claimed in claim 2, wherein at least two grooves are formed on the outer edge of the end part of the connecting pipe, and the inner ribs are arranged on the end part of the connecting pipe, and the number of the inner ribs is matched with that of the grooves; the sealing gaskets are O-shaped sealing gaskets, and the sealing gaskets are arranged in the grooves.

4. The connecting mechanism for an inlet/outlet connecting pipe and a connecting pipe of a heat exchanger as claimed in claim 1, wherein the outer edge of the end of the connecting pipe is radially expanded to form an external convex rib, the end of the connecting pipe is provided with an internal groove, the sealing gasket is arranged in the internal groove, the connecting pipe is sleeved on the connecting pipe and the external convex rib is nested in the internal groove, and the connecting pipe are in sealing connection.

5. The mechanism as claimed in claim 4, wherein the outer edge of the end of the connection pipe is radially expanded to form at least one of the external ribs, the end of the connection pipe is provided with the internal grooves, the number of the internal grooves is matched with that of the external ribs, the sealing washers are O-shaped sealing washers, and each internal groove is provided with the sealing washer.

6. The connecting mechanism for an inlet/outlet connecting pipe and a connecting pipe of a heat exchanger as claimed in claim 1, wherein an outer edge of an end of the connecting pipe is formed with an inverted triangular groove, the sealing gasket is arranged at the bottom of the inverted triangular groove, an inner inverted triangular flange is arranged at an end of the connecting pipe, the connecting pipe is sleeved on the connecting pipe and the inner inverted triangular flange is nested in the inverted triangular groove, and the connecting pipe are in sealing connection.

7. The mechanism as claimed in claim 6, wherein the connecting tube has at least one inverted triangular groove formed on the outer edge of the end of the connecting tube, the connecting tube has an inverted triangular inner flange with a number matching the number of the inverted triangular grooves, the sealing gaskets are O-shaped sealing gaskets, and the sealing gasket is disposed on the bottom of each inverted triangular groove.

8. The mechanism as claimed in claim 1, wherein the outer edge of the end of the connection pipe is radially expanded to form a positive triangular outer ridge, the end of the connection pipe is provided with a positive triangular inner groove, the sealing gasket is a V-shaped gasket, the V-shaped gasket is arranged on the positive triangular outer ridge, the connection pipe is sleeved on the connection pipe, and the positive triangular outer ridge is nested in the positive triangular inner groove, so that the connection pipe is connected with the connection pipe in a sealing manner.

9. The mechanism as claimed in claim 8, wherein the connecting tube has at least one convex triangular ridge radially expanded at the outer edge of the connecting tube, the connecting tube has inner triangular grooves at the end thereof, and each convex triangular ridge has the sealing gasket.

10. The connecting mechanism for an inlet/outlet connection pipe and a connection pipe of a heat exchanger as claimed in claim 1, wherein the first and second fasteners each comprise an integrally formed locking portion, a first locking portion and a second locking portion, each of the first and second locking portions has a clamping portion, the clamping portion on the same side of the first and second fasteners is implanted with the fastener, and the fastener is locked to the fastener, so that the first and second fasteners clamp the connection pipe and the connection pipe.

11. The connecting mechanism for the inlet/outlet connecting pipe and the connecting pipe of the heat exchanger as claimed in claim 10, wherein the bottom end surfaces of the first locking portion and the second locking portion are flush, and the thickness of the first locking portion is smaller than that of the second locking portion.

12. The connecting mechanism for an inlet/outlet connection pipe and a connection pipe of a heat exchanger as claimed in claim 11, wherein the locking portion is a screw hole, and the screw hole provided in the first locking portion has a smaller diameter than the screw hole provided in the second locking portion; or, the screens are all U-shaped card slots.

13. The connecting mechanism for an inlet/outlet connecting pipe and a connecting pipe of a heat exchanger as claimed in claim 10, wherein the first locking portion and the second locking portion are symmetrically arranged at two ends of the locking portion, bottom end surfaces of the first locking portion and the second locking portion are flush, and thicknesses of the first locking portion and the second locking portion are equal; the screens are symmetrically arranged in U-shaped grooves on the first locking part and the second locking part.

14. The connecting mechanism of the inlet and outlet connecting pipe and the connecting pipe of the heat exchanger as claimed in any one of claims 10 to 13, wherein the fastening member is a bolt, or the locking member is a nut.

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