CN217056745U - Piping device - Google Patents

Abstract

The utility model discloses a piping arrangement, piping arrangement includes: a first body having a first cavity; a second body having a second cavity, each of the first and second cavities having an opening, the first and second bodies being fixedly connected with the openings of the first and second cavities facing each other such that the first and second cavities constitute a tube portion, wherein an abutment region is formed where the openings of the first and second cavities abut; and a bearing portion disposed within the tube portion and at least partially obscuring the adjoining area. Therefore, the bearing part is arranged in the adjacent area to improve the bearing capacity of the first cavity and the second cavity at the adjacent area, so that the problems of cracking and the like at the joint of the first cavity and the second cavity are avoided, and the structural reliability of the pipe part formed by the piping device is improved.

Description

Piping device

Technical Field

The utility model belongs to the technical field of air conditioning equipment makes and specifically relates to a piping arrangement is related to.

Background

At present, a piping in an air conditioning system is generally manufactured by combining and welding two sheet metal stamping parts.

The piping is arranged in supplying the high-pressure gaseous cold medium among the air conditioning system to pass through, because the panel beating stamping workpiece adopts the welded mode to link to each other, and the bearing capacity at the welded connection department of two panel beating stamping workpieces is weak, has the risk of fracture.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a piping device having a strong piping pressure-receiving capacity.

According to the utility model discloses piping arrangement, include: a first body having a first cavity; a second body having a second cavity, each of the first and second cavities having an opening, the first and second bodies being fixedly connected with the openings of the first and second cavities facing each other such that the first and second cavities constitute a tube portion, wherein an abutment region is formed where the openings of the first and second cavities abut; and a bearing portion disposed within the tube portion and at least partially obscuring the adjoining area.

According to the utility model discloses piping device through set up the bearing portion in order to promote the bearing capacity of first cavity and second cavity in adjacent region department in adjacent region, avoids appearing the scheduling problem that ftractures in the junction of first cavity and second cavity, promotes the structural reliability of the pipe portion that piping device formed.

According to some embodiments of the invention, the abutment region and the pressure-bearing portion all extend in the axial direction of the tube portion.

According to some embodiments of the utility model, the bearing portion with at least partial internal face laminating of pipe portion.

According to the utility model discloses a some embodiments, the bearing structure is the bearing plate, the bearing plate respectively with the inner wall of first cavity with the inner wall laminating of second cavity is suitable for sheltering from the border region.

According to some embodiments of the invention, the bearing plate is configured as an arc plate.

According to some embodiments of the invention, the curved plate is configured as a plate-like structure with a cross-section in a major arc.

According to some embodiments of the invention, the arc is configured as a plate-like structure with a cross-section of a minor arc, and the arc is two and is used for shielding two of the adjoining regions, respectively.

According to some embodiments of the invention, the pressure-bearing portion is configured as a pressure-bearing pipe.

According to the utility model discloses a some embodiments, the periphery wall of pressure-bearing pipe with at least some internal face laminating of pipe portion.

According to the utility model discloses a some embodiments, the outer peripheral face of pressure-bearing pipe is equipped with the solder layer, the solder layer be used for with the pressure-bearing pipe with first cavity with at least one welding in the second cavity links to each other.

According to the utility model discloses a some embodiments, it is a plurality of, a plurality of to hold the splenium and be in the axial direction interval of pipe portion is arranged.

According to the utility model discloses a some embodiments the pipe portion by the pressure-bearing portion shelters from the regional pipeline section department of adjacency, the pipeline section is D at axial direction's cross sectional shape equivalent diameter size, and satisfies D and is greater than or equal to 30 mm.

According to some embodiments of the utility model, the first body has a plurality ofly first cavity, the second body has a plurality ofly the second cavity, it is a plurality of first cavity is with a plurality of second cavity one-to-one, and by a plurality of first cavity and a plurality of the second cavity constitutes be provided with in at least one in the pipe section hold the splenium.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a first schematic structural diagram of a piping apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a piping apparatus according to an embodiment of the present invention;

fig. 3 is a first schematic view of the cooperation between the pressure-bearing portion and the first body and the second body according to the embodiment of the present invention;

fig. 4 is a first front view of a piping arrangement according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

fig. 6 is a schematic structural view of a piping device according to another embodiment of the present invention;

fig. 7 is a second schematic view of the fitting of the pressure receiving portion with the first body and the second body in the piping apparatus shown in fig. 6.

Reference numerals are as follows:

a piping device 100,

A first body 10, a first cavity 11, a first chamfer 12,

A second body 20, a second cavity 21, a second chamfer 22,

A pressure receiving portion 30, an adjacent region 40, and a tube portion 50.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A piping device 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 7.

According to the utility model discloses piping arrangement 100 includes: a first body 10, a second body 20, and a pressure receiving portion 30.

Referring to fig. 1, 2, 3 and 5, the first body 10 has a first cavity 11, the second body 20 has a second cavity 21, each of the first cavity 11 and the second cavity 21 has an opening, and the first body 10 and the second body 20 are fixedly connected. When the first body 10 is fixedly connected with the second body 20, the opening of the first cavity 11 and the opening of the second cavity 21 are oppositely arranged, so that the first cavity 11 and the second cavity 21 can constitute the tube part 50, and as can be seen from fig. 5, the abutting area 40 is formed at the abutting position of the openings of the first cavity 11 and the second cavity 21.

It should be noted that the pipe portion 50 formed by the first chamber 11 and the second chamber 21 may be applied to an air conditioning apparatus and may serve as a flow passage for high-pressure gas such as refrigerant, and when the refrigerant medium flows through the flow passage formed by the pipe portion 50, the gaseous refrigerant medium may be filled in the pipe portion 50, so that the internal pressure of the pipe portion 50 is high and the pipe portion is always in a high-pressure state. Thus, the pipe portion 50 needs to have a strong pressure-bearing capacity to prevent the first and second cavities 11 and 21 from cracking or the like at the abutting region 40.

Referring to fig. 5, the first cavity 11 and the second cavity 21 have opposite openings, when the first body 10 is coupled with the second body 20, the openings of the first cavity 11 and the second cavity 21 are opposite, and the first cavity 11 and the second cavity 21 may form a tubular structure (i.e., a tube portion 50). The opening size of the first cavity 11 is the same as the opening size of the second cavity 21, so that the inner wall of the first cavity 11 and the inner wall of the second cavity 21 can be in close to smooth transition, the smoothness of the inner wall surface of the lifting pipe part 50 is improved, and the pressure bearing effect of the inner wall surface of the lifting pipe part 50 is better.

It will be appreciated that there is a transition region (i.e. abutment region 40) at the location of abutment of the first cavity 11 and the second cavity 21. The first cavity 11 is recessed from the first body 10 to a side far from the second body 20 to form a cavity structure with an opening, a first chamfer 12 is formed at a transition joint of the first cavity 11 and the first body 10, the second cavity 21 is recessed from the second body 20 to a side far from the first body 10 to form a cavity structure with an opening, and a second chamfer 22 is formed at a transition joint of the second cavity 21 and the second body 20. When the first cavity 11 is mated with the second cavity 21, the first chamfer 12 and the second chamfer 22 are adjacently disposed, so that a region (i.e., an abutting region 40) recessed further outward with respect to the inner wall surfaces of the first cavity 11 and the second cavity 21 is formed at the first chamfer 12 and the second chamfer 22.

Here, the abutting region 40 is shielded by the pressure receiving portion 30 by providing the pressure receiving portion 30 in the pipe portion 50. When the gaseous refrigerant medium is filled in the inner cavity structure of the pipe portion 50, the wall surface of the pressure-receiving portion 30 facing the abutting region 40, the inner wall of the first chamfer 12 and the inner wall of the second chamfer 22 jointly define a flow passage having a small bore size, so that the pressure received at the abutting region 40 can be reduced, and the pressure-receiving capacity of the pipe portion 50 can be improved.

It should be further noted that, if the pressure-bearing portion 30 is not provided in the tube portion 50, the path through which the gaseous refrigerant medium flows is defined only by the first cavity 11 and the second cavity 21, and the gaseous refrigerant medium is filled in the inner cavity structure of the tube portion 50 and exerts a force on the first chamfer 12 and the second chamfer 22 at the abutting region 40 to move away from each other, so that a higher connecting strength is required at the abutting region 40 to ensure the reliability of the connection between the first cavity 11 and the second cavity 21. Meanwhile, due to the formation of the abutting region 40, the inner cavity structure of the tube portion 50 is stressed unevenly, and the pressure at the abutting region 40 will generate sudden changes, further affecting the connection reliability of the first cavity 11 and the second cavity 21.

This application is through setting up bearing portion 30 to shelter from adjacent area 40 through bearing portion 30, with rationally reduce the pressure that adjacent area 40 department bore, thereby can reduce adjacent area 40 department to the requirement of joint strength, reduce piping device 100's the processing degree of difficulty.

Wherein the size of the abutting region 40 is related to the sectional size of the pipe 50 in the axial direction, when the sectional size of the pipe 50 is larger, the sizes of the first chamfer 12 and the second chamfer 22 are also increased, so that the size of the abutting region 40 is increased, and the sudden change of pressure at the abutting region 40 is more obvious, and the force uniformity inside the pipe 50 is influenced. Thus, at the abutment zone 40 where the cross-sectional size of the tubular section 50 is larger, it is more necessary to provide the pressure-bearing portion 30 to increase the pressure-bearing capacity at the abutment zone 40 or reasonably reduce the pressure received at the abutment zone 40.

According to the utility model discloses piping arrangement 100 through set up the bearing portion 30 in order to promote the bearing capacity of first cavity 11 and second cavity 21 in border on regional 40 department in border on regional 40, avoids appearing the fracture scheduling problem in the junction of first cavity 11 and second cavity 21, promotes the structural reliability of the pipe portion 50 that piping arrangement 100 formed.

As shown in fig. 3 and 7, in some embodiments of the present invention, the abutting region 40 and the pressure receiving portion 30 both extend along the axial direction of the pipe portion 50, so that the abutting region 40 and the pressure receiving portion 30 can be disposed in correspondence with each other in the axial direction of the pipe portion 50, and the abutting region 40 is sufficiently shielded by the pressure receiving portion 30.

Referring to fig. 1, 2 and 3, the pipe 50 formed by the first chamber 11 and the second chamber 21 may be configured as a filter pipe, an oil separator pipe, etc., and the pipes may be respectively applied to an air treatment device as a pipe structure for circulating a refrigerant medium.

Further, when the pipe portion 50 formed by the first cavity 11 and the second cavity 21 has a pipe section with a larger hole size, the size of the adjacent area 40 at the position of the pipe section is also larger than the size of the adjacent area 40 corresponding to other pipe sections with a smaller hole size, so that the pressure bearing capacity at the adjacent area 40 of the pipe section is poor, the pressure jump is obvious, and the adjacent area 40 needs to be shielded by arranging the pressure bearing portion 30 to adjust the flow path of the refrigerant medium in the pipe portion 50, so as to improve the pressure bearing effect at the adjacent area 40.

Referring to fig. 1 to 4 of the specification, the first body 10 and the second body 20 are configured as metal pieces, and the first cavity 11 and the second cavity 21 may be formed by a press process. Because the first cavity and the second cavity are formed by stamping, chamfer structures are formed at the joint of the first cavity 11 and the first body 10 and the joint of the second cavity 21 and the second body 20.

Further, the first body 10 and the second body 20 are adapted in size, the first body 10 and the second body 20 are each configured as a plate-shaped metal member, and when the first body 10 and the second body 20 are correspondingly arranged and coupled in the thickness direction, the opening of the first cavity 11 is disposed opposite to the opening of the second cavity 21, and at this time, the first cavity 11 and the second cavity 21 may be connected by a welding process to constitute the tube portion 50.

In some embodiments of the present invention, the pressure-receiving portion 30 is attached to at least a part of the inner wall surface of the pipe portion 50, so that the pressure-receiving portion 30 is connected to the inner wall surface of the pipe portion 50, thereby fixing the pressure-receiving portion 30 in the pipe portion 50.

As shown in fig. 5, the pressure receiving portion 30 may be attached to the inner wall surface of the first cavity 11 and the inner wall surface of the second cavity 21, respectively, so as to shield the adjacent region 40, and the reliability of connection between the pressure receiving portion 30 and the pipe portion 50 may be improved by the manner of attaching and fitting, and the volume of the inner cavity space of the pipe portion 50 occupied by the pressure receiving portion 30 may be reasonably saved.

In some embodiments of the present invention, the bearing portion 30 is configured as a bearing plate which is respectively attached to the inner wall of the first cavity 11 and the inner wall of the second cavity 21 and is adapted to block the abutting area 40. Wherein, construct the bearing portion 30 for platelike structure and make the cavity space looks adaptation in bearing plate and the pipe portion 50, promote the bearing plate and the inseparable nature of cooperation of the inner wall of closing when guaranteeing that the bearing plate shelters from the effect to adjacent region 40, promote the bearing effect of bearing portion 30.

The utility model discloses an in some embodiments, the bearing plate structure is the metal sheet, and the metal sheet can pass through the welded mode and link to each other with tub portion 50 is fixed, reduces the installation degree of difficulty of bearing plate to promote bearing plate and tub portion 50's reliability of being connected.

In some embodiments of the present invention, the thickness of the pressure-bearing plate is within the range of 2mm to 5mm, so that the inner space of the pipe portion 50 occupied by the pressure-bearing plate can be saved while the structural strength of the pressure-bearing plate is ensured. Preferably, the thickness of the pressure plate ranges from 3mm to 4 mm.

In some embodiments of the present invention, the bearing plate is configured as an arc plate. Accordingly, the tube portion 50 constituted by the first cavity 11 and the second cavity 21 has an arc-shaped mating surface, and the arc-shaped mating surface is formed at a position adjacent to the abutting region 40 of the first cavity 11, the second cavity 21. The outer surfaces of the arc plates can be respectively attached to the arc fitting surfaces of the first cavity 11 and the second cavity 21, and block the adjacent area 40.

Wherein, the tube portion 50 may be formed with a hollow chamber having a cylindrical shape, and the arc plate is at least partially attached to an inner wall of the hollow chamber to shield the adjacent region 40.

In a further embodiment of the present invention, the arc plate is constructed in a plate-like structure having a major arc cross section. When the arc segment of the arc is configured as a major arc, only one arc needs to be arranged in the pipe portion 50, and the two abutting regions 40 which are oppositely arranged can be shielded by the arc.

As can be understood from fig. 3 and 5, the two abutting regions 40 are provided, the two abutting regions 40 are respectively defined by the chamfered structures at the openings of the first cavity 11 and the second cavity 21, and the two abutting regions 40 are oppositely arranged.

In some embodiments of the present invention, the arc-shaped plate is a plate-shaped structure with a cross section of a minor arc, and the two arc-shaped plates are used for shielding two adjacent regions 40 respectively, so as to improve the pressure-bearing capacity of the lift pipe portion 50 at the adjacent region 40.

It can be understood that, because the arc segments of the arc plates are configured as minor arcs, shielding of two oppositely disposed adjacent regions 40 at the same time cannot be satisfied by only one arc plate, so that shielding of two oppositely disposed adjacent regions 40 needs to be performed by providing two arc plates respectively.

As shown in fig. 3, in some embodiments of the present invention, the pressure-bearing portion 30 is configured as a pressure-bearing pipe, the pressure-bearing pipe is configured as a hollow tubular structure, and a passage through which the refrigerant medium flows is defined by the pressure-bearing pipe and the pipe portion 50 together. Wherein, the pressure-bearing pipe has simple structure and strong pressure-bearing capacity, and the way of arranging the pressure-bearing pipe in the pipe part 50 is simple.

In a further embodiment of the present invention, the peripheral wall of the pressure-bearing pipe is attached to at least part of the inner wall surface of the pipe portion 50. It will be appreciated that the abutment region 40 is formed by two arcuate faces (inner faces of the chamfered formations) of small dimensions and having different concave directions, and the pressure-bearing tube may be provided with increased pressure-bearing capacity at the abutment region 40 by masking the abutment region 40, without the peripheral wall of the pressure-bearing tube having to engage the wall at the abutment region 40, and with the peripheral wall of the pressure-bearing tube engaging only part of the inner wall surface of the tube portion 50. The peripheral wall of the pressure-receiving pipe may be formed with a ridge structure conforming to the shape of the abutment region 40 to fill the abutment region 40, and at this time, the peripheral wall of the socket may be completely fitted to the inner wall surface of the pipe portion 50.

Wherein, the cross sectional shape of pressure-bearing pipe and the cross sectional shape looks adaptation of pipe portion department that pipe portion 50 set up the pressure-bearing pipe to the two size is the same, so that set up the laminating of the internal face of the periphery wall of pressure-bearing pipe and pipe portion 50. Because the size looks adaptation of pressure-bearing pipe and pipeline section to the pressure-bearing pipe can only arrange the pipe portion 50 in through the mode of inlaying established, need not further fixed, reduces the assembly degree of difficulty of pressure-bearing pipe.

It will be appreciated that, in conjunction with fig. 1 and 3, when the pipe section of the pipe portion 50 where the pressure-bearing pipe is required to be provided is constructed to have a cylindrical main body, the pressure-bearing pipe may be constructed in a hollow cylindrical pipe body structure.

The utility model discloses an in some embodiments, the outer peripheral face of pressure-bearing pipe is equipped with the solder layer, and the solder layer is arranged in linking to each other pressure-bearing pipe with at least one welding in first cavity 11 and the second cavity 21 to can be connected pressure-bearing pipe and pipe portion 50 through the welded mode and fix, promote pressure-bearing pipe and pipe portion 50's reliability of being connected.

Further, since the pressure-bearing pipe is connected to the pipe portion 50 by welding, which is equivalent to increase the wall thickness of the pipeline structure composed of the first cavity 11, the second cavity 21 and the pressure-bearing pipe, the structural strength and the pressure-bearing capacity of the pipeline structure are further improved.

Specifically, a profiling solder layer may be disposed on the outer circumferential wall of the pressure-bearing pipe during processing, and the solder may be melted by heating, so as to connect the pressure-bearing pipe to at least one of the first cavity 11 and the second cavity 21 by welding, thereby increasing the overall thickness of the pipe structure.

Wherein the pressure-bearing pipe shields the abutting area 40 when the outer peripheral wall of the pressure-bearing pipe is in face contact with the inner wall of the pipe portion 50, and defines with the abutting area 40 a passage of smaller bore size than the hollow portion of the socket pipe, which reduces the pressure applied to the abutting area 40.

The utility model discloses an in some embodiments, the pressure-bearing portion 30 is a plurality of, and a plurality of pressure-bearing portions 30 are arranged at the axial direction interval of pipe portion 50 to shelter from, promote the bearing capacity of pipe portion 50 through pressure-bearing portion 30 to pipe portion 50 in the regional 40 that borders on of the different positions of axial direction.

It is understood that the duct portion 50 is applied to an air conditioning apparatus, and when it is necessary to connect other pipes at a position of a side wall of the duct portion 50, a through hole structure is required to be opened at a side wall surface of the duct portion 50. When the pressure receiving portion 30 is constructed as a tubular structure, there is a possibility of interference with the through hole structure, which increases the processing steps of the piping if the hole structure corresponding to the through hole structure is provided in the pressure receiving pipe, and further increases the assembling accuracy of the pressure receiving pipe. This application is through setting up a plurality of bearing portion 30 to with the mode that a plurality of bearing portion 30 intervals set up in order to realize dodging to the through-hole structure, can reduce the demand to bearing portion 30 assembly precision, and the pressure-bearing capacity of piping also can fully be promoted in a plurality of bearing portion 30's setting.

In some embodiments of the present invention, at the pipe section where the pipe portion 50 is shielded by the pressure receiving portion 30 from the abutting region 40, the equivalent diameter of the cross-sectional shape of the pipe section in the axial direction is D, and D is equal to or greater than 30 mm. Thus, the pipe device 100 can be made into a pipe having a pipe section with a relatively large bore diameter by providing the pressure receiving portion 30, and the pipe has a high pressure receiving capacity.

Referring to fig. 3, the bore diameter of the pipe section in which the pressure-bearing portion 30 is disposed in the first cavity is larger than the other pipe sections in which the pressure-bearing portion 30 is not disposed, and the size of the first chamfer 12 and the second chamfer 22 is correspondingly increased due to the large bore diameter of the pipe sections. It will be appreciated that as the size of the chamfer increases, the pressure experienced at the abutment region 40 increases accordingly, thereby requiring a reduction in the pressure experienced at the abutment region 40 and an increase in the pressure-bearing capacity at the abutment region 40 by the provision of the pressure-bearing portion 30.

As shown in fig. 3, in some embodiments of the present invention, the first body 10 has a plurality of first cavities 11, the second body 20 has a plurality of second cavities 21, and the plurality of first cavities 11 and the plurality of second cavities 21 are in one-to-one correspondence so as to form a plurality of pipes through the pipe distribution device 100. It is understood that the parts formed when the plurality of sets of the first and second cavities 11 and 21 are coupled and separated from the first and second bodies 10 and 20 are pipes.

Wherein each piping is made jointly of a corresponding set of the first cavity 11 and the second cavity 21. When the first body 10 and the second body 20 are respectively provided with the plurality of groups of first cavities 11 and second cavities 21, the piping device 100 can prepare a plurality of pipings at the same time, so that the production and processing efficiency of the pipings is remarkably improved, and the production cycle of the pipings is shortened.

Further, each of the pipes may be applied to an air conditioning apparatus (e.g., a cabinet, an outdoor unit of an air conditioner, etc.). Meanwhile, it should be noted that the shapes and sizes of the plurality of first cavities 11 on the first body 10 may be the same or different. Accordingly, the plurality of second cavities 21 on the second body 20 may have the same shape and size, or different shapes and sizes, so as to meet the requirement of preparing a plurality of pipes simultaneously, and the pressure-bearing portion 30 may be provided only in the pipe portion 50 having a larger bore size (e.g., at least a portion of the pipe portion having a bore size greater than or equal to 30mm) so as to improve the pressure-bearing capacity thereof.

The structure of the pressure receiving portion 30 is not limited to the plate structure and the tube structure, and may be another member having a good shielding function.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact via another feature therebetween.

The descriptions of some embodiments, "exemplary embodiments," "examples," "specific examples," or "some examples" or the like are intended to include particular features, structures, materials, or characteristics described in connection with the embodiments or examples in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A piping device, comprising:

a first body having a first cavity;

a second body having a second cavity, each of the first and second cavities having an opening, the first and second bodies being fixedly connected with the openings of the first and second cavities facing each other such that the first and second cavities constitute a tube portion, wherein an abutment region is formed where the openings of the first and second cavities abut; and

a bearing portion disposed within the tube portion and at least partially obscuring the abutment region.

2. The piping device according to claim 1, wherein the abutting region and the pressure receiving portion each extend in an axial direction of the pipe portion.

3. The piping device according to claim 1, wherein the pressure receiving portion is bonded to at least a part of an inner wall surface of the pipe portion.

4. The piping device according to claim 3, wherein the pressure receiving portion is configured as a pressure receiving plate which is respectively fitted to an inner wall of the first cavity and an inner wall of the second cavity and adapted to shield the abutting area.

5. The piping arrangement as claimed in claim 4, wherein said pressure receiving plate is configured as an arc-shaped plate.

6. The piping arrangement of claim 5, wherein the arc-shaped plate is configured as a plate-shaped structure having a major arc in cross section.

7. The piping arrangement according to claim 5, wherein said arc-shaped plate is constructed in a plate-like structure with a minor arc in cross section, and said arc-shaped plates are two and serve to shield two of said abutting regions, respectively.

8. The piping arrangement according to claim 1, wherein the pressure receiving portion is configured as a pressure receiving pipe.

9. The piping device according to claim 8, wherein an outer peripheral wall of the pressure receiving pipe is attached to at least a part of an inner wall surface of the pipe portion.

10. The piping device according to claim 8, wherein an outer peripheral surface of the pressure receiving pipe is provided with a solder layer for solder-connecting the pressure receiving pipe to at least one of the first cavity and the second cavity.

11. The piping device according to claim 1, wherein the pressure receiving portion is provided in plurality, and the plurality of pressure receiving portions are arranged at intervals in an axial direction of the pipe portion.

12. The piping arrangement according to claim 1, wherein a cross-sectional shape equivalent diameter dimension of the pipe segment in the axial direction at a pipe segment where the pipe portion is shielded by the pressure receiving portion in the adjacent region is D, and D ≧ 30mm is satisfied.

13. The piping device according to any one of claims 1 to 12, wherein the first body has a plurality of the first cavities, the second body has a plurality of the second cavities, the plurality of first cavities correspond one-to-one to the plurality of second cavities, and the pressure receiving portion is provided in at least one of the plurality of pipe portions constituted by the plurality of first cavities and the plurality of second cavities.

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