CN211398901U - Pipeline connecting device - Google Patents
Pipeline connecting device Download PDFInfo
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- CN211398901U CN211398901U CN201921824084.5U CN201921824084U CN211398901U CN 211398901 U CN211398901 U CN 211398901U CN 201921824084 U CN201921824084 U CN 201921824084U CN 211398901 U CN211398901 U CN 211398901U
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Abstract
A pipeline connecting device is used for being connected between pipelines in a train and absorbing the deformation of the pipelines caused by thermal expansion and cold contraction. The utility model discloses a coupling for connecting tube, and set up telescopic connection spare between the coupling. The utility model discloses utilize telescopic connection spare to form the pipeline that supplies medium circulation in the pipeline between the pipeline, utilize telescopic connection spare's deformation simultaneously, corresponding tensile when the pipeline meets cold shrink is stable in order to guarantee the pipe connection, or corresponding shrink when the pipeline preheats the inflation and holds the deformation volume of pipeline. Therefore, the utility model discloses can absorb the pipeline expend with heat and contract with cold deformation originally and act on the stress of coupling for pipeline and coupling do not receive the flexible volume of deformation to influence, guarantee that it does not appear warping or pine takes off at train operation process, guarantee that the influence train operation can not appear revealing in the medium in the train pipeline.
Description
Technical Field
The utility model relates to a train spare part field particularly relates to a pipe connection device.
Background
The pipeline on the train expands when heated and contracts when cooled. Because the train has a large running distance span and the temperature difference of the running environment of the train is obvious in the running process, the deformation of the pipeline is large in the running process. For a stainless steel pipe with the length of 1m, the expansion and contraction amount of the stainless steel pipe is usually 0.35-0.38 mm in the running process of a train. Every steel pipe length sets up to 6m in the train, and the expend with heat and contract with cold flexible volume between the whole car steel pipe just can reach 5 ~ 8 millimeters.
Because the pipeline itself on the train does not have stress absorbing structure or can hold the space of deformation, the flexible volume of whole car 5 ~ 8 millimeters can only release on the pipe connector that connects between the pipeline. The pipe joint needs to bear train vibration in the running process of a train and needs to accept the stretching or the compression of expansion with heat and contraction with cold of a train pipeline, so that the pipe joint is easy to deform or loosen, a medium in the pipeline is leaked, and the running of the train is influenced.
Therefore, a structure capable of absorbing the amount of deformation caused by thermal expansion and contraction of the train pipeline is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a pipe connection device, the utility model discloses a flexible connecting piece realizes the release to train pipe deflection stress, and protection pipeline and coupling itself do not receive the stress influence that the environment caused, protection train pipe. The utility model discloses specifically adopt following technical scheme.
First, in order to achieve the above object, there is provided a pipe connecting device including: a first pipe joint provided at one end portion of the pipe connection device; a second pipe joint provided at the other end portion of the pipe connection device; the telescopic connecting piece is arranged in the middle of the pipeline connecting device and is positioned between the first pipe joint and the second pipe joint; one end of the telescopic connecting piece is connected to the first pipe joint, and the other end of the telescopic connecting piece is connected to the second pipe joint.
Optionally, the pipe connection device further includes a sheath, which surrounds the outer wall of the pipeline of the telescopic connection member and is fixed between the first pipe joint and the second pipe joint.
Optionally, in the pipe connection device of any one of the above, the telescopic connection member is a metal corrugated pipe, and a pipe wall of the metal corrugated pipe is a single layer or a double layer.
Optionally, the pipeline connecting device further includes a connecting transition section, each connecting transition section is connected with the first pipe joint or the second pipe joint as a whole, and the connecting transition section has an inner periphery and an outer periphery; the inner periphery of the connecting transition section is connected with the telescopic connecting piece in a sealing mode, and the outer periphery of the connecting transition section is fixedly connected with the sheath.
Optionally, in the pipe connection device according to any one of the above, an end of the telescopic connection member is welded to an inner periphery of the connection transition section, and the telescopic connection member is communicated with inner walls of the first pipe joint and the second pipe joint.
Optionally, in any one of the above pipe connection devices, the sheath is a metal braided sleeve, and an end of the metal braided sleeve is welded to an outer periphery of the connection transition joint.
Optionally, in the pipe connection device according to any one of the above, the sheath and the connection transition joint surround the outside of the telescopic connector, the sheath and/or the telescopic connector are made of stainless steel, and a surface of the metal braided sleeve has a hole.
Optionally, in the pipe connection device of any one of the above, the metal braided sleeve and the telescopic connector stretch or contract synchronously to absorb the telescopic stress of the pipe to which the first pipe joint and/or the second pipe joint is connected.
Optionally, in the pipe connecting device, the first pipe joint is one of an inner pipe joint and an outer pipe joint, and the second pipe joint is one of an inner pipe joint and an outer pipe joint.
Optionally, the pipe connecting device further includes a rubber protective sleeve, and the rubber protective sleeve is wrapped on the outer wall of the metal woven sleeve by the inner pipe joint and/or the outer pipe joint.
Advantageous effects
The utility model discloses connect between the pipeline in the train, absorb the deflection of pipeline expend with heat and contract with cold. The utility model discloses a coupling for connecting tube, and set up telescopic connection spare between the coupling. The utility model discloses utilize telescopic connection spare to form the pipeline that supplies medium circulation in the pipeline between the pipeline, utilize telescopic connection spare's deformation simultaneously, corresponding tensile when the pipeline meets cold shrink is stable in order to guarantee the pipe connection, or corresponding shrink when the pipeline preheats the inflation and holds the deformation volume of pipeline. Therefore, the utility model discloses can absorb the pipeline expend with heat and contract with cold deformation originally and act on the stress of coupling for pipeline and coupling do not receive the flexible volume of deformation to influence, guarantee that it does not appear warping or pine takes off at train operation process, guarantee that the influence train operation can not appear revealing in the medium in the train pipeline.
For guaranteeing the requirement of bearing pressure in the pipeline, the utility model discloses can be further set up the expansion joint spare into double-deck nonrust corrugated steel pipe. Because the pipe wall of the stainless steel corrugated pipe is thin, the utility model can also provide protection for the stainless steel corrugated pipe through the sheath formed by the metal woven sleeve. The metal weaving sleeve is provided with holes, and the metal wires between the holes can move synchronously along with the stretching or compressing of the corrugated pipe to absorb the stretching stress, so that the corrugated pipe in the metal weaving sleeve is effectively protected, and the collision or impact of external foreign matters is prevented.
The pores of the metal woven sleeve can be used for rainwater and various gases in the environment to pass through, so that the phenomenon that the rainwater and various gases are accumulated on the wall of the corrugated pipe to corrode the pipe body is avoided. For further corrugated pipe pine takes off in this pipe connection device and provides the sealing effect to intraductal medium when revealing temporarily, the utility model discloses still can wrap up rubber protective sleeve in the outside of metal braiding cover, act as the pipeline that supplies the medium circulation temporarily by rubber protective sleeve, avoid the train to respond to the pipeline trouble and by compelled bring to rest.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the pipe connection device of the present invention;
FIG. 2 is a partial schematic view of the pipe coupling of FIG. 1 in connection with a train pipe;
fig. 3 is a perspective view of a pipe connection device according to an implementation of the present invention.
In the drawings, 1 denotes a first pipe joint; 11 denotes a pipe; 2 denotes a second pipe joint; 21 denotes the inner wall of the outer pipe joint; 3 denotes a telescopic link; 4 denotes a connecting transition joint; 41 denotes the inner circumference; 42 denotes the outer periphery; 5 denotes a sheath; 6 denotes a bolt; 61 denotes a screw thread; and 62 denotes a gasket.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the following description will clearly and completely describe the technical solution of the embodiments of the present invention by combining the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present invention means that they exist individually or both at the same time.
The meaning of "inside and outside" in the present invention means that, relative to the pipe connection device itself, the direction pointing to the inside of the telescopic connection member is inside, and the direction pointing to the outside of the sheath is outside; and not to the specific limitations of the device mechanism of the present invention.
The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.
Fig. 1 shows a pipe connection device according to the present invention, which is disposed in a pipe of a train and connected to an end of the pipe of the train by two or more pipe joints, communicating with a pipe 11 of the train. This pipe connection specifically includes:
pipe joints, such as a first pipe joint 1 and a second pipe joint 2 shown in fig. 1, which are respectively connected with different pipelines, may be correspondingly configured as an internal pipe joint or an external pipe joint or any combination thereof corresponding to the interface structures of the pipeline ends;
and the telescopic connecting piece 3 is connected between the pipe joints and is positioned in the middle of the pipeline connecting device. The telescopic connecting piece 3 and the pipeline form a pipeline for medium circulation, wherein one end of the telescopic connecting piece 3 is connected to the first pipe joint 1, and the other end of the telescopic connecting piece is connected to the second pipe joint 2. Because telescopic connection spare itself has certain flexible deformation space, consequently, this connecting device between the pipeline can adapt to the deformation volume of pipeline expend with heat and contract with cold, corresponding shrink or extension, corresponding promotion shrink when the pipeline is heated expansion telescopic connection spare 3 is with the inflation volume of absorption pipeline, or corresponding tensile when the pipeline meets cold contraction telescopic connection spare 3 to the deformation stress of absorption pipeline itself avoids this stress to act on other couplings that do not possess the deformation space, avoids pipeline or coupling to receive deformation stress influence and warp or pine take off, causes whole pipeline leakproofness impaired influence train operation.
In some implementations, in the above pipe connection device, the telescopic connection member 3 may be a corrugated pipe made of metal, such as stainless steel. The pipeline pressure-bearing device can be arranged into a single layer or double layers or even multiple layers according to the pipeline pressure-bearing requirement so as to bear the pressure of 40kpa in the pipeline or correspond to the pipe pressure of at least 60 kilograms.
In order to obtain a proper deformation space and ensure the pressure inside the pipe, the wall structure of the stainless steel corrugated pipe is generally thin. In the running process of a train, foreign matters collide or corrosive gas and liquid are easily accumulated to be damaged, so that the flexibility of the expansion of the whole pipeline connecting device is influenced or the sealing performance of the device is influenced. In order to avoid this influence, the utility model discloses still can be under some implementation the pipe connection device in set up sheath 5. The sheath 5 surrounds the outer wall of the pipeline of the telescopic connecting piece 3 and is fixed between the first pipe joint 1 and the second pipe joint 2 to protect the telescopic connecting piece 3 from colliding or impacting external foreign matters.
In order to facilitate the fixation of the telescopic connector 3 and the sheath 5, the utility model discloses still further each near the coupling sets up the connection transition section 4. For example, in the implementation shown in fig. 1, two connection transition joints 4 may be connected to the first pipe joint 1 or the second pipe joint 2 as a whole, and each connection transition joint 4 has an inner periphery and an outer periphery; the inner periphery of the connecting transition section 4 is connected with the telescopic connecting piece 3 in a sealing mode, and the outer periphery of the connecting transition section 4 is fixedly connected with the sheath 5.
In some implementations, the end of the wall of the stainless steel corrugated pipe can be welded to the inner periphery of the connection transition joint 4 by high-frequency oscillation welding, and is communicated with the inner wall of the outer pipe joint, so as to be communicated to the pipeline 11 of the train through the inner pipe joint connected with the outer pipe joint. In other ways, such as shown in the upper portion of fig. 1, the walls of the stainless steel bellows and the connecting transition joint 4 communicate in a similar manner with the inner walls of the inner adapters, so that the outer adapters connected by the inner adapters communicate with the pipeline 11 of the train.
The connecting transition joint 4 can be connected with the outer dental pipe joint or the inner dental pipe joint in the pipeline connecting device into a whole, and is fixedly connected with the end part of the corresponding telescopic connecting piece or the end part of the sheath through the inner periphery and the outer periphery of the connecting transition joint. The outer screwed pipe joint is used for being connected with the inner screwed pipe joint and is arranged on the outer wall of the outer screwed pipe joint; the threads of the inner pipe joint are opposite and are arranged on the inner wall of the inner pipe joint.
Taking one end of the pipe connecting device shown in fig. 2 as an example, an end joint of the pipe 11 is provided as an inner pipe joint, and a pipe joint of the pipe connecting device corresponding to the end joint is provided as an outer pipe joint. In one implementation, with reference to the partial cross-sectional view of the end of the pipe coupling corresponding to the dashed line in FIG. 1, the inner circumference of the connection transition section 4 is closer to the outer mouthpiece, the outer circumference of the connection transition section 4 is longer than the inner circumference, and the inner and outer circumferences are welded to the outer mouthpiece as a unit at a location near the end of the inner wall 21 of the outer mouthpiece in FIG. 2; a gap is reserved between the inner ring and the outer ring of the connecting transition joint 4, and the side wall of the telescopic connecting piece 3 can be accommodated;
the telescopic connecting piece 3 is arranged between the connecting transition joints 4 and is in sealing connection with the inner peripheries of the connecting transition joints 4, so that pipelines for medium circulation can be formed by the telescopic connecting piece 3, the inner peripheries of the connecting transition joints 4, the inner wall 21 of the outer dental tube connector and the pipeline 11 in a communicated manner; the telescopic connecting piece 3 can be correspondingly contracted to absorb the expansion amount of the pipeline or correspondingly stretched to ensure the stable connection of the pipeline in the process that the pipeline 11 is heated to expand or is cooled to contract;
under the structure of the connecting transition joint 4, the sheath 5 surrounds the telescopic connecting piece 3, and the end part of the sheath can be fixedly connected with the periphery of the connecting transition joint 4 and forms protection for the inner telescopic connecting piece together with the outer wall of the protective cover.
Referring to fig. 2, a gasket 62 may further abut between the inner and outer adapters to effect sealing of the connection ports to which they are connected. The periphery of the washer can be screwed and fixed through threads 61 inside the bolt 6 and communicated with the pipeline.
In a more preferred implementation, in the pipe connecting device, the sheath 5 may be a metal woven sheath made of 304 stainless steel or the like, and an end of the metal woven sheath is welded to an outer periphery of the connecting transition joint 4. Specifically, the outer wall of the end of the metal braided sleeve is welded to the inner wall of the periphery of the connecting transition joint 4, and the connecting transition joint 4 integrally seals the ports of the sheath 5 and the telescopic connector 3, so that the ports are protected from being peeled off or disconnected by external force. Therefore, the metal braided sleeve and the periphery of the connecting transition joint 4 surround the outer side of the telescopic connecting piece 3, so that the telescopic connecting pieces 3 such as the corrugated pipe and the like are protected, the direct contact with external corrosive gas or liquid is avoided, and the influence of the perforation of the pipe wall on the sealing of the medium in the pipeline is avoided.
For guaranteeing the protection effect to pipeline and bellows structure, the metal is woven the cover and is woven by stainless steel's wire and form, and the mode of weaving makes the surface of metal is woven the cover has the hole, and the wire near the hole can relative movement, provides certain flexible deformation volume. Therefore, in the running process of the train, the metal woven sleeve can be synchronously stretched or contracted by the pipeline or the pipe joint along with the telescopic connecting piece 3 to absorb the telescopic stress of the pipeline connected with the outer screwed pipe joint, so that the stress is prevented from directly acting on the pipe joints such as the inner screwed pipe joint or the outer screwed pipe joint, and the gasket and the thread structure in the pipe joints are pulled or compressed to deform and loosen the pipe joint.
Under other implementation, take off for further ripple pipe pine in this pipe connection device and provide the sealing effect to intraductal medium when revealing temporarily, the utility model discloses still can wrap up rubber protective sheath in the outside of metal braiding cover, act as the pipeline that supplies the medium circulation temporarily by rubber protective sheath, avoid the train to be forced the bring to rest because of the pipeline trouble. The rubber protective sleeve can further prevent external hard objects from hitting the inner structure of the pipeline connecting device, buffer frequent vibration in vehicle operation and eliminate fatigue of an inner mechanical structure.
Therefore, the utility model discloses can provide the flexible deformation volume of confession pipeline through the flexible connecting piece that the bellows formed, solve the problem that the flexible tractive of pipeline warp the pine and take off in the limited easy pipeline that receives in pipe joint expansion space. The utility model discloses a pipe connection device, it can be according to the corresponding its bellows length that sets up of the required deformation volume of pipeline length between 15 ~ 20cm to provide sufficient expansion and contraction allowance, guarantee that the coupling in pipeline and the pipeline can not stretch out and draw back the deformation, effectively avoid the pipeline medium to reveal and influence the train operation.
The above description is only for the embodiments of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which all fall within the scope of the present invention.
Claims (10)
1. A pipe coupling, comprising:
a first pipe joint (1) provided at one end portion of the pipe connection device;
a second pipe joint (2) provided at the other end of the pipe connection device;
the telescopic connecting piece (3) is arranged in the middle of the pipeline connecting device and is positioned between the first pipe joint (1) and the second pipe joint (2); one end of the telescopic connecting piece (3) is connected to the first pipe joint (1), and the other end of the telescopic connecting piece is connected to the second pipe joint (2).
2. The pipe connection according to claim 1, characterized by further comprising a jacket (5) surrounding the outer wall of the line of the telescopic connection (3) and fixed between the first pipe joint (1) and the second pipe joint (2).
3. The pipe connection according to claim 2, characterized in that the telescopic connection (3) is a metal bellows, the wall of which is single-or double-layered.
4. The pipe coupling according to claim 2, further comprising coupling transition joints (4), each coupling transition joint (4) being integrally connected to the first pipe joint (1) or the second pipe joint (2), respectively, the coupling transition joint (4) having an inner periphery and an outer periphery; the inner periphery of the connecting transition joint (4) is connected with the telescopic connecting piece (3) in a sealing mode, and the outer periphery of the connecting transition joint (4) is fixedly connected with the sheath (5).
5. The pipe connection according to claim 4, characterized in that the ends of the telescopic connector (3) are welded to the inner circumference of the connection transition piece (4), the telescopic connector (3) communicating with the inner walls of the first pipe joint (1) and the second pipe joint (2).
6. The pipe connection according to claim 4, characterized in that the jacket (5) is a metal braided jacket, the ends of which are welded to the outer circumference of the connection transition piece (4).
7. The pipe connection according to claim 6, characterized in that the jacket (5) and the connection transition joint (4) are enclosed on the outside of the telescopic connector (3), the jacket (5) and/or the telescopic connector (3) being of stainless steel, the surface of the metal braided sleeve being porous.
8. The pipe connection according to claim 6, characterized in that the simultaneous stretching or shrinking of the metal braid and the telescopic connector (3) absorbs the telescopic stress of the pipe to which the first pipe joint (1) and/or the second pipe joint (2) is connected.
9. The pipe connection according to claim 8, wherein the first pipe joint (1) is any one of an internal pipe joint or an external pipe joint, and the second pipe joint (2) is any one of an internal pipe joint or an external pipe joint.
10. The pipe coupling according to claim 9, further comprising a rubber boot wrapped around an outer wall of the metal woven sleeve by the inner nipple and/or the outer nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824084.5U CN211398901U (en) | 2019-10-28 | 2019-10-28 | Pipeline connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824084.5U CN211398901U (en) | 2019-10-28 | 2019-10-28 | Pipeline connecting device |
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| Publication Number | Publication Date |
|---|---|
| CN211398901U true CN211398901U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921824084.5U Active CN211398901U (en) | 2019-10-28 | 2019-10-28 | Pipeline connecting device |
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| CN (1) | CN211398901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645430A (en) * | 2019-10-28 | 2020-01-03 | 安徽欣景隆轨道车辆装备有限公司 | Pipeline connecting device |
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2019
- 2019-10-28 CN CN201921824084.5U patent/CN211398901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645430A (en) * | 2019-10-28 | 2020-01-03 | 安徽欣景隆轨道车辆装备有限公司 | Pipeline connecting device |
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