Pipeline expansion piece of material conveying pipeline
Technical Field
The utility model relates to a pipe connection technical field, concretely relates to a pipeline expansion bend for material conveying pipeline.
Background
The pipeline expansion joint is also called a telescopic device, a telescopic joint and a compensator. The pipeline expansion joint can axially extend and retract within a certain range, and can overcome the offset generated by different axial directions of pipeline butt joint within a certain angle, thereby being greatly convenient for the installation and the disassembly of the valve pipeline. The existing pipeline expansion joint is mostly a waveform compensator, and the problems of complex structure, inconvenient installation and higher cost exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an equipment structure is simple, easy to assemble and the cost is lower, and the main use compensates the pipeline expansion bend of the flexible material conveying pipeline who warp of pipeline because of temperature variation produces, and concrete technical scheme is as follows:
the utility model provides a material conveying line's pipeline expansion bend, includes the pipe box, still includes:
the first connecting pipe is fixedly arranged on the inner cavity wall of the pipe sleeve, and one end of the pipe body of the first connecting pipe is arranged in the pipe sleeve; and
and the second connecting pipe can axially displace along the inner cavity of the pipe sleeve, and one end of the second connecting pipe, which is arranged in the pipe sleeve, can axially displace along the inner cavity of the first connecting pipe.
Preferably, the outer wall of the first connecting pipe is fixedly sleeved with a fixing ring for fixing the first connecting pipe and the pipe sleeve, and the fixing ring is fixedly welded in the inner cavity of the pipe sleeve.
Preferably, the outer wall of the second connecting pipe is fixedly connected with a moving ring, and a sealing ring used for sliding along the inner cavity of the pipe sleeve is arranged on the outer wall of the moving ring.
Preferably, the seal groove has been seted up to the shift ring outer wall, the sealing washer block is in the seal groove.
Preferably, the first connecting pipe is provided with an inner concave pipe part at one end of the inner cavity of the pipe sleeve, the second connecting pipe is provided with an outer pipe part at one end of the inner cavity of the pipe sleeve, and the outer pipe part can axially displace along the inner concave pipe part and is used for communicating the first connecting pipe with the second connecting pipe.
Preferably, through holes are formed in two ends of the pipe sleeve, the first connecting pipe is fixedly arranged in the through hole in one side, and the second connecting pipe is slidably arranged in the through hole in the other side.
According to the technical solution provided by the utility model, the utility model discloses following beneficial effect has: when the external temperature changes greatly and the reaction of expansion with heat and contraction with cold is generated, the second connecting pipe can axially displace along the inner cavity of the pipe sleeve to offset the telescopic deformation of the pipeline caused by the temperature change, so that the safety of the pipeline is ensured, and the pipeline connecting device has the advantages of simple structure, convenience in installation and cost reduction.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a portion a in fig. 1.
In the figure: 10. the pipe sleeve comprises a pipe sleeve 11, a through hole 20, a first connecting pipe 21, a fixed ring 22, a concave pipe part 30, a second connecting pipe 31, a moving ring 311, a sealing groove 32, an outer pipe part 33 and a sealing ring.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments, wherein prior to describing the technical aspects of the embodiments of the present invention in detail, the terms and the like are explained, and in the present specification, the components with the same names or the same reference numbers represent the similar or the same structures and are only used for illustrative purposes.
Example (b):
referring to fig. 1-2, a pipeline expansion piece of a material conveying pipeline comprises a pipe sleeve 10, a first connecting pipe 20 and a second connecting pipe 30, wherein the first connecting pipe is fixedly arranged on the inner cavity wall of the pipe sleeve, one end of a pipe body of the first connecting pipe is arranged in the pipe sleeve, the second connecting pipe can axially displace along the inner cavity of the pipe sleeve, and one end of the second connecting pipe arranged in the pipe sleeve can axially displace along the inner cavity of the first connecting pipe.
As the utility model discloses preferred technical scheme, the fixed cover of a connecting pipe 20 outer wall is equipped with the solid fixed ring 21 that is used for fixed connection pipe one and pipe box, and solid fixed ring fixed welding is at the 10 inner chambers of pipe box, and solid fixed ring cover is established at a connecting pipe 20 outer wall to accessible welded mode fixed connection is between a connecting pipe and pipe box 10.
As the utility model discloses preferred technical scheme, two 30 outer wall fixedly connected with shifting rings 31 of connecting pipe, the shifting ring outer wall are equipped with and are used for following the gliding sealing washer 33 of 10 inner chambers of pipe box, and the sealing washer on the solid fixed ring of accessible when following pipe box inner chamber axial displacement contacts with the pipe box inner wall of connecting pipe two to improve the stability of two removals of connecting pipe and the leakproofness of pipe box.
Furthermore, the outer wall of the moving ring 31 is provided with a sealing groove 311, the sealing ring is clamped in the sealing groove, the sealing groove is convenient for fixing the sealing ring, and the moving stability of the sealing ring is improved.
As the utility model discloses preferred technical scheme, pipe box inner chamber one end is arranged in to connecting pipe one 20 is equipped with interior concave pipe portion 22, and pipe box inner chamber one end is arranged in to connecting pipe two 30 is equipped with overhanging pipe portion 32, and overhanging pipe portion can follow interior concave pipe portion axial displacement for intercommunication connecting pipe one and connecting pipe two, connecting pipe two when moving along the pipe box inner chamber, drive overhanging pipe portion inner chamber including the removal of overhanging pipe portion, in order to realize connecting pipe one and connecting pipe two's connection.
Furthermore, two ends of the pipe sleeve 10 are provided with through holes 11, the first connecting pipe is fixedly arranged in the through hole at one side, and the second connecting pipe is slidably arranged in the through hole at the other side.
The working principle is as follows: the first connecting pipe 20 and the second connecting pipe 30 on the pipe sleeve 10 are connected with the pipeline, when the external temperature changes greatly and thermal expansion and cold contraction reaction is generated, the telescopic deformation of the pipeline caused by temperature change can be counteracted through the axial displacement of the second connecting pipe along the inner cavity of the pipe sleeve, specifically, the second connecting pipe moves along the inner wall of the pipe sleeve 10 through the moving ring 31 on the second connecting pipe to realize the self sliding, and the sealing ring 33 arranged on the moving ring is favorable for improving the moving stability of the moving ring and the sealing performance of the whole pipe sleeve; at the same time, the outer extension pipe part 32 of the second connection pipe 30 can move along the inner cavity of the inner concave pipe part 22 to realize the communication between the first connection pipe and the second connection pipe.
The above-mentioned embodiments are only to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.