CN112066107A

CN112066107A - Natural gas conveying pipeline

Info

Publication number: CN112066107A
Application number: CN202010887894.6A
Authority: CN
Inventors: 夏鹏; 高永航
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2020-12-11

Abstract

The invention relates to the technical field of natural gas transportation, in particular to a natural gas transportation pipeline which comprises a connecting external thread, a first transportation pipe, a first connecting device, a second transportation pipe, a connecting internal thread and a protection mechanism, wherein the first connecting device is arranged at one end of the first transportation pipe and one end of the second transportation pipe, the second connecting device is arranged at the other end of the first transportation pipe and the other end of the second transportation pipe, the end, provided with the first connecting device, of the first transportation pipe is opposite to the end, provided with the second connecting device, of the second transportation pipe, the external part of one end, far away from the first connecting device, of the first transportation pipe is provided with the connecting external thread, and the internal part of one end, far away from the second connecting device, of the second. The pipeline splicing device is convenient to move pipelines in the using process, long pipelines can be spliced conveniently, and the spliced pipelines cannot be damaged when moving.

Description

Natural gas conveying pipeline

Technical Field

The invention relates to the technical field of natural gas transportation, in particular to a natural gas transportation pipeline.

Background

The natural gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced in oil fields) from a mining place or a processing plant to an urban gas distribution center or an industrial enterprise user, and is also called a gas transmission pipeline.

The natural gas pipeline need carry out one section fixed welding when using and use, but inconvenient removal to the pipeline after longer natural gas pipeline grafting fixed welding, very easily break off lifting by crane and rolling in-process welded connection department to longer natural gas pipeline is because the length is longer inconvenient pegging graft fixedly in the in-process that uses, thereby not the welded fastening between the pipeline, thereby needs a natural gas conveying pipeline to improve above-mentioned problem.

Disclosure of Invention

The present invention is directed to a natural gas pipeline, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a natural gas conveying pipeline, is including connecting external screw thread, first conveyer pipe, first connecting device, second conveyer pipe and connection internal thread, first connecting device is all installed to the one end of first conveyer pipe and second conveyer pipe, second connecting device is all installed to the other end of first conveyer pipe and second conveyer pipe, just first conveyer pipe is installed first connecting device's one end and is installed second connecting device's one end with the second conveyer pipe relatively, first conveyer pipe is kept away from first connecting device's one end outside and is seted up the connection external screw thread, the second conveyer pipe is kept away from second connecting device's one end inside and has been seted up the connection internal thread, just connect the external screw thread and be connected internal thread looks adaptation.

Specifically, the first connecting device comprises a first rolling ring, a splicing fixing rod, a first buffering support rod, a first screwing hand wheel, a first fastening adjusting threaded column, a first fastening piece, a first connecting bearing and a protection mechanism, wherein the first fastening adjusting threaded column is uniformly screwed to rotate, runs through and is spliced on an outer ring extension ring of the first connecting bearing, the first fastening piece is fixedly connected to one end of the first fastening adjusting threaded column, which is located inside the first connecting bearing, the first screwing hand wheel is fixedly installed at one end of the first fastening adjusting threaded column, which is located outside the first connecting bearing, the first buffering support rod is uniformly and fixedly installed on the outer ring outer wall of the first connecting bearing, the first rolling ring is fixedly installed at the outer end of the first buffering support rod, and the splicing fixing rod is uniformly and fixedly installed on the outer end face of the first rolling ring.

Specifically, install fixed column and slip post in the first buffering bracing piece, and the slip post slip joint is in the inside of fixed column, and fixed mounting has buffer spring between fixed column and the slip post.

Specifically, the second connecting device comprises an auxiliary fixing limiting ring, a splicing fixing hole, a second buffering supporting rod, a second rolling ring, a second fastening adjusting threaded column, a second screwing hand wheel, a second fastening piece and a second connecting bearing, wherein the second fastening piece is uniformly installed on an outer ring extension ring of the second connecting bearing, the second fastening adjusting threaded column is uniformly screwed and inserted on the second connecting bearing, the second fastening piece is fixedly connected to one end, located at the inner part of the second connecting bearing, of the second fastening adjusting threaded column, the second screwing hand wheel is fixedly connected to one end, far away from the second fastening piece, of the second fastening adjusting threaded column, the splicing fixing hole is uniformly penetrated and arranged on the second rolling ring, and the auxiliary fixing limiting ring is fixedly installed on the outer wall of the second rolling ring.

Specifically, the grafting dead lever is equipped with six, and supplementary fixed spacing ring and grafting fixed orifices all are equipped with six, and the grafting dead lever can peg graft in the inside of supplementary fixed spacing ring and grafting fixed orifices.

Specifically, the inner rings of the first connecting bearing and the second connecting bearing are fixedly embedded at two ends of the first conveying pipe and the second conveying pipe.

Specifically, rubber gaskets are inlaid in the end faces, in contact with the outer walls of the first conveying pipe and the second conveying pipe, of the first fastening piece and the second fastening piece.

Specifically, the protection mechanism comprises a connecting device, a conveying pipe, a first protection device and a protection device, the connecting device is arranged at the two end heads of the conveying pipe, the first protection device and the protection device are fixedly arranged at the two ends of the outer end face of the conveying pipe, the connecting device comprises a fixed thread ring, an inner connecting thread, a connecting thread ring, a screwing ring, an insertion pipe body and a rotary sealing ring, the inner connecting thread is arranged inside the fixed thread ring, the connecting thread ring can be in threaded rotary insertion connection inside the inner connecting thread, the screwing ring is fixedly connected outside the outer end face of the connecting thread ring, the insertion pipe body is in insertion connection inside the inner connecting thread through the rotary sealing ring, the insertion pipe body is inserted into the first conveying pipe, the rotary sealing ring is in sealed rotary insertion connection in the middle of the connecting thread ring, and the structural specifications of the first protection device and the protection device are the same, the connecting devices are fixedly inserted into the interiors of the first delivery pipe and the second delivery pipe, respectively.

Specifically, first protector includes communicating pipe, first explosion-proof equipment, second explosion-proof equipment, sealed lid, standing groove, guard plate, protecting film and carries the frame, the standing groove runs through and sets up at the middle part of carrying the frame, guard plate and protecting film fixed mounting are in the inside of standing groove, just the guard plate is located the inner of carrying the frame, the protecting film is located the middle part of carrying the frame and between first explosion-proof equipment and the second explosion-proof equipment, sealed lid passes through bolt fixed mounting in the outer end of carrying the frame, communicating pipe fixed connection is in the inner of carrying the frame, just first explosion-proof equipment and second explosion-proof equipment's structural specification is the same, the extrusion broken groove has evenly been seted up to the both sides terminal surface of guard plate, fixed insertion to the inside of conveyer pipe communicating pipe.

Specifically, first explosion-proof equipment includes pressure relief valve, spacing mounting groove, adjusting spring, closing plate, sealed awl and pressure relief hole, pressure relief hole runs through and sets up at the middle part of pressure relief valve, spacing mounting groove is set up at the up end middle part of pressure relief valve, the even fixed mounting of adjusting spring is in the inside of spacing mounting groove, sealed awl is sealed pegs graft in the inside of pressure relief hole, closing plate fixed mounting is at the up end of sealed awl, just adjusting spring's up end and the bottom face fixed connection of closing plate, pressure relief valve is fixed pegs graft on carrying the frame.

Compared with the prior art, the invention has the following beneficial effects:

(1) the two ends of the first conveying pipe and the second conveying pipe are respectively provided with a first connecting device and a second connecting device, the inner ring inner walls of a first connecting bearing and a second connecting bearing in the first connecting device and the second connecting device are fixedly connected with the outer walls of the first conveying pipe and the second conveying pipe, and the outer ring outer walls of the first connecting bearing and the second connecting bearing in the first connecting device and the second connecting device are respectively fixedly connected with a first rolling ring and a second rolling ring through a first buffering supporting rod and a second buffering supporting rod Move, and can be steady move and do not take place to rotate at the in-process first conveyer pipe and the second conveyer pipe that utilize external force to press first conveyer pipe and the removal of second conveyer pipe, also make first conveyer pipe and the removal in-process of second conveyer pipe after the concatenation only need utilize external force to press first conveyer pipe and second conveyer pipe can make and keep steady stationary removal between first conveyer pipe and the second conveyer pipe, make the difficult emergence of connection and the welding end between first conveyer pipe and the second conveyer pipe fracture and fracture.

(2) After the end of the first conveying pipe provided with the connecting external thread is opposite to the end of the second conveying pipe provided with the connecting internal thread, the inserting fixing rod in the first conveying pipe is rotated by external force and then correspondingly inserted into the auxiliary fixing limiting ring and the inserting fixing hole respectively, at the moment, the end of the first conveying pipe provided with the connecting external thread is slightly inserted into the end of the second conveying pipe provided with the connecting internal thread, at the moment, the first screwing hand wheel and the second hand wheel which are installed on the first conveying pipe are screwed, at the moment, the first fastening piece and the second fastening piece which are installed on the first conveying pipe are extruded and fixed with the outer wall of the first conveying pipe, so that the first conveying pipe can rotate together with the first rolling ring and the second rolling ring in the rolling movement process, at the moment, the second conveying pipe is pushed by external force to enable the spliced devices to move together, because the first rolling ring in the first conveying pipe is fixedly connected with the second rolling ring in the second conveying pipe by the inserting fixed rod, the first conveying pipe and the second conveying pipe can move, the second conveying pipe is pushed by external force to move, the second conveying pipe is fixed and does not rotate in the process of moving by the first rolling ring and the second rolling ring, but the first conveying pipe rotates along with the rotation of the first rolling ring and the second rolling ring, so that the end, provided with the connecting external thread, of the rotating first conveying pipe can be slowly inserted into the inner part, provided with the connecting internal thread, of the second conveying pipe in the moving process, the first conveying pipe and the second conveying pipe can be fixedly connected by threads in the moving process, and the first conveying pipe and the second conveying pipe can be conveniently welded and reinforced, after the first conveying pipe and the second conveying pipe are fixed in a threaded mode, the first screwing hand wheel and the second screwing hand wheel in the first conveying pipe can be screwed again, and the extrusion force between the first fastening piece and the second fastening piece to the outer wall of the first conveying pipe is cancelled, so that the first conveying pipe and the second conveying pipe can move in a relative static mode, and the first conveying pipe and the second conveying pipe can move in a synchronous static mode after the first conveying pipe and the second conveying pipe are fixed in a threaded mode.

(3) Protection mechanism has been installed between first conveyer pipe and the second conveyer pipe, can play automatic row at the in-process of first conveyer pipe and second conveyer pipe natural gas through protection mechanism and press blast proof effect, the natural gas gets into to the conveyer pipe through inserting the body when the inside pressure of first conveyer pipe and second conveyer pipe is too big, and get into to the inside of transport frame, the natural gas can utilize the extrusion broken groove of seting up on the guard plate to extrude the guard plate breakage when pressure is too big, thereby make the inside of natural gas entering to the standing groove that can be smooth, and because the fender of the protecting film, the natural gas can be ejecting and make adjusting spring tensile by the inside of row's pressure hole with the sealed awl among the first explosion-proof equipment, consequently can discharge the natural gas through row's pressure hole, thereby reduce the inside pressure of first conveyer pipe and second conveyer pipe, adjusting spring resets when the pressure release is accomplished pressure recovery normal value thereby the sealed awl of pulling is sealed inserts to row's pressure hole and will arrange the pressure hole with row' s Hole shutoff, pressure when the not enough quick pressure release of the first explosion-proof equipment of in-process installation of pressure release breaks the protecting film with the guard plate when broken, first explosion-proof equipment and second explosion-proof equipment can the pressure release simultaneously this moment for the great increase of ability of pressure release, ensured that first conveyer pipe and second conveyer pipe can not break owing to its inside too big emergence of pressure in the in-process of using, can take off the guard plate and the protecting film of damage and change through taking off sealed lid.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a side view of the body of the present invention;

FIG. 3 is a schematic view of a connection structure of a first connection device and a second connection device according to the present invention;

FIG. 4 is a schematic structural diagram of a first connecting device according to the present invention;

FIG. 5 is a side view of a first coupling device of the present invention;

FIG. 6 is a schematic view of a second connecting device according to the present invention;

FIG. 7 is a schematic view of the guard mechanism of the present invention;

FIG. 8 is a schematic exploded view of the connector of the present invention;

FIG. 9 is a schematic view of a first protective device according to the present invention;

FIG. 10 is a schematic disassembled view of the first shielding device of the present invention;

fig. 11 is a schematic structural diagram of a first explosion-proof device of the invention.

In the figure: 1-connection external thread, 2-first delivery pipe, 3-first connection device, 4-second connection device, 5-second delivery pipe, 6-connection internal thread, 31-first rolling ring, 32-insertion fixing rod, 33-first buffer support rod, 34-first screwing hand wheel, 35-first fastening adjusting threaded column, 36-first fastening piece, 37-first connection bearing, 41-auxiliary fixing limit ring, 42-insertion fixing hole, 43-second buffer support rod, 44-second rolling ring, 45-second fastening adjusting threaded column, 46-second screwing hand wheel, 47-second fastening piece, 48-second connection bearing, 7-protection mechanism, 71-connection device, 72-delivery pipe, 73-first protection device, 74-protective device, 712-fixed thread ring, 713-internal connection thread, 714-connection thread ring, 715-screwing ring, 716-inserting tube body, 717-rotating sealing ring, 731-communicating tube, 732-first explosion-proof device, 733-second explosion-proof device, 734-sealing cover, 735-placing groove, 736-protection plate, 737-protection film, 738-conveying frame, 7321-pressure discharge valve, 7322-limit mounting groove, 7323-adjusting spring, 7324-sealing plate, 7325-sealing cone, 7326-pressure discharge hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown: the utility model provides a natural gas conveying pipeline, including connecting external screw thread 1, first conveyer pipe 2, first connecting device 3, second connecting device 4, second conveyer pipe 5 and connection internal thread 6, first connecting device 3 is all installed to first conveyer pipe 2 and second conveyer pipe 5's one end, second connecting device 4 is all installed to first conveyer pipe 2 and second conveyer pipe 5's the other end, and first conveyer pipe 2 installs the one end of first connecting device 3 and second conveyer pipe 5 installs the one end of second connecting device 4 relatively, first conveyer pipe 2 keeps away from the one end outside of first connecting device 3 and has seted up connection external screw thread 1, second conveyer pipe 5 keeps away from the one end inside of second connecting device 4 and has seted up connection internal thread 6, and connect external screw thread 1 and be connected internal thread 6 looks adaptations.

Specifically, the first connecting device 3 includes a first rolling ring 31, an inserting fixing rod 32, a first buffering support rod 33, a first screwing hand wheel 34, a first fastening adjusting threaded column 35, a first fastening piece 36 and a first connecting bearing 37, the first fastening adjusting threaded column 35 is uniformly screwed and inserted on an outer ring extension ring of the first connecting bearing 37, the first fastening piece 36 is fixedly connected to one end of the first fastening adjusting threaded column 35 inside the first connecting bearing 37, the first screwing hand wheel 34 is fixedly installed at one end of the first fastening adjusting threaded column 35 outside the first connecting bearing 37, the first buffering support rod 33 is uniformly and fixedly installed on an outer ring outer wall of the first connecting bearing 37, the first rolling ring 31 is fixedly installed at an outer end of the first buffering support rod 33, the inserting fixing rod 32 is uniformly and fixedly installed on an outer end face of the first rolling ring 31, the first connecting device 3 and the second connecting device are respectively installed at two ends of the first conveying pipe 2 and the second conveying pipe 5 The device 4, the inner ring inner walls of the first connecting bearing 37 and the second connecting bearing 48 of the first connecting device 3 and the second connecting device 4 are fixedly connected with the outer walls of the first conveying pipe 2 and the second conveying pipe 5, the outer ring outer walls of the first connecting bearing 37 and the second connecting bearing 48 of the first connecting device 3 and the second connecting device 4 are fixedly connected with the first rolling ring 31 and the second rolling ring 44 through the first buffer supporting rod 33 and the second buffer supporting rod 43, respectively, so that the first conveying pipe 2 and the second conveying pipe 5 can keep stable movement under the rotating action of the first connecting bearing 37 and the second connecting bearing 48 when the first rolling ring 31 and the second rolling ring 44 roll when the first conveying pipe 2 and the second conveying pipe 5 are pushed to move by external force, so that the first conveying pipe 2 and the first conveying pipe 5 can rapidly move by the first connecting device 3 and the second connecting device 4 which are installed at both ends thereof, and first and

second feed pipes

2 and 5 can be smoothly moved without rotation in the process of moving first and

second feed pipes

2 and 5 by being pressed by an external force.

Specifically, install fixed column and slip post in the first buffering bracing piece 33, and the slip post slip joint is in the inside of fixed column, and fixed mounting has buffer spring between fixed column and the slip post, plays the effect of buffering for the in-process that rotates the removal is stable.

Specifically, the second connecting device 4 includes an auxiliary fixing limiting ring 41, an inserting fixing hole 42, a second buffer supporting rod 43, a second rolling ring 44, a second fastening adjusting threaded column 45, a second screwing hand wheel 46, a second fastening tab 47 and a second connecting bearing 48, the second fastening tab 47 is uniformly installed on an outer ring extension ring of the second connecting bearing 48, the second fastening adjusting threaded column 45 is uniformly threaded and inserted on the second connecting bearing 48, and second fastening piece 47 is fixedly connected to the end of second fastening adjusting threaded column 45 located inside second connecting bearing 48, second screwing hand wheel 46 is fixedly connected to the end of second fastening adjusting threaded column 45 far away from second fastening piece 47, inserting fixing hole 42 is uniformly penetrated and opened on second rolling ring 44, auxiliary fixing limiting ring 41 is fixedly installed on the outer wall of second rolling ring 44, and second connecting device 4 is used in cooperation with first connecting device 3 to play a role in connection and fixation.

Specifically, the inserting fixing rod 32 is provided with six, the auxiliary fixing limiting ring 41 and the inserting fixing hole 42 are provided with six, and the inserting fixing rod 32 can be inserted into the auxiliary fixing limiting ring 41 and the inserting fixing hole 42, so that the second connecting device 4 is stably and firmly connected with the first connecting device 3.

Specifically, the inner rings of the first connecting bearing 37 and the second connecting bearing 48 are fixedly embedded at both ends of the first conveying pipe 2 and the second conveying pipe 5, so that the first conveying pipe 2 and the second conveying pipe 5 can be kept in a static state during movement.

Specifically, the end faces of the first and

second fastening tabs

36 and 47 that contact the outer walls of the first and

second delivery pipes

2 and 5 are each embedded with a rubber gasket, so that sufficient friction force can be generated between the first and

second fastening tabs

36 and 47 and the first and

second delivery pipes

2 and 5.

Specifically, the protection mechanism 7 comprises a connecting device 71, a conveying pipe 72, a first protection device 73 and a protection device 74, wherein the connecting device 71 is arranged at the two ends of the conveying pipe 72, the first protection device 73 and the protection device 74 are fixedly arranged at the two ends of the outer end surface of the conveying pipe 72, the connecting device 71 comprises a fixed threaded ring 712, an inner connecting thread 713, a connecting threaded ring 714, a screwing ring 715, an insertion pipe body 716 and a rotating sealing ring 717, the inner connecting thread 713 is arranged inside the fixed threaded ring 712, the connecting threaded ring 714 can be screwed and rotatably inserted inside the inner connecting thread 713, the screwing ring 715 is fixedly connected outside the outer end surface of the connecting threaded ring 714, the insertion pipe body 716 is inserted inside the inner connecting thread 713 through the rotating sealing ring 717, the insertion pipe body 716 is inserted inside the first conveying pipe 2, and the rotating sealing ring 717 is sealed and rotatably inserted in the middle of the connecting threaded ring 714, and the structural specifications of the first guard 73 and the guard 74 are the same, the connecting device 71 is fixedly inserted into the interior of the first conveying pipe 2 and the second conveying pipe 5, respectively.

Specifically, the first protection device 73 includes a communication pipe 731, a first explosion-proof device 732, a second explosion-proof device 733, a sealing cover 734, a placement groove 735, a protection plate 736, a protection film 737 and a conveying frame 738, the placement groove 735 penetrates through the middle portion of the conveying frame 738, the protection plate 736 and the protection film 737 are fixedly installed inside the placement groove 735, the protection plate 736 is located at the inner end of the conveying frame 738, the protection film 737 is located at the middle portion of the conveying frame 738 and between the first explosion-proof device 732 and the second explosion-proof device 733, the sealing cover 734 is fixedly installed at the outer end of the conveying frame 738 through bolts, the communication pipe 731 is fixedly connected at the inner end of the conveying frame 738, the structural specifications of the first explosion-proof device 732 and the second explosion-proof device 733 are identical, extrusion breaking grooves are uniformly formed in end faces of two sides of the protection plate 736, and the communication pipe 731 is fixedly.

Specifically, the first explosion-proof device 732 includes a pressure relief valve 7321, a limiting installation groove 7322, an adjusting spring 7323, a sealing plate 7324, a sealing cone 7325 and a pressure relief hole 7326, the pressure relief hole 7326 runs through the middle part of the pressure relief valve 7321, the limiting installation groove 7322 is provided in the middle part of the upper end surface of the pressure relief valve 7321, the adjusting spring 7323 is uniformly and fixedly installed inside the limiting installation groove 7322, the sealing cone 7325 is inserted into the pressure relief hole 7326 in a sealing manner, the sealing plate 7324 is fixedly installed on the upper end surface of the sealing cone 7325, the upper end surface of the adjusting spring 7323 is fixedly connected with the lower end surface of the sealing plate 7324, and the pressure relief valve 7321 is fixedly inserted into the conveying frame 738.

The working principle is as follows: the first and second conveying

pipes

2 and 5 are respectively provided with a first connecting device 3 and a second connecting device 4 at both ends thereof, inner ring inner walls of a first connecting bearing 37 and a second connecting bearing 48 of the first and second connecting

devices

3 and 4 are fixedly connected with outer walls of the first and second conveying

pipes

2 and 5, outer ring outer walls of the first connecting bearing 37 and the second connecting bearing 48 of the first and second connecting

devices

3 and 4 are respectively fixedly connected with a first rolling ring 31 and a second rolling ring 44 through a first buffer support rod 33 and a second buffer support rod 43, so that the first and second conveying

pipes

2 and 5 can stably move under the rotating action of the first connecting bearing 37 and the second connecting bearing 48 when the first and second conveying

pipes

31 and 44 roll when the first and second conveying

pipes

2 and 5 are pushed to move by an external force, therefore, the first conveying pipe 2 and the second conveying pipe 5 can utilize the first connecting device 3 and the second connecting device 4 which are arranged at the two ends of the first conveying pipe to carry out rapid position movement by utilizing external force, and the first conveying pipe 2 and the second conveying pipe 5 can stably move without rotating in the process of pressing the first conveying pipe 2 and the second conveying pipe 5 by utilizing the external force, and the first conveying pipe 2 and the second conveying pipe 5 can stably and statically move only by utilizing the external force to press the first conveying pipe 2 and the second conveying pipe 5 in the moving process of the spliced first conveying pipe 2 and the second conveying pipe 5, so that the connecting and welding ends between the first conveying pipe 2 and the second conveying pipe 5 are not easy to crack and break, after one end of the first conveying pipe 2 provided with the connecting external thread 1 is opposite to one end of the second conveying pipe 5 provided with the connecting internal thread 6, the inserting fixing rod 32 in the first connecting device 3 in the first conveying pipe 2 is rotated by external force and then correspondingly inserted into the auxiliary fixing limiting ring 41 and the inserting fixing hole 42, at the moment, the end, provided with the connecting external thread 1, of the first conveying pipe 2 is slightly inserted into the end, provided with the connecting internal thread 6, of the second conveying pipe 5, at the moment, the first screwing hand wheel 34 and the second screwing hand wheel 46 which are installed on the first conveying pipe 2 are screwed, at the moment, the first fastening sheet 36 and the second fastening sheet 47 which are installed on the first conveying pipe 2 are extruded and fixed with the outer wall of the first conveying pipe 2, so that the first conveying pipe 2 can rotate together with the first rolling ring 31 and the second rolling ring 44 in the rolling movement process, at the moment, the second conveying pipe 5 is pushed by external force, the spliced device moves together, and because the first rolling ring 31 in the first conveying pipe 2 and the second rolling ring 44 in the second conveying pipe 5 are pushed by the external force, the first rolling ring 31 in the first conveying pipe 2 and the The first conveying pipe 2 and the second conveying pipe 5 can move due to fixed connection, the second conveying pipe 5 is pushed by external force to move, at the moment, the second conveying pipe 5 is fixed and does not rotate in the process of moving by using the first rolling ring 31 and the second rolling ring 44, but at the moment, the first conveying pipe 2 can rotate along with the rotation of the first rolling ring 31 and the second rolling ring 44, so that the end, provided with the connecting external thread 1, of the rotating first conveying pipe 2 can be slowly inserted into the end, provided with the connecting internal thread 6, of the second conveying pipe 5 in the moving process, the first conveying pipe 2 and the second conveying pipe 5 can be in threaded connection and fixed in the moving process, the first conveying pipe 2 and the second conveying pipe 5 can be welded and reinforced, and after the first conveying pipe 2 and the second conveying pipe 5 are in threaded connection, the first screwing hand wheel 34 and the second screwing hand wheel in the first conveying pipe 2 can be screwed again 46, the extrusion force between the first fastening plate 36 and the second fastening plate 47 on the outer wall of the first delivery pipe 2 is cancelled, so that the first delivery pipe 2 and the second delivery pipe 5 relatively move still, the first delivery pipe 2 and the second delivery pipe 5 after being fixed by threads can synchronously move still, a protection mechanism 7 is installed between the first delivery pipe 2 and the second delivery pipe 5, the protection mechanism 7 can play an automatic pressure-discharging and explosion-proof role in the process of delivering natural gas by the first delivery pipe 2 and the second delivery pipe 5, when the pressure inside the first delivery pipe 2 and the second delivery pipe 5 is overlarge, the natural gas enters the delivery pipe 72 through the insertion pipe body 716 and enters the delivery frame 738, when the pressure is overlarge, the natural gas can crush the protection plate 736 by utilizing the crush slot formed in the protection plate 736, so that the natural gas can smoothly enter the inside of the placement slot 735, and due to the blocking of the protective film 737, the natural gas can eject the sealing cone 7325 in the first anti-explosion device 732 from the inside of the pressure discharge hole 7326 and stretch the adjusting spring 7323, so that the natural gas can be discharged through the pressure discharge hole 7326, thereby reducing the pressure inside the first delivery pipe 2 and the second delivery pipe 5, when the pressure is released and pressure is restored to a normal value, the adjusting spring 7323 is reset to pull the sealing cone 7325 to be inserted into the pressure discharge hole 7326 in a sealing manner to block the pressure discharge hole 7326, when the pressure is not enough for rapid pressure release of the first anti-explosion device 732 installed in the pressure release process, the protective film 737 is broken while the protective plate 736 is broken, at this time, the first anti-explosion device 732 and the second anti-explosion device 733 can be simultaneously, so that the pressure release capacity is greatly increased, thereby ensuring that the first delivery pipe 2 and the second delivery pipe 5 will not be broken due to excessive pressure inside the first delivery pipe 2 and the second delivery pipe, the damaged protection plate 736 and the protection film 737 can be removed and replaced by removing the sealing cover 734, the delivery pipe 72, the first protection device 73 and the protection device 74 can be arranged on the connected first delivery pipe 2 and the connected second delivery pipe 5 by rotating the screwing ring 715 to drive the connecting threaded ring 714 to rotate through the internal threads of the internal connecting threads 713, and the installation is convenient and quick.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a natural gas conveying pipeline, is including connecting external screw thread (1), first conveyer pipe (2), first connecting device (3), second connecting device (4), second conveyer pipe (5) and connecting internal thread (6) and protection machanism (7), its characterized in that: first connecting device (3) are all installed to the one end of first conveyer pipe (2) and second conveyer pipe (5), second connecting device (4) are all installed to the other end of first conveyer pipe (2) and second conveyer pipe (5), just the one end that second connecting device (4) were installed to the one end that first connecting device (3) were installed in first conveyer pipe (2) and second conveyer pipe (5) is relative, first conveyer pipe (2) are kept away from the one end outside of first connecting device (3) and have been seted up connection external screw thread (1), the one end inside of keeping away from second connecting device (4) of second conveyer pipe (5) has been seted up and has been connected internal thread (6), just connect external screw thread (1) and be connected internal thread (6) looks adaptation.

2. A natural gas transportation pipeline according to claim 1, wherein: the first connecting device (3) comprises a first rolling ring (31), an inserting fixing rod (32), a first buffering support rod (33), a first screwing hand wheel (34), a first fastening adjusting threaded column (35), a first fastening piece (36) and a first connecting bearing (37), wherein the first fastening adjusting threaded column (35) is uniformly screwed, penetrates and is inserted on an outer ring extension ring of the first connecting bearing (37), the first fastening piece (36) is fixedly connected to one end, located inside the first connecting bearing (37), of the first fastening adjusting threaded column (35), the first screwing hand wheel (34) is fixedly installed at one end, located outside the first connecting bearing (37), of the first fastening adjusting threaded column (35), the first buffering support rod (33) is uniformly and fixedly installed on the outer ring of the first connecting bearing (37), the first rolling ring (31) is fixedly installed at the outer end of the first buffering support rod (33), the inserting and fixing rods (32) are uniformly and fixedly arranged on the outer end face of the first rolling ring (31).

3. A natural gas transportation pipeline according to claim 2, wherein: install fixed column and slip post in first buffering bracing piece (33), and slip post slip joint in the inside of fixed column, and fixed mounting has buffer spring between fixed column and the slip post.

4. A natural gas transportation pipeline according to claim 1, wherein: the second connecting device (4) comprises an auxiliary fixed limiting ring (41), an inserting fixing hole (42), a second buffer supporting rod (43), a second rolling ring (44), a second fastening adjusting threaded column (45), a second screwing hand wheel (46), a second fastening piece (47) and a second connecting bearing (48), wherein the second fastening piece (47) is uniformly installed on an outer ring extension ring of the second connecting bearing (48), the second fastening adjusting threaded column (45) is uniformly screwed and inserted on the second connecting bearing (48), the second fastening piece (47) is fixedly connected to one end, located at the inner part of the second connecting bearing (48), of the second fastening adjusting threaded column (45), the second screwing hand wheel (46) is fixedly connected to one end, far away from the second fastening piece (47), of the second fastening adjusting threaded column (45), and the inserting fixing hole (42) is uniformly penetrated and arranged on the second rolling ring (44), and the auxiliary fixed limiting ring (41) is fixedly arranged on the outer wall of the second rolling ring (44).

5. A natural gas transportation pipeline according to claim 2, wherein: the inserting fixing rods (32) are six, the auxiliary fixing limiting rings (41) and the inserting fixing holes (42) are six, and the inserting fixing rods (32) can be inserted into the auxiliary fixing limiting rings (41) and the inserting fixing holes (42).

6. A natural gas transportation pipeline according to claim 2, wherein: the inner rings of the first connecting bearing (37) and the second connecting bearing (48) are fixedly embedded at two ends of the first conveying pipe (2) and the second conveying pipe (5).

7. A natural gas transportation pipeline according to claim 2, wherein: rubber gaskets are inlaid in the end faces, in contact with the outer walls of the first conveying pipe (2) and the second conveying pipe (5), of the first fastening piece (36) and the second fastening piece (47).

8. A natural gas transportation pipeline according to claim 1, wherein: the protection mechanism (7) comprises a connecting device (71), a conveying pipe (72), a first protection device (73) and a protection device (74), wherein the connecting device (71) is installed at the two end heads of the conveying pipe (72), the first protection device (73) and the protection device (74) are fixedly installed at the two ends of the outer end face of the conveying pipe (72), the connecting device (71) comprises a fixed threaded ring (712), an internal connecting thread (713), a connecting threaded ring (714), a screwing ring (715), an inserting pipe body (716) and a rotating sealing ring (717), the internal connecting thread (713) is arranged inside the fixed threaded ring (712), the connecting threaded ring (714) can be in threaded and rotatably inserted inside the internal connecting thread (713), the screwing ring (715) is fixedly connected outside the outer end face of the connecting threaded ring (714), the inserting pipe body (716) is inserted inside the internal connecting thread (713) through the rotating sealing ring (717), and the inserting pipe body (716) is inserted into the first conveying pipe (2), the rotary sealing ring (717) is sealed, rotatably inserted in the middle of the connecting threaded ring (714), the structural specifications of the first protective device (73) and the protective device (74) are the same, and the connecting device (71) is respectively and fixedly inserted into the first conveying pipe (2) and the second conveying pipe (5).

9. A natural gas transportation pipeline according to claim 8, wherein: the first protection device (73) comprises a communication pipe (731), a first explosion-proof device (732), a second explosion-proof device (733), a sealing cover (734), a placing groove (735), a protection plate (736), a protection film (737) and a conveying frame (738), the placing groove (735) penetrates through the middle of the conveying frame (738), the protection plate (736) and the protection film (737) are fixedly installed inside the placing groove (735), the protection plate (736) is located at the inner end of the conveying frame (738), the protection film (737) is located at the middle of the conveying frame (738) and between the first explosion-proof device (732) and the second explosion-proof device (733), the sealing cover (734) is fixedly installed at the outer end of the conveying frame (738) through bolts, the communication pipe (731) is fixedly connected to the inner end of the conveying frame (738), and the first explosion-proof device (732) and the second explosion-proof device (733) have the same structural specification, extrusion broken grooves are uniformly formed in the end faces of the two sides of the protection plate (736), and the communication pipe (731) is fixedly inserted into the conveying pipe (72).

10. A natural gas transportation pipeline according to claim 9, wherein: first explosion-proof equipment (732) includes pressure relief valve (7321), spacing mounting groove (7322), adjusting spring (7323), closing plate (7324), sealed awl (7325) and pressure relief hole (7326), pressure relief hole (7326) runs through the middle part of opening at pressure relief valve (7321), spacing mounting groove (7322) are opened at the up end middle part of pressure relief valve (7321), adjusting spring (7323) even fixed mounting is in the inside of spacing mounting groove (7322), sealed awl (7325) is sealed the inside of pegging graft at pressure relief hole (7326), closing plate (7324) fixed mounting is in the up end of sealed awl (7325), just the up end of adjusting spring (7323) and the bottom face fixed connection of closing plate (7324), pressure relief valve (7321) is fixed to be pegged graft on transport frame (738).