CN214618252U - Conveying pipeline - Google Patents
Conveying pipeline Download PDFInfo
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- CN214618252U CN214618252U CN202120410070.XU CN202120410070U CN214618252U CN 214618252 U CN214618252 U CN 214618252U CN 202120410070 U CN202120410070 U CN 202120410070U CN 214618252 U CN214618252 U CN 214618252U
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Abstract
The present application provides a transport pipeline comprising: the inner pipe is arranged on the inner side of the outer pipe through the support frame, two opposite ends of the outer pipe are fixedly connected with the first pipe flange respectively, the first pipe flange is sleeved on the inner pipe, the first pipe flange, the inner pipe and the outer pipe form a heat preservation part, and the heat preservation part is filled with a heat preservation material. The transmission pipeline provided by the application can keep warm, reduces the loss of cold energy, can be suitable for being used in an unremaintable space, can also be suitable for being installed in an environment where open fire is forbidden, increases the application range of the transmission pipeline, simultaneously reduces the manufacturing cost of the transmission pipeline, and is simple in structure and convenient to install and use.
Description
Technical Field
The application relates to the technical field of pipeline transportation, in particular to a transmission pipeline.
Background
Under normal pressure, the temperature of liquid nitrogen is-196 ℃, the liquid nitrogen absorbs heat through gasification, the ambient temperature is lower than the ignition point of combustible materials, the gasified nitrogen is incombustible, oxygen can be isolated in a closed space, the materials are prevented from being continuously combusted, and the fire extinguishing device is very suitable for fire extinguishing in coal mines. When the liquid nitrogen is adopted for fire extinguishing in the coal mine, a hole is directly drilled above the fully mechanized mining area on fire, and after the common steel pipe is led to the fire area, the liquid nitrogen is changed into nitrogen through the vaporizer and led to the fire area through the common steel pipe for fire extinguishing. However, as the use temperature of the common steel pipe is higher than minus 20 ℃, the common steel pipe cannot directly convey liquid nitrogen, the pipeline is scrapped after being used once, and the gasification heat absorption of the liquid nitrogen is not utilized, so that the cold energy of the liquid nitrogen is wasted, and the fire extinguishing effect is reduced.
At present, in the process of transmitting low-temperature fluid such as liquid nitrogen and the like, in order to prevent external heat from being transmitted to the low-temperature fluid and reduce cold loss, a pipeline generally adopts a double-layer vacuum tube. If the double-layer vacuum tube is adopted to repeatedly convey liquid nitrogen in the fire extinguishing process of a coal mine, the cold loss can be reduced, the investment is too high, the installation is difficult, the vacuum degree is checked in the set time, if the vacuum degree does not meet the set value, the vacuum pumping is required again, and otherwise, the heat preservation effect cannot be achieved. The drilling hole diameter of the coal mine pipeline construction is very small, the vacuum degree condition of the vacuum tube is not checked, and the vacuum tube is not vacuumized again, so that the vacuum tube cannot be used as a pipeline for transmitting liquid nitrogen. Therefore, a transmission pipeline for transmitting liquid nitrogen in a coal mine is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides a transmission pipeline to solve the above technical problems.
The present application provides a transport pipeline comprising: the device comprises an outer pipe, a support frame, a first pipe flange and an inner pipe for conveying low-temperature fluid;
the inner pipe passes through the support frame is installed the outer tube inboard, the relative both ends that set up of outer tube respectively with first pipe flange fixed connection, first pipe flange cover is established on the inner pipe, first pipe flange, inner pipe and the outer tube forms heat preservation portion, heat preservation portion intussuseption is filled with insulation material.
Preferably, a plurality of first through holes are formed in the first pipe flange and are uniformly distributed along the circumferential direction of the outer pipe.
Preferably, the device further comprises a feed inlet blocking plate and a vent outlet blocking plate;
a feed port for installing the heat-insulating material is formed in one end of the outer pipe, and the feed port is plugged by the feed port plugging plate; the other end of the outer tube is provided with an air outlet, and the air outlet is plugged by an air outlet plugging plate.
Preferably, the feed inlet with install the feed inlet packing ring between the feed inlet closure plate, the gas vent with install the gas vent packing ring between the gas vent closure plate.
Preferably, the feed inlet is further provided with a second pipe flange and a first fastener, the second pipe flange is provided with a plurality of second through holes, the feed inlet blocking plate is provided with third through holes corresponding to the second through holes one to one, and the first fastener penetrates through the second through holes and the third through holes to fixedly connect the second pipe flange and the feed inlet blocking plate;
the gas vent still installs third pipe flange and second fastener, it has a plurality of fourth through-holes to open on the third pipe flange, open on the gas vent closure plate have with the fifth through-hole of fourth through-hole one-to-one, the second fastener passes the fourth through-hole with the fifth through-hole, with third pipe flange and gas vent closure plate fixed connection.
Preferably, the support frame comprises a fixing ring and a plurality of support rods;
the first end of each supporting rod is fixed on the fixing ring, and the supporting rods are distributed along the circumferential direction of the fixing ring;
the fixed ring is sleeved on the inner pipe, and the second end of the supporting rod supports the outer pipe.
Preferably, a heat insulation layer is arranged between the second end of each support rod and the outer pipe.
Preferably, the outer diameter of each support rod is gradually reduced along the direction away from the fixing ring.
Preferably, each support rod is provided with a sixth through hole which is axially parallel to the fixing ring.
Preferably, the number of the supporting rods is at least four, and the four supporting rods are uniformly distributed along the circumferential direction of the fixing ring.
The application provides a transmission pipeline, establish on the inner tube through first pipe flange cover, the inner tube passes through the support frame and installs at the outer tube inboard, the relative both ends that set up of outer tube respectively with first pipe flange fixed connection, make first pipe flange, inner tube and outer tube form heat preservation portion, the intussuseption of heat preservation portion is filled with insulation material, can keep warm, reduce cold volume loss, can be applicable to the space use that can not maintain, also can be applicable to the installation in the environment of forbidding naked light, transmission pipeline's application scope has been increased, and simultaneously, transmission pipeline's manufacturing cost has been reduced, and transmission pipeline's simple structure, installation convenient to use.
Drawings
FIG. 1 is a front view of the structure of a transfer pipe of an embodiment of the present application;
FIG. 2 is a cross-sectional view of a transfer pipe of an embodiment of the present application;
FIG. 3 is a top view of the structure of a transfer pipe of an embodiment of the present application;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view B-B of FIG. 2;
fig. 6 is a schematic structural diagram of a support frame according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 1 is a front view of a structure of a transport duct of an embodiment of the present application, and fig. 2 is a sectional view of the transport duct of the embodiment of the present application. As shown in fig. 1 and 2, the present application provides a transfer pipe comprising: an outer pipe 1, a support frame 2, a first pipe flange 3 and an inner pipe 4 for transporting a cryogenic fluid.
Wherein, the inner tube 4 passes through the support frame 2 is installed 1 inboardly of outer tube, the relative both ends that set up of outer tube 1 respectively with first pipe flange 3 fixed connection, first pipe flange 3 cover is established on the inner tube 4, first pipe flange 3, inner tube 4 with outer tube 1 forms heat preservation portion 5, the intussuseption of heat preservation portion 5 is filled with insulation material.
In an alternative embodiment of the present application, the support frame 2 supports the inner tube 4 such that the inner tube 4 is not in direct contact with the outer tube 1, thereby reducing the heat transfer between the inner tube 4 and the outer tube 1.
The inner pipe 4 can be a 304 stainless steel seamless pipe, the first pipe flange 3 can be a 304 stainless steel flange which is formed by ordinary flat welding and matched with the inner pipe 4, for example, the inner pipe 4 is a DN100 (nominal diameter is 100mm) seamless steel pipe, the wall thickness is 6mm, the outer diameter is 108mm, the inner diameter is 96mm, then the DN100 (nominal diameter is 100mm) flat welding flange is selected, the inner diameter of the flange is 114.3mm, and the requirement of pipe insertion welding is met. The first pipe flange 3 is vertically connected with the inner pipe 4 and the outer pipe 1, and the heat preservation part 5 forms a closed space, so that heat transfer is further reduced. The heat insulating material can be pearlized sand which has good ultralow temperature heat insulating performance and light weight and is easy to fill the pipeline cavity.
When the transmission pipeline is used, one end of the outer pipe 1 is welded with the first pipe flange 3, the support frame 2 is sleeved on the inner pipe 4, then the inner pipe 4 is inserted into the outer pipe 1, the inner pipe 4 is supported and fixed through the support frame 2, the same side of the inner pipe 4 and the outer pipe 1 is welded with the first pipe flange 3, the heat insulation material is filled in the inner pipe 4, the other side of the inner pipe 4 and the other side of the outer pipe 1 are welded with the first pipe flange 3 after the inner pipe is filled with the heat insulation material, the heat insulation material is located in the closed heat insulation part 5, the loss of cold quantity in the inner pipe 4 can be reduced, the heat transfer is realized, in the using process, the maintenance is not needed, in addition, the transmission pipeline only needs to be connected and installed through the first pipe flange 3 in the using process, the welding is not needed, the using range of the transmission pipeline is increased, and the transmission pipeline is suitable for being installed in the environment where open fire is forbidden.
Through filling insulation material to heat preservation portion 5 and replacing the vacuum tube, prevent that external heat from conveying to inner tube 4 in, can save the time and the process of maintaining the vacuum degree of vacuum tube among the prior art, use in can being applicable to the space that can not maintain simultaneously, compare the use of vacuum tube moreover, the small investment, with low costs, it is effectual to keep warm.
The application provides a transmission pipeline, establish on inner tube 4 through first pipe flange 3 cover, inner tube 4 passes through support frame 2 and installs at 1 inboardly of outer tube, the relative both ends that set up of outer tube 1 respectively with first pipe flange 3 fixed connection, make first pipe flange 3, inner tube 4 and outer tube 1 form heat preservation portion 5, the intussuseption of heat preservation portion 5 is filled with insulation material, can keep warm, reduce cold volume loss, can be applicable to the space use that can not maintain, also can be applicable to the installation in the environment of forbidding naked light, transmission pipeline's application scope has been increased, and simultaneously, transmission pipeline's manufacturing cost has been reduced, and transmission pipeline's simple structure, installation convenient to use.
Optionally, a plurality of first through holes 31 are formed in the first pipe flange 3, and the first through holes 31 are uniformly distributed along the circumferential direction of the outer pipe 1, so that the first pipe flange 3 is uniformly stressed and is stably installed.
As shown in fig. 2 and 3, in an alternative embodiment of the present application, the outer diameter of the first pipe flange 3 is larger than the outer diameter of the outer pipe 1, the first through holes 31 are located outside the outer pipe 1, and the number of the first through holes 31 is at least 4, so that the first pipe flange 3 is stressed uniformly when being installed and used.
Optionally, the conveying pipeline further comprises a feed port blocking plate 61 and a vent port blocking plate 71;
a feed port for installing the heat insulation material is formed in one end of the outer pipe 1, and the feed port is plugged by the feed port plugging plate 61; the other end of the outer pipe 1 is provided with an exhaust port, and the exhaust port blocking plate 71 blocks the exhaust port, so that the sealing performance of the heat preservation part 5 is improved, and the heat transmission is reduced.
As shown in fig. 4 and 5, in an optional embodiment of the present application, the outer tube 1 is connected at opposite ends thereof with a feeding tube 60 and an exhaust tube 70, respectively, so as to facilitate filling of the thermal insulation material and exhaust air of the thermal insulation portion 5 as soon as possible, the mouths of the feeding tube 60 and the exhaust tube 70 are provided with external threads, the feed inlet blocking plate 61 and the exhaust outlet blocking plate 71 circumferentially extend out of a connecting plate, and the connecting plate is provided with internal threads, which are connected with the external threads of the mouth of the tube in a matching manner.
Optionally, the feed inlet with install feed inlet packing ring 62 between the feed inlet closure plate 61, the gas vent with install gas vent packing ring 72 between the gas vent closure plate 71, further increase the leakproofness of feed inlet and gas vent, prevent that outside air from getting into the heat preservation.
In an alternative embodiment of the present application, the inlet gasket 62 and the outlet gasket 72 can be made of asbestos gasket, which has good sealing performance and excellent corrosion resistance, and can prevent moisture from entering the thermal insulation portion 5.
Optionally, a second pipe flange 63 and a first fastener are further installed on the feed inlet, a plurality of second through holes are formed in the second pipe flange 63, third through holes corresponding to the second through holes in a one-to-one manner are formed in the feed inlet blocking plate 61, the first fastener penetrates through the second through holes and the third through holes to fixedly connect the second pipe flange 63 and the feed inlet blocking plate 61, and the installation stability of the feed inlet blocking plate 61 is improved;
As shown in fig. 1 to 5, in an optional embodiment of the present application, the feed inlet blocking plate 61 and the exhaust outlet blocking plate 71 may both be flange blind plates with bolt holes, and the first fastening member and the second fastening member may both be bolts and nuts, and when the heat insulating plate is installed and used, a gasket may be added, and the nuts may be tightened, so as to further increase the connection stability and ensure the sealing performance of the heat insulating portion 5.
Optionally, the support frame 2 comprises a fixed ring 21 and a plurality of support rods 22;
the first end of each supporting rod 22 is fixed on the fixing ring 21, and the supporting rods 22 are distributed along the circumferential direction of the fixing ring 21, so that the central axes of the inner pipe 4 and the outer pipe 1 are overlapped, and the heat preservation effect of the heat preservation part 5 is improved;
the fixed ring 21 is sleeved on the inner tube 4, every second end of the supporting rod 22 supports the outer tube 1, the supporting rod 22 is in point contact with the outer tube 1, the contact area of the supporting frame 2 and the outer tube 1 is reduced, and heat transfer is reduced.
As shown in fig. 6, in an alternative embodiment of the present application, the supporting frame 2 may be made of a 304 stainless steel plate with a thickness of 10mm, the fixing ring 21 is welded to the outer wall of the inner tube 4, and the supporting frames 2 are plural and distributed at intervals along the length direction of the inner tube 4, so as to increase the installation stability of the inner tube 4.
Optionally, an insulating layer is disposed between the second end of each support rod 22 and the outer tube 1, so as to further reduce heat transfer.
In an optional embodiment of the present application, the insulating layer may be made of foamed polyurethane, and has a small thermal conductivity, so as to perform the functions of heat preservation and heat insulation.
Optionally, the outer diameter of each support rod 22 is gradually reduced along a direction away from the fixing ring 21, so that the amount of steel is reduced, and the contact area between the support frame 2 and the outer tube 1 is reduced.
As shown in fig. 6, in an alternative embodiment of the present application, an included angle a between two corresponding inclined lines of the support rod 22 is 20 ° to 30 °, which not only meets the requirement of rigidity of the support frame 2, but also reduces the amount of steel.
Optionally, each of the support rods 22 is provided with a sixth through hole 23 axially parallel to the fixing ring 21, so as to reduce the area of the steel between the inner tube 4 and the outer tube 1 and reduce heat transfer.
In an optional embodiment of the present application, the sixth through hole 23 may be an elliptical hole, an axial direction of the fixing ring 21 is an extending direction of a central axis of the fixing ring 21, and an axial direction of the sixth through hole 23 is parallel to an axial direction of the fixing ring 21, so as to facilitate the addition of a heat insulating material, and at the same time, the amount of steel used may be reduced, and the cost may be reduced.
When the transmission pipeline is used, the support frame 2 is welded with the inner pipe 4, the left end of the inner pipe 4 is welded with the first pipe flange 3, then the outer pipe 1 is sleeved on the support frame 2, the right end of the outer pipe 1 is welded with the first pipe flange 3, the right end of the inner pipe 4 is welded with the first pipe flange 3, the left end of the outer pipe 1 is welded with the first pipe flange 3, whether the heat preservation part 5 is a closed space is checked after welding is completed, the pipeline is confirmed to be qualified, finally, in a dry environment, heat preservation materials are filled through the feeding hole, gas in the heat preservation part 5 is discharged from the exhaust hole, after the heat preservation materials are filled, the feeding hole blocking plate 61 and the exhaust hole blocking plate 71 are installed, the heat preservation part 5 is sealed, and when the transmission pipeline is used, the transmission pipeline is fixedly connected through the matched bolt and nut, the gasket and the first pipe flange 3. As shown in FIG. 6, the end near the inlet is "right" and the end near the outlet is "left".
As shown in fig. 6, optionally, the number of the support rods 22 is at least four, and the four support rods 22 are uniformly distributed along the circumferential direction of the fixing ring 21, so as to stably support the inner tube 4, and reduce the amount of steel. The four support rods 22 ensure the rigidity of the support frame 2, so that the inner tube 4 and the outer tube 1 are stressed uniformly and connected stably.
The technical solutions of the present application are described in detail with reference to specific embodiments, which are used to help understand the ideas of the present application. The derivation and modification made by the person skilled in the art on the basis of the specific embodiment of the present application also belong to the protection scope of the present application.
Claims (10)
1. A transport conduit, comprising: the device comprises an outer pipe, a support frame, a first pipe flange and an inner pipe for conveying low-temperature fluid;
the inner pipe passes through the support frame is installed the outer tube inboard, the relative both ends that set up of outer tube respectively with first pipe flange fixed connection, first pipe flange cover is established on the inner pipe, first pipe flange, inner pipe and the outer tube forms heat preservation portion, heat preservation portion intussuseption is filled with insulation material.
2. The transport conduit of claim 1, wherein the first pipe flange has a plurality of first through holes formed therein, the plurality of first through holes being evenly distributed along a circumference of the outer pipe.
3. The transfer duct of claim 2, further comprising a feed port closure and a vent port closure;
a feed port for installing the heat-insulating material is formed in one end of the outer pipe, and the feed port is plugged by the feed port plugging plate; the other end of the outer tube is provided with an air outlet, and the air outlet is plugged by an air outlet plugging plate.
4. The transfer pipe of claim 3, wherein a feed inlet gasket is disposed between the feed inlet and the feed inlet closure, and a vent gasket is disposed between the vent and the vent closure.
5. The transport pipeline of claim 4, wherein the feed inlet is further provided with a second pipe flange and a first fastener, the second pipe flange is provided with a plurality of second through holes, the feed inlet closure plate is provided with third through holes corresponding to the second through holes in a one-to-one manner, and the first fastener penetrates through the second through holes and the third through holes to fixedly connect the second pipe flange and the feed inlet closure plate;
the gas vent still installs third pipe flange and second fastener, it has a plurality of fourth through-holes to open on the third pipe flange, open on the gas vent closure plate have with the fifth through-hole of fourth through-hole one-to-one, the second fastener passes the fourth through-hole with the fifth through-hole, with third pipe flange and gas vent closure plate fixed connection.
6. The transfer pipe of claim 1, wherein the support frame comprises a fixed ring and a plurality of support rods;
the first end of each supporting rod is fixed on the fixing ring, and the supporting rods are distributed along the circumferential direction of the fixing ring;
the fixed ring is sleeved on the inner pipe, and the second end of the supporting rod supports the outer pipe.
7. The transfer pipe of claim 6, wherein an insulating layer is disposed between the second end of each support rod and the outer pipe.
8. The transfer pipe of claim 7, wherein the outer diameter of each support rod decreases in a direction away from the retaining ring.
9. The transfer pipe of claim 8, wherein each support rod is provided with a sixth through hole axially parallel to the fixing ring.
10. The transfer pipe according to any of claims 6 to 9, wherein the number of the support rods is at least four, and four support rods are uniformly distributed along the circumference of the fixing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120410070.XU CN214618252U (en) | 2021-02-24 | 2021-02-24 | Conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120410070.XU CN214618252U (en) | 2021-02-24 | 2021-02-24 | Conveying pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN214618252U true CN214618252U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120410070.XU Active CN214618252U (en) | 2021-02-24 | 2021-02-24 | Conveying pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345998A (en) * | 2023-12-04 | 2024-01-05 | 山东圣戈威新型节能保温材料有限公司 | Energy-saving heat-preserving pipeline convenient to disassemble and assemble |
-
2021
- 2021-02-24 CN CN202120410070.XU patent/CN214618252U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345998A (en) * | 2023-12-04 | 2024-01-05 | 山东圣戈威新型节能保温材料有限公司 | Energy-saving heat-preserving pipeline convenient to disassemble and assemble |
| CN117345998B (en) * | 2023-12-04 | 2024-02-27 | 山东圣戈威新型节能保温材料有限公司 | Energy-saving heat-preserving pipeline convenient to disassemble and assemble |
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