CN221003731U - Pipe orifice fixing structure for buried tank connecting pipe - Google Patents
Pipe orifice fixing structure for buried tank connecting pipe Download PDFInfo
- Publication number
- CN221003731U CN221003731U CN202322878625.5U CN202322878625U CN221003731U CN 221003731 U CN221003731 U CN 221003731U CN 202322878625 U CN202322878625 U CN 202322878625U CN 221003731 U CN221003731 U CN 221003731U
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- pipe orifice
- fixing structure
- pipe
- angle steel
- equipment
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The pipe orifice fixing structure for the buried tank connecting pipe comprises flange covers, supporting plates, supporting angle steel, bolts and nuts, wherein one flange cover is arranged on the pipe orifice of each connecting pipe through the bolts and the nuts, a plurality of supporting plates are vertically welded on each flange cover, and each supporting plate is fixedly connected with the supporting angle steel through the bolts and the nuts. The pipe orifice fixing structure reduces the deformation of the connecting pipe caused by overlarge transportation load in the transportation process of the buried tank, meets the safety requirement in the transportation process of equipment, and avoids the direct installation of the pipe orifice fixing structure on the tank body, thereby reducing the local stress increase caused by the partial thermal expansion of the equipment due to the pipe orifice fixing structure under the high-temperature operation working condition, reducing the risk of damage caused by overlarge local stress in the operation process of the equipment, and reducing the manufacturing and installation difficulties of the equipment and the pipe orifice fixing structure. The pipe orifice fixing structure has wide application range and is not limited in the aspects of buried equipment, pipe orifice size specification, pipe orifice number and the like.
Description
Technical Field
The utility model relates to a fixing structure of a large pressure container, in particular to a pipe orifice fixing structure for a buried tank connecting pipe.
Background
The buried tank is a pressure vessel for storing special media, is buried underground usually based on the influence and safety consideration to the environment, has a large equipment body, has a large specification, can reach several meters in diameter and tens of meters in length, and is welded and installed with a plurality of connecting pipes at the top of the equipment body due to the requirement of process operation. The buried tank has the structural characteristics that the heights of all the connecting pipes exposed out of the ground are consistent, namely the pipe orifices of all the connecting pipes are positioned at the same elevation, the distances from the flange sealing surface of the pipe orifice to the central line of the equipment are the same, and the nominal diameters of the pipe orifices are different due to the different sizes of the operation process requirements. The buried depth of the buried tank is deeper, the extension length of the pipe orifice of the connecting pipe is as long as a plurality of meters, and the buried tank needs to bear certain pressure and temperature.
The buried tank is subjected to combined actions such as internal pressure, equipment body gravity, external sand gravity (buoyancy), saddle support counter force, equipment body temperature difference thermal stress and the like during normal operation, and is relatively complex in stress. Because of the requirement of process operation, the pipe orifice of the connecting pipe has different sizes and longer overhanging length, and the pipe orifice usually extends out of the ground according to the design requirement. The pipe orifice of each connecting pipe (with the extension length of more than 300mm and the nominal diameter of less than 80 mm) is individually reinforced and fixed one by adopting reinforcing rib plates on the equipment body according to engineering habit requirements, and the fixing mode is to weld oblique reinforcing rib plates between the side face of the pipe orifice and the equipment body. Because the extension length of the connecting pipe is longer, reinforcing rib plates of the pipe orifice of the connecting pipe need to be lengthened in equal proportion, the quantity is more, the reinforcing rib plates are easy to interfere with each other, more importantly, under the normal operation state of the buried tank, the influence of equipment temperature difference stress (-37 ℃ to 300 ℃) and thermal expansion is considered, the reinforcing between the connecting pipe and the equipment body can generate larger constraint on the equipment body and the connecting pipe, larger stress is further generated, and the local damage of the connecting pipe and the shell is easy to occur. Furthermore, for an ultra-long nozzle having an extension length of the nozzle of more than 3000mm, there is no effective nozzle fixing structure in the prior art. If the connecting pipe is not fixed, the ultra-long connecting pipe can generate larger deformation and stress due to larger load in the process of land transportation or ocean transportation, and then local damage occurs.
Considering that the equipment body and the adapter are in the transportation process, because of the existence of loads (acceleration braking/starting acceleration) of land transportation and loads (front and back, left and right and up and down acceleration) of sea transportation, and the loads are relatively large in general, the loads act on the pipe orifice to cause large bending deformation of the long adapter, so that large local stress is generated between the adapter and the root of the equipment body, the damage is easy to occur, the problem of fixing the pipe orifice of the adapter in the transportation process of the equipment needs to be considered, and the problem of influence on the subsequent operation of the equipment can not be caused when the pipe orifice of the adapter is fixed in the transportation process, and the removability of fixing measures needs to be considered. Based on the above consideration, the utility model provides a pipe orifice fixing structure for a buried tank connecting pipe.
Disclosure of utility model
The utility model aims to solve the technical problem of providing the pipe orifice fixing structure for the buried tank connecting pipe, which has a simple structure, meets the safety requirement in the transportation process of equipment, reduces the risk of damage caused by overlarge local stress in the operation process of the equipment, and reduces the manufacturing and mounting difficulties of the equipment and the pipe orifice fixing structure.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a buried tank takes over and uses mouth of pipe fixed knot constructs, the top welding of the jar body of buried tank has many takeovers, the bottom of the jar body install the saddle, this fixed knot constructs including flange closure, backup pad, supporting angle steel, bolt and nut, every the mouth of pipe of takeovers on be equipped with through bolt and nut and install one the flange closure, every the flange closure on perpendicular welding have a plurality of the backup pad, every the backup pad pass through bolt and nut with supporting angle steel fixed connection.
The combined detachable pipe orifice fixing structure formed by the flange cover, the support plate, the support angle steel, the bolt and the nut is simple in structure, and all the components of the pipe orifice fixing structure are connected into a whole, so that the pipe orifice fixing structure has the function of effectively fixing the pipe orifice, and can be conveniently and quickly detached.
All the pipe orifices are effectively fixed, so that the safety requirement in the equipment transportation process can be met. After the equipment is transported to the site, the supporting angle steel can be removed, and the flange cover is removed together with the supporting plate. After the pipe orifice fixing structure is completely removed, each pipe orifice can be connected with a designed process pipeline or instrument on site.
Preferably, the supporting angle steel comprises a longitudinal angle steel and a transverse angle steel which are fixedly connected, the supporting plate above the connecting pipes which are longitudinally arranged along the tank body is fixedly connected with the longitudinal angle steel through bolts and nuts, and the supporting plate above the connecting pipes which are transversely arranged along the tank body is fixedly connected with the transverse angle steel through bolts and nuts.
Further, the longitudinal angle steel is fixedly connected with the transverse angle steel through welding. Or the longitudinal angle steel is fixedly connected with the transverse angle steel through bolts and nuts.
Preferably, an oval hole for the bolt to penetrate is formed in the upper portion of each supporting plate, so that the installation and connection effect of the supporting plates and the supporting angle steel are guaranteed.
Compared with the prior art, the utility model has the following advantages: the pipe orifice fixing structure not only reduces the deformation of the connecting pipe caused by overlarge transportation load in the transportation process of the buried tank, meets the safety requirement in the transportation process of equipment, but also avoids the direct installation of the pipe orifice fixing structure on the tank body, thereby reducing the increase of local stress caused by the partial thermal expansion of the pipe orifice fixing structure under the high-temperature operation working condition of the equipment, reducing the risk of damage caused by overlarge local stress in the operation process of the equipment, and reducing the manufacturing and installation difficulties of the equipment and the pipe orifice fixing structure. The pipe orifice fixing structure has wide application range and is not limited in the aspects of buried equipment, pipe orifice size specification, number and the like.
Drawings
FIG. 1 is an elevation view showing the effect of a spout fixing structure mounted on a can body of a buried can according to an embodiment;
FIG. 2 is a top view showing the effect of the pipe orifice fixing structure mounted on the tank body of the buried tank according to the embodiment;
FIG. 3 is a front view showing the effect of a support plate welded to a flange cover according to the embodiment;
FIG. 4 is a side view showing the effect of a support plate connected to a flange cover and a support angle in an embodiment;
Specific reference numerals in the drawings are as follows:
1-tank body, 11-saddle, 2-take over, 3-flange cover, 4-backup pad, 41-elliptical hole, 5-support angle steel, 51-longitudinal angle steel, 52-transverse angle steel, 6-bolt, 7-nut.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
The pipe orifice fixing structure for the buried tank pipe in the embodiment is characterized in that the buried tank is applied as shown in fig. 1-4, a plurality of pipe orifices 2 with the same height are welded at the top of a tank body 1 of the buried tank, the pipe orifices of the plurality of pipe orifices 2 have different nominal diameters (from tens of millimeters to thousands of millimeters), the overhanging length is larger than 3000mm, and a saddle 11 is arranged at the bottom of the tank body 1. The diameter 3800mm, the buried depth 7370mm, the pipe orifice extension length 3470mm, the design pressure 0.4Mpa and the design temperature 300 ℃.
The pipe orifice fixing structure for the buried tank connecting pipe in the embodiment comprises flange covers 3, supporting plates 4, supporting angle steel 5, bolts 6 and nuts 7, wherein one flange cover 3 is installed on the pipe orifice of each connecting pipe 2 through the bolts 6 and the nuts 7, 1-2 supporting plates 4 are vertically welded on each flange cover 3, each supporting plate 4 is fixedly connected with the supporting angle steel 5 through the bolts 6 and the nuts 7, and oval holes 41 which are arranged transversely and are penetrated by the bolts 6 are formed in the upper portion of each supporting plate 4.
In this embodiment, the supporting angle 5 includes a longitudinal angle 51 and a transverse angle 52 fixedly connected by welding, the supporting plate 4 above the connecting pipes 2 arranged longitudinally along the tank 1 is fixedly connected with the longitudinal angle 51 by bolts 6 and nuts 7, and the supporting plate 4 above the connecting pipes 2 arranged transversely along the tank 1 is fixedly connected with the transverse angle 52 by bolts 6 and nuts 7.
And carrying out three-dimensional modeling on the buried tank and the pipe orifice by adopting known ANSYS software, and simultaneously carrying out thermal analysis and stress analysis to further verify the safety performance and the service performance of the structure. Through comprehensive analysis, under the action of thermal expansion and external load, the tank body 1 and the pipe orifice are at lower levels corresponding to allowable stress values, and the tank body 1 and the pipe orifice are safe under normal operation working conditions without external support.
The pipe orifice fixing structure adopts the combined detachable pipe orifice fixing structure formed by the five parts of the flange cover 3, the supporting plate 4, the supporting angle steel 5, the bolt 6 and the nut 7, has simple structure, and not only plays a role in effectively fixing the pipe orifice, but also can realize convenient dismantling of the fixing structure. All the pipe orifices are effectively fixed, so that the safety requirement in the equipment transportation process can be met. After the equipment is transported to the site, the supporting angle steel 5 can be removed, and the flange cover 3 is removed together with the supporting plate 4, so that the normal operation of the tank body 1 is not affected. After the pipe orifice fixing structure is completely removed, each pipe orifice can be connected with a designed process pipeline or instrument on site.
Claims (5)
1. The pipe orifice fixing structure for the buried tank pipe comprises a plurality of pipe orifices welded at the top of a tank body of the buried tank, and a saddle is arranged at the bottom of the tank body.
2. The pipe orifice fixing structure for a buried tank pipe according to claim 1, wherein the supporting angle steel comprises a longitudinal angle steel and a transverse angle steel which are fixedly connected, the supporting plate above the pipe orifice which is longitudinally arranged along the tank body is fixedly connected with the longitudinal angle steel through bolts and nuts, and the supporting plate above the pipe orifice which is transversely arranged along the tank body is fixedly connected with the transverse angle steel through bolts and nuts.
3. The pipe orifice fixing structure for a buried tank pipe according to claim 2, wherein the longitudinal angle steel and the transverse angle steel are fixedly connected by welding.
4. The pipe orifice fixing structure for a buried tank pipe according to claim 2, wherein the longitudinal angle steel and the transverse angle steel are fixedly connected through bolts and nuts.
5. The pipe orifice fixing structure for a buried tank pipe according to claim 1, wherein an elliptical hole is provided in an upper portion of each of the support plates, the elliptical hole being provided in a lateral direction through which a bolt is inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322878625.5U CN221003731U (en) | 2023-10-26 | 2023-10-26 | Pipe orifice fixing structure for buried tank connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322878625.5U CN221003731U (en) | 2023-10-26 | 2023-10-26 | Pipe orifice fixing structure for buried tank connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221003731U true CN221003731U (en) | 2024-05-24 |
Family
ID=91093195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322878625.5U Active CN221003731U (en) | 2023-10-26 | 2023-10-26 | Pipe orifice fixing structure for buried tank connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221003731U (en) |
-
2023
- 2023-10-26 CN CN202322878625.5U patent/CN221003731U/en active Active
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