Multilayer composite stainless steel pipe spiral corrugated pressure-resistant device

Abstract

The utility model relates to spiral wave technical field discloses multilayer composite stainless steel pipe spiral wave corrugation pressure -resisting device, including the corrugated shell and the corrugated inner shell at the inside of corrugated shell, both ends of corrugated shell are fixedly connected with straight pipe shell, the inside of straight pipe inner shell is installed with the support ring, the inside of corrugated shell is highest and lowest and is all provided with the reinforced layer position. The utility model strengthens the corrugated shell through the reinforced layer, increases the reinforcing ring between the reinforced layer and the corrugated inner shell simultaneously, can improve the pressure resistance between the corrugated shell and the corrugated inner shell obviously, improves the strength of straight pipe inner shell through the support ring, reduces its deformation performance, and the outside wall of straight pipe shell is embedded and is provided with screw, after screw is taken off, can carry out the air extraction between the space of corrugated shell, straight pipe shell and straight pipe inner shell, corrugated inner shell, reduces the internal heat transfer medium, and further realizes the heat preservation performance of improving stainless steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of spiral wave technology, specifically a multi-layer composite stainless steel pipe spiral corrugated anti-compression device. Background Technology

[0002] Stainless steel corrugated pipes are installed in liquid transportation systems as flexible pressure-resistant pipe fittings to compensate for the mutual displacement of pipe or machine / equipment connection ends, absorb vibration energy, and play a role in vibration reduction and noise reduction. They have many characteristics such as good flexibility, light weight, corrosion resistance, fatigue resistance, and high and low temperature resistance, enabling them to maintain good performance even under harsh working conditions.

[0003] A Chinese patent discloses a double "S"-shaped cross-section annular corrugated pipe (authorization announcement number CN212718444U). This patented technology improves the cross-sectional shape of traditional annular corrugated pipes to achieve the superior performance of various traditional cross-section annular corrugated pipes, making them more widely applicable. It also exhibits better stiffness, compensation capacity, and durability than traditional annular corrugated pipes with various cross-sectional shapes. From a production perspective, it reduces the number of production types, improves production efficiency, and lowers production costs, making it more suitable for industrial applications. However, its compressive strength and thermal insulation performance are poor. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer composite stainless steel pipe spiral corrugated anti-compression device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-layer composite stainless steel pipe spiral corrugated anti-compression device includes a corrugated outer shell and a corrugated inner shell located inside the corrugated outer shell. Straight pipe outer shells are fixedly connected to both ends of the corrugated outer shell, and straight pipe inner shells are fixedly connected to both ends of the corrugated inner shell. A support ring is installed on the inner side of the straight pipe inner shell. A limiting end is connected to one end of both the outer sides of the corrugated outer shell and the corrugated inner shell. Reinforcing layers are provided at the highest and lowest points of the inner side of the corrugated outer shell. A reinforcing ring is fixedly connected between the reinforcing layer and the corrugated inner shell. Several through holes are opened on the inner side of the reinforcing ring. Screws are embedded in the outer wall of the straight pipe outer shell.

[0007] As a further improvement of this utility model: a connector nut is slidably sleeved on the outer side of the straight pipe shell, and a protective sleeve is slidably sleeved on the outer side of the straight pipe shell near the connector nut.

[0008] As a further improvement of this utility model: several support bars are fixedly connected to the inner side of the limiting end, and a sealing gasket is sleeved on the outer side of the straight tube shell near the limiting end.

[0009] As a further embodiment of this utility model: the support ring includes a ring body and a set of internal hexagonal sleeves located inside the ring body, and each internal hexagonal sleeve is fixedly connected to the inner wall of the external thread groove with several connecting rods.

[0010] As a further embodiment of this utility model: an external threaded groove is provided on the outer side of the ring body, and an internal thread is provided on the inner side wall of the straight tube inner shell, and the ring body and the straight tube inner shell are connected by threads.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention reinforces the corrugated outer shell with a reinforcing layer and adds a reinforcing ring between the reinforcing layer and the corrugated inner shell, which can significantly improve the compressive strength between the corrugated outer shell and the corrugated inner shell. The support ring improves the strength of the straight pipe inner shell and reduces its deformation performance. Screws are embedded in the outer wall of the straight pipe outer shell. After removing the screws, the space between the corrugated outer shell, the straight pipe outer shell and the straight pipe inner shell, and the corrugated inner shell can be evacuated to reduce the internal heat transfer medium, thereby improving the thermal insulation performance of the stainless steel pipe. Attached Figure Description

[0013] Figure 1 A schematic diagram of a multi-layer composite stainless steel pipe spiral corrugated anti-compression device;

[0014] Figure 2 A partial cross-sectional structural schematic diagram of a multi-layer composite stainless steel pipe spiral corrugated anti-compression device;

[0015] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle;

[0016] Figure 4 This is a schematic diagram of the support ring in a multi-layer composite stainless steel pipe spiral corrugated anti-compression device.

[0017] In the diagram: 1. Corrugated outer shell; 2. Straight pipe outer shell; 3. Screw; 4. Limiting end; 5. Support ring; 51. External threaded groove; 52. Ring body; 53. Internal hexagonal sleeve; 54. Connecting rod; 6. Connector nut; 7. Protective sleeve; 8. Sealing gasket; 9. Support bar; 10. Straight pipe inner shell; 11. Corrugated inner shell; 12. Reinforcing layer; 13. Reinforcing ring; 14. Through hole. Detailed Implementation

[0018] Please see Figures 1-4In this embodiment of the invention, the multi-layer composite stainless steel pipe spiral corrugated anti-compression device includes a corrugated outer shell 1 and a corrugated inner shell 11 located inside the corrugated outer shell 1. Straight pipe outer shells 2 are fixedly connected to both ends of the corrugated outer shell 1, and straight pipe inner shells 10 are fixedly connected to both ends of the corrugated inner shell 11. A support ring 5 is installed on the inner side of the straight pipe inner shell 10. A limiting end 4 is connected to one end of the outer side of both the corrugated outer shell 1 and the corrugated inner shell 11. Reinforcing layers 12 are provided at both the highest and lowest points on the inner side of the corrugated outer shell 1. A reinforcing ring 13 is fixedly connected between the reinforcing layer 12 and the corrugated inner shell 11. Since the bending stress point will occur at the highest or lowest position when the pipe bends, and the outer layer remains even after the inner layer is damaged, the corrugated outer shell 1 is reinforced by the reinforcing layer 12. Meanwhile, a reinforcing ring 13 is added between the reinforcing layer 12 and the corrugated inner shell 11, which can significantly improve the compressive strength of the corrugated outer shell 1 and the corrugated inner shell 11. Several through holes 14 are opened on the inner side of the reinforcing ring 13. Screws 3 are embedded in the outer wall of the straight tube shell 2. When it is necessary to improve the heat insulation performance of the stainless steel tube, the screws 3 are removed, and a vacuum pump is used to evacuate the space between the corrugated outer shell 1, the straight tube shell 2 and the straight tube inner shell 10 and the corrugated inner shell 11 from the screws 3. The gas between the corrugated outer shell 1 and the corrugated inner shell 11 can flow through the through holes 14 to reduce the internal heat transfer medium, thereby improving the heat insulation performance of the stainless steel tube. The corrugated outer shell 1, the straight tube shell 2, the limiting end 4, the support ring 5, the straight tube inner shell 10 and the corrugated inner shell 11 are all stainless steel components.

[0019] exist Figure 1 In the process, a connector nut 6 is slidably sleeved on the outer side of the straight pipe shell 2, and a protective sleeve 7 is slidably sleeved on the outer side of the straight pipe shell 2 near the connector nut 6. The connector nut 6 is tightened on the external threaded connector, and the connector nut 6 is limited by the limiting end 4. Then the protective sleeve 7 is sleeved on the connector nut 6 to protect the connector nut 6, so that the stainless steel pipe can be connected to the external pipeline.

[0020] exist Figure 1 and Figure 2 In the middle, several support bars 9 are fixedly connected to the inner side of the limiting end 4. The support bars 9 improve the strength of the limiting end 4 and reduce its deformation capacity. A sealing gasket 8 is sleeved on the outer side of the straight pipe shell 2 near the limiting end 4. The sealing gasket 8 improves the sealing performance between the limiting end 4 and the joint nut 6 and reduces liquid leakage.

[0021] exist Figure 1 and Figure 4In this structure, the support ring 5 includes a ring body 52 and a set of internal hexagonal sleeves 53 located inside the ring body 52. ​​Each internal hexagonal sleeve 53 is fixedly connected to the inner wall of the external threaded groove 51 with several connecting rods 54. The support ring 5 improves the strength of the straight pipe inner shell 10 and reduces its deformation performance. The outer side of the ring body 52 is provided with an external threaded groove 51, and the inner wall of the straight pipe inner shell 10 is provided with an internal thread. The ring body 52 and the straight pipe inner shell 10 are connected by threads. Therefore, by inserting an external hexagonal wrench into the internal hexagonal sleeve 53, the support ring 5 can be rotated inside the straight pipe inner shell 10 to adjust its position within the straight pipe inner shell 10. The support ring 5 can also be removed as needed.

[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A multi-layer composite stainless steel pipe spiral corrugated anti-compression device, comprising a corrugated outer shell (1) and a corrugated inner shell (11) located inside the corrugated outer shell (1), characterized in that, Both ends of the corrugated outer shell (1) are fixedly connected to straight tube outer shells (2), both ends of the corrugated inner shell (11) are fixedly connected to straight tube inner shells (10), a support ring (5) is installed on the inner side of the straight tube inner shell (10), one end of the outer side of the corrugated outer shell (1) and the corrugated inner shell (11) are connected to a limit end (4), a reinforcing layer (12) is provided at the highest and lowest positions of the inner side of the corrugated outer shell (1), a reinforcing ring (13) is fixedly connected between the reinforcing layer (12) and the corrugated inner shell (11), a number of through holes (14) are opened on the inner side of the reinforcing ring (13), and screws (3) are embedded in the outer wall of the straight tube outer shell (2).

2. The multi-layer composite stainless steel pipe spiral corrugated anti-compression device according to claim 1, characterized in that, A connector nut (6) is slidably sleeved on the outside of the straight pipe shell (2), and a protective sleeve (7) is slidably sleeved on the outside of the straight pipe shell (2) near the connector nut (6).

3. The multi-layer composite stainless steel pipe spiral corrugated anti-compression device according to claim 1, characterized in that, Several support bars (9) are fixedly connected to the inner side of the limiting end (4), and a sealing gasket (8) is sleeved on the outer side of the straight tube shell (2) near the limiting end (4).

4. The multi-layer composite stainless steel pipe spiral corrugated anti-compression device according to claim 1, characterized in that, The support ring (5) includes a ring body (52) and a set of internal hexagonal sleeves (53) located inside the ring body (52). Each internal hexagonal sleeve (53) is fixedly connected to the inner wall of the external threaded groove (51) with several connecting rods (54).

5. The multi-layer composite stainless steel pipe spiral corrugated anti-compression device according to claim 4, characterized in that, The outer side of the ring (52) is provided with an external threaded groove (51), and the inner wall of the straight tube inner shell (10) is provided with an internal thread. The ring (52) and the straight tube inner shell (10) are connected by threads.

Images