A support frame for assembling double-layer sleeves

Abstract

This utility model discloses a support frame for assembling double-layer sleeves, relating to the technical field of double-layer sleeve assembly equipment. It includes a support frame body, comprising a base frame, an extension frame on one side of the base frame, a lower guide component on the extension frame, and multiple connecting frames connected to the base frame. A top frame is connected to the top of the connecting frame at the top, and an upper guide frame is located on the side of the top frame near the lower guide component. During double-layer sleeve assembly, the upper guide frame and the lower guide component support and guide the double-layer sleeve. By limiting the upper and lower ends of the outer tube respectively through the upper and lower guide frames, constraints are achieved during double-layer sleeve assembly, thereby preventing the inner and outer tubes from deflecting under external force and reducing the impact on subsequent hot-melt butt welding processes.

Description

Technical Field

[0001] This utility model relates to the technical field of double-layer sleeve assembly equipment, and specifically to a support frame for double-layer sleeve assembly. Background Technology

[0002] In industrial sectors such as chemical engineering, nuclear fuel cycle reprocessing, and nuclear power plant operation, wastewater generated during production processes often contains radioactive nuclides or other highly hazardous chemicals. The safe discharge and disposal of such wastewater is directly related to human health, environmental safety, and the stable operation of facilities, making it a critical aspect of industrial safety management. Leaks in the pipelines can lead to the spillage of radioactive materials or highly hazardous chemicals, causing serious environmental pollution and safety accidents with often irreversible consequences. Therefore, extremely high requirements are placed on the integrity, sealing performance, and early leak detection capabilities of these drainage pipelines.

[0003] Currently, single-layer pipeline systems are commonly used for transporting high-risk media in this field. To improve safety, the common practice is to select high-grade corrosion-resistant and radiation-resistant materials (such as stainless steel and Hastelloy) and increase the pipe wall thickness, relying on the material's inherent mechanical strength and durability to resist leakage risks. In addition, monitoring points are usually installed at drainage tanks or at the end of the pipeline to determine whether the water quality meets standards or whether any abnormalities exist through periodic sampling and analysis or the installation of radiation detectors.

[0004] However, the inventors recognized that existing technologies still have significant limitations, primarily in that the overall containment barrier is only a single-layer structure with limited fault tolerance. To address these issues, the inventors developed a double-layer sleeve structure to improve system safety and reliability. However, since the entire pipeline needs to be assembled from multiple sets of double-layer sleeves, support and guidance must be applied to the sleeves during assembly. The traditional method involves setting a guide frame at the bottom of the outer tube to provide support and restraint. However, this method only constrains the bottom position of the outer tube. If uneven external force is applied during assembly, the inner and outer tubes are prone to deflection in the unconstrained direction, thus affecting subsequent hot-melt welding processes, including critical steps such as cutting, heating, and welding. Utility Model Content

[0005] The purpose of this utility model is to provide a support frame for assembling double-layer sleeves, which solves the technical problem that if uneven external force is applied during the assembly process, the inner and outer tubes are prone to deflection in the unrestrained direction, thereby affecting the subsequent hot-melt butt welding process, including key steps such as cutting, heating and welding.

[0006] The objective of this utility model can be achieved through the following technical solutions: A support frame for assembling double-layer sleeves includes a support frame body, the support frame body includes a base frame, an extension frame is provided on one side of the base frame, a lower guide component is provided on the extension frame, multiple sets of connecting frames are connected to the base frame, a top frame is connected to the top of the connecting frame located at the top, and an upper guide frame is provided on the side of the top frame near the lower guide component. During the assembly of the double-layer sleeve, the upper guide frame and the lower guide assembly support and guide the double-layer sleeve.

[0007] As a further embodiment of this utility model: the lower guide component is a lower guide frame, which is fixedly mounted on the extension frame, and the lower guide frame is correspondingly mounted to the upper guide frame.

[0008] As a further embodiment of this utility model, the lower guide frame is provided with multiple sets of V-shaped lower guide rollers.

[0009] As a further embodiment of this utility model: the upper guide frame is provided with multiple sets of upper guide rollers arranged in a V-shape.

[0010] As a further embodiment of this utility model: the upper guide frame includes an upper guide frame body, and the upper guide frame body has multiple sets of movable slots; Multiple sets of upper guide rollers are internally rotatably equipped with connecting shafts, and both ends of the connecting shafts are connected to movable bases. Multiple sets of movable bases are slidably arranged in the corresponding movable grooves, and springs are provided between the movable bases and the movable grooves.

[0011] As a further embodiment of this utility model: the lower guide component is a movable guide frame, which is slidably mounted on the extension frame; When the double-layer sleeve is introduced, the movable guide frame and the upper guide frame are misaligned.

[0012] As a further embodiment of this utility model: the movable guide frame includes a connecting base one and a connecting base two. The connecting base one is provided in one set, and the connecting base two is provided in two sets, and the two sets of connecting base two are symmetrically arranged about the connecting base one.

[0013] As a further embodiment of this utility model: a slider is provided at the bottom of the second connecting base, and a connecting platform is provided at the bottom of the first connecting base.

[0014] As a further embodiment of this utility model: a movable groove is provided in the middle of the extension frame, and sliding grooves are provided on both sides of the extension frame. An adjusting screw is provided in the movable groove, the connecting platform is threadedly connected to the adjusting screw, and the slider is slidably connected to the sliding groove.

[0015] As a further embodiment of this utility model: both ends of the adjusting screw are rotatably connected to the extension frame, and one end of the adjusting screw extends to the outside and is connected to an external driving source.

[0016] The beneficial effects of this utility model are: This utility model uses upper and lower guide frames to limit the upper and lower ends of the outer tube, respectively, to constrain the assembly of the double-layer sleeve, thereby preventing the inner and outer tubes from deflecting when subjected to external forces and reducing the impact on the subsequent hot-melt butt welding process (the subsequent hot-melt process requires cutting the end faces of the two butt-jointed inner and outer tubes, and if the inner and outer tubes are cut, it will easily lead to uneven end face cutting and uneven subsequent hot-melt butt welding, etc.).

[0017] This invention provides power through a drive source to rotate the adjusting screw, thereby enabling the movement of the movable guide frame. When it moves to a position where it is misaligned with the upper guide frame, the outer tube end of the double-layer sleeve to be connected is supported in advance, making the manual introduction of the double-layer sleeve easier. Furthermore, the alignment between the outer tube and the upper and movable guide frames is more precise, avoiding angular deviations between the outer tube and the upper and lower guide rollers during introduction, which could damage the end of the outer tube. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the supporting and guiding double-layer sleeve of this utility model; Figure 2 This is a schematic diagram of the support frame body structure in this utility model; Figure 3 This is a schematic diagram of the movable guide frame structure in this utility model; Figure 4 This is a schematic diagram of the extension frame structure in this utility model; Figure 5 This is a schematic diagram of the upper guide frame structure in this utility model; Figure 6 This is a schematic diagram of the initial state of the double-layer sleeve guide support frame body in this utility model. Figure 1 ; Figure 7 This is a schematic diagram of the initial state of the double-layer sleeve guide support frame body in this utility model. Figure 2 .

[0020] In the diagram: 100, Support frame body; 101, Base frame; 1011, Extension frame; 1012, Slide groove; 1013, Moving groove; 1014, Adjusting screw; 102, Connecting frame; 103, Top frame; 104, Upper guide frame; 1041, Upper guide frame body; 1042, Upper guide roller; 1043, Connecting shaft; 1044, Moving base; 1045, Movable groove; 105, Lower guide frame; 1051, Connecting base one; 1052, Connecting base two; 1053, Slider; 1054, Lower guide roller; 1055, Connecting platform. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 As shown, the inventors' double-layered sleeve structure includes an inner tube and an outer tube, with the outer tube sleeved outside the inner tube. Multiple sets of support rings are evenly spaced between the inner and outer tubes, connecting to the inner tube and forming a support structure between them. By using this double-layered sleeve structure, a single safety barrier is upgraded to a dual, independent safety barrier. The inner tube, as the first barrier, undertakes the main function of media transport; the outer tube, as the second barrier, constitutes a completely enclosed isolation chamber. Even if the inner tube fails and leaks, the hazardous media will be completely contained within the second barrier formed by the outer tube, thus completely preventing the direct leakage of radioactive nuclides or hazardous chemicals into the external environment.

[0023] It should be noted that the entire pipeline is formed by assembling multiple sets of double-layered sleeves, and the connection method of the multiple sets of double-layered sleeves is as follows: both the inner and outer pipes adopt the hot-melt butt welding method, which ensures a homogeneous barrier throughout the entire process from the pipe body to the interface, so that there are no shortcomings in the dual safety protection (inner pipe barrier + outer pipe barrier), and the reliability is significantly improved.

[0024] Example 1

[0025] like Figure 2As shown, this embodiment provides a support frame for assembling double-layer sleeves, including a support frame body 100. The support frame body 100 includes a base frame 101 located at a set position. An extension frame 1011 is provided on one side of the base frame 101. A lower guide frame 105 is fixedly installed on the extension frame 1011. Multiple sets of connecting frames 102 are connected to the top of the side of the base frame 101 away from the lower guide frame 105. A top frame 103 is connected to the top of the connecting frame 102 located at the top. An upper guide frame 104 is installed on the side of the top frame 103 near the lower guide frame 105.

[0026] The upper guide frame 104 and the lower guide frame 105 are respectively set. During the support and guidance, the upper guide frame 104 and the lower guide frame 105 limit the upper and lower ends of the outer tube respectively, thereby constraining the assembly of the double-layer sleeve and preventing the inner and outer tubes from deflecting when subjected to external forces, thus reducing the impact on the subsequent hot-melt butt welding process (the subsequent hot-melt process requires cutting the end faces of the two butt-jointed inner and outer tubes. If the inner and outer tubes are cut, it is easy to cause uneven end face cutting and uneven subsequent hot-melt butt welding, etc.).

[0027] Furthermore, in this embodiment, by assembling multiple sets of connecting brackets 102, the number of connecting brackets 102 can be adapted to the outer pipe diameter of the double-layer sleeve, thereby improving the applicability of the support frame.

[0028] Preferably, such as Figure 3 and Figure 5 As shown, in this embodiment, the upper guide frame 104 is provided with multiple sets of V-shaped upper guide rollers 1042, and the lower guide frame 105 is provided with multiple sets of V-shaped lower guide rollers 1054. The correspondingly arranged and V-shaped lower guide rollers 1054 and upper guide rollers 1042 effectively guide and limit the outer tube, and their contact with the outer tube surface is closer to point contact or short arc contact. This disperses pressure to a certain extent, reduces the risk of pressure damage to the tube surface, and helps protect the product surface quality.

[0029] It should be understood that there will be slight deviations in the diameter of the outer tubes of the assembled multi-stage double-layer sleeves, and the support frame needs to have a certain degree of adaptability when setting the upper and lower limits for outer tubes of different diameters. Preferably, in this embodiment, the upper guide frame 104 is as follows: Figure 5As shown, the system includes an upper guide frame body 1041, on which multiple sets of upper guide rollers 1042 are provided. Each upper guide roller 1042 has a connecting shaft 1043 rotatably mounted inside it. Both ends of the connecting shaft 1043 are connected to movable bases 1044, and movable slots 1045 are provided at corresponding positions on the upper guide frame body 1041. The movable bases 1044 at both ends of the connecting shaft 1043 are slidably mounted in the corresponding movable slots 1045, and a spring (not shown in the figure) is provided between the top of the movable base 1044 and the wall of the movable slot 1045, so that the multiple sets of upper guide rollers 1042 have an elastic reset function. This allows the support frame of this embodiment to adapt to outer tubes of different diameters (outer tubes of different diameters with slight deviations of the same size). When outer tubes of different diameters are introduced, the upper guide rollers 1042 of the upper guide frame 104 can stably limit the outer axial surface of the outer tube.

[0030] Example 2

[0031] like Figures 2-4 As shown, this embodiment, based on Embodiment 1, uses a movable guide frame instead of the fixed lower guide frame 105, which facilitates...

[0032] The guide alignment in the support frame body 100 reduces damage to the end of the outer tube.

[0033] like Figure 3 As shown, the movable guide frame in this embodiment includes a connecting base 1051 located in the middle and connecting bases 1052 located on both sides. A slider 1053 is provided at the bottom of both connecting bases 1052, and the slider 1053 is in the shape of an inverted trapezoid. Connecting platforms 1055 are provided at both ends of the bottom of the connecting base 1051. like Figure 4 As shown, a movable groove 1013 is provided in the middle of the extension frame 1011, and an adjusting screw 1014 is provided in the movable groove 1013. The two ends of the adjusting screw 1014 are rotatably connected to the extension frame 1011, and one end of the adjusting screw 1014 extends to the outside and connects to an external drive source. The aforementioned connecting platform 1055 is threadedly connected to the adjusting screw 1014, and the two sides of the connecting platform 1055 are in contact with the two sides of the movable groove 1013, which serves to limit the movement of the connecting platform 1055. Sliding grooves 1012 are symmetrically provided on both sides of the top surface of the extension frame 1011 about the movable groove 1013. The sliding grooves 1012 are inverted trapezoidal and are adapted to the slider 1053. The slider 1053 is slidably disposed in the sliding groove 1012.

[0034] Furthermore, multiple sets of lower guide rollers 1054 are also provided between the connecting base 1051 and the connecting bases 1052 on both sides, and the multiple sets of lower guide rollers 1054 in the movable guide frame are distributed in the same way as the multiple sets of lower guide rollers 1054 in the lower guide frame 105.

[0035] It should be noted that the aforementioned external driving source can be manually powered or mechanically powered, such as an electric motor. Power from the driving source causes the adjusting screw 1014 to rotate, thereby moving the movable guide frame. When it moves to a point where it is misaligned with the upper guide frame 104, the outer end of the double-layered sleeve to be docked is pre-supported (e.g., ...). Figure 6 and Figure 7 As shown), this makes the process of manually introducing the double-layer sleeve easier, and the alignment between the upper guide frame 104 and the movable guide frame is more accurate, avoiding angular deviations between the outer tube and the upper guide roller 1042 and the lower guide roller 1054 during the introduction, which could damage the end of the outer tube (when manually supporting the double-layer sleeve to introduce it into the support frame, it is difficult to maintain a stable level, which can easily cause the double-layer sleeve to tilt, resulting in angular deviations between the outer tube and the upper guide roller 1042 and the lower guide roller 1054).

[0036] It should be noted that when the activity guide frame moves to the set position, it can be limited by existing technology using pins to prevent movement during import that could affect the import effect.

[0037] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A support frame for assembling double-layer sleeves, characterized in that, The system includes a support frame body (100), which includes a base frame (101). An extension frame (1011) is provided on one side of the base frame (101). A lower guide assembly is provided on the extension frame (1011). Multiple sets of connecting frames (102) are connected to the base frame (101). A top frame (103) is connected to the top of the connecting frame (102) located at the top. An upper guide frame (104) is provided on the side of the top frame (103) near the lower guide assembly. During the assembly of the double-layer sleeve, the upper guide frame (104) and the lower guide assembly support and guide the double-layer sleeve.

2. The support frame for assembling a double-layer sleeve according to claim 1, characterized in that, The lower guide assembly is a lower guide frame (105), which is fixedly mounted on the extension frame (1011) and is correspondingly mounted to the upper guide frame (104).

3. The support frame for assembling a double-layer sleeve according to claim 2, characterized in that, The lower guide frame (105) is provided with multiple sets of V-shaped lower guide rollers (1054).

4. The support frame for assembling a double-layer sleeve according to claim 1, characterized in that, The upper guide frame (104) is provided with multiple sets of upper guide rollers (1042) arranged in a V-shape.

5. A support frame for assembling double-layer sleeves according to claim 4, characterized in that, The upper guide frame (104) includes an upper guide frame body (1041), and the upper guide frame body (1041) has multiple sets of movable slots (1045). Multiple sets of upper guide rollers (1042) are rotatably equipped with connecting shafts (1043), and both ends of the connecting shafts (1043) are connected to movable bases (1044). Multiple sets of movable bases (1044) are slidably arranged in the corresponding movable grooves (1045), and springs are provided between the movable bases (1044) and the movable grooves (1045).

6. The support frame for assembling a double-layer sleeve according to claim 1, characterized in that, The lower guide assembly is a movable guide frame, which is slidably mounted on the extension frame (1011); When the double-layer sleeve is introduced, the movable guide frame and the upper guide frame (104) are misaligned.

7. A support frame for assembling double-layer sleeves according to claim 6, characterized in that, The movable guide frame includes a first connecting base (1051) and a second connecting base (1052). The first connecting base (1051) is provided in one set, and the second connecting base (1052) is provided in two sets, and the two sets of the second connecting base (1052) are symmetrically arranged about the first connecting base (1051).

8. A support frame for assembling double-layer sleeves according to claim 7, characterized in that, The bottom of the second connecting base (1052) is provided with a slider (1053), and the bottom of the first connecting base (1051) is provided with a connecting platform (1055).

9. A support frame for assembling double-layer sleeves according to claim 8, characterized in that, The extension frame (1011) has a moving groove (1013) in the middle and sliding grooves (1012) on both sides. An adjusting screw (1014) is provided in the moving groove (1013). The connecting platform (1055) is threadedly connected to the adjusting screw (1014), and the slider (1053) is slidably connected to the sliding groove (1012).

10. A support frame for assembling double-layer sleeves according to claim 9, characterized in that, The two ends of the adjusting screw (1014) are rotatably connected to the extension frame (1011), and one end of the adjusting screw (1014) extends to the outside and is connected to the external drive source.

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