Sealing connection structure and technology for penetrating through multiple closed cavities

Abstract

The invention relates to the technical field of sealing connection structures, in particular to a sealing connection structure and process for penetrating through multiple closed cavities, the sealing connection structure comprises a welding pipe and a plurality of pressing assemblies, the top and the bottom of the welding pipe are fixedly connected with a base layer pipe plate, and each pressing assembly comprises a plurality of first hollow bolts; the bottom of the first hollow bolt penetrates through the stacked tube plate and is connected with a thread formed in the inner edge of the top of the welded tube, and in order to ensure the installation of the penetration piece and the sealing effect of all the cavities and facilitate the installation of the penetration piece, the first hollow bolt is used for replacing the welding connection mode; assembly operation can be easily carried out only from the tops of the stacked tube plates, the problem that the space of a sealing cavity between the tube plates is narrow is solved, and the installation efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sealed connection structures, and particularly relates to a sealed connection structure and process for penetrating multiple sealed cavities. Background Art

[0002] In fields such as fine chemical industry and coal chemical industry, many pipe fittings, electrical components, etc. need to penetrate multiple sealed cavities for the transmission of media or electrical signals. Since such penetrating parts are generally applied in large numbers in an array, high requirements are put forward for the assembly, sealing, etc. of each sealed cavity.

[0003] In the existing sealed connection structures, most are assembled by arranging hollow connectors between multiple tube sheets and welding the hollow connectors to the tube sheets, so as to form sealed cavities between adjacent tube sheets. This solution requires welding layer by layer. Due to the large number of sealed cavities, when the size of the sealed cavity is small, the welding work of the subsequent assembled tube sheets is extremely difficult, and the assembly connection method of a large number of welds is also very complex, and it is difficult to control the processing accuracy. Moreover, when the tube sheet is deformed and dented, it is not easy to level it, resulting in low assembly quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a sealed connection structure and process for penetrating multiple sealed cavities, which can facilitate the installation of the penetrating parts while ensuring the installation of the penetrating parts and the sealing effect of each cavity.

[0005] To achieve this purpose, the present invention adopts the following technical solutions: Provide a sealed connection structure for penetrating multiple sealed cavities, including a welding pipe and a plurality of pressing components. Both the top and bottom of the welding pipe are fixedly connected to the base tube sheet. The pressing components include a plurality of first hollow bolts, and the bottom of the first hollow bolts passes through the stacked tube sheets and is threadedly connected to the internal edge of the top of the welding pipe.

[0006] Preferably, it further includes a top concave component. The top concave component includes a plurality of second hollow bolts. The bottom of the second hollow bolts passes through the stacked tube sheets and is in plug-in fit with the top of the welding pipe. The periphery of the second hollow bolts is threadedly connected to the stacked tube sheets. The stacked tube sheets are provided with insertion holes for the first hollow bolts and the second hollow bolts to pass through.

[0007] Preferably, the periphery of the base tube sheet and the periphery of the stacked tube sheets are both in mutual fit with the inner wall of the shell. Sealing rings are fixedly connected to the bottom of the first hollow bolts and the bottom of the second hollow bolts, and the bottom of the sealing rings is in mutual contact with the top of the stacked tube sheets.

[0008] Preferably, the superimposed tube sheet, the pressing assembly and the top concave assembly are all multi-layered. Threaded holes are provided at the tops of the first hollow bolt and the second hollow bolt. The bottom of the first hollow bolt is threadedly connected to the inner wall of the threaded hole of the lower-layer first hollow bolt or the first hollow bolt, and the bottom of the second hollow bolt is inserted and fitted with the inner wall of the threaded hole of the lower-layer first hollow bolt or the first hollow bolt.

[0009] Preferably, an annular groove is provided on the outer periphery of the top of the welded tube, and the annular groove fits with the inner wall of the tube sheet.

[0010] Preferably, a loosening prevention mechanism is further included. The loosening prevention mechanism includes a plurality of tooth blocks. The plurality of tooth blocks are circumferentially distributed at the bottoms of the first hollow bolt and the second hollow bolt. The tops of the plurality of tooth blocks are fixedly connected to the bottoms of the first hollow bolt and the second hollow bolt respectively. The tooth blocks are made of elastic metal. A plurality of inclined grooves are provided on the top of the welded tube and the bottom wall of the threaded hole, and the inner walls of the inclined grooves are in contact with the tooth blocks.

[0011] The present invention also provides a connection process for a sealing connection structure for penetrating multiple sealed cavities, including the following steps. Step 1: Place the first base tube sheet into the shell, insert the bottom of the welded tube into the reserved hole position on the base tube sheet, then place the second base tube sheet into the shell, and insert the reserved hole position on it into the annular groove at the top of the welded tube so that the top and bottom of the welded tube are flush with the top and bottom of the two tube sheets respectively. Step 2: Weld the connection between the welded tube and the tube sheet from the top and bottom respectively, and polish the welded part smoothly. Step 3: Open a threaded groove for the second hollow bolt to pass through at the concave part of the superimposed tube sheet, place the superimposed tube sheet into the shell, and insert the first hollow bolt and the second hollow bolt through the reserved hole position and the threaded groove respectively so that the first hollow bolt and the second hollow bolt are inserted into the welded tube. Step 4: Rotate the first hollow bolt to thread it with the welded tube, tightly press the superimposed tube sheet on the top of the second tube sheet, then rotate the second hollow bolt to lift the concave part of the superimposed tube sheet to a suitable height, and adjust the third tube sheet to a horizontal state. Step 5: Repeat Step 4 to Step 6. The first hollow bolt and the second hollow bolt can be connected up and down through the opened threaded holes, so that while installing the remaining superimposed tube sheets into the shell, adjust the position of the top concave assembly according to the shape of the superimposed tube sheet, and then pass a plurality of through members through a plurality of first hollow bolts, a plurality of second hollow bolts and a plurality of welded members respectively and fix them to complete the assembly.

[0012] The beneficial effects of the present invention: 1. When assembling the sealed connection mechanism of the present invention, first weld the connection between the welded pipe and the tube sheet from the top and bottom respectively, and grind the welded part flat. Then insert the first hollow bolt through the reserved hole positions on the stacked tube sheets, and rotate the first hollow bolt to thread-connect it with the welded pipe, pressing the stacked tube sheets tightly against the top of the second tube sheet to achieve a fixing effect. Thus, by using the first hollow bolt instead of welding for the connection method, the assembly operation can be easily carried out only from the top of the stacked tube sheets, solving the problem of the narrow sealing cavity space between the tube sheets.

[0013] 2. Through the top-dip component provided by the present invention, when there is a depression on the stacked tube sheet, insert the second hollow bolt through the threaded groove opened at the depression of the stacked tube sheet, so that the second hollow bolt is inserted into the welded pipe. At this time, the bottom of the second hollow bolt abuts against the top inner wall of the welded pipe. Then rotate the second hollow bolt to lift the depression of the stacked tube sheet to a suitable height, and the third tube sheet can be adjusted to a horizontal state, improving the assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a cross-sectional view of the pressing component structure of the present invention.

[0016] Figure 2 It is a cross-sectional view of the top-dip component structure of the present invention.

[0017] Figure 3 It is a cross-sectional view of the housing structure of the present invention.

[0018] Figure 4 It is a cross-sectional view of the tube sheet structure of the present invention.

[0019] Figure 5 It is the three-dimensional structure disassembly of the present invention Figure 1 .

[0020] Figure 6 It is the three-dimensional structure disassembly of the present invention Figure 2 .

[0021] In the figure: 1. Welded pipe; 10. Annular groove; 11. Base tube sheet; 12. Stacked tube sheet; 120. Insertion hole; 13. Sealing ring; 14. Housing; 2. Pressing component; 20. First hollow bolt; 200. Threaded hole; 201. Inclined groove; 3. Top concave component; 30. Second hollow bolt; 4. Anti-loosening mechanism; 40. Tooth block. Detailed implementation manners

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0023] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation of this patent; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, which does not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0024] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] As Figures 1 to 6 shown: A sealing connection structure for penetrating multiple sealed cavities, including a welding pipe 1 and a plurality of pressing components 2. Both the top and bottom of the welding pipe 1 are fixedly connected to the base pipe plate 11. The pressing component 2 includes a plurality of first hollow bolts 20. The bottom of the first hollow bolt 20 passes through the stacked pipe plate 12 and is threadedly connected to the inner edge of the top of the welding pipe 1.

[0027] When assembling the sealed connection mechanism, first place the first base tube sheet 11 into the housing, and insert the bottom of the welded tube 1 into the reserved hole position on the base tube sheet 11. Then place the second base tube sheet 11 into the housing, and align the reserved hole position on it with the annular groove 10 at the top of the welded tube 1 and insert it, so that the top and bottom of the welded tube 1 are flush with the top and bottom of the two tube sheets respectively. Weld the connection between the welded tube 1 and the tube sheet from the top and bottom respectively, and polish the welded part flat. Then place the stacked tube sheet 12 into the housing, insert the first hollow bolt 20 through the reserved hole position on the stacked tube sheet 12, so that the bottom of the first hollow bolt 20 is inserted into the welded tube 1, and rotate the first hollow bolt 20 to make it threadedly connected with the welded tube 1, pressing the stacked tube sheet 12 tightly against the top of the second tube sheet to achieve a fixing effect. By using the first hollow bolt 20 instead of welding for the connection method, the assembly operation can be easily carried out only from the top of the stacked tube sheet 12, solving the problem of the narrow sealing cavity space between the tube sheets.

[0028] It further includes a top concave component 3. The top concave component 3 includes a plurality of second hollow bolts 30. The bottom of the second hollow bolt 30 passes through the stacked tube sheet 12 and is inserted and matched with the top of the welded tube 1. The periphery of the second hollow bolt 30 is threadedly connected with the stacked tube sheet 12. A jack hole 120 for the first hollow bolt 20 and the second hollow bolt 30 to pass through is provided on the stacked tube sheet 12.

[0029] When a depression appears on the stacked tube sheet 12, first open a threaded groove for the second hollow bolt 30 to pass through at the depression of the stacked tube sheet 12, then place the stacked tube sheet 12 into the housing, and insert the second hollow bolt 30 through the threaded groove, so that the second hollow bolt 30 is inserted into the welded tube 1. At this time, the bottom of the second hollow bolt 30 abuts against the top inner wall of the welded tube 1, and then rotate the second hollow bolt 30 to lift the depression of the stacked tube sheet 12 to a suitable height, which can adjust the third tube sheet to a horizontal state and improve the assembly quality.

[0030] The peripheries of the base tube sheet 11 and the stacked tube sheet 12 are both in mutual contact with the inner wall of the housing 14. Sealing rings 13 are fixedly connected to the bottoms of the first hollow bolt 20 and the second hollow bolt 30. The bottom of the sealing ring 13 abuts against the top of the stacked tube sheet 12.

[0031] The sealing ring 13 is made of rubber material. Through the setting of the sealing ring 13, the sealing ring 13 can be extruded during assembly, ensuring the sealing between the tube sheets.

[0032] The superimposed tube sheet 12, the pressing assembly 2 and the indentation assembly 3 are all multi-layered. Threaded holes 200 are provided at the tops of the first hollow bolt 20 and the second hollow bolt 30. The bottom of the first hollow bolt 20 is threadedly connected to the inner wall of the threaded hole 200 of the lower-layer first hollow bolt 20 or the first hollow bolt 20, and the bottom of the second hollow bolt 30 is in plug-in fit with the inner wall of the threaded hole 200 of the lower-layer first hollow bolt 20 or the first hollow bolt 20.

[0033] When installing the multi-layer superimposed tube sheet 12, the depression positions on different superimposed tube sheets 12 are different. Through the provided threaded holes 200, the first hollow bolt 20 and the second hollow bolt 30 can be connected to each other, so that different pressing assemblies 2 and indentation assemblies 3 can be set according to the depression positions on each layer of the superimposed tube sheet 12, expanding the applicable range of this solution and further improving the installation quality.

[0034] An annular groove 10 is provided on the outer periphery of the top of the welded tube 1, and the annular groove 10 fits with the inner wall of the tube sheet.

[0035] Through the provided annular groove 10, when the welded tube 1 is welded to the base tube sheet 11, the base tube sheet 11 can extend into the welded tube 1, increasing the contact area between the welded tube 1 and the base tube sheet 11, thereby improving the welding strength.

[0036] It further includes a loosening prevention mechanism 4. The loosening prevention mechanism 4 includes a plurality of tooth blocks 40. The plurality of tooth blocks 40 are circumferentially distributed at the bottoms of the first hollow bolt 20 and the second hollow bolt 30. The tops of the plurality of tooth blocks 40 are fixedly connected to the bottoms of the first hollow bolt 20 and the second hollow bolt 30 respectively. The tooth blocks 40 are made of elastic metal. A plurality of inclined grooves 201 are provided on the top of the welded tube 1 and the bottom wall of the threaded hole 200, and the inner walls of the inclined grooves 201 are in contact with the tooth blocks 40.

[0037] When the first hollow bolt 20 and the second hollow bolt 30 are rotated clockwise, the tooth blocks 40 at their bottoms rotate with them and are extruded by the inner wall of the inclined surface on one side of the inclined groove 201. Since the tooth blocks 40 are made of elastic metal, the tooth blocks 40 are deformed and slide into another inclined groove 201. As the first hollow bolt 20 and the second hollow bolt 30 are tightened, the tooth blocks 40 finally stay in one of the inclined grooves 201. When vibration occurs, the tooth blocks 40 are in contact with the inner wall on the other side of the inclined groove 201, making it impossible for them to rotate counterclockwise, thereby preventing the first hollow bolt 20 and the second hollow bolt 30 from loosening due to vibration.

[0038] This embodiment also provides a connection process for a sealing connection structure for penetrating multiple sealed cavities, including the following steps. Step 1: Place the first base tube sheet 11 into the housing, insert the bottom of the welding tube 1 into the reserved hole position on the base tube sheet 11, then place the second base tube sheet 11 into the housing, and align the reserved hole position on it with the annular groove 10 at the top of the welding tube 1 and insert it, so that the top and bottom of the welding tube 1 are flush with the top and bottom of the two tube sheets respectively. Step 2: Weld the connection between the welding tube 1 and the tube sheet from the top and bottom respectively, and polish the welded joints smoothly. Step 3: Open a threaded groove in the recess of the stacked tube sheet 12 for the second hollow bolt 30 to pass through, place the stacked tube sheet 12 into the housing, and insert the first hollow bolt 20 and the second hollow bolt 30 through the reserved hole positions and the threaded groove respectively, so that the first hollow bolt 20 and the second hollow bolt 30 are inserted into the welding tube 1. Step 4: Rotate the first hollow bolt 20 to make it threadedly connected to the welding tube 1, tightly press the stacked tube sheet 12 against the top of the second tube sheet, then rotate the second hollow bolt 30 to lift the recess of the stacked tube sheet 12 to an appropriate height, and adjust the third tube sheet to a horizontal state. Step 5: Repeat Step 4 to Step 6. Through the opened threaded holes 200, the first hollow bolt 20 and the second hollow bolt 30 can be connected up and down. Thus, while installing the remaining stacked tube sheets 12 into the housing, adjust the position of the top concave assembly 3 according to the shape of the stacked tube sheet 12, and then pass multiple through-pieces through multiple first hollow bolts 20, multiple second hollow bolts 30 and multiple welding pieces and fix them to complete the assembly.

[0039] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of clearly describing the positional relationship and functions between various components.

Claims

1. A sealed connection structure for penetrating multiple sealed cavities, characterized in that, It includes a welded pipe (1) and a plurality of pressing components (2). Both the top and bottom of the welded pipe (1) are fixedly connected to the base tube sheet (11). The pressing component (2) includes a plurality of first hollow bolts (20). The bottom of the first hollow bolt (20) passes through the stacked tube sheet (12) and is threadedly connected to the inner edge of the top of the welded pipe (1).

2. The sealed connection structure for penetrating multiple sealed cavities according to claim 1, wherein It further includes a top concave component (3). The top concave component (3) includes a plurality of second hollow bolts (30). The bottom of the second hollow bolt (30) passes through the stacked tube sheet (12) and is in plug-in fit with the top of the welded pipe (1). The outer periphery of the second hollow bolt (30) is threadedly connected to the stacked tube sheet (12). A jack (120) for the first hollow bolt (20) and the second hollow bolt (30) to pass through is provided on the stacked tube sheet (12).

3. The sealed connection structure for penetrating multiple sealed cavities according to claim 2, characterized in that, The outer periphery of the base tube sheet (11) and the outer periphery of the stacked tube sheet (12) are both in mutual contact with the inner wall of the housing (14). Sealing rings (13) are fixedly connected to the bottoms of the first hollow bolt (20) and the second hollow bolt (30). The bottom of the sealing ring (13) abuts against the top of the stacked tube sheet (12).

4. A sealed connection structure for penetrating multiple sealed cavities according to claim 2, characterized in that, The stacked tube sheet (12), the pressing component (2) and the top concave component (3) are all multi-layered. Threaded holes (200) are provided at the tops of the first hollow bolt (20) and the second hollow bolt (30). The bottom of the first hollow bolt (20) is threadedly connected to the inner wall of the threaded hole (200) of the lower-layer first hollow bolt (20) or the first hollow bolt (20). The bottom of the second hollow bolt (30) is in plug-in fit with the inner wall of the threaded hole (200) of the lower-layer first hollow bolt (20) or the first hollow bolt (20).

5. A sealed connection structure for penetrating multiple sealed cavities according to claim 1, characterized in that, An annular groove (10) is provided on the outer periphery of the top of the welded pipe (1). The annular groove (10) is in mutual contact with the inner wall of the tube sheet.

6. A sealed connection structure for penetrating multiple sealed cavities according to claim 2, characterized in that, It further includes an anti-loosening mechanism (4). The anti-loosening mechanism (4) includes a plurality of tooth blocks (40). The plurality of tooth blocks (40) are circumferentially distributed at the bottoms of the first hollow bolt (20) and the second hollow bolt (30). The tops of the plurality of tooth blocks (40) are respectively fixedly connected to the bottoms of the first hollow bolt (20) and the second hollow bolt (30). The tooth block (40) is made of elastic metal. A plurality of inclined grooves (201) are provided on the top of the welded pipe (1) and the bottom wall of the threaded hole (200). The inner wall of the inclined groove (201) abuts against the tooth block (40).

7. The connection process of a sealing connection structure for penetrating multiple sealed cavities according to claim 3, characterized in that, It includes the following steps; Step 1: Place the first base tube sheet (11) into the housing, insert the bottom of the welded pipe (1) into the reserved hole position on the base tube sheet (11), then place the second base tube sheet (11) into the housing, and align the reserved hole position on it with the annular groove (10) at the top of the welded pipe (1) and insert it, so that the top and bottom of the welded pipe (1) are respectively flush with the top and bottom of the two tube sheets; Step 2: Weld the connection between the welded pipe (1) and the tube sheet from the top and bottom respectively, and polish the welded part flat; Step 3: Open a threaded groove in the recess of the stacked tube sheet (12) for the second hollow bolt (30) to pass through. Place the stacked tube sheet (12) into the housing, and insert the first hollow bolt (20) and the second hollow bolt (30) through the reserved holes and the threaded groove respectively, so that the first hollow bolt (20) and the second hollow bolt (30) are inserted into the welded tube (1). Step 4: Rotate the first hollow bolt (20) to thread it with the welded tube (1), press the stacked tube sheet (12) tightly against the top of the second tube sheet, then rotate the second hollow bolt (30) to raise the recess of the stacked tube sheet (12) to a suitable height, and adjust the third tube sheet to a horizontal state. Step 5: Repeat Step 4 to Step 6. Through the opened threaded holes (200), the first hollow bolts (20) and the second hollow bolts (30) can be connected up and down. Thus, while installing the remaining stacked tube sheets (12) into the housing, adjust the position of the top concave assembly (3) according to the shape of the stacked tube sheet (12), and then pass multiple through-pieces through multiple first hollow bolts (20), multiple second hollow bolts (30) and multiple welded parts and fix them to complete the assembly.

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