Tube pass inlet pipe connecting flange

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a tube pass inlet connecting pipe flange which comprises a first connecting pipe, a first flange arranged at the end of the first connecting pipe, a second connecting pipe and a second flange arranged at the end of the second connecting pipe. According to the utility model, the plurality of groups of insertion blocks are inserted into the insertion holes and the through grooves which are aligned with each other, so that the innermost ends of the insertion blocks are kept to be inserted into the through grooves under the magnetic attraction action generated by the first magnetic blocks and the second magnetic blocks and are not easy to separate out, and at the moment, the insertion blocks can limit the axial displacement between the first flange and the second flange; the connecting stability between the first flange and the second flange is improved, in the using process, even if part of nuts for connecting the first flange and the second flange are loosened, under the limiting effect of the multiple sets of inserting blocks, gaps cannot be generated at the connecting position between the first flange and the second flange due to loosening of part of the positions, and therefore the using effect is improved. Therefore, the medium passing through the second connecting pipe and the first connecting pipe is prevented from leaking.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a pipe inlet pipe flange. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. It plays an important role in chemical, petroleum, power, food and many other industrial productions.

[0003] The existing heat exchanger pipe inlet pipe is connected by two sets of matching flanges, and the two sets of flanges are fastened by bolts and nuts passing through the flange holes. When the heat exchanger is in use, it is easy to generate a certain vibration when the medium passes through. Therefore, some nuts that play a fastening role are easy to loosen under the action of vibration. At this time, a gap will be generated at the connection between the two sets of flanges, which will lead to leakage of the medium. Utility Model Content

[0004] The utility model provides a pipe inlet pipe flange, which solves the technical problem in the prior art that a gap is generated at the connection of two groups of flanges, thereby causing leakage of the medium.

[0005] In view of the above problems, the technical solution proposed by the utility model is:

[0006] A pipe inlet pipe flange comprises a first pipe, a first flange arranged at the end of the first pipe, a second pipe and a second flange arranged at the end of the second pipe, the first flange is provided with an annular groove, the second flange is fixedly provided with a convex ring which can extend into the interior of the annular groove, the side wall of the first flange is provided with a plurality of groups of through grooves connected to the interior of the annular groove, the side wall of the convex ring is provided with a plurality of groups of insertion holes corresponding to the through grooves, the pipe flange also comprises a plurality of groups of plug blocks for inserting into the through grooves and the insertion holes, the innermost side of the insertion hole is provided with a first magnetic block, and the innermost end of the plug block is provided with a second magnetic block with a magnetic pole opposite to that of the first magnetic block.

[0007] Furthermore, the through slot, the insertion hole and the side edges of the insertion block are all rounded structures, and the outermost end of the insertion block is fixedly connected with a handle.

[0008] Furthermore, surfaces of the first flange and the second flange are provided with mutually matching alignment lines.

[0009] Furthermore, a mounting groove is formed on one side of the first flange and the other side of the second flange that are opposite to each other, and a sealing gasket is embedded in the mounting groove.

[0010] Furthermore, a pull tab is fixedly connected to the sealing gasket.

[0011] Furthermore, reinforcing ribs are provided between the first connecting pipe and the first flange, and between the second connecting pipe and the second flange. The reinforcing ribs are welded in multiple groups between the first connecting pipe and the first flange, and between the second connecting pipe and the second flange.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: By inserting several groups of insertion blocks into the aligned jacks and through grooves, the innermost ends of the insertion blocks can be kept inserted into the through grooves under the magnetic attraction of the first magnetic block and the second magnetic block and are not easily detached. At this time, the insertion blocks can limit the axial displacement between the first flange and the second flange, improving the stability of the connection between the first flange and the second flange. During use, even if some nuts connecting the first flange and the second flange become loose, under the limiting action of several groups of insertion blocks, there will be no gap at the connection between the first flange and the second flange due to partial loosening, thereby avoiding the leakage of the medium passing through the second connecting pipe and the first connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram when the first flange and the second flange of the present utility model are butted;

[0016] Figure 3 is a structural schematic diagram of the first flange and the annular groove of the present utility model;

[0017] Figure 4 is a structural schematic diagram of the second flange and the convex ring of the present utility model;

[0018] Figure 5 is a sectional structural schematic diagram of the convex ring of the present utility model;

[0019] Figure 6 is a structural schematic diagram of the insertion block and the second magnetic block of the present utility model.

[0020] In the figure: 1. First connecting pipe; 2. First flange; 3. Second connecting pipe; 4. Second flange; 5. Annular groove; 6. Convex ring; 7. Through groove; 8. Jack; 9. Plug; 10. First magnet; 11. Second magnet; 12. Handle; 13. Alignment line; 14. Mounting groove; 15. Sealing washer; 16. Pull tab; 17. Reinforcing rib. Detailed implementation mode

[0021] To make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-6 , a tube-side inlet connecting pipe flange, comprising a first connecting pipe 1, a first flange 2 provided at the end of the first connecting pipe 1, further comprising a second connecting pipe 3 and a second flange 4 provided at the end of the second connecting pipe 3. An annular groove 5 is formed on the first flange 2, and a convex ring 6 is fixedly provided on the second flange 4. When the first flange 2 and the second flange 4 are butted together, the convex ring 6 can extend into the inside of the annular groove 5. A plurality of groups of through grooves 7 communicating with the inside of the annular groove 5 are formed on the side wall of the first flange 2, and a plurality of groups of jacks 8 corresponding to the through grooves 7 are formed on the side wall of the convex ring 6. After the convex ring 6 extends into the inside of the annular groove 5, a plurality of groups of through grooves 7 and jacks 8 can be aligned with each other. The connecting pipe flange further comprises a plurality of groups of plugs 9 for inserting into the inside of the through grooves 7 and jacks 8. A first magnet 10 is arranged at the innermost side of the jack 8, and a second magnet 11 with a magnetic pole opposite to that of the first magnet 10 is arranged at the innermost end of the plug 9. When the innermost end of the plug 9 is inserted into the innermost side of the through groove 7, the first magnet 10 and the second magnet 11 will approach each other and generate a magnetic attraction effect. At this time, the innermost end of the plug 9 can be kept inserted into the inside of the through groove 7 under the magnetic attraction effect and is not easily separated.

[0024] During use, the first flange 2 and the second flange 4 are butted together. The convex ring 6 at the end of the second flange 4 will extend into the internal annular groove 5 at the end of the first flange 2. Then, several groups of through grooves 7 on the side wall of the convex ring 6 are aligned with several groups of jacks 8 on the side wall of the second flange 4. At this time, the flange holes around the first flange 2 and the second flange 4 will also be aligned with each other. By using bolts to pass through the flange holes around the first flange 2 and the second flange 4 and using nuts to tighten and fix both ends, the first flange 2 and the second flange 4 can be connected together. At this time, the user can insert several groups of plug blocks 9 into the jacks 8 respectively. The innermost end of the plug block 9 will pass through the jack 8 and extend into the internal through groove 7. The second magnet block 11 at the innermost end of the plug block 9 will approach the first magnet block 10 inside the through groove 7. The innermost end of the plug block 9 can be kept inserted inside the through groove 7 under the magnetic attraction and is not easily separated. Since the plug block 9 is inserted into both the first flange 2 and the second flange 4 at the same time, the plug block 9 can limit the axial displacement between the first flange 2 and the second flange 4, improving the connection stability between the first flange 2 and the second flange 4. During use, even if some of the nuts connecting the first flange 2 and the second flange 4 become loose, there will be no gap at the connection between the first flange 2 and the second flange 4 due to partial loosening, and the first flange 2 and the second flange 4 will not become loose, thus avoiding the leakage of the medium passing through the second pipe 3 and the first pipe 1. In addition, during the disassembly process, the user only needs to overcome the magnetic attraction between the second magnet block 11 and the first magnet block 10 to pull out the plug block 9 from the inside of the through groove 7 and the jack 8, and then disassemble the bolts and nuts around the first flange 2 and the second flange 4, so that the first flange 2 and the second flange 4 can be separated.

[0025] Further, please refer to Figure 3 , Figure 4 and Figure 6 , the sides of the through groove 7, the jack 8 and the plug block 9 are all rounded corner structures. During the process of inserting and pulling out the plug block 9, the frictional resistance generated between the side wall of the plug block 9 and the side walls of the through groove 7 and the jack 8 due to the rounded corner structure is small, which is convenient for people to insert and pull out. A handle 12 is fixedly connected to the outermost end of the plug block 9 for people to grasp, so that the plug block 9 can be conveniently pulled out from the inside of the through groove 7 and the jack 8.

[0026] Further, please refer to Figures 1-2 , the surfaces of the first flange 2 and the second flange 4 are provided with mutually cooperating alignment lines 13. When the first flange 2 and the second flange 4 are butted together, the alignment lines 13 on the surfaces of the first flange 2 and the second flange 4 are aligned with each other. At this time, several groups of through grooves 7 on the side wall of the convex ring 6 are exactly aligned with several groups of jacks 8 on the side wall of the second flange 4, which is convenient for people to quickly and accurately align the through groove 7 and the jack 8.

[0027] Further, please refer toFigure 3 and Figure 4 On one side of the first flange 2 and the second flange 4 facing each other, mounting grooves 14 are provided. A sealing washer 15 is embedded inside the mounting groove 14. When the first flange 2 and the second flange 4 are connected, the sealing washers 15 on the contact surfaces of the first flange 2 and the second flange 4 will be closely attached together, further improving the sealing performance at the joint between the first flange 2 and the second flange 4.

[0028] Furthermore, please refer to Figure 3 and Figure 4 . A tab 16 is fixedly connected to the sealing washer 15. The tab 16 can be grasped by the user, so that the sealing washer 15 embedded inside the mounting groove 14 can be conveniently taken out, and it is convenient to replace the sealing washer 15 when it ages.

[0029] Furthermore, please refer to Figure 1 and Figure 2 . Reinforcing ribs 17 are provided between the first nozzle 1 and the first flange 2, and between the second nozzle 3 and the second flange 4. The reinforcing ribs 17 are welded in multiple groups between the first nozzle 1 and the first flange 2, and between the second nozzle 3 and the second flange 4. Since the connection between the first nozzle 1 and the first flange 2, and between the second nozzle 3 and the second flange 4 is usually in a single-sided welding manner, the firmness of the connection is poor. The reinforcing ribs 17 can provide a strengthening connection between the first nozzle 1 and the first flange 2, and between the second nozzle 3 and the second flange 4, and to a certain extent prevent the first nozzle 1 and the first flange 2, and the second nozzle 3 and the second flange 4 from breaking under the action of external forces due to poor welding.

[0030] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tube-side inlet nozzle flange, comprising a first nozzle (1), a first flange (2) provided at the end of the first nozzle (1), further comprising a second nozzle (3) and a second flange (4) provided at the end of the second nozzle (3), characterized in that, An annular groove (5) is formed on the first flange (2), a convex ring (6) that can extend into the interior of the annular groove (5) is fixedly arranged on the second flange (4), a plurality of groups of through grooves (7) communicating with the interior of the annular groove (5) are formed on the side wall of the first flange (2), a plurality of groups of insertion holes (8) corresponding to the through grooves (7) are formed on the side wall of the convex ring (6), the pipe connection flange further includes a plurality of groups of insertion blocks (9) for inserting into the through grooves (7) and the insertion holes (8), a first magnet (10) is arranged at the innermost side of the insertion hole (8), and a second magnet (11) with a magnetic pole opposite to that of the first magnet (10) is arranged at the innermost end of the insertion block (9).

2. The tube side inlet nozzle flange according to claim 1, wherein The sides of the through groove (7), the insertion hole (8) and the insertion block (9) are all rounded structures, and a handle (12) is fixedly connected to the outermost end of the insertion block (9).

3. The tube-side inlet nozzle flange according to claim 1, wherein Alignment lines (13) that cooperate with each other are arranged on the surfaces of the first flange (2) and the second flange (4).

4. The tube side inlet nozzle flange according to claim 1, characterized in that, Mounting grooves (14) are formed on the opposite surfaces of the first flange (2) and the second flange (4), and a sealing gasket (15) is embedded in the interior of the mounting grooves (14).

5. The tube-side inlet nozzle flange according to claim 4, wherein, A pulling piece (16) is fixedly connected to the sealing gasket (15).

6. The tube-side inlet nozzle flange according to claim 1, characterized in that, Reinforcing ribs (17) are arranged between the first pipe (1) and the first flange (2) and between the second pipe (3) and the second flange (4), and multiple groups of the reinforcing ribs (17) are welded between the first pipe (1) and the first flange (2) and between the second pipe (3) and the second flange (4).

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