U-shaped tube bundle quick connecting device

Abstract

The utility model belongs to the technical field of heat exchanger tube bundle installation, and particularly relates to a U-shaped tube bundle quick connecting device which comprises a kettle body, a tube box and a tube plate, a first flange end used for connection is installed on the side face of the kettle body, a second flange end used for connection is installed on the side face of the tube box, and the tube plate is installed between the first flange end and the second flange end. A plurality of U-shaped tube bundles are arranged and extend into the kettle body, a plurality of connecting rods are mounted on the tube plate, two ends of the connecting rods are threaded ends, and the connecting rods are used for connecting the tube plate with the first flange end and then the second flange end; the connecting rod with the two threaded ends at the two ends is adopted, the tube plate and the first flange end on the side face of the kettle body are installed and connected firstly, then the second flange end on the tube box is connected with the connecting rod, it is avoided that three flange plates and two gaskets are assembled at the same time, and the assembling convenience and efficiency are effectively improved; in addition, the assembly precision can be guaranteed, and the situation of leakage at the joint is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchanger tube bundle installation, and particularly relates to a quick connection device for U-shaped tube bundles. Background Art

[0002] In a tubular heat exchanger, it is usually necessary to install a U-shaped tube bundle on the side of the kettle body, and both ends of each U-shaped tube in the U-shaped tube bundle are fixed on the same tube sheet, so as to facilitate installation and layout. When installing the U-shaped tube bundle on the side of the kettle body, since the U-shaped tube bundle usually has a tube sheet by itself, it is necessary to assemble the flange end on the side of the kettle body, the tube sheet, and the flange end on the tube box at the same time during installation. Specifically, it is necessary to assemble three flange plates and two gaskets at the same time. Because the U-shaped tube bundle connected to the tube sheet is heavy and most of it extends into the kettle body, its center of gravity is unstable, which is difficult during the assembly process, with low assembly efficiency and difficult to guarantee the assembly accuracy, and thus needs to be improved. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a quick connection device for U-shaped tube bundles aiming at the above existing technical problems, achieving the effect of being able to quickly connect the U-shaped tube bundle and the tube box with the kettle body.

[0004] In view of this, the utility model provides a quick connection device for U-shaped tube bundles, including:

[0005] A kettle body, with a first flange end for connection installed on the side;

[0006] A tube box, with a second flange end for connection installed on the side;

[0007] A tube sheet, installed between the first flange end and the second flange end, and provided with a U-shaped tube bundle extending into the kettle body;

[0008] A plurality of connecting rods are installed on the tube sheet, and both ends are threaded ends and are both connected with nuts for locking, and are used for connecting the tube sheet with the first flange end first and then with the second flange end.

[0009] In the above technical solution, further, it further includes:

[0010] An annular protrusion is provided on the connecting rod and is located between the tube sheet and the second flange end.

[0011] In the above technical solution, further:

[0012] The number of connecting rods provided with annular protrusions is four, and they are evenly distributed in a circumferential manner;

[0013] Among them, the number of connecting rods is at least four.

[0014] In the above technical solution, further:

[0015] A plurality of mounting holes for a plurality of connecting rods to pass through are provided on both the first flange end and the second flange end;

[0016] Wherein, a stepped hole coaxial with the mounting hole is provided on one side of the tube sheet close to the second flange end, and the annular protrusion is built in the stepped hole.

[0017] In the above technical solution, further, it further includes:

[0018] Gaskets, which are respectively installed between the first flange end and the tube sheet and between the second flange end and the tube sheet.

[0019] In the above technical solution, further, it further includes:

[0020] A partition plate is installed in the tube box, and divides the inside of the tube box into a first chamber and a second chamber. An inlet end is provided on the first chamber, and an outlet end is provided on the second chamber;

[0021] Wherein, a slot adapted to the partition plate is provided on the tube sheet.

[0022] In the above technical solution, further, it further includes:

[0023] A support plate is installed in the kettle body and is used to support the U-shaped tube bundle;

[0024] A pull rod, one end of which is connected to the tube sheet and the other end is installed on the support plate.

[0025] The beneficial effects of the present utility model are:

[0026] 1. By adopting connecting rods with threaded ends at both ends, and first installing and connecting the tube sheet with the first flange end on the side of the kettle body, and then connecting the second flange end on the tube box with the connecting rod, it avoids assembling three flange plates and two gaskets at the same time, effectively improving the convenience and efficiency of assembly, and can ensure the assembly accuracy and avoid leakage at the connection.

[0027] 2. By adopting the structure of setting an annular protrusion on the connecting rod, when connecting the tube sheet with the first flange end on the side of the kettle body first, the annular protrusion is used as the head of the mounting bolt, and the threaded end on one side of the connecting rod is connected with the nut, so as to connect and fix the tube sheet and the first flange end. Then, by using this nut as the head of the mounting bolt, the threaded end on the other side of the connecting rod is connected with another nut, so as to connect and fix the second flange end and the tube sheet, and the three flange plates and two gaskets are assembled step by step, effectively improving the convenience and efficiency of assembly and ensuring the assembly accuracy.

[0028] 3. By embedding the annular protrusions, the connection between the second flange end and the tube sheet is not affected. At the same time, annular protrusions are not provided on all the connecting rods. That is, annular protrusions are only provided on four of the connecting rods. The tube sheet and the first flange end are preliminarily connected by these four connecting rods to avoid the situation of unstable center of gravity caused by the overweight of the U-shaped tube bundle. After the second flange end is installed, all the connecting rods are installed to complete the assembly. After the assembly is completed, it is fixed by the threaded ends at both ends of the connecting rod and two nuts, which can avoid the situation that the connection strength is affected due to the low structural strength of the annular protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present utility model;

[0030] Figure 2 is a side view of the present utility model;

[0031] Figure 3 is the present utility model Figure 2 a cross-sectional view taken along line A-A in;

[0032] Figure 4 is the present utility model Figure 3 an enlarged view of part B in;

[0033] The reference numerals in the drawings are shown as: 1, kettle body; 2, first flange end; 3, tube box; 4, second flange end; 5, tube sheet; 6, U-shaped tube bundle; 7, connecting rod; 8, threaded end; 9, annular protrusion; 10, mounting hole; 11, stepped hole; 12, gasket; 13, partition board; 14, first chamber; 15, second chamber; 16, inlet end; 17, outlet end; 18, clamping groove; 19, support plate; 20, pull rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0035] Embodiment 1:

[0036] This embodiment provides a quick connection device for a U-shaped tube bundle, including:

[0037] A kettle body 1 with a first flange end 2 for connection installed on the side;

[0038] A tube box 3 with a second flange end 4 for connection installed on the side;

[0039] The tube sheet 5 is installed between the first flange end 2 and the second flange end 4, and is provided with a U-shaped tube bundle 6 extending into the kettle body 1;

[0040] The connecting rods 7, a plurality of which are installed on the tube sheet 5, and both ends are threaded ends 8, and are both connected with nuts for locking, and are used for connecting the tube sheet 5 with the first flange end 2 first and then with the second flange end 4.

[0041] As can be seen from this embodiment, by adopting the connecting rod 7 with threaded ends 8 at both ends, and first installing and connecting the tube sheet 5 with the first flange end 2 on the side of the kettle body 1, and then connecting the second flange end 4 on the tube box 3 with the connecting rod 7, it is possible to avoid assembling the three flange plates and the two gaskets 12 at the same time, effectively improving the convenience and efficiency of assembly, and being able to ensure the assembly accuracy and avoid leakage at the connection.

[0042] Embodiment 2:

[0043] This embodiment provides a quick connection device for a U-shaped tube bundle. In addition to including the technical solutions of the above embodiment, it also has the following technical features, and further includes:

[0044] The annular protrusion 9 is arranged on the connecting rod 7 and is located between the tube sheet 5 and the second flange end 4;

[0045] Among them, the annular protrusion 9 and the connecting rod 7 can adopt an integral structure.

[0046] As can be seen from this embodiment, by adopting the structure of arranging the annular protrusion 9 on the connecting rod 7, when connecting the tube sheet 5 with the first flange end 2 on the side of the kettle body 1 first, the annular protrusion 9 is used as the head of the mounting bolt, and is connected with the nut through the threaded end 8 on one side of the connecting rod 7, so as to connect and fix the tube sheet 5 and the first flange end 2. Then, by using this nut as the head of the mounting bolt and connecting with another nut through the threaded end 8 on the other side of the connecting rod 7, the second flange end 4 and the tube sheet 5 are connected and fixed. The three flange plates and the two gaskets 12 are assembled step by step, effectively improving the convenience and efficiency of assembly and ensuring the assembly accuracy;

[0047] At the same time, by using the abutment between the annular protrusion 9 and the tube sheet 5 for installation, it is possible to avoid the fixed connection between the connecting rod 7 and the tube sheet 5. That is, after the assembly is completed, the threaded ends 8 at both ends of the connecting rod 7 and the nuts threadedly connected with the threaded ends 8 are still relied on for locking, so as to avoid affecting the sealing effect between the first flange end 2 and the tube sheet 5.

[0048] Embodiment 3:

[0049] This embodiment provides a quick connection device for a U-shaped tube bundle. In addition to including the technical solutions of the above embodiment, it also has the following technical features:

[0050] There are four connecting rods 7 provided with annular protrusions 9, and they are evenly distributed at equal intervals in the circumferential direction;

[0051] Among them, the number of connecting rods 7 is at least four;

[0052] At the same time, for the connecting rods 7 without annular protrusions 9, in addition to adopting the design of threaded ends 8 at both ends, a conventional bolt structure can also be adopted.

[0053] It can be seen from this embodiment that annular protrusions 9 are not provided on all the connecting rods 7. That is, only four of the connecting rods 7 are provided with annular protrusions 9. Through these four connecting rods 7, the tube sheet 5 and the first flange end 2 are preliminarily connected to avoid the situation of unstable center of gravity caused by the overweight of the U-shaped tube bundle 6. After installation through the second flange end 4, all the connecting rods 7 are installed, and thus the assembly is completed. After the assembly is completed, it is fixed by the threaded ends 8 at both ends of the connecting rod 7 and two nuts, which can avoid the situation that the connection strength is affected due to the low structural strength of the annular protrusion 9;

[0054] Moreover, it can reduce the customized quantity of the annular protrusions 9 on the connecting rods 7, thereby reducing the manufacturing cost, and the setting of the annular protrusions 9 only needs to meet the requirement of aligning the tube sheet 5 and the first flange end 2 to eliminate the situation of difficult synchronous assembly caused by the overweight of the U-shaped tube bundle 6.

[0055] Embodiment 4:

[0056] This embodiment provides a U-shaped tube bundle quick connection device. In addition to including the technical solutions of the above embodiment, it also has the following technical features:

[0057] A plurality of mounting holes 10 for a plurality of connecting rods 7 to pass through are provided on both the first flange end 2 and the second flange end 4;

[0058] Among them, a stepped hole 11 coaxial with the mounting hole 10 is provided on the surface of the tube sheet 5 close to the second flange end 4, and the annular protrusion 9 is built in the stepped hole 11;

[0059] At the same time, the depth dimension of the hole wall in the stepped hole 11 adapted to the annular protrusion 9 is greater than the thickness dimension of the annular protrusion 9 along its axial direction, ensuring that the annular protrusion 9 does not protrude from the surface of the tube sheet 5.

[0060] It can be seen from this embodiment that by embedding the annular protrusion 9, the connection between the second flange end 4 and the tube sheet 5 is prevented from being affected, thereby affecting the sealed connection between the second flange end 4 and the tube sheet 5, and ensuring the sealing performance between the second flange end 4 and the tube sheet 5.

[0061] Embodiment 5:

[0062] This embodiment provides a quick connection device for U-shaped tube bundles. In addition to including the technical solutions of the above embodiments, it also has the following technical features, and further includes:

[0063] Gaskets 12 are respectively installed between the first flange end 2 and the tube sheet 5, and between the second flange end 4 and the tube sheet 5.

[0064] As can be seen from this embodiment, through the setting of the gaskets 12, the sealing performance between the first flange end 2 and the tube sheet 5, and between the second flange end 4 and the tube sheet 5 is ensured. And by using the above-mentioned connecting rod 7, the threaded ends 8 at both ends of the connecting rod 7, and the nuts connected to the threaded ends 8, the gaskets 12 can be installed conveniently, ensuring the installation accuracy and sealing performance.

[0065] Embodiment 6:

[0066] This embodiment provides a quick connection device for U-shaped tube bundles. In addition to including the technical solutions of the above embodiments, it also has the following technical features, and further includes:

[0067] A partition plate 13 is installed in the tube box 3, and divides the inside of the tube box 3 into a first chamber 14 and a second chamber 15. An inlet end 16 is provided on the first chamber 14, and an outlet end 17 is provided on the second chamber 15;

[0068] Wherein, a slot 18 adapted to the partition plate 13 is provided on the tube sheet 5.

[0069] As can be seen from this embodiment, the setting of the partition plate 13 facilitates the introduction of the fluid medium into the U-shaped tube bundle 6, ensuring the heat exchange effect. And by providing the slot 18 on the tube sheet 5, the installation strength of the partition plate 13 and the installation accuracy of the tube box 3 can be improved, ensuring the assembly effect.

[0070] Embodiment 7:

[0071] This embodiment provides a quick connection device for U-shaped tube bundles. In addition to including the technical solutions of the above embodiments, it also has the following technical features, and further includes:

[0072] A support plate 19 is installed in the kettle body 1 and is used to support the U-shaped tube bundle 6;

[0073] A pull rod 20 has one end connected to the tube sheet 5 and the other end installed on the support plate 19.

[0074] As can be seen from this embodiment, through the setting of the support plate 19 and the pull rod 20, the installation stability of the U-shaped tube bundle 6 is ensured, avoiding affecting the connection between the tube bundle and the first flange end 2.

[0075] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A quick connection device for U-shaped tube bundles, characterized in that, Comprising: A kettle body (1) with a first flange end (2) for connection installed on the side; A tube sheet (3) with a second flange end (4) for connection installed on the side; A tube plate (5) installed between the first flange end (2) and the second flange end (4), and provided with a U-shaped tube bundle (6) extending into the kettle body (1); A connecting rod (7), a plurality of which are installed on the tube plate (5), and both ends are threaded ends (8), and are both connected with nuts for locking, and are used for connecting the tube plate (5) to the first flange end (2) first and then to the second flange end (4).

2. The quick connection device for U-shaped tube bundles according to claim 1, characterized in that, It further comprises: An annular protrusion (9) provided on the connecting rod (7) and located between the tube plate (5) and the second flange end (4).

3. The U-shaped tube bundle quick connection device according to claim 2, characterized in that: The number of connecting rods (7) provided with annular protrusions (9) is four, and they are evenly distributed at equal intervals in the circumferential direction; Among them, the number of the connecting rods (7) is at least four.

4. The U-shaped tube bundle quick connection device according to claim 2, characterized in that: A plurality of mounting holes (10) for a plurality of connecting rods (7) to pass through are respectively opened on the first flange end (2) and the second flange end (4); Among them, a stepped hole (11) coaxial with the mounting hole (10) is opened on the side of the tube plate (5) close to the second flange end (4), and the annular protrusion (9) is built in the stepped hole (11).

5. The quick connection device for U-shaped tube bundles according to claim 1, characterized in that, It further comprises: Gaskets (12) respectively installed between the first flange end (2) and the tube plate (5) and between the second flange end (4) and the tube plate (5).

6. The U-shaped tube bundle quick connection device according to claim 1, characterized in that, It further comprises: A partition plate (13) installed in the tube box (3), and the tube box (3) is divided into a first chamber (14) and a second chamber (15), and an inlet end (16) is opened on the first chamber (14), and an outlet end (17) is opened on the second chamber (15); Among them, a slot (18) adapted to the partition plate (13) is opened on the tube plate (5).

7. The quick connection device for U-shaped tube bundles according to claim 1, characterized in that, It further comprises: A support plate (19) installed in the kettle body (1) and used for supporting the U-shaped tube bundle (6); A pull rod (20) with one end connected to the tube plate (5) and the other end installed on the support plate (19).

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