Floating head type heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a floating head type heat exchanger which comprises a shell pass, a front-end floating head and a rear-end floating head, an inner floating head and a floating head tube plate are arranged in the rear-end floating head, and the floating head tube plate is connected with the inner floating head through a locking assembly; the locking assembly comprises a fixing ring and a locking screw rod, the side, close to the inner wall of the shell side, of the fixing ring is connected with the locking screw rod, and the locking screw rod is fixed to the shell side through a nut; a first sealing ring is arranged on one side, close to the inner wall of the shell pass, of the fixing ring; a groove is formed in the side, deviating from the inner wall of the shell pass, of the fixing ring, the floating head flange is fixed to the inner floating head and connected with the floating head tube plate through a stud, the two ends of the stud are fastened through locking nuts, and disc springs are arranged between the floating head flange and the corresponding locking nuts and between the floating head tube plate and the corresponding locking nuts. And a steam inlet pipe with a regulating valve is arranged at the top of the shell side. The sealing device is good in sealing performance and capable of effectively preventing medium leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a floating head type heat exchanger. Background Art

[0002] The floating head heat exchanger is a heat exchange equipment widely used in the industrial field. It consists of multiple parts, including shell, tube bundle, pipe, filler, etc. Its main function is to exchange heat between two different media at different temperatures and pressures. Due to the process design, the flange and gasket of the heater floating head of the regeneration dryer are seriously impacted by steam, and the floating head steam leaks seriously. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and proposes a floating head type heat exchanger which can improve the sealing performance of the floating head.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A floating head type heat exchanger comprises a shell side and a front floating head and a rear floating head connected to both ends of the shell side; an inner floating head and a floating head tube sheet are arranged inside the rear floating head, and the floating head tube sheet is connected to the inner floating head through a locking assembly; the locking assembly comprises a fixing ring and a locking screw, and the fixing ring is connected to the locking screw on the side close to the inner wall of the shell side, and the locking screw is fixed to the shell side through a nut; a first sealing ring is also arranged on the side close to the inner wall of the shell side to improve the sealing performance of the fixing ring close to the inner wall of the shell side; a groove is arranged on the side of the fixing ring away from the inner wall of the shell side for accommodating The inner floating head tube sheet and the floating head flange are provided, and the floating head flange is fixed on the inner floating head. The floating head flange is connected to the floating head tube sheet by stud bolts, and both ends of the stud bolts are fastened by locking nuts. Disc springs are provided between the floating head flange and the corresponding locking nuts, and between the floating head tube sheet and the corresponding locking nuts. When the temperature of the stud bolts changes greatly due to heating, the fastening of the floating head flange can still be ensured, thereby improving the sealing performance. A steam inlet pipe with a regulating valve is provided on the top of the shell side, and the steam can be slowly passed into the heat exchanger through the control of the regulating valve, thereby reducing the impact of steam on the heat exchanger.

[0006] Furthermore, an elastic member is provided between the first sealing ring and the fixing ring to further improve the sealing performance between the fixing ring and the inner wall of the shell.

[0007] Furthermore, a second sealing ring is provided between the floating head tube sheet and the floating head flange.

[0008] Furthermore, a positioning plate is provided at the end of the floating head tube sheet, and a positioning groove matching the positioning plate is provided in the groove in the fixing ring, so as to facilitate the installation of the floating head tube sheet.

[0009] Furthermore, the fixing ring is threadably connected to the locking screw, which facilitates installation.

[0010] Furthermore, two first sealing rings are provided, which are respectively located on the left and right sides of the locking screw.

[0011] Furthermore, a discharge port is arranged at the top of the front floating head, and a feed port is arranged at the bottom.

[0012] Furthermore, a steam outlet pipe is provided at the bottom of the shell side.

[0013] Furthermore, a vent is provided at the top of the shell side.

[0014] Furthermore, the front floating head and the rear floating head are connected to the shell side via flanges.

[0015] Technical effects of the utility model:

[0016] Compared with the prior art, the utility model has a floating head heat exchanger with good sealing performance, which can effectively prevent medium leakage and ensure the normal operation of the equipment. In addition, the design structure of the heat exchanger locking assembly is compact, which is easy to install, maintain and overhaul, and can also improve the sealing performance of the floating head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structural principle of the floating head heat exchanger of the utility model;

[0018] Figure 2 For this utility model Figure 1 A-section structure enlarged view.

[0019] In the figure, 1, shell side; 2, front end floating head; 3, rear end floating head; 4, inner floating head; 5, floating head tube sheet; 6, fixing ring; 7, locking screw; 8, first sealing ring; 9, floating head flange; 10, stud bolt; 11, locking nut; 12, disc spring; 13, steam inlet pipe; 14, regulating valve; 15, elastic part; 16, second sealing ring; 17, positioning plate; 18, discharge port; 19, feed port; 20, flange; 21, steam outlet pipe; 22, vent. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is clearly and completely described below in conjunction with the accompanying drawings of the specification.

[0021] Embodiment 1:

[0022] like Figure 1 and 2As shown, a floating head type heat exchanger involved in this embodiment includes a shell side 1, a front floating head 2, a rear floating head 3, an inner floating head 4, a floating head tube sheet 5 and a locking assembly. The front floating head 2 and the rear floating head 3 are respectively connected to the two ends of the shell side 1 through flanges 20; the inner floating head 4 and the floating head tube sheet 5 are arranged inside the rear floating head 3, and the floating head tube sheet 5 is connected to the inner floating head 4 through a locking assembly.

[0023] The bottom of the shell side 1 is provided with a steam outlet pipe 21, and the top is provided with a venting port 22. The top of the front floating head 2 is provided with a discharge port 18, and the bottom is provided with a feed port 19.

[0024] The locking assembly includes a fixing ring 6 and a locking screw 7. The fixing ring 6 is threadedly connected to the locking screw 7 on one side close to the inner wall of the shell side 1. The locking screw 7 is fixed to the shell side 1 through a nut.

[0025] Two first sealing rings 8 are also provided on the side of the fixing ring 6 close to the inner wall of the shell side 1. The two first sealing rings 8 are respectively located on the left and right sides of the locking screw 7. An elastic member 15 is provided between the first sealing ring 8 and the fixing ring 6. Under the action of the elastic member 15, the first sealing ring 8 can further improve the sealing between the fixing ring 6 and the inner wall of the shell side 1; a groove is provided on the side of the fixing ring 6 away from the inner wall of the shell side 1 for accommodating the floating head tube sheet 5 and the floating head flange 9.

[0026] The floating head flange 9 is fixed on the inner floating head 4, and the floating head flange 9 is connected to the floating head tube sheet 5 by stud bolts 10, and both ends of the stud bolts 10 are fastened by locking nuts 11. Disc springs 12 are provided between the floating head flange 9 and the corresponding locking nuts 11, and between the floating head tube sheet 5 and the corresponding locking nuts 11. When the temperature of the stud bolts 10 changes greatly due to heat, the fastening of the floating head flange 9 can still be ensured, thereby improving the sealing performance. A second sealing ring 16 is provided between the floating head tube sheet 5 and the floating head flange 9. Preferably, a positioning plate 17 is provided at the end of the floating head tube sheet 5, and a positioning groove matching the positioning plate 17 is provided in the groove in the fixing ring 6, so as to facilitate the installation of the floating head tube sheet 5.

[0027] A steam inlet pipe 13 is provided at the top of the shell side 1, and a regulating valve 14 is provided on the steam inlet pipe 13. The regulating valve 14 can be controlled to allow steam to slowly enter the heat exchanger to reduce the impact of steam on the heat exchanger.

[0028] The utility model heat exchanger has good sealing performance, can effectively prevent medium leakage, and ensure the normal operation of the equipment. In addition, the locking component structure of the heat exchanger is compactly designed, making installation, maintenance and repair simple and convenient, and also helps to improve the sealing performance of the floating head.

[0029] The above-mentioned specific implementation methods are only specific cases of the present utility model. The patent protection scope of the present utility model includes but is not limited to the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present utility model shall fall within the patent protection scope of the present utility model.

Claims

1. A floating head heat exchanger, characterized in that: The invention comprises a shell side (1) and a front floating head (2) and a rear floating head (3) connected to both ends of the shell side (1); an inner floating head (4) and a floating head tube sheet (5) are arranged inside the rear floating head (3); the floating head tube sheet (5) and the inner floating head (4) are connected via a locking assembly; the locking assembly comprises a fixing ring (6) and a locking screw (7); the fixing ring (6) is connected to the locking screw (7) on one side close to the inner wall of the shell side (1); the locking screw (7) is fixed to the shell side (1) via a nut; the fixing ring (6) is also provided with a first sealing ring (8) on one side close to the inner wall of the shell side (1); the fixing ring (6) is 6) A groove is provided on the side away from the inner wall of the shell side (1) for accommodating a floating head tube sheet (5) and a floating head flange (9); the floating head flange (9) is fixed on the inner floating head (4); the floating head flange (9) and the floating head tube sheet (5) are connected by stud bolts (10); both ends of the stud bolts (10) are fastened by locking nuts (11); disc springs (12) are provided between the floating head flange (9) and the corresponding locking nuts (11), and between the floating head tube sheet (5) and the corresponding locking nuts (11); a steam inlet pipe (13) with a regulating valve (14) is provided at the top of the shell side (1).

2. The floating head heat exchanger according to claim 1, characterized in that: An elastic member (15) is provided between the first sealing ring (8) and the fixing ring (6).

3. The floating head heat exchanger according to claim 1, characterized in that: A second sealing ring (16) is provided between the floating head tube sheet (5) and the floating head flange (9).

4. The floating head heat exchanger according to claim 1, characterized in that: A positioning plate (17) is provided at the end of the floating head tube plate (5), and a positioning groove matching the positioning plate (17) is provided in the groove in the fixing ring (6).

5. The floating head heat exchanger according to claim 1, characterized in that: The fixing ring (6) is threadedly connected to the locking screw (7).

6. The floating head heat exchanger according to claim 1, characterized in that: Two first sealing rings (8) are provided, respectively located on the left and right sides of the locking screw (7).

7. The floating head heat exchanger according to claim 1, characterized in that: The top of the front floating head (2) is provided with a discharge port (18), and the bottom is provided with a feed port (19).

8. The floating head heat exchanger according to claim 1, characterized in that: A steam outlet pipe (21) is provided at the bottom of the shell side (1).

9. The floating head heat exchanger according to any one of claims 1 to 8, characterized in that: A vent (22) is provided at the top of the shell side (1).

10. The floating head heat exchanger according to claim 9, characterized in that: The front floating head (2) and the rear floating head (3) are connected to the shell side (1) via flanges (20).

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