A sealed structure of a bundle-tube shell heat exchanger

Abstract

The utility model relates to heat exchanger technical field, and disclose a kind of bundle tube shell heat exchanger sealing structure of pipe bundle can be drawn, including cylinder and pipe bundle device, the left side of the cylinder is provided with head, the inner wall of the head is connected with partition, the pipe bundle device includes pipe bundle fixed plate, the right side of the pipe bundle fixed plate is connected with multiple groups of bundle tube, the right side of multiple groups of the bundle tube is connected with auxiliary plugboard, the left side of the bundle tube is connected with two groups of first nut, the inner wall of the cylinder is connected with limit stop, the right side of the auxiliary plugboard is arc-shaped arrangement, the left side of the limit stop is provided with recess that is matched with auxiliary plugboard, the new scheme is limited and angle fixed to pipe bundle fixed plate, bundle tube by the cooperation of slide groove block and guide block, avoid the self-rotating phenomenon of pipe bundle fixed plate, bundle tube during use, improve the stability of the device used.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically a sealing structure for a shell-and-tube heat exchanger with removable tube bundles. Background Technology

[0002] Shell-and-tube heat exchangers are core heat exchange equipment in industries such as chemical, petroleum, and power. Their reliability and ease of maintenance are of paramount importance. The removable tube bundle design is a key technology for improving the maintenance efficiency of heat exchangers. It allows the tube bundle to be removed from the shell for cleaning or maintenance without moving the shell pipes, which greatly saves downtime and maintenance costs.

[0003] In existing shell-and-tube heat exchangers, before tube bundle inspection, flushing, or eddy current testing of the heat exchange tubes, all fastening bolts must be loosened, and then the tube-side end caps must be disassembled and hoisted down. Under the influence of gravity, the tube bundle, tube sheet, and heat exchange tube bundle may fall or rotate, causing misalignment of the tube bundle, tube bundle gaskets, etc. During replacement, the heat exchange tube bundle may come into contact with and collide with the shell-side cylinder, which seriously affects the service life of the heat exchange tube bundle. To address this, we propose a sealing structure for a removable tube bundle shell-and-tube heat exchanger. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a sealing structure for a removable tube bundle shell-and-tube heat exchanger, which effectively solves the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a removable tube bundle shell-and-tube heat exchanger, comprising a cylinder and a tube bundle assembly. A head is provided on the left side of the cylinder, and a partition plate is connected to the inner wall of the head. The tube bundle assembly includes a tube bundle fixing plate, and multiple sets of bundled tubes are connected to the right side of the fixing plate. An auxiliary insert plate is connected to the right side of each bundled tube, and two sets of first nuts are connected to the left side of each bundled tube. A limiting plate is connected to the inner wall of the cylinder, and the right side of the auxiliary insert plate is arc-shaped. A groove matching the auxiliary insert plate is formed on the left side of the limiting plate, and two sets of second nuts are connected to the right side of each bundled tube.

[0006] Preferably, guide blocks are connected to both the upper and lower sides of the auxiliary insert plate, and sliding blocks are connected to both the upper and lower sides of the cylinder, with the sliding blocks having sliding grooves that match the guide blocks.

[0007] Preferably, the left side of the limiting plate is connected to multiple sets of springs, and the left side of the multiple sets of springs is connected to a barrier plate.

[0008] Preferably, a first connecting plate is connected to the outer side of the cylinder, a third connecting plate is connected to the outer side of the tube bundle fixing plate, and a second connecting plate is connected to the outer side of the end cap. The bodies of the first connecting plate, the third connecting plate, and the second connecting plate are all provided with mounting holes.

[0009] Preferably, multiple sets of guide rods are evenly connected to the left side of the barrier plate, and the right side of the guide rods penetrates the body of the limiting plate.

[0010] Preferably, a first rubber pad is connected to the right side of the end cap, a third rubber block is connected to the left side of the first connecting plate, and sleeves are connected to both sides of the third connecting plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up sliding blocks and guide blocks to cooperate, the tube bundle fixing plate and tube bundle are limited and the angle is fixed, so as to prevent the tube bundle fixing plate and tube bundle from rotating on their own during use and improve the stability of the device. 2. By setting an auxiliary insert plate, the bundle tube can be limited and positioned, which makes the bundle tube more stable during installation, reduces the possibility of the bundle tube tilting, reduces the possibility of the bundle tube colliding with the cylinder, and improves the stability of the device. 3. By setting up a first rubber pad, a sleeve, and a third rubber block to cooperate in sealing the gaps between the first connecting plate, the third connecting plate, and the second connecting plate, the stability of the device is improved. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram: Figure 1 This is a schematic diagram of the sealing structure of the removable tube bundle shell-and-tube heat exchanger of this utility model. Figure 2 This is a schematic diagram of the partition plate structure of this utility model; Figure 3 This is a schematic diagram of the slide block structure of this utility model; Figure 4 This is a schematic diagram of the cylindrical structure of this utility model; Figure 5 This is a schematic diagram of the tube bundle device of this utility model.

[0014] In the diagram: 100, cylinder; 101, first connecting plate; 102, third rubber block; 110, end cap; 111, partition plate; 112, first rubber pad; 120, sliding block; 130, second connecting plate; 200, tube bundle device; 210, tube bundle fixing plate; 211, third connecting plate; 212, sleeve; 220, bundle tube; 230, auxiliary insert plate; 231, guide block; 240, first nut; 250, limiting plate; 260, spring; 270, barrier plate; 271, guide rod; 280, second nut. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3A sealing structure for a removable tube bundle shell-and-tube heat exchanger includes a shell 100 and a tube bundle assembly 200. A head 110 is located on the left side of the shell 100, and a partition plate 111 is fixedly connected to the inner wall of the head 110. The tube bundle assembly 200 includes a tube bundle fixing plate 210. Multiple sets of bundled tubes 220 are inserted and connected to the right side of the tube bundle fixing plate 210. An auxiliary insert plate 230 is inserted and connected to the right side of the multiple sets of bundled tubes 220. Two sets of first nuts 240 are screwed to the left side of the bundled tubes 220. The shell 100... A limiting plate 250 is fixedly connected to the inner wall of the auxiliary insert plate 230. The right side of the auxiliary insert plate 230 is arc-shaped, and the left side of the limiting plate 250 has a groove that matches the auxiliary insert plate 230. Two sets of second nuts 280 are screwed to the right side of the bundle tube 220. During use, the bundle tube 220 is inserted into the auxiliary insert plate 230. Before insertion, one set of second nuts 280 is installed, and after insertion, another set of second nuts 280 is installed. Then, the auxiliary insert plate 230 is adjusted using the two sets of second nuts 280. The auxiliary insertion plate 230 is connected and fixed to the bundle tube 220. After multiple sets of bundle tubes 220 are connected to the auxiliary insertion plate 230, the multiple sets of bundle tubes 220 are connected to the right first nut 240, and then the multiple sets of bundle tubes 220 are connected to the left first nut 240. The bundle tubes 220 and the tube bundle fixing plate 210 are fixed and limited by the two sets of first nuts 240. During use, when the tube bundle fixing plate 210 and the bundle tubes 220 are rotated 90° to prepare for placement, the auxiliary insertion plate 230 is connected to the right first nut 240. The plate 230 first contacts the cylinder 100, and then the auxiliary plate 230 guides and adjusts the position under the limitation of the cylinder 100, driving the bundle tube 220 to move into the inside of the cylinder 100. By setting the auxiliary plate 230, the bundle tube 220 can be limited and positioned, thereby making the bundle tube 220 more stable during installation, reducing the possibility of the bundle tube 220 tilting, reducing the possibility of the bundle tube 220 colliding with the cylinder 100, and improving the stability of the device.

[0017] Guide blocks 231 are fixedly connected to both the upper and lower sides of the auxiliary insert plate 230, and sliding blocks 120 are fixedly connected to both the upper and lower sides of the cylinder 100. The sliding blocks 120 have sliding grooves that match the guide blocks 231. By setting the sliding blocks 120 and the guide blocks 231 to cooperate, the tube bundle fixing plate 210 and the bundle tube 220 are limited and their angles are fixed, so as to prevent the tube bundle fixing plate 210 and the bundle tube 220 from rotating on their own during use, thereby improving the stability of the device.

[0018] Multiple sets of springs 260 are fixedly connected to the left side of the limiting plate 250. A baffle plate 270 is fixedly connected to the left side of the multiple sets of springs 260. By setting the springs 260 and the baffle plate 270 to cooperate, the tube bundle device 200 is limited, thereby reducing the limitation of the tube bundle device 200 and other positions such as the cylinder 100, and improving the stability of the device. Multiple sets of guide rods 271 are evenly fixedly connected to the left side of the baffle plate 270. The right side of the guide rods 271 penetrates the body of the limiting plate 250. By setting the guide rods 271 to limit the baffle plate 270, the stability of the device is improved.

[0019] A first connecting plate 101 is connected to the outer side of the cylinder 100, a third connecting plate 211 is fixedly connected to the outer side of the tube bundle fixing plate 210, and a second connecting plate 130 is fixedly connected to the outer side of the end cap 110. The bodies of the first connecting plate 101, the third connecting plate 211, and the second connecting plate 130 are all provided with mounting holes. By setting the first connecting plate 101, the third connecting plate 211, and the second connecting plate 130, it is easy to quickly connect and disassemble the cylinder 100, the tube bundle fixing plate 210, and the end cap 110, thereby improving the convenience of using the device. A first rubber gasket 112 is fixedly connected to the right side of the end cap 110, a third rubber block 102 is fixedly connected to the left side of the first connecting plate 101, the third connecting plate 211, and the second connecting plate 130. By setting the first rubber gasket 112, the sleeve 212, and the third rubber block 102 to cooperate, the gaps between the first connecting plate 101, the third connecting plate 211, and the second connecting plate 130 are sealed, thereby improving the stability of the device.

Claims

1. A sealing structure for a removable tube bundle shell-and-tube heat exchanger, characterized in that: The device includes a cylindrical body (100) and a tube bundle device (200). A head (110) is provided on the left side of the cylindrical body (100), and a partition plate (111) is connected to the inner wall of the head (110). The tube bundle device (200) includes a tube bundle fixing plate (210). Multiple sets of bundle tubes (220) are connected to the right side of the tube bundle fixing plate (210). An auxiliary insert plate (230) is connected to the right side of the multiple sets of bundle tubes (220). Two sets of first nuts (240) are connected to the left side of the bundle tubes (220). A limiting plate (250) is connected to the inner wall of the cylindrical body (100). The right side of the auxiliary insert plate (230) is arc-shaped. A groove matching the auxiliary insert plate (230) is opened on the left side of the limiting plate (250). Two sets of second nuts (280) are connected to the right side of the bundle tubes (220).

2. The sealing structure of a removable tube bundle shell-and-tube heat exchanger according to claim 1, characterized in that: The auxiliary insert plate (230) is connected to guide blocks (231) on both the upper and lower sides, and the cylinder (100) is connected to sliding blocks (120) on both the upper and lower sides. The sliding blocks (120) are provided with sliding grooves that match the guide blocks (231).

3. The sealing structure of a removable tube bundle shell-and-tube heat exchanger according to claim 1, characterized in that: The left side of the limiting plate (250) is connected to multiple sets of springs (260), and the left side of the multiple sets of springs (260) is connected to a barrier plate (270).

4. The sealing structure of a removable tube bundle shell-and-tube heat exchanger according to claim 1, characterized in that: The outer side of the cylinder (100) is connected to a first connecting plate (101), the outer side of the tube bundle fixing plate (210) is connected to a third connecting plate (211), and the outer side of the end cap (110) is connected to a second connecting plate (130). The bodies of the first connecting plate (101), the third connecting plate (211), and the second connecting plate (130) are all provided with mounting holes.

5. The sealing structure of a removable tube bundle shell-and-tube heat exchanger according to claim 3, characterized in that: Multiple sets of guide rods (271) are evenly connected to the left side of the barrier plate (270), and the right side of the guide rods (271) penetrates the body of the limiting plate (250).

6. The sealing structure of a removable tube bundle shell-and-tube heat exchanger according to claim 4, characterized in that: The right side of the end cap (110) is connected to a first rubber pad (112), the left side of the first connecting plate (101) is connected to a third rubber block (102), and the left and right sides of the third connecting plate (211) are connected to sleeves (212).

Images