Improved structure for bonding tube head and tube plate of graphite shell-and-tube heat exchanger

Abstract

The utility model discloses an improved structure for bonding a tube head and tube plates of a graphite shell-and-tube heat exchanger, which belongs to the technical field of heat exchanger equipment and comprises a heat exchanger shell, a bonding component and an anti-loosening component are respectively mounted in the heat exchanger shell, and the bonding component comprises two tube plates I and two tube plates II; the two first tube plates are installed on the left side and the right side of the inner wall of a heat exchanger shell correspondingly, the adjacent sides of the two first tube plates communicate with a heat exchange tube head, the two sides of the outer wall of the heat exchange tube head are slidably connected with a sealing sleeve and a fastening plate correspondingly, and first grooves used in cooperation with the sealing sleeve are formed in the outer walls of the two first tube plates correspondingly. Second grooves are formed in the outer walls of the multiple sealing sleeves; according to the utility model, the bonding structure is improved, so that the medium leakage is effectively prevented, and the safety of equipment during operation is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger equipment, in particular to an improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger. Background Technique

[0002] A shell-and-tube heat exchanger is a device that uses fluid heat transfer to achieve heat transfer. Its basic principle is to transfer heat from one fluid to another through heat conduction, convection, radiation, etc., so as to achieve heat exchange between the two fluids.

[0003] In the prior art, the end of the heat exchange tube and the tube sheet are connected by gluing. In the actual use process, the glue may age and embrittle over time, resulting in a decrease in the sealing performance between the tube head and the tube sheet of the heat exchanger. For this reason, we propose an improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: an improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger, including a heat exchanger shell, wherein a bonding component and a loosening prevention component are respectively installed inside the heat exchanger shell. The bonding component includes two tube sheets I, and the two tube sheets I are respectively installed on the left and right sides of the inner wall of the heat exchanger shell. The adjacent sides of the two tube sheets I are both communicated with the tube head of the heat exchange tube. The outer walls of both sides of the tube head of the heat exchange tube are respectively slidably connected with a sealing sleeve and a fastening plate. Grooves I for the use of the sealing sleeve are respectively opened on the outer walls of the two tube sheets I, and grooves II are respectively opened on the outer walls of the plurality of sealing sleeves:

[0006] The heat exchanger shell is the main body of the device. A tube sheet I and a heat exchange tube are installed inside the heat exchanger shell. The glue for bonding is coated on the tube head of the heat exchange tube, and the sealing sleeve is moved. The grooves II opened on the outer wall of the sealing sleeve store the flowing glue. The tube sheet I is provided with grooves I for the use of the sealing sleeve. Under the action of the glue, the sealing sleeve is bonded to the tube sheet I. At this time, the fastening plate is moved to fasten the sealing sleeve. The fastening plate effectively prevents the sealing ring from loosening under the cooperation of the loosening prevention component. The heat exchange tube and the tube sheet are adhesively bonded for the first time. At this time, the sealing sleeve cooperates with the fastening plate to realize secondary fastening and sealing of the tube sheet and the tube head. By improving the bonding structure, the leakage of the medium is effectively prevented, and the safety of the equipment during operation is greatly improved.

[0007] As a preferred technical solution of the present utility model, the anti-loosening component includes a plurality of screws, nuts and gaskets. One ends of the plurality of screws are fixedly connected to the outer wall of the first tube sheet. The other ends of the plurality of screws respectively penetrate through the fastening plate and the gasket and are threadedly connected to the nuts. Limit blocks are installed on the inner walls of the plurality of gaskets, and limit strips are installed on the outer walls of the plurality of gaskets. Limit sliding grooves for cooperating with the limit blocks are formed on both sides of the outer walls of the plurality of screws, and limit grooves for cooperating with the limit strips are formed on the outer walls of the plurality of nuts. The number of the limit strips is multiple:

[0008] Install the gasket on the outer wall of the screw. At this time, turn the nut. When the nut is turned to the appropriate position, bend the limit strip outside the gasket into the limit groove on the outer wall of the nut. At this time, the limit block is stuck in the limit sliding groove, so neither the gasket nor the nut can move, thereby achieving the anti-loosening effect, greatly improving the safety of the device during operation, and effectively avoiding the situation of fastener loosening caused by other factors, resulting in risks such as the equipment being unable to operate.

[0009] The beneficial effects of the present utility model: The heat exchange tube and the tube sheet are adhesively bonded for the first time. At this time, the sealing sleeve cooperates with the fastening plate to realize secondary fastening and sealing of the tube sheet and the tube head. By improving the bonded structure, the leakage of the medium is effectively prevented, and the safety of the equipment during operation is greatly improved.

[0010] The present utility model installs the gasket on the outer wall of the screw. At this time, turn the nut. When the nut is turned to the appropriate position, bend the limit strip outside the gasket into the limit groove on the outer wall of the nut. At this time, the limit block is stuck in the limit sliding groove, so neither the gasket nor the nut can move, thereby achieving the anti-loosening effect, greatly improving the safety of the device during operation, and effectively avoiding the situation of fastener loosening caused by other factors, resulting in risks such as the equipment being unable to operate. Description of the Drawings

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0012] Figure 2 is an internal structural schematic diagram of the heat exchange housing of the present utility model;

[0013] Figure 3 is a split structural schematic diagram of the bonding component of the present utility model;

[0014] Figure 4 is a schematic diagram of the internal groove structure of the first tube sheet of the present utility model;

[0015] Figure 5 is a schematic diagram of the internal groove structure of the sealing sleeve of the present utility model;

[0016] Figure 6Schematic structural diagram of the anti-loosening component of the present utility model;

[0017] Figure 7 Partial structural diagram of the anti-loosening component of the present utility model.

[0018] In the figure: 1. Heat exchanger shell; 2. Bonding component; 201. First tube sheet; 202. Tube head of heat exchange tube; 203. Sealing sleeve; 204. First groove; 205. Fastening plate; 206. Second groove; 3. Anti-loosening component; 301. Screw; 302. Limit sliding groove; 303. Gasket; 304. Nut; 305. Limit groove; 306. Limit block; 307. Limit strip. Specific implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all 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.

[0020] Embodiment 1

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , an improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger, including a heat exchanger shell 1. Inside the heat exchanger shell 1, a bonding component 2 and an anti-loosening component 3 are respectively installed. The bonding component 2 includes two first tube sheets 201, and the two first tube sheets 201 are respectively installed on the left and right sides of the inner wall of the heat exchanger shell 1. The adjacent sides of the two first tube sheets 201 are both communicated with the tube heads 202 of the heat exchange tubes. Sealing sleeves 203 and fastening plates 205 are respectively slidably connected to both sides of the outer wall of the tube heads 202 of the heat exchange tubes. First grooves 204 for cooperating with the sealing sleeves 203 are opened on the outer walls of the two first tube sheets 201, and second grooves 206 are opened on the outer walls of multiple sealing sleeves 203.

[0022] The heat exchanger housing 1 is the main body of the device. A first tube sheet 201 and heat exchange tubes are installed inside the heat exchanger housing 1. Glue for bonding is applied to the tube heads 202 of the heat exchange tubes. The movable seal sleeve 203 is moved. The second groove 206 formed on the outer wall of the seal sleeve 203 stores flowing glue. The first groove 204 used in cooperation with the seal sleeve 203 is formed on the first tube sheet 201. Under the action of the glue, the seal sleeve 203 is bonded to the first tube sheet 201. At this time, the movable fastening plate 205 fastens the seal sleeve 203. The fastening plate 205 effectively prevents the seal sleeve 203 from loosening under the cooperation of the anti-loosening component 3. The first bonding of the heat exchange tubes and the tube sheet is achieved by gluing. At this time, the seal sleeve 203 cooperates with the fastening plate 205 to achieve secondary fastening and sealing of the tube sheet and the tube head. By improving the bonding structure, medium leakage is effectively prevented, and the safety during the operation of the equipment is greatly improved.

[0023] Please refer to Figure 6 and Figure 7 In this embodiment, the anti-loosening component 3 includes a plurality of screws 301, nuts 304 and gaskets 303. One ends of the plurality of screws 301 are fixedly connected to the outer wall of the first tube sheet 201. The other ends of the plurality of screws 301 respectively penetrate through the fastening plate 205 and the gasket 303 and are threadedly connected to the nuts 304. Limiting blocks 306 are installed on the inner walls of the plurality of gaskets 303. Limiting strips 307 are installed on the outer walls of the plurality of gaskets 303. Limiting sliding grooves 302 used in cooperation with the limiting blocks 306 are formed on both sides of the outer walls of the plurality of screws 301. Limiting grooves 305 used in cooperation with the limiting strips 307 are formed on the outer walls of the plurality of nuts 304. The number of the limiting strips 307 is multiple.

[0024] The gasket 303 is installed on the outer wall of the screw 301. At this time, the nut 304 is screwed. When the nut 304 is screwed to a proper position, the limiting strip 307 outside the gasket 303 is bent into the limiting groove 305 on the outer wall of the nut 304. At this time, the limiting block 306 is stuck in the limiting sliding groove 302. Therefore, neither the gasket 303 nor the nut 304 can move, so as to achieve the anti-loosening effect, greatly improving the safety during the operation of the device and effectively avoiding the situation of loosening of the fasteners caused by other factors, which may lead to risks such as the equipment being unable to operate.

[0025] Working principle: Apply the adhesive glue on the tube head 202 of the heat exchange tube, move the sealing sleeve 203. The groove two 206 opened on the outer wall of the sealing sleeve 203 stores the flowing glue. The tube sheet one 201 is provided with a groove one 204 for cooperating with the sealing sleeve 203. Under the action of the glue, the sealing sleeve 203 is bonded to the tube sheet one 201. At this time, move the fastening plate 205 to fasten the sealing sleeve 203. The fastening plate 205 effectively prevents the sealing sleeve 203 from loosening with the cooperation of the anti-loosening component 3. The heat exchange tube and the tube sheet are adhesively bonded for the first time. At this time, the sealing sleeve 203 cooperates with the fastening plate 205 to achieve secondary fastening and sealing of the tube sheet and the tube head, effectively preventing the leakage of the medium. The gasket 303 is installed on the outer wall of the screw 301. At this time, turn the nut 304. When the nut 304 is turned to the appropriate position, bend the limiting strip 307 outside the gasket 303 into the limiting groove 305 on the outer wall of the nut 304. At this time, the limiting block 306 is stuck in the limiting sliding groove 302. Therefore, neither the gasket 303 nor the nut 304 can move, preventing the nut 304 from loosening due to external force and other situations.

[0026] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An improved structure for bonding the tube head and tube sheet of a graphite shell and tube heat exchanger, comprising a heat exchanger shell (1), characterized in that, Inside the heat exchanger housing (1), an adhesive assembly (2) and a loosening prevention assembly (3) are respectively installed; The adhesive assembly (2) includes two first tube sheets (201), which are respectively installed on the left and right sides of the inner wall of the heat exchanger housing (1). The adjacent sides of the two first tube sheets (201) are both communicated with the heat exchange tube headers (202). On both sides of the outer wall of the heat exchange tube headers (202), a sealing sleeve (203) and a fastening plate (205) are respectively slidably connected.

2. An improved structure for bonding the tube head and tube sheet of a graphite tube heat exchanger according to claim 1, characterized in that, The loosening prevention assembly (3) includes a plurality of screws (301), nuts (304) and gaskets (303).

3. An improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger according to claim 2, characterized in that One ends of the plurality of screws (301) are fixedly connected to the outer wall of the first tube sheet (201). The other ends of the plurality of screws (301) respectively penetrate through the fastening plate (205) and the gasket (303) and are threadedly connected to the nuts (304). Limit blocks (306) are installed on the inner walls of the plurality of gaskets (303), and limit strips (307) are installed on the outer walls of the plurality of gaskets (303). Limit sliding grooves (302) for cooperating with the limit blocks (306) are opened on both sides of the outer walls of the plurality of screws (301).

4. An improved structure for bonding the tube head and tube sheet of a graphite shell and tube heat exchanger according to claim 1, characterized in that, Grooves one (204) for cooperating with the sealing sleeve (203) are opened on the outer walls of the two first tube sheets (201).

5. An improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger according to claim 1, characterized in that, Grooves two (206) are opened on the outer walls of the plurality of sealing sleeves (203).

6. An improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger according to claim 3, characterized in that, The number of the limit strips (307) is a plurality.

7. An improved structure for bonding the tube head and tube sheet of a graphite shell-and-tube heat exchanger according to claim 2, characterized in that Limit grooves (305) for cooperating with the limit strips (307) are opened on the outer walls of the plurality of nuts (304).

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