Efficient shell-and-tube heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses an efficient shell-and-tube heat exchanger which comprises a shell, and the outer wall of the shell is fixedly connected with a liquid inlet pipe. The efficient shell-and-tube heat exchanger is provided with the water tank, the flange tube, the mounting groove, the collecting box, the filter screen, the first sealing ring, the fixing bolt and the round handle, when a shell pass medium enters the water tank from the flange tube, the filter screen is arranged to filter and block the shell pass medium, and the design of the circular truncated cone-shaped filter screen can increase the filter area and improve the filter efficiency; impurities in a shell pass medium are intercepted by the filter screen and fall into the collecting box to be collected, the situation that the impurities enter the shell and accumulate at the heat exchange pipe and the baffle plate is avoided, the sealing performance between the collecting box and the water tank is enhanced by arranging the first sealing ring, and the shell pass medium is prevented from leaking; the collecting box can be pulled out to treat the collected impurities, so that the operation is simple, and the requirements of people are met.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a high-efficiency shell-and-tube heat exchanger. Background Technology

[0002] A shell-and-tube heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters of the process to meet the requirements of the process conditions. It is also one of the main devices for improving energy efficiency.

[0003] Shell-and-tube heat exchangers are used in nearly 30 industries, including HVAC, pressure vessels, wastewater treatment equipment, chemical industry, and petroleum. In related technologies, shell-and-tube heat exchangers include a shell, heat exchange tubes, and baffles. The tube-side medium flows in through the inlet holes of the heat exchange tubes and flows out through the outlet holes of the heat exchange tubes. The shell-side medium flows inside the shell and changes its flow direction through the baffles, thereby improving heat exchange efficiency.

[0004] The prior art patent document CN221685262U provides a shell-and-tube heat exchanger. By setting a gradient orifice with a diameter at the first end that is larger than the diameter at the second end on the baffle plate, when the shell-side medium flows through the gradient orifice, the flow velocity of the shell-side medium increases. The shell-side medium flowing out from the second end of the gradient orifice disturbs the flow dead zone, thereby reducing the flow dead zone in the shell and enhancing the heat exchange effect.

[0005] While the aforementioned existing technology enhances heat exchange efficiency by incorporating baffles, during operation, the shell-side medium enters the shell through the shell-side inlet. This medium may carry impurities, which can easily accumulate in the heat exchange tubes and baffles, affecting heat exchange performance and failing to effectively filter the impurities. This does not meet user needs. Furthermore, traditional heat exchanger covers are typically secured with bolts, requiring tools for disassembly when cleaning or repairing the heat exchange tubes, making the disassembly process cumbersome. Therefore, we need a more efficient shell-and-tube heat exchanger. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency shell-and-tube heat exchanger to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-efficiency shell-and-tube heat exchanger, including a shell, an inlet pipe fixedly connected to the outer wall of the shell, a filter assembly provided at the top of the inlet pipe, an outlet pipe fixedly connected to the outer wall of the shell, and a shell cover detachably connected to one end of the shell, with a fixing assembly provided on the inner wall of the shell cover;

[0008] The filter assembly includes a water tank, and a flange pipe is fixedly connected to the top of the water tank. An installation groove is provided on the inner wall of the water tank, and a collection box is slidably connected to the inner wall of the installation groove. A filter screen is fixedly connected to the inner wall of the collection box, and a first sealing ring is provided on the inner wall of the collection box. A fixing bolt is provided on the outer wall of the collection box, and a round handle is fixedly connected to the outer wall of the collection box.

[0009] The fixing component includes a sliding groove, a cover plate is fixedly connected to the inner wall of the shell cover, and a threaded groove is provided on the inner wall of the cover plate. A screw is threadedly connected to the inner wall of the threaded groove, and a locking block is rotatably connected to one end of the screw. A locking groove is provided on the inner wall of the shell.

[0010] Preferably, the inner wall of the shell cover is provided with a second sealing ring, and a heat exchange tube is fixedly connected to the inner wall of the shell cover. A baffle is provided on the outer wall of the heat exchange tube. One end of the heat exchange tube is provided with a liquid inlet, and the other end of the heat exchange tube is provided with a liquid outlet. The outer wall of the shell cover is provided with a liquid inlet and a liquid outlet. A bracket is fixedly connected to the bottom of the shell.

[0011] Preferably, the filter screen is a frustum-shaped filter screen.

[0012] Preferably, the water tank and the collection box form a sliding structure through the mounting groove, and one end of the collection box extends into the mounting groove for connection.

[0013] Preferably, the water tank is fixed to the collection box by fixing bolts, and one end of the fixing bolt is threaded through the collection box and extends into the water tank for connection.

[0014] Preferably, the cover plate forms a threaded structure with the screw through a threaded groove, and one end of the screw extends into the threaded groove for connection.

[0015] Preferably, the shape and size of the card block match the shape and size of the card slot, and one end of the card block extends into the card slot for connection.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] First, this utility model includes a water tank, flange pipe, mounting groove, collection box, filter screen, first sealing ring, fixing bolts, and round handle. When the shell-side medium enters the water tank from the flange pipe, it is filtered and blocked by the filter screen. The frustum-shaped filter screen design can increase the filtration area and improve the filtration efficiency. Impurities in the shell-side medium are intercepted by the filter screen and fall into the collection box for collection, preventing impurities from entering the shell and accumulating at the heat exchange tubes and baffles. The first sealing ring strengthens the sealing between the collection box and the water tank, preventing shell-side medium leakage. By removing the fixing bolts, the collection box can be pulled out to process the collected impurities. The operation is simple and meets people's needs.

[0018] Secondly, this utility model is equipped with a sliding groove, a cover plate, a threaded groove, a screw, a locking block, and a locking slot. When it is necessary to clean or repair the heat exchange tube, the operator can turn the screw by the handle to move the locking block out of the locking slot, making it easy to remove the shell cover and pull the heat exchange tube out of the shell. This facilitates inspection and cleaning, and the disassembly operation is simple and convenient. By setting a second sealing ring, the sealing between the shell cover and the shell is strengthened, which can effectively prevent medium leakage and ensure the sealing performance of the heat exchanger. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the shell and cover structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the water tank and collection box of this utility model;

[0022] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] The components are as follows: 1. Shell; 2. Inlet pipe; 3. Filter assembly; 301. Water tank; 302. Flange pipe; 303. Mounting groove; 304. Collection box; 305. Filter screen; 306. First sealing ring; 307. Fixing bolt; 308. Round handle; 4. Outlet pipe; 5. Shell cover; 6. Fixing assembly; 601. Slide groove; 602. Cover plate; 603. Threaded groove; 604. Screw; 605. Locking block; 606. Locking groove; 7. Second sealing ring; 8. Heat exchange tube; 9. Baffle plate; 10. Liquid inlet; 11. Liquid outlet; 12. Inlet; 13. Outlet; 14. Support. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4 As shown, a high-efficiency shell-and-tube heat exchanger includes a shell 1, an inlet pipe 2 fixedly connected to the outer wall of the shell 1, a filter assembly 3 disposed at the top of the inlet pipe 2, an outlet pipe 4 fixedly connected to the outer wall of the shell 1, and a shell cover 5 detachably connected to one end of the shell 1. A fixing assembly 6 is disposed on the inner wall of the shell cover 5. The filter assembly 3 includes a water tank 301, a flange pipe 302 fixedly connected to the top of the water tank 301, an installation groove 303 formed on the inner wall of the water tank 301, and a collection box 304 slidably connected to the inner wall of the installation groove 303. A filter screen 305 is fixedly connected to the inner wall, and a first sealing ring 306 is provided on the inner wall of the collection box 304. A fixing bolt 307 is provided on the outer wall of the collection box 304, and a round handle 308 is fixedly connected to the outer wall of the collection box 304. The fixing component 6 includes a sliding groove 601. A cover plate 602 is fixedly connected to the inner wall of the shell cover 5, and a threaded groove 603 is opened on the inner wall of the cover plate 602. A screw 604 is threadedly connected to the inner wall of the threaded groove 603, and a locking block 605 is rotatably connected to one end of the screw 604. A locking groove 606 is opened on the inner wall of the shell 1.

[0026] Through the above technical solution, when the shell-side medium enters the water tank 301 from the flange pipe 302, it is filtered and blocked by the filter screen 305. The frustum-shaped filter screen design can increase the filtration area and improve the filtration efficiency. Impurities in the shell-side medium are intercepted by the filter screen 305 and fall into the collection box 304 for collection, preventing impurities from entering the shell 1 and accumulating at the heat exchange tube 8 and baffle 9. The first sealing ring 306 strengthens the sealing between the collection box 304 and the water tank 301, preventing shell-side medium leakage. The fixing bolt 307 allows the collection box 304 to be pulled out for processing of collected impurities. The operation is simple and meets people's needs. When it is necessary to clean or repair the heat exchange tube 8, the operator can turn the screw 604 by turning the handle to remove the locking block 605 from the locking groove 606, which makes it easy to remove the shell cover 5 and pull the heat exchange tube 8 out of the shell 1. This facilitates inspection and cleaning. The disassembly operation is simple and convenient. The second sealing ring 7 enhances the sealing between the shell cover 5 and the shell 1, which can effectively prevent medium leakage and ensure the sealing performance of the heat exchanger.

[0027] Specifically, the inner wall of the shell cover 5 is provided with a second sealing ring 7, and the inner wall of the shell cover 5 is fixedly connected with a heat exchange tube 8. The outer wall of the heat exchange tube 8 is provided with a baffle 9. One end of the heat exchange tube 8 is provided with a liquid inlet 10, and the other end of the heat exchange tube 8 is provided with a liquid outlet 11. The outer wall of the shell cover 5 is provided with a liquid inlet 12 and a liquid outlet 13. The bottom of the shell 1 is fixedly connected with a bracket 14.

[0028] Through the above technical solution, the tube-side medium enters the inlet 12, enters the heat exchange tube 8 from the tube liquid inlet 10, and exits from the tube liquid outlet 11 to the outlet 13; the inner wall of the baffle plate 9 is provided with through holes and conical holes to facilitate the passage of the shell-side medium, which enhances the heat exchange effect and makes it more efficient; the bracket 14 is provided with mounting holes for easy installation; the top of the inlet pipe 2 is fixed with a water tank 301; the inner wall of the shell cover 5 is provided with a sliding groove 601.

[0029] Specifically, the filter screen 305 is a frustum-shaped filter screen.

[0030] Through the above technical solution, the design of the frustum-shaped filter screen 305 increases the filtration area, enabling the shell-side medium to be filtered more thoroughly when passing through the filter screen 305, blocking solid particles from entering the shell 1, reducing the blockage of heat exchange tubes 8 and baffles 9 by impurities, thereby maintaining the high-efficiency heat exchange performance of the heat exchanger.

[0031] Specifically, the water tank 301 and the collection box 304 form a sliding structure through the mounting groove 303, and one end of the collection box 304 extends into the mounting groove 303 for connection.

[0032] With the above technical solution, during installation, the collection box 304 can be slidably installed into the water tank 301 through the mounting groove 303 and then fixed by the fixing bolt 307. During disassembly, the fixing bolt 307 is removed and the collection box 304 is pulled out from the water tank 301, making the installation and disassembly of the collection box 304 very convenient, and facilitating the periodic removal of the collection box 304 for the treatment of collected impurities.

[0033] Specifically, the water tank 301 is fixed to the collection box 304 by fixing bolts 307, and one end of the fixing bolts 307 is threaded through the collection box 304 and extends into the water tank 301 for connection.

[0034] With the above technical solution, there are multiple fixing bolts 307, which can effectively fix the collection box 304 inside the water tank 301, prevent the collection box 304 from accidentally falling out, and enhance stability.

[0035] Specifically, the cover plate 602 forms a threaded structure with the screw 604 through the threaded groove 603, and one end of the screw 604 extends into the threaded groove 603 for connection.

[0036] With the above technical solution, when it is necessary to fix the cover 5, the screw 604 is turned by the handle, the screw 604 moves forward in the threaded groove 603, and pushes the locking block 605 to move into the locking groove 606 to abut, so as to achieve a firm connection. The installation and removal of the cover 5 can be completed without the use of complicated tools.

[0037] Specifically, the shape and size of the card block 605 match the shape and size of the card slot 606, and one end of the card block 605 extends into the card slot 606 for connection.

[0038] The above technical solution ensures that the card block 605 can be tightly inserted into the card slot 606, effectively preventing the cover 5 from loosening or falling off during operation, making the cover 5 firmly fixed, able to withstand pressure well, and ensuring the normal operation of the heat exchanger.

[0039] In operation, the shell-side medium first enters the water tank 301 through the flange pipe 302. The shell-side medium flows through the frustum-shaped filter screen 305, which effectively filters and blocks solid particulate impurities in the shell-side medium. The impurities, after being intercepted, fall into the collection box 304. The filtered shell-side medium then enters the shell 1 through the liquid inlet pipe 2. The tube-side medium enters through the liquid inlet 12 and flows into the heat exchange tubes 8 through the tube liquid inlet 10. In the heat exchange tubes 8, the tube-side medium and the shell-side medium exchange heat, passing through the baffles. 9. The turbulence of the fluid is increased, improving the heat exchange efficiency. When the heat exchange tube 8 needs to be cleaned or repaired, the operator can turn the screw 604 by the handle to move the locking block 605. The locking block 605 is removed from the locking groove 606, at which point the shell cover 5 can be easily removed. By pulling the shell cover 5, the heat exchange tube 8 can be pulled out from the shell 1 for inspection and cleaning. The disassembly operation is simple and convenient, and this completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency shell-and-tube heat exchanger, comprising a shell (1), characterized in that: The outer wall of the housing (1) is fixedly connected to an inlet pipe (2), and a filter assembly (3) is provided at the top of the inlet pipe (2). The outer wall of the housing (1) is fixedly connected to an outlet pipe (4), and a cover (5) is detachably connected to one end of the housing (1). A fixing assembly (6) is provided on the inner wall of the cover (5). The filter assembly (3) includes a water tank (301), and a flange pipe (302) is fixedly connected to the top of the water tank (301). An installation groove (303) is provided on the inner wall of the water tank (301), and a collection box (304) is slidably connected to the inner wall of the installation groove (303). A filter screen (305) is fixedly connected to the inner wall of the collection box (304), and a first sealing ring (306) is provided on the inner wall of the collection box (304). A fixing bolt (307) is provided on the outer wall of the collection box (304), and a round handle (308) is fixedly connected to the outer wall of the collection box (304). The fixing component (6) includes a sliding groove (601), a cover plate (602) is fixedly connected to the inner wall of the shell cover (5), and a threaded groove (603) is provided on the inner wall of the cover plate (602). A screw (604) is threadedly connected to the inner wall of the threaded groove (603), and a locking block (605) is rotatably connected to one end of the screw (604). A locking groove (606) is provided on the inner wall of the shell (1).

2. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The inner wall of the shell cover (5) is provided with a second sealing ring (7), and the inner wall of the shell cover (5) is fixedly connected with a heat exchange tube (8), and the outer wall of the heat exchange tube (8) is provided with a baffle plate (9). One end of the heat exchange tube (8) is provided with a liquid inlet (10), and the other end of the heat exchange tube (8) is provided with a liquid outlet (11). The outer wall of the shell cover (5) is provided with a liquid inlet (12), and the outer wall of the shell cover (5) is provided with a liquid outlet (13). The bottom of the shell (1) is fixedly connected with a bracket (14).

3. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The filter screen (305) is a frustum-shaped filter screen.

4. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The water tank (301) forms a sliding structure with the collection box (304) through the mounting groove (303), and one end of the collection box (304) extends into the mounting groove (303) for connection.

5. A high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The water tank (301) is fixed to the collection box (304) by fixing bolts (307), and one end of the fixing bolt (307) is threaded through the collection box (304) and extends into the water tank (301) for connection.

6. A high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The cover plate (602) forms a threaded structure with the screw (604) through the threaded groove (603), and one end of the screw (604) extends into the threaded groove (603) for connection.

7. A high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The shape and size of the card block (605) match the shape and size of the card slot (606), and one end of the card block (605) extends into the card slot (606) for connection.

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