Heat exchange device for central heating

Abstract

The utility model relates to the technical field of heat exchange devices, and discloses a heat exchange device for central heating, which comprises a shell-and-tube heat exchanger, the shell-and-tube heat exchanger comprises a shell, a water inlet pipe is movably mounted at the left end of the shell, a water outlet pipe is movably mounted at the right end of the shell, and disassembly and assembly mechanisms are arranged on the outer sides of the two ends of the shell. According to the heat exchange device for central heating, the servo motor is started to enable the gear ring to drive the threaded ring to rotate on the inner side of the spiral groove, so that the extrusion ring is separated from the outer side of the elastic block, and the elastic block is separated from the outer side of the water inlet pipe to take out the water inlet pipe. According to the heat exchange device for centralized heating, the water inlet pipe and the water outlet pipe can be mounted and dismounted by starting the gear, the downtime is shortened, manual operation is facilitated, and the cleaning efficiency in the pipe bundle is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange device technology, and more specifically, to a heat exchange device for centralized heating. Background Technology

[0002] Heat exchange devices used in centralized heating systems play a role in regulating the temperature of the supplied water. These include shell-and-tube heat exchangers, also known as tubular heat exchangers. These are indirect heat exchangers that use the walls of a bundle of tubes enclosed in a shell as the heat transfer surface. During long-term operation, impurities, precipitates, or chemical reaction products in the fluids on both the tube and shell sides of a shell-and-tube heat exchanger can form fouling, leading to decreased heat transfer efficiency, increased pressure drop, and even blockage.

[0003] Traditional heat exchangers for centralized heating systems have the following drawbacks: During operation, cleaning hard scale inside the tube bundles requires first shutting down the heat exchanger and draining the fluid; then disassembling the end caps or tube box to expose the tube bundle; and finally cleaning the inner walls of each tube individually using a pipe cleaning brush, high-pressure water gun, or pneumatic rotary tool. While bolted connections are widely used in engineering practice for shell-and-tube heat exchangers, balancing installation flexibility, maintenance convenience, and sealing reliability, large heat exchangers have a large number of bolts, resulting in lengthy disassembly and reassembly times and increased downtime. Furthermore, flange connections require reserved space for bolt operation (such as the wrench's turning radius), leading to an increase in the overall size of the equipment. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a heat exchange device for centralized heating, which has the advantage of being easy to disassemble and assemble.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat exchange device for centralized heating, comprising a shell-and-tube heat exchanger, wherein the shell-and-tube heat exchanger includes a shell, an inlet pipe is movably installed at the left end of the shell, an outlet pipe is movably installed at the right end of the shell, and a disassembly and assembly mechanism is provided on both outer sides of the shell, the disassembly and assembly mechanism including a bottom ring block fixedly installed on the outer sides of both ends of the shell, a connecting block fixedly installed at the front end of the bottom ring block, an elastic block located outside the inlet and outlet pipes fixedly installed at the front end of the connecting block, an outer ring block fixedly installed on the outer side of the bottom ring block, a threaded groove is opened on the inner side of the outer ring block, a threaded ring is threaded on the inner side of the threaded groove, and a compression ring is fixedly installed below the threaded ring, the compression ring corresponding to the elastic block.

[0006] As a preferred technical solution of this utility model, a heat exchange mechanism is provided inside the shell. The heat exchange mechanism includes circular plates fixedly installed at both ends of the shell. Three limiting plates are fixedly installed inside the shell. The three limiting plates are arranged vertically from left to right. Tube bundles penetrating the limiting plates are uniformly fixedly installed on the surface of the circular plates.

[0007] As a preferred embodiment of this utility model, an installation block is fixedly installed on the outer side of the outer ring block, a servo motor is fixedly installed on the outer side of the installation block, a gear is fixedly installed at the front end of the servo motor, and a toothed ring is fixedly installed on the outer side of the threaded ring.

[0008] As a preferred embodiment of this utility model, an air inlet pipe is fixedly installed on the upper left end of the housing, and an air outlet pipe is fixedly installed on the upper right end of the housing.

[0009] As a preferred embodiment of this utility model, a slot is provided on the inner side of the water outlet pipe, and an insert plate extending into the slot is fixedly installed on the outer side of the housing.

[0010] As a preferred embodiment of this utility model, a base is fixedly installed on the lower part of the housing. There are two bases in total, and the two bases are respectively installed on the lower ends of the housing.

[0011] In a preferred embodiment of this invention, the length of the gear corresponds to the length of the threaded groove, and the gear meshes with the threaded ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a servo motor to drive the toothed ring to rotate the threaded ring inside the threaded groove, causing the compression ring to disengage from the outer side of the elastic block, thereby disengaging the elastic block from the outer side of the water inlet pipe and removing the water inlet pipe. Compared with traditional heat exchange devices for centralized heating, this heat exchange device for centralized heating can complete the installation and disassembly of the water inlet and outlet pipes by starting the gear, reducing downtime, facilitating manual operation, and improving the cleaning efficiency of the pipe bundle.

[0014] 2. This utility model uses limiting plates to restrict the hot air, allowing the hot air to circulate up and down and move to the right end, thereby ensuring uniform heating of the tube bundle. Compared with traditional heat exchange devices for centralized heating, this heat exchange device for centralized heating uses multiple limiting plates to restrict the path of the hot air, ensuring full contact with the tube bundle, thus improving the heat exchange effect and making it easier to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0018] Figure 4 This is a schematic diagram of the heat exchange mechanism of this utility model;

[0019] Figure 5 This is an exploded structural diagram of the disassembly and assembly mechanism of this utility model.

[0020] In the diagram: 1. Shell-and-tube heat exchanger; 11. Shell; 12. Base; 13. Inlet pipe; 14. Outlet pipe; 15. Inlet pipe; 16. Outlet pipe; 2. Assembly / disassembly mechanism; 201. Bottom ring block; 202. Connecting block; 203. Elastic block; 204. Outer ring block; 205. Threaded groove; 206. Threaded ring; 207. Extrusion ring; 208. Gear ring; 209. Mounting block; 210. Servo motor; 211. Gear; 212. Slot; 213. Insert plate; 3. Heat exchange mechanism; 31. Circular plate; 32. Limiting plate; 33. Tube bundle. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 5 As shown, this utility model provides a heat exchange device for centralized heating, including a shell-and-tube heat exchanger 1. The shell-and-tube heat exchanger 1 includes a shell 11. A water inlet pipe 13 is movably installed at the left end of the shell 11, and a water outlet pipe 14 is movably installed at the right end of the shell 11. Disassembly and assembly mechanisms 2 are provided on the outer sides of both ends of the shell 11. The disassembly and assembly mechanism 2 includes a bottom ring block 201 fixedly installed on the outer sides of both ends of the shell 11. A connecting block 202 is fixedly installed at the front end of the bottom ring block 201. An elastic block 203 located outside the water inlet pipe 13 and the water outlet pipe 14 is fixedly installed at the front end of the connecting block 202. An outer ring block 204 is fixedly installed on the outer side of the bottom ring block 201. A threaded groove 205 is opened on the inner side of the outer ring block 204. A threaded ring 206 is threaded on the inner side of the threaded groove 205. A compression ring 207 is fixedly installed below the threaded ring 206. The compression ring 207 corresponds to the elastic block 203.

[0023] In use, when it is necessary to clean the dirt inside the tube bundle 33, simply place a trolley or similar object under the inlet pipe 13 and outlet pipe 14, then start the servo motor 210, which drives the gear 211 to rotate. The gear 211 drives the gear ring 208 to rotate, which in turn drives the threaded ring 206 to rotate inside the threaded groove 205. This causes the compression ring 207 to move outward, disengaging it from the outer side of the elastic block 203. At this time, the front end of the elastic block 203 releases its elastic potential energy and moves outward, thus disengaging the elastic block 203 from the outer side of the inlet pipe 13. Then, push the trolley or similar object to remove the inlet pipe 13, thereby cleaning the inside of the tube bundle 33.

[0024] By starting the servo motor 210, the gear ring 208 drives the threaded ring 206 to rotate inside the threaded groove 205, causing the compression ring 207 to disengage from the outer side of the elastic block 203. This allows the elastic block 203 to disengage from the outer side of the inlet pipe 13, thus removing the inlet pipe 13. Compared with traditional heat exchange devices for centralized heating, this heat exchange device for centralized heating can complete the installation and disassembly of the inlet pipe 13 and the outlet pipe 14 by starting the gear 211, reducing downtime, facilitating manual operation, and improving the cleaning efficiency inside the tube bundle 33.

[0025] The shell 11 is equipped with a heat exchange mechanism 3. The heat exchange mechanism 3 includes a circular plate 31 fixedly installed at both ends of the shell 11. Three limiting plates 32 are fixedly installed inside the shell 11. The three limiting plates 32 are installed vertically and vertically from left to right. Tube bundles 33 that penetrate the limiting plates 32 are evenly fixedly installed on the surface of the circular plate 31.

[0026] Water to be heated is injected through the inlet pipe 13, which moves through the tube bundle 33 to the inside of the outlet pipe 14 and then discharged. Hot air is injected into the inside of the shell 11 through the air inlet pipe 15 and blocked by the limiting plate 32, so that the hot air circulates up and down and moves to the right end, thereby making the tube bundle 33 heated evenly. Then the heat exchanged hot air is discharged through the air outlet pipe 16, thus completing the heat exchange cycle operation.

[0027] By limiting the hot air with the limiting plate 32, the hot air is moved to the right end in a vertical circulation, so that the tube bundle 33 is heated evenly. Compared with the traditional heat exchange device for centralized heating, this heat exchange device for centralized heating limits the path of the hot air by setting multiple limiting plates 32, so that it can fully contact the tube bundle 33, thereby improving the heat exchange effect and making it easier to use.

[0028] Among them, an installation block 209 is fixedly installed on the outer side of the outer ring block 204, a servo motor 210 is fixedly installed on the outer side of the installation block 209, a gear 211 is fixedly installed on the front end of the servo motor 210, and a toothed ring 208 is fixedly installed on the outer side of the threaded ring 206.

[0029] Start the servo motor 210, which drives the gear 211 to rotate, which in turn drives the gear ring 208 to rotate, thereby causing the threaded ring 206 to rotate inside the threaded groove 205.

[0030] An air inlet pipe 15 is fixedly installed on the upper left end of the housing 11, and an air outlet pipe 16 is fixedly installed on the upper right end of the housing 11.

[0031] Hot air is injected into the interior of the housing 11 through the air inlet pipe 15 and then discharged through the air outlet pipe 16, thus realizing the circulation of hot air.

[0032] The water outlet pipe 14 has a slot 212 on its inner side, and the outer side of the housing 11 is fixedly installed with a plate 213 extending into the slot 212.

[0033] When assembling the housing 11 with the water outlet pipe 14, the insert plate 213 is inserted into the slot 212 to position it and also to increase the sealing effect.

[0034] Among them, a base 12 is fixedly installed on the bottom of the housing 11. There are two bases 12 in total, and the two bases 12 are respectively installed on the bottom of the two ends of the housing 11.

[0035] By setting two bases 12 to support the shell 11, the force on the two bases 12 is evenly distributed, thus improving the support effect.

[0036] The length of gear 211 corresponds to the length of screw groove 205, and gear 211 meshes with threaded ring 206.

[0037] The length of gear 211 corresponds to the length of threaded groove 205, thereby enabling gear 211 to drive threaded ring 206 to move up and down and rotate.

[0038] Working principle and usage process of this utility model:

[0039] In use, when it is necessary to clean the dirt inside the tube bundle 33, simply place a trolley or similar object under the inlet pipe 13 and outlet pipe 14, then start the servo motor 210, which drives the gear 211 to rotate. The gear 211 drives the gear ring 208 to rotate, which in turn drives the threaded ring 206 to rotate inside the threaded groove 205. This causes the compression ring 207 to move outward, disengaging it from the outer side of the elastic block 203. At this time, the front end of the elastic block 203 releases its elastic potential energy and moves outward, thus disengaging the elastic block 203 from the outer side of the inlet pipe 13. Then, push the trolley or similar object to remove the inlet pipe 13, thereby cleaning the inside of the tube bundle 33.

[0040] Water to be heated is injected through the inlet pipe 13, which moves through the tube bundle 33 to the inside of the outlet pipe 14 and then discharged. Hot air is injected into the inside of the shell 11 through the air inlet pipe 15 and blocked by the limiting plate 32, so that the hot air circulates up and down and moves to the right end, thereby making the tube bundle 33 heated evenly. Then the heat exchanged hot air is discharged through the air outlet pipe 16, thus completing the heat exchange cycle operation.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 heat exchange device for centralized heating, comprising a shell-and-tube heat exchanger (1), characterized in that: The shell-and-tube heat exchanger (1) includes a shell (11), an inlet pipe (13) is movably installed at the left end of the shell (11), and an outlet pipe (14) is movably installed at the right end of the shell (11). Disassembly and assembly mechanisms (2) are provided on the outer sides of both ends of the shell (11). Each disassembly and assembly mechanism (2) includes a bottom ring block (201) fixedly installed on the outer sides of both ends of the shell (11). A connecting block (202) is fixedly installed at the front end of the bottom ring block (201). 2) An elastic block (203) is fixedly installed at the front end of the water inlet pipe (13) and the water outlet pipe (14) outside the water inlet pipe (13). An outer ring block (204) is fixedly installed on the outer side of the bottom ring block (201). A threaded groove (205) is opened on the inner side of the outer ring block (204). A threaded ring (206) is threaded on the inner side of the threaded groove (205). A compression ring (207) is fixedly installed below the threaded ring (206). The compression ring (207) corresponds to the elastic block (203).

2. The heat exchange device for central heating according to claim 1, characterized in that: The shell (11) is provided with a heat exchange mechanism (3). The heat exchange mechanism (3) includes a circular plate (31) fixedly installed at both ends of the shell (11). Three limiting plates (32) are fixedly installed inside the shell (11). The three limiting plates (32) are installed in sequence from left to right. Tube bundles (33) that penetrate the limiting plates (32) are evenly fixedly installed on the surface of the circular plate (31).

3. The heat exchange device for central heating according to claim 1, characterized in that: An mounting block (209) is fixedly installed on the outer side of the outer ring block (204), a servo motor (210) is fixedly installed on the outer side of the mounting block (209), a gear (211) is fixedly installed on the front end of the servo motor (210), and a toothed ring (208) is fixedly installed on the outer side of the threaded ring (206).

4. The heat exchange device for central heating according to claim 1, characterized in that: An air inlet pipe (15) is fixedly installed on the upper left end of the housing (11), and an air outlet pipe (16) is fixedly installed on the upper right end of the housing (11).

5. The heat exchange device for central heating according to claim 1, characterized in that: The water outlet pipe (14) has a slot (212) on its inner side, and the outer side of the housing (11) is fixedly installed with a plate (213) extending into the slot (212).

6. The heat exchange device for central heating according to claim 1, characterized in that: A base (12) is fixedly installed below the housing (11). There are two bases (12), which are respectively installed below the two ends of the housing (11).

7. The heat exchange device for central heating according to claim 3, characterized in that: The length of the gear (211) corresponds to the length of the threaded groove (205), and the gear (211) meshes with the threaded ring (206).

Images