Tubular heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a tubular heat exchanger which comprises a tube body, a front sealing plate fixedly installed at the left end of the tube body, a rear sealing plate fixedly installed at the right end of the tube body, a front cover fixedly installed on the left side of the front sealing plate, and a horizontal partition plate fixedly installed in the middle of the front cover and on the left side of the front sealing plate. A plurality of communicating pipes which are symmetrically distributed up and down are evenly and fixedly installed on the side face of the front sealing plate, each communicating pipe penetrates through and is connected with the front sealing plate in an inserted mode, a rear cover is arranged on the right side of the rear sealing plate, through openings which are the same as the communicating pipes in number and correspond to the communicating pipes one to one are evenly formed in the side face of the rear sealing plate, and a plurality of U-shaped heat exchange pipes are arranged in the pipe body. According to the heat exchanger, the heat exchange tubes in the heat exchanger can be taken out conveniently, then the taken-out heat exchange tubes can be disassembled and assembled, and therefore the blocked heat exchange tubes can be cleaned or overhauled.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically a tubular heat exchanger. Background Technology

[0002] A heat exchanger is a device that transfers part of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used. Tubular heat exchangers are equipped with multiple stacked heat exchange tubes installed inside. The heat exchange tubes are often U-shaped. When the stacked U-shaped heat exchange tubes become blocked, it is not convenient to clean the heat exchange tubes, and the heat exchange tubes cannot be removed from the device. As a result, the heat exchange efficiency of the heat exchanger gradually decreases after long-term use. To address this, this application proposes a tubular heat exchanger. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides the following technical solution: a tubular heat exchanger, comprising a tube body, a front sealing plate fixedly installed at the left end of the tube body, a rear sealing plate fixedly installed at the right end of the tube body, a front cover fixedly installed on the left side of the front sealing plate, a horizontal partition fixedly installed in the middle of the front cover and on the left side of the front sealing plate, a plurality of symmetrically distributed connecting pipes evenly and fixedly installed on the side of the front sealing plate, each connecting pipe penetrating and inserting into the front sealing plate, a rear cover provided on the right side of the rear sealing plate, and a number of openings evenly opened on the side of the rear sealing plate corresponding to the number of connecting pipes, a plurality of U-shaped heat exchange tubes provided inside the tube body, the two horizontal and vertical parts of each heat exchange tube penetrating and inserting into the corresponding openings on the rear sealing plate, and the two horizontal and vertical ends of the heat exchange tube penetrating the openings respectively connecting to the corresponding connecting pipes.

[0004] Preferably, the heat exchange tubes consist of two horizontal tubes and a bent tube. The two horizontal tubes extend through the through-hole into the tube body, and one end of each horizontal tube inside the tube body can be threaded onto the right end of the corresponding connecting tube. The bent tube is located inside the rear cover, and both ends of the bent tube are respectively connected to the end of the horizontal tube located on the right side of the rear sealing plate. A connecting ring is threaded onto the joint between the bent tube and the horizontal tube.

[0005] Preferably, a fixing ring is fixedly installed at the right end of each of the two horizontal tubes, and an annular groove is opened on the inner wall of the connecting ring. The fixing ring is located in the annular groove on the inner wall of the connecting ring. Four rod grooves are evenly opened at the right end of each horizontal tube. Four insert rods are fixedly installed at both ends of the bend. When the bend and the horizontal tube are connected, the insert rods at both ends of the bend are respectively inserted into the rod grooves at one end of the corresponding horizontal tube.

[0006] Preferably, the connecting pipes connected to the upper horizontal pipes of each heat exchanger tube are located above the partition in the front cover, and the connecting pipes connected to the lower horizontal pipes of each heat exchanger tube are located below the partition in the front cover.

[0007] Preferably, a cold liquid inlet pipe connected to the top of the front cover is fixedly installed, a cold liquid outlet pipe connected to the bottom of the front cover is fixedly installed, a hot liquid outlet pipe connected to the top of the left end of the pipe body is fixedly installed, and a hot liquid inlet pipe connected to the bottom of the right end of the pipe body is fixedly installed.

[0008] Preferably, a sealing plate is fixedly installed on the left end of the outer wall of the rear cover, the left side of the sealing plate is fitted with the right end of the rear sealing plate, and a bolt threadedly connected to the rear sealing plate is inserted through the right side of the sealing plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] By removing the back cover and then twisting the connector on the heat exchange tube, the horizontal tube and the curved tube of the heat exchange tube can be separated. Then, by rotating the horizontal tube, its left end can be separated from the connecting tube. In this way, the horizontal tube can be taken out from the opening on the back cover plate. The removed heat exchange tube can then be cleaned and inspected smoothly, thus avoiding the situation where the heat exchange tube is blocked and cannot be dealt with. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate 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, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of a partial cross-section of the present invention;

[0014] Figure 3 This is an exploded view of the present invention;

[0015] Figure 4 This is a partial structural schematic diagram of the heat exchange tube of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the horizontal tube and the bent tube of this utility model;

[0017] Figure 6 This is an enlarged structural diagram of point A in this utility model;

[0018] In the diagram: 1. Pipe body; 2. Front sealing plate; 3. Rear sealing plate; 4. Front cover; 5. Partition plate; 6. Cold inlet pipe; 7. Cold outlet pipe; 8. Connecting pipe; 9. Hot outlet pipe; 10. Hot inlet pipe; 11. Port; 12. Heat exchanger pipe; 121. Horizontal pipe; 122. Bend; 123. Connecting ring; 124. Fixing ring; 13. Rear cover; 14. Sealing plate; 15. Bolt; 16. Annular groove; 17. Insert rod. Detailed Implementation

[0019] 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.

[0020] Depend on Figure 1-6 The present invention includes a tube body 1, a front sealing plate 2 fixedly installed at the left end of the tube body 1, a rear sealing plate 3 fixedly installed at the right end of the tube body 1, a front cover 4 fixedly installed at the left side of the front sealing plate 2, a horizontal partition 5 fixedly installed in the middle of the front cover 4 and the left side of the front sealing plate 2, a plurality of symmetrically distributed connecting pipes 8 evenly and fixedly installed on the side of the front sealing plate 2, each connecting pipe 8 penetrating and inserting into the front sealing plate 2, a rear cover 13 provided on the right side of the rear sealing plate 3, and a number of openings 11 evenly opened on the side of the rear sealing plate 3 corresponding to the number of connecting pipes 8, a plurality of U-shaped heat exchange tubes 12 provided inside the tube body 1, the two horizontal and vertical parts of each heat exchange tube 12 penetrating and inserting into the rear sealing plate 3 and the corresponding openings 11, and the two horizontal and vertical ends of the heat exchange tube 12 penetrating the openings 11 respectively connecting to the corresponding connecting pipes 8.

[0021] like Figure 4 and Figure 5 As shown, the heat exchange tube 12 has two horizontal tubes 121 and a bent tube 122. The two horizontal tubes 121 extend through the opening 11 into the tube body 1, and one end of the two horizontal tubes 121 inside the tube body 1 can be threaded onto the right end of the corresponding connecting tube 8. The bent tube 122 in the heat exchange tube 12 is located inside the rear cover 13. The two ends of the bent tube 122 are respectively connected to the end of the horizontal tube 121 located on the right side of the rear cover plate 3. A connecting ring 123 is threaded onto the connection point of the bent tube 122 and the horizontal tube 121. By rotating the connecting ring 123, it can be threaded onto the connection point of the horizontal tube 121 and the bent tube 122, thus completing the connection between the two. By twisting the connecting ring 123 to disengage it from the bent tube 122, the two can be separated. Then, by rotating the horizontal tube 121, its left end can be separated from the connecting tube 8. In this way, the horizontal tube 121 in the heat exchange tube 12 can be taken out from the opening 11 on the rear cover plate 3.

[0022] like Figure 5 and Figure 6 As shown, a fixing ring 124 is fixedly installed at the right end of each of the two horizontal tubes 121. An annular groove 16 is opened on the inner wall of the connecting ring 123. The fixing ring 124 is located in the annular groove 16 on the inner wall of the connecting ring 123. Four rod grooves are evenly opened at the right end of each horizontal tube 121. Four insert rods 17 are fixedly installed at both ends of the bent tube 122. When the bent tube 122 is connected to the horizontal tube 121, the insert rods 17 at both ends of the bent tube 122 are respectively inserted into the rod grooves at one end of the corresponding horizontal tube 121. The fixing ring 124 and the connecting ring 123 can stably connect the horizontal tube 121 and the bent tube 122 together. With the cooperation of the insert rods 17 and the rod grooves, the horizontal tube 121 and the bent tube 122 can be neatly connected together.

[0023] like Figure 2 and Figure 3 As shown, the connecting pipe 8 connected to the upper horizontal pipe 121 of each heat exchange tube 12 is located above the partition 5 in the front cover 4, and the connecting pipe 8 connected to the lower horizontal pipe 121 of each heat exchange tube 12 is located below the partition 5 in the front cover 4. This allows the liquid that has not undergone heat exchange to flow smoothly into the heat exchange tube 12.

[0024] like Figure 1 and Figure 2 As shown, a cold liquid inlet pipe 6 is fixedly installed on the top of the front cover 4 and connected to it, a cold liquid outlet pipe 7 is fixedly installed on the bottom of the front cover 4 and connected to it, a hot liquid outlet pipe 9 is fixedly installed on the top of the left end of the pipe body 1 and connected to it, and a hot liquid inlet pipe 10 is fixedly installed on the bottom of the right end of the pipe body 1 and connected to it, so that the exchange of heat between the two liquids can be completed.

[0025] like Figure 1 and Figure 3 As shown, a sealing plate 14 is fixedly installed on the left end of the outer wall of the rear cover 13. The left side of the sealing plate 14 is in contact with the right end of the rear cover 3. A bolt 15 threadedly connected to the rear cover 3 is inserted through the right side of the sealing plate 14. The sealing plate 14 can be fixedly installed on the side of the rear cover 3 by the bolt 15, so that the rear cover 13 can be fixedly installed on the rear cover 3.

[0026] 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.

[0027] 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 tubular heat exchanger, comprising a tube body (1), characterized in that: A front sealing plate (2) is fixedly installed at the left end of the pipe body (1), and a rear sealing plate (3) is fixedly installed at the right end of the pipe body (1). A front cover (4) is fixedly installed on the left side of the front sealing plate (2). A horizontal partition (5) is fixedly installed in the middle of the front cover (4) and on the left side of the front sealing plate (2). Multiple symmetrically distributed connecting pipes (8) are evenly and fixedly installed on the side of the front sealing plate (2). Each connecting pipe (8) penetrates and is inserted into the front sealing plate (2). The rear sealing plate... (3) has a rear cover (13) on the right side. The rear cover plate (3) has openings (11) that are the same number as the connecting pipes (8) and correspond one-to-one. The pipe body (1) has multiple U-shaped heat exchange tubes (12). The two horizontal and vertical parts of each heat exchange tube (12) are inserted through the rear cover plate (3) and the corresponding openings (11). The two horizontal and vertical ends of the heat exchange tube (12) through the openings (11) are connected to the corresponding connecting pipes (8).

2. A tubular heat exchanger according to claim 1, characterized in that: The heat exchange tube (12) consists of two horizontal tubes (121) and a bent tube (122). The two horizontal tubes (121) in the heat exchange tube (12) extend through the through-hole (11) into the tube body (1). The two ends of the two horizontal tubes (121) inside the tube body (1) can be threaded onto the right end of the corresponding connecting tube (8). The bent tube (122) in the heat exchange tube (12) is located inside the rear cover (13). The two ends of the bent tube (122) are respectively connected to the end of the horizontal tube (121) located on the right side of the rear sealing plate (3). A connecting ring (123) is threaded onto the joint between the bent tube (122) and the horizontal tube (121).

3. A tubular heat exchanger according to claim 2, characterized in that: A fixing ring (124) is fixedly installed at the right end of each of the two horizontal tubes (121). An annular groove (16) is opened on the inner wall of the connecting ring (123). The fixing ring (124) is located in the annular groove (16) on the inner wall of the connecting ring (123). Four rod grooves are evenly opened at the right end of each horizontal tube (121). Four insert rods (17) are fixedly installed at both ends of the bent tube (122). When the bent tube (122) is connected to the horizontal tube (121), the insert rods (17) at both ends of the bent tube (122) are respectively inserted into the rod groove at one end of the corresponding horizontal tube (121).

4. A tubular heat exchanger according to claim 1, characterized in that: The connecting pipe (8) connected to the upper horizontal pipe (121) of each heat exchange tube (12) is located above the partition (5) in the front cover (4), and the connecting pipe (8) connected to the lower horizontal pipe (121) of each heat exchange tube (12) is located below the partition (5) in the front cover (4).

5. A tubular heat exchanger according to claim 1, characterized in that: A cold liquid inlet pipe (6) connected to the top of the front cover (4) is fixedly installed, a cold liquid outlet pipe (7) connected to the bottom of the front cover (4) is fixedly installed, a hot liquid outlet pipe (9) connected to the top of the left end of the pipe body (1) is fixedly installed, and a hot liquid inlet pipe (10) connected to the bottom of the right end of the pipe body (1) is fixedly installed.

6. A tubular heat exchanger according to claim 1, characterized in that: A sealing plate (14) is fixedly installed on the left end of the outer wall of the rear cover (13). The left side of the sealing plate (14) is in contact with the right end of the rear cover (3). A bolt (15) threadedly connected to the rear cover (3) is inserted through the right side of the sealing plate (14).

Images