Improved tubular heat exchanger

Abstract

The utility model relates to the technical field of tubular heat exchangers, and discloses an improved tubular heat exchanger which comprises a heat exchanger shell, a rear end cover is arranged at the rear end of the heat exchanger shell, a liquid outlet pipe is arranged at the end of the rear end cover, and a second connecting ring is fixedly connected to the rear end of the heat exchanger shell. A second fixing ring is fixedly connected to the outer wall of one side of the rear end cover, the second connecting ring and the second fixing ring are fixedly connected through bolts arranged at equal intervals in a surrounding mode, and a fixing plate is fixedly connected to the inner wall of the end, away from the liquid outlet pipe, of the rear end cover. The rear end cover is pulled to move, the rear end cover drives the fixing plate to transversely move, the fixing plate drives the heat exchange pipe and the connecting plate to transversely move until the heat exchange pipe and the connecting plate move to the outer side of the heat exchanger shell, and then dirt in the heat exchanger shell can be cleaned. And the heat exchange tube can be conveniently detached from the heat exchanger shell for replacement, and the heat exchanger is practical and suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of tubular heat exchangers, and in particular relates to an improved tubular heat exchanger. Background Art

[0002] Shell and tube heat exchangers, also known as tubular heat exchangers, are partition-type heat exchangers that use the wall of the tube bundle enclosed in the shell as the heat transfer surface. They have a long history of industrial application and still dominate all heat exchangers. This type of heat exchanger has a simple structure, low cost, a wide flow cross-section, and is easy to clean scale, but has a low heat transfer coefficient and occupies a large area.

[0003] At present, the heat exchange tubes in tubular heat exchangers are usually of an integrated structure. When the dirt in the heat exchanger shell needs to be cleaned or the heat exchange tubes are damaged, it is difficult to remove the heat exchange tubes from the heat exchanger shell, which makes it difficult to clean the dirt in the heat exchanger shell, increasing the difficulty and intensity of the work of the staff. In view of this, the present invention proposes an improved tubular heat exchanger to solve the above problems. Utility Model Content

[0004] In order to solve the technical problem that when it is necessary to clean the dirt inside the heat exchanger shell or the heat exchange tube is damaged, it is difficult to remove the heat exchange tube from the heat exchanger shell, resulting in difficulty in cleaning the dirt inside the heat exchanger shell, the basic concept of the technical solution adopted by the utility model is:

[0005] The heat exchanger of claim 1, wherein the rear end of the heat exchanger is provided with a rear end cover, and the end of the rear end cover is provided with a liquid outlet pipe, the rear end of the heat exchanger shell is fixedly connected to a second connecting ring, the outer wall of one side of the rear end cover is fixedly connected to a second fixing ring, the second connecting ring and the second fixing ring are fixedly connected by bolts arranged equidistantly around, the inner wall of the end of the rear end cover away from the liquid outlet pipe is fixedly connected to a fixing plate, the fixing plate is provided with a first water through hole arranged equidistantly around, and a heat exchange tube arranged equidistantly around is installed on one side of the fixing plate by bolts, the heat exchange tube is communicated with the first water through hole, the end position of the heat exchange tube is fixed with a connecting plate by bolts, the connecting plate is provided with a second water through hole arranged equidistantly around, the heat exchange tube is communicated with the second water through hole, the connecting plate is slidably arranged on the inner wall of the heat exchanger shell, and the connecting plate is located at the front end of the heat exchanger shell.

[0006] As a preferred embodiment of the present invention, a front end cover is provided at the front end of the heat exchanger shell, and a liquid inlet pipe is provided at the end of the front end cover.

[0007] As a preferred embodiment of the present invention, a first connecting ring is fixedly connected to the front end of the heat exchanger shell, and a first fixing ring is fixedly connected to the outer wall of one side of the front end cover. The first connecting ring and the first fixing ring are fixedly connected by bolts arranged equidistantly around each other.

[0008] As a preferred embodiment of the present invention, a second water hole is opened in the middle of the connecting plate, the liquid inlet pipe extends to the inside of the second water hole, and the liquid inlet pipe is slidably arranged on the inner wall of the second water hole.

[0009] As a preferred embodiment of the present invention, the inner wall of one side of the front end cover is fixedly connected to a limiting ring, and the connecting plate is in contact with the outer wall of one side of the limiting ring.

[0010] As a preferred embodiment of the present invention, an air intake pipe is installed at the top of the heat exchanger shell near the front end cover, and the air intake pipe is connected to the heat exchanger shell.

[0011] As a preferred embodiment of the present invention, an air outlet pipe is installed at the bottom of the heat exchanger shell near the rear end cover, and the air outlet pipe is connected to the heat exchanger shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] According to the utility model, when it is necessary to clean the dirt in the heat exchanger shell, the bolts on the second connecting ring and the second fixing ring are removed to separate the second connecting ring and the second fixing ring, and then the rear end cover is pulled to move, and the rear end cover drives the fixing plate to move laterally, and the fixing plate drives the heat exchange tube and the connecting plate to move laterally until the heat exchange tube and the connecting plate move to the outside of the heat exchanger shell, and then the dirt in the heat exchanger shell can be cleaned. When the heat exchange tube is damaged, it is also convenient to remove the heat exchange tube from the heat exchanger shell for replacement.

[0014] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached figure:

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat exchanger shell of the utility model;

[0019] Figure 4 This is a schematic diagram of the front end cover structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure of the fixed plate, heat exchange tube and connecting plate of the utility model;

[0021] Figure 6 This is a side structural diagram of the connection between the fixed plate, heat exchange tube and connecting plate of the utility model.

[0022] In the figure: 1. Heat exchanger housing; 2. Front cover; 3. Liquid inlet pipe; 4. First connecting ring; 5. First fixing ring; 6. Rear cover; 7. Liquid outlet pipe; 8. Second connecting ring; 9. Second fixing ring; 10. Air inlet pipe; 11. Limiting ring; 12. Fixing plate; 13. Heat exchange tube; 14. Connecting plate; 15. First water hole; 16. Second water hole; 17. Air outlet pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0024] like Figures 1 to 6 shown

[0025] A modified tubular heat exchanger comprises a heat exchanger shell 1, a rear end cover 6 is provided at the rear end of the heat exchanger shell 1, a liquid outlet pipe 7 is provided at the end of the rear end cover 6, a second connecting ring 8 is fixedly connected to the rear end of the heat exchanger shell 1, a second fixing ring 9 is fixedly connected to the outer wall of one side of the rear end cover 6, the second connecting ring 8 and the second fixing ring 9 are fixedly connected by bolts arranged equidistantly around, the inner wall of the end of the rear end cover 6 away from the liquid outlet pipe 7 is fixedly connected to a fixing plate 12, a first water hole 15 arranged equidistantly around is provided on the fixing plate 12, a heat exchange tube 13 arranged equidistantly around is installed on one side of the fixing plate 12 by bolts, the heat exchange tube 13 is connected to the first water hole 15, a connecting plate 14 is installed at the end position of the heat exchange tube 13 by bolts, a second water hole 15 arranged equidistantly around is provided on the connecting plate 14 The water hole 16 and the heat exchange tube 13 are connected to the second water hole 16, and the connecting plate 14 is slidably set on the inner wall of the heat exchanger shell 1. The connecting plate 14 is located at the front end of the heat exchanger shell 1. When it is necessary to clean the dirt in the heat exchanger shell 1, the bolts on the second connecting ring 8 and the second fixing ring 9 are removed to separate the second connecting ring 8 and the second fixing ring 9. Then, the rear end cover 6 is pulled to move. The rear end cover 6 drives the fixing plate 12 to move horizontally. The fixing plate 12 drives the heat exchange tube 13 and the connecting plate 14 to move horizontally until the heat exchange tube 13 and the connecting plate 14 move to the outside of the heat exchanger shell 1. Then, the dirt in the heat exchanger shell 1 can be cleaned. When the heat exchange tube 13 is damaged, it is also convenient to remove the heat exchange tube 13 from the heat exchanger shell 1 for replacement.

[0026] In a specific embodiment, a front end cover 2 is provided at the front end of the heat exchanger housing 1, a liquid inlet pipe 3 is provided at the end of the front end cover 2, a first connecting ring 4 is fixedly connected to the front end of the heat exchanger housing 1, a first fixing ring 5 is fixedly connected to the outer wall of one side of the front end cover 2, the first connecting ring 4 and the first fixing ring 5 are fixedly connected by bolts arranged equidistantly around each other, a second water hole 16 is opened in the middle of the connecting plate 14, the liquid inlet pipe 3 extends to the inside of the second water hole 16, and the liquid inlet pipe 3 is slidably arranged in the second water hole 1 6, a limiting ring 11 is fixedly connected to the inner wall of one side of the front cover 2, and the connecting plate 14 is in contact with the outer wall of one side of the limiting ring 11. An air inlet pipe 10 is installed at the top of the heat exchanger shell 1 near the front cover 2. The air inlet pipe 10 is connected to the heat exchanger shell 1. The air inlet pipe 10 is connected to the flue gas duct to facilitate the flue gas to enter the heat exchanger shell 1 through the air inlet pipe 10. An air outlet pipe 17 is installed at the bottom of the heat exchanger shell 1 near the rear end cover 6. The air outlet pipe 17 is connected to the heat exchanger shell 1.

[0027] The implementation principle of an improved tubular heat exchanger of this embodiment is as follows: when it is necessary to clean the dirt inside the heat exchanger shell 1, the bolts on the second connecting ring 8 and the second fixing ring 9 are removed to separate the second connecting ring 8 and the second fixing ring 9, and then the rear end cover 6 is pulled to move, and the rear end cover 6 drives the fixing plate 12 to move laterally, and the fixing plate 12 drives the heat exchange tube 13 and the connecting plate 14 to move laterally until the heat exchange tube 13 and the connecting plate 14 move to the outside of the heat exchanger shell 1, and then the dirt inside the heat exchanger shell 1 can be cleaned. When the heat exchange tube 13 is damaged, it is also convenient to remove the heat exchange tube 13 from the heat exchanger shell 1 for replacement.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An improved tubular heat exchanger, comprising a heat exchanger housing (1), characterized in that: The rear end of the heat exchanger housing (1) is provided with a rear end cover (6), and the end of the rear end cover (6) is provided with a liquid outlet pipe (7). The rear end of the heat exchanger shell (1) is fixedly connected to a second connecting ring (8), and the outer wall of one side of the rear end cover (6) is fixedly connected to a second fixing ring (9), and the second connecting ring (8) and the second fixing ring (9) are fixedly connected by bolts arranged equidistantly around. The inner wall of the end of the rear end cover (6) away from the liquid outlet pipe (7) is fixedly connected to a fixing plate (12), and the fixing plate (12) is provided with a first water hole (15) arranged equidistantly around. A heat exchange tube (13) arranged equidistantly around is installed on one side of the fixing plate (12) by bolts, and the heat exchange tube (13) is communicated with the first water hole (15). A connecting plate (14) is installed at the end position of the heat exchange tube (13) by bolts, and the connecting plate (14) is provided with a second water hole (16) arranged equidistantly around. The heat exchange tube (13) is communicated with the second water hole (16). The connecting plate (14) The connecting plate (14) is slidably arranged on the inner wall of the heat exchanger shell (1), and is located at the front end of the heat exchanger shell (1).

2. The improved tubular heat exchanger according to claim 1, characterized in that: A front end cover (2) is provided at the front end of the heat exchanger housing (1), and a liquid inlet pipe (3) is provided at the end of the front end cover (2).

3. The improved tubular heat exchanger according to claim 2, characterized in that: The front end of the heat exchanger housing (1) is fixedly connected to a first connecting ring (4), and the outer wall of one side of the front cover (2) is fixedly connected to a first fixing ring (5), and the first connecting ring (4) and the first fixing ring (5) are fixedly connected by bolts arranged equidistantly around each other.

4. The improved tubular heat exchanger according to claim 2, characterized in that: A second water hole (16) is provided in the middle of the connecting plate (14), the liquid inlet pipe (3) extends to the inside of the second water hole (16), and the liquid inlet pipe (3) is arranged on the inner wall of the second water hole (16).

5. The improved tubular heat exchanger according to claim 2, characterized in that: The inner wall of one side of the front end cover (2) is fixedly connected to a limiting ring (11), and the connecting plate (14) is in contact with the outer wall of one side of the limiting ring (11).

6. The improved tubular heat exchanger according to claim 2, characterized in that: An air intake pipe (10) is installed at a position near the front end cover (2) on the top of the heat exchanger housing (1), and the air intake pipe (10) is connected to the heat exchanger housing (1).

7. The improved tubular heat exchanger according to claim 1, characterized in that: An air outlet pipe (17) is installed at a position near the rear end cover (6) at the bottom of the heat exchanger housing (1), and the air outlet pipe (17) is connected to the heat exchanger housing (1).

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