Waste heat recovery heat exchanger

Abstract

The utility model discloses a waste heat recovery heat exchanger, which belongs to the technical field of waste heat recovery, and comprises a heat exchanger shell, a heat exchange coil is fixedly connected in the heat exchanger shell in a penetrating manner, two ends of the heat exchange coil are respectively and fixedly connected with a reducing direct connector, one end of a group of reducing direct connectors is fixedly connected with a first circulating pipe, and the other end of the group of reducing direct connectors is fixedly connected with a second circulating pipe. One end of the first circulating pipe is fixedly connected with a first flange, one end of the other set of reducing pipe is fixedly connected with a second circulating pipe, and one end of the second circulating pipe is fixedly connected with a second flange. And the fan is arranged, so that the heat exchange process can be accelerated, meanwhile, the heat exchange rate can be rapidly adjusted when needed, the practicability of the device is improved, flange connection is adopted, all the parts are convenient to disassemble and independently overhauled and maintained, and the convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery heat exchanger. Background Art

[0002] In the process of industrial production, especially in the steel, chemical, petroleum, building materials, light industry and food industries, a large amount of waste heat is often generated. If this waste heat is not effectively utilized, it will not only cause a huge waste of energy, but also have a negative impact on the environment, such as increasing greenhouse gas emissions and pollutant emissions. Therefore, the development and application of waste heat recovery technology is particularly important. As a highly efficient and environmentally friendly equipment, waste heat recovery heat exchangers have emerged in this context. Using the principle of heat exchange, this part of heat energy is converted into reusable energy, such as thermal energy or electrical energy, thereby achieving energy conservation and reducing the impact on the environment. The working principle of the waste heat recovery heat exchanger is based on the basic principle of heat exchange, that is, the process of heat transfer from one medium to another.

[0003] The existing waste heat recovery heat exchangers can recycle waste heat very well, but the hot gas is slow to be discharged, and when a fault occurs inside the equipment, it is inconvenient to repair and maintain it. It is wasteful to open the equipment casing, and when the equipment fault is repaired, it will affect the normal production operation. Utility Model Content

[0004] The utility model solves the technical problems in the above-mentioned background technology and provides a waste heat recovery heat exchanger.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] The waste heat recovery heat exchanger comprises a heat exchanger shell, a heat exchange coil is fixedly connected through the heat exchanger shell, both ends of the heat exchanger coil are respectively fixedly connected with a reducing direct, one end of a group of the reducing direct is fixedly connected to a first circulation pipe, one end of the first circulation pipe is fixedly connected to a first flange, one end of another group of the reducing direct is fixedly connected to a second circulation pipe, one end of the second circulation pipe is fixedly connected to a second flange, a connecting piece is fixedly connected to the top of the heat exchanger shell, and a fixed pipe is fixedly connected to the connecting piece.

[0007] Preferably, a third flange is fixedly connected to one end of the fixed pipe away from the connecting piece, a fifth flange is provided above the third flange, bolts are slidingly connected through the third flange and the fifth flange, a first nut is threaded on the bolt, a connecting pipe is fixedly connected to the fifth flange, a fourth flange is fixedly connected to one end of the connecting pipe away from the fifth flange, and a fan is fixedly connected inside the connecting pipe.

[0008] Preferably, the heat exchanger shell is provided with an inspection and maintenance port, one side of the inspection and maintenance port is rotatably connected with an inspection door, the inspection door is provided with a connecting piece, the heat exchanger shell is fixedly connected with a threaded rod, the threaded rod is rotatably connected with a baffle, the threaded rod is threadedly connected with a second nut, the second nut is threadedly connected with a third nut, and the inspection door is provided with a groove.

[0009] Preferably, one end of the heat exchange coil passes through the heat exchanger shell, the first circulation pipe and the second circulation pipe are respectively passed through and fixedly connected to the heat exchanger shell, the first circulation pipe is located at the bottom of one side of the heat exchanger shell, the second circulation pipe is located at the top of one side of the heat exchanger shell, and the first circulation pipe and the second circulation pipe are located on the same side of the heat exchanger shell.

[0010] Preferably, the connecting member is conical in shape, the bolts and the first nuts are provided in six groups respectively and are evenly distributed on the third flange and the fifth flange, and the diameter of the third flange is consistent with the diameter of the fifth flange.

[0011] Preferably, the inspection and maintenance ports are provided with two groups and are symmetrically arranged, the baffle is L-shaped, the baffle is attached to one side of the inspection door, and the second nut and the third nut are located in the groove and attached to the baffle.

[0012] Preferably, a rubber sealing ring is provided at the joint between the inspection door and the heat exchanger shell, and the connecting pipe, the connecting piece and the inspection door are made of stainless steel.

[0013] With the above structure, the utility model has the following advantages:

[0014] 1. The utility model has a compact internal structure, which effectively improves the heat exchange efficiency, enables the waste heat to be more fully recycled, and is provided with a fan to speed up the heat exchange process. At the same time, when necessary, the heat exchange rate can be quickly adjusted, thereby improving the practicality of the device. Moreover, through the flange connection, each part can be easily disassembled and repaired and maintained separately, thereby improving the convenience of the device.

[0015] 2. In the utility model, by opening the inspection door, the heat exchange coil in the heat exchanger shell can be inspected and maintained from the inspection and maintenance port, and impurities generated on the heat exchange coil can be cleaned to avoid affecting the heat exchange. In addition, a sealing rubber ring is provided at the joint between the inspection door and the heat exchanger shell to ensure the sealing of the heat exchanger during operation and prevent heat loss and leakage.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the waste heat recovery heat exchanger of the utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the waste heat recovery heat exchanger of the utility model. Figure 2 ;

[0020] Figure 3 It is a cross-sectional view of the waste heat recovery heat exchanger of the utility model;

[0021] Figure 4 yes Figure 1 Enlarged view of point A in .

[0022] As shown in the figure: 1. Heat exchanger shell; 2. Heat exchange coil; 3. Different diameter direct; 4. First circulation pipe; 5. First flange; 6. Second circulation pipe; 7. Second flange; 8. Fixed pipe; 9. Third flange; 10. Bolt; 11. First nut; 12. Connecting pipe; 13. Fourth flange; 14. Fan; 15. Maintenance port; 16. Maintenance door; 17. Threaded rod; 18. Baffle; 19. Second nut; 20. Third nut; 21. Buckle groove; 22. Connector; 23. Fifth flange; 24. Recess. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The utility model is further described in detail below in conjunction with the full text:

[0026] Combined with Figures 1 to 4 The waste heat recovery heat exchanger includes a heat exchanger shell 1, a heat exchange coil 2 is fixedly connected through the heat exchanger shell 1, and both ends of the heat exchange coil 2 are fixedly connected with a reducing direct 3, one end of a group of reducing direct 3 is fixedly connected with a first circulation pipe 4, one end of the first circulation pipe 4 is fixedly connected with a first flange 5, one end of another group of reducing direct 3 is fixedly connected with a second circulation pipe 6, and one end of the second circulation pipe 6 is fixedly connected with a second flange 7. A connecting piece 22 is fixedly connected to the top of the heat exchanger shell 1, and a fixed pipe 8 is fixedly connected to the connecting piece 22. The internal structure is compact, which effectively improves the heat exchange efficiency and enables the waste heat to be more fully recovered and utilized. A fan 14 is provided to speed up the heat exchange process. At the same time, when necessary, the heat exchange rate can be quickly adjusted, thereby improving the practicability of the device. Moreover, through the flange connection, each part is convenient to disassemble and repair and maintain separately, thereby improving the convenience of the device.

[0027] Among them, the end of the fixed pipe 8 away from the connecting piece 22 is fixedly connected to the third flange 9, and the fifth flange 23 is provided above the third flange 9. Bolts 10 are slidably connected through the third flange 9 and the fifth flange 23, and the first nut 11 is threadedly connected to the bolt 10. The fifth flange 23 is fixedly connected to the connecting pipe 12, and the end of the connecting pipe 12 away from the fifth flange 23 is fixedly connected to the fourth flange 13. A fan 14 is fixedly connected in the connecting pipe 12. An inspection and maintenance port 15 is provided on the heat exchanger housing 1, and one side of the inspection and maintenance port 15 is rotated The heat exchanger housing 1 is rotatably connected with an inspection door 16, on which a connecting piece 22 is provided, a threaded rod 17 is fixedly connected to the heat exchanger housing 1, a baffle 18 is rotatably connected to the threaded rod 17, a second nut 19 is threadedly connected to the threaded rod 17, a third nut 20 is threadedly connected to the second nut 19, a groove 24 is provided on the inspection door 16, one end of the heat exchange coil 2 passes through the heat exchanger housing 1, the first circulation pipe 4 and the second circulation pipe 6 are respectively passed through and fixedly connected to the heat exchanger housing 1, the first circulation pipe 4 is located at the bottom of one side of the heat exchanger housing 1, and the second circulation pipe 6 is located at the bottom of one side of the heat exchanger housing 1. The annular pipe 6 is located at the top of one side of the heat exchanger shell 1, the first circulation pipe 4 and the second circulation pipe 6 are located on the same side of the heat exchanger shell 1, the shape of the connecting piece 22 is conical, the bolts 10 and the first nuts 11 are respectively provided with six groups and are evenly distributed on the third flange 9 and the fifth flange 23, the diameter of the third flange 9 is consistent with the diameter of the fifth flange 23, the maintenance opening 15 is provided with two groups and is symmetrically arranged, the baffle 18 is L-shaped, the baffle 18 is attached to one side of the maintenance door 16, and the second nut 19 and the third nut 20 are located in the groove 24 And it is fitted to the baffle 18, and a rubber sealing ring is provided at the fitting of the inspection door 16 and the heat exchanger shell 1. The connecting pipe 12, the connecting piece 22, and the inspection door 16 are made of stainless steel. By opening the inspection door 16, the heat exchange coil 2 in the heat exchanger shell 1 can be easily inspected and maintained from the inspection and maintenance port 15, and impurities generated on the heat exchange coil 2 can be easily cleaned to avoid affecting the heat exchange. In addition, a sealing rubber ring is provided at the fitting of the inspection door 16 and the heat exchanger shell 1 to ensure the sealing of the heat exchanger during operation and prevent heat loss and leakage.

[0028] Working principle of the utility model: when in use, the first flange 5 on the first circulation pipe 4 and the second flange 7 on the second circulation pipe 6 are respectively connected to the circulation pipe of the waste heat, the waste heat circulates in the heat exchange coil 2, and is connected to the external pipe through the fourth flange 13 on the connecting pipe 12. At this time, the fan 14 can be started to discharge the heat circulating in the heat exchange coil 2 from the connecting pipe 12 for use. By removing the six sets of first nuts 11 from the bolts 10, and then removing the bolts 10 from the fifth flange 23 and the third flange 9, the connecting pipe 12 can be removed. The fan 14 installed inside can be inspected, maintained and replaced by rotating the second nut 19 and the third nut 20 on the threaded rod 17 so that they no longer fit the baffle 18. The baffle 18 can then be rotated to no longer press the inspection door 16. The inspection door 16 can then be driven to rotate on the heat exchanger shell 1 by pulling the buckle groove 21, and then the inspection door 16 can be opened. The heat exchange coil 2 fixed in the heat exchanger shell 1 can be inspected through the inspection and maintenance port 15. At the same time, the outer surface of the heat exchange coil 2 can be cleaned to prevent the heat exchange effect of the heat exchange coil 2 from being affected.

[0029] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A waste heat recovery heat exchanger, comprising a heat exchanger housing (1), characterized in that: A heat exchange coil (2) is fixedly connected through the heat exchanger shell (1), and both ends of the heat exchange coil (2) are fixedly connected with a reducing straight (3), one end of a group of the reducing straight (3) is fixedly connected to a first circulation pipe (4), one end of the first circulation pipe (4) is fixedly connected to a first flange (5), and one end of another group of the reducing straight (3) is fixedly connected to a second circulation pipe (6), and one end of the second circulation pipe (6) is fixedly connected to a second flange (7). A connecting piece (22) is fixedly connected to the top of the heat exchanger shell (1), and a fixed pipe (8) is fixedly connected to the connecting piece (22).

2. The waste heat recovery heat exchanger according to claim 1, characterized in that: A third flange (9) is fixedly connected to one end of the fixed pipe (8) away from the connecting piece (22); a fifth flange (23) is provided above the third flange (9); bolts (10) are slidably connected through the third flange (9) and the fifth flange (23); a first nut (11) is threadedly connected to the bolt (10); a connecting pipe (12) is fixedly connected to the fifth flange (23); a fourth flange (13) is fixedly connected to one end of the connecting pipe (12) away from the fifth flange (23); and a fan (14) is fixedly connected inside the connecting pipe (12).

3. The waste heat recovery heat exchanger according to claim 2, characterized in that: The heat exchanger housing (1) is provided with an inspection and maintenance opening (15), one side of the inspection and maintenance opening (15) is rotatably connected to an inspection door (16), the inspection door (16) is provided with a connecting piece (22), a threaded rod (17) is fixedly connected to the heat exchanger housing (1), a baffle (18) is rotatably connected to the threaded rod (17), a second nut (19) is threadedly connected to the threaded rod (17), a third nut (20) is threadedly connected to the second nut (19), and a groove (24) is provided on the inspection door (16).

4. The waste heat recovery heat exchanger according to claim 3, characterized in that: One end of the heat exchange coil (2) passes through the heat exchanger shell (1); the first circulation pipe (4) and the second circulation pipe (6) respectively pass through and are fixedly connected to the heat exchanger shell (1); the first circulation pipe (4) is located at the bottom of one side of the heat exchanger shell (1); the second circulation pipe (6) is located at the top of one side of the heat exchanger shell (1); and the first circulation pipe (4) and the second circulation pipe (6) are located on the same side of the heat exchanger shell (1).

5. The waste heat recovery heat exchanger according to claim 4, characterized in that: The connecting member (22) is conical in shape, and six groups of the bolts (10) and the first nuts (11) are respectively provided and evenly distributed on the third flange (9) and the fifth flange (23). The diameter of the third flange (9) is consistent with the diameter of the fifth flange (23).

6. The waste heat recovery heat exchanger according to claim 5, characterized in that: The inspection and maintenance opening (15) is provided with two groups and is symmetrically arranged. The baffle (18) is L-shaped. The baffle (18) is attached to one side of the inspection door (16). The second nut (19) and the third nut (20) are located in the groove (24) and attached to the baffle (18).

7. The waste heat recovery heat exchanger according to claim 6, characterized in that: A rubber sealing ring is provided at the joint between the inspection door (16) and the heat exchanger shell (1); the connecting pipe (12), the connecting piece (22) and the inspection door (16) are made of stainless steel.

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