Heat exchanger for heat supply engineering

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a heat exchanger for heat supply engineering, which comprises a heat exchanger shell, a heat exchanger tube head is arranged on one side of the heat exchanger shell, a first flange plate is fixedly connected to the outer wall of the heat exchanger shell, and a second flange plate is fixedly connected to the outer wall of the heat exchanger tube head. A plurality of circular holes are formed in the first flange plate and the second flange plate in a penetrating manner; a plurality of hexagonal holes are formed in one end of the second flange plate and are communicated with the circular holes; through structures such as a bolt, a circular hole, a bolt, a hexagonal hole, a first flange plate, a second flange plate, a spring, a limiting ring and a hexagonal groove, limiting of the nut is completed, the situation of looseness in the using process is prevented, the stability is improved, and the sealing performance is further improved; the problems that due to the fact that a nut of a traditional heat exchanger is fatigued and loosened in the long-time using process, the connection stability is affected, and leakage occurs are solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a heat exchanger for heating engineering. Background Technology

[0002] A heat exchanger is a device used to transfer heat between two fluids at different temperatures. In heating engineering, it plays an important role in transferring heat energy from heat source equipment to indoor radiators to meet the heating needs of buildings.

[0003] Chinese patent provides a combined tubular heat exchanger, publication number CN221223455U, which includes a tube body, a support leg fixedly connected to the bottom of the tube body, a cold liquid inlet fixedly connected to the top outer surface of the tube body, a cold liquid outlet fixedly connected to the bottom outer surface of the tube body, and a tube head provided at the left end of the tube body.

[0004] The heat exchanger described above transfers heat between the hot medium inside multiple U-shaped tubes and the cold medium outside the U-shaped tubes. Because the contact area between the medium inside and outside the U-shaped tubes is large, it can provide a large heat exchange area and achieve higher heat exchange efficiency. However, during the assembly process, it is installed with the help of bolts and nuts. Due to fatigue and loosening of the nuts during long-term use, the stability of the connection is affected, which may lead to leakage. Utility Model Content

[0005] The purpose of this utility model is to provide a heat exchanger for heating engineering, so as to solve the problem that the nuts of existing heat exchangers may become fatigued and loose during long-term use, thereby affecting the stability of the connection and causing leakage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger for heating engineering, comprising a heat exchanger shell, a heat exchanger tube head disposed on one side of the heat exchanger shell, a first flange fixedly connected to the outer wall of the heat exchanger shell, and a second flange fixedly connected to the outer wall of the heat exchanger tube head. Both the first and second flanges have multiple circular holes. One end of the second flange has multiple hexagonal holes communicating with the circular holes. Bolts are disposed on the inner walls of the multiple hexagonal holes and the multiple circular holes. Nuts are threaded onto the outer walls of the multiple bolts. Multiple guide posts are fixedly connected to the end of the first flange away from the second flange. Limiting discs are fixedly connected to the other ends of the multiple guide posts. Limiting rings are disposed on the outer walls of the multiple guide posts. Multiple hexagonal grooves are disposed on the end of the limiting rings near the first flange. Springs are fixedly connected between the limiting rings and the multiple limiting discs.

[0007] Preferably, an annular groove is provided at one end of the heat exchanger tube head near the heat exchanger shell, and an annular airbag is fixedly connected to the inner wall of the annular groove.

[0008] Preferably, a fixing ring is fixedly connected to one end of the heat exchanger shell near the heat exchanger tube head, and the thickness of the fixing ring is less than the thickness of the annular groove.

[0009] Preferably, an annular sealing groove is provided on the inner side of the fixing ring at one end of the heat exchanger shell, and an annular rubber gasket is provided on the inner wall of the annular sealing groove.

[0010] Preferably, a sealing ring is fixedly connected to the inner side of the annular groove at one end of the heat exchanger tube head, and the sealing ring and the annular rubber gasket are matched in shape.

[0011] Preferably, a heat exchange tube is provided inside the heat exchanger shell, and a circular plate is fixedly connected to the outer wall of the heat exchange tube, and the circular plate is fixedly connected to the heat exchanger shell.

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

[0013] 1) The heat exchanger used in this heating project can ensure a sealing effect and prevent leakage during use by cooperating with the sealing ring, annular sealing groove, annular rubber gasket, fixing ring 16, annular groove 14 and annular airbag 15.

[0014] 2) The heat exchanger used in this heating project uses bolts, circular holes, hexagonal holes, a first flange, a second flange, springs, a limiting ring, and a hexagonal groove to limit the nut, prevent loosening during use, improve stability, and further enhance sealing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a heat exchanger for heating engineering according to the present invention;

[0016] Figure 2 This is a bottom perspective view of a heat exchanger for heating engineering according to the present invention;

[0017] Figure 3 This is a partial diagram of a heat exchanger for heating engineering according to the present invention;

[0018] Figure 4 This is a separate perspective view of a heat exchanger for heating engineering according to the present invention;

[0019] Figure 5 This is a cross-sectional view of the heat exchanger shell of a heat exchanger for heating engineering according to this utility model.

[0020] In the diagram: 1. Heat exchanger shell; 2. Heat exchanger tube head; 3. First flange; 4. Second flange; 5. Circular hole; 6. Hexagonal hole; 7. Bolt; 8. Nut; 9. Guide post; 10. Limiting plate; 11. Limiting ring; 12. Hexagonal groove; 13. Spring; 14. Annular groove; 15. Annular airbag; 16. Fixing ring; 17. Annular sealing groove; 18. Annular rubber gasket; 19. Sealing ring. 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] Example 1

[0023] Combination Figures 1-5 A heat exchanger for heating engineering includes a heat exchanger shell 1, a heat exchanger tube head 2 disposed on one side of the heat exchanger shell 1, a first flange 3 fixedly connected to the outer wall of the heat exchanger shell 1, and a second flange 4 fixedly connected to the outer wall of the heat exchanger tube head 2. Both the first flange 3 and the second flange 4 have multiple circular holes 5. One end of the second flange 4 has multiple hexagonal holes 6 communicating with the circular holes 5. Bolts 7 are disposed on the inner walls of the multiple hexagonal holes 6 and the multiple circular holes 5, and the outer walls of the multiple bolts 7 are threaded with... Nut 8, multiple guide posts 9 are fixedly connected to the end of the first flange 3 away from the second flange 4, and limit plates 10 are fixedly connected to the other end of each guide post 9. Limit rings 11 are provided on the outer wall of the multiple guide posts 9. Multiple hexagonal grooves 12 are opened on the end of the limit rings 11 near the first flange 3. Springs 13 are fixedly connected between the limit rings 11 and the multiple limit plates 10. Heat exchange tubes are provided inside the heat exchanger shell 1. A circular plate is fixedly connected to the outer wall of the heat exchange tubes. The circular plate is fixedly connected to the heat exchanger shell 1.

[0024] Specifically, the heat exchanger shell 1 and the heat exchanger tube head 2 are connected together by the first flange 3 and the second flange 4. Then, the bolts 7 are passed through the circular holes 5 in sequence, and the hexagonal blocks on the bolts 7 are locked in the hexagonal holes 6 to limit the bolts 7. Then, the nuts 8 are installed on the bolts 7, thus completing the fixed connection of the first flange 3 and the second flange 4. Therefore, the heat exchanger shell 1 and the heat exchanger tube head 2 can be fixed together. At this time, the elastic return action of the spring 13 can reset the limiting ring 11 and lock the nuts 8 in the hexagonal groove 12 to limit and fix the nuts 8. This can prevent loosening during use, avoid leakage, and improve stability.

[0025] Example 2

[0026] See Figure 4 and Figure 5 Furthermore, based on Embodiment 1, an annular groove 14 is provided at one end of the heat exchanger tube head 2 near the heat exchanger shell 1. An annular airbag 15 is fixedly connected to the inner wall of the annular groove 14. A fixing ring 16 is fixedly connected at one end of the heat exchanger shell 1 near the heat exchanger tube head 2. The thickness of the fixing ring 16 is less than the thickness of the annular groove 14. An annular sealing groove 17 is provided at one end of the heat exchanger shell 1 corresponding to the inner side of the fixing ring 16. An annular rubber gasket 18 is provided on the inner wall of the annular sealing groove 17. A sealing ring 19 is fixedly connected at one end of the heat exchanger tube head 2 corresponding to the inner side of the annular groove 14. The shapes of the sealing ring 19 and the annular rubber gasket 18 are compatible.

[0027] Specifically, the fixing ring 16 is inserted into the annular airbag 15, and the annular airbag 15 wraps around one end of the fixing ring 16, thereby sealing it. The heat exchanger shell 1 and the heat exchanger tube head 2 can be connected through the cooperation of the sealing ring 19 and the annular sealing groove 17. The sealing is further improved by the cooperation of the rubber gasket 18.

[0028] In actual operation, the sealing ring 19 is first inserted into the annular sealing groove 17 to connect and limit the heat exchanger shell 1 and the heat exchanger tube head 2. At the same time, the fixing ring 16 is inserted into the annular groove 14 and squeezes the annular air bag 15, and the annular air bag 15 is wrapped around the outer wall of the fixing ring 16, so as to ensure the sealing effect and prevent leakage during use.

[0029] Then, the bolt 7 is inserted into the circular hole 5, and the hexagonal block on the bolt 7 is locked into the hexagonal hole 6. Then, the nut 8 is installed on the outer wall of the bolt 7, thereby completing the fixed installation of the first flange 3 and the second flange 4. Then, the heat exchanger shell 1 and the heat exchanger tube head 2 can be installed together. Then, the elastic action of the spring 13 can move the limiting ring 11 towards the first flange 3, and the hexagonal groove 12 is locked into the outer wall of the nut 8, completing the limiting of the nut 8, preventing loosening during use, improving stability, and further improving the sealing performance.

[0030] 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 the 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 exchanger for heating engineering, comprising a heat exchanger shell (1), wherein a heat exchanger tube head (2) is provided on one side of the heat exchanger shell (1), characterized in that: A first flange (3) is fixedly connected to the outer wall of the heat exchanger shell (1), and a second flange (4) is fixedly connected to the outer wall of the heat exchanger tube head (2). Both the first flange (3) and the second flange (4) have multiple circular holes (5). One end of the second flange (4) has multiple hexagonal holes (6) that communicate with the circular holes (5). Bolts (7) are installed on the inner walls of both the hexagonal holes (6) and the circular holes (5), and the outer walls of the bolts (7) are threaded. The flange is provided with nuts (8). The end of the first flange (3) away from the second flange (4) is fixedly connected with a plurality of guide posts (9). The other end of the plurality of guide posts (9) is fixedly connected with a limiting plate (10). The outer wall of the plurality of guide posts (9) is provided with a limiting ring (11). The end of the limiting ring (11) near the first flange (3) is provided with a plurality of hexagonal grooves (12). A spring (13) is fixedly connected between the limiting ring (11) and the plurality of limiting plates (10).

2. A heat exchanger for heating engineering according to claim 1, characterized in that: The heat exchanger tube head (2) has an annular groove (14) at one end near the heat exchanger shell (1), and an annular airbag (15) is fixedly connected to the inner wall of the annular groove (14).

3. A heat exchanger for heating engineering according to claim 2, characterized in that: A fixing ring (16) is fixedly connected to one end of the heat exchanger shell (1) near the heat exchanger tube head (2), and the thickness of the fixing ring (16) is less than the thickness of the annular groove (14).

4. A heat exchanger for heating engineering according to claim 3, characterized in that: An annular sealing groove (17) is provided on one end of the heat exchanger shell (1) corresponding to the inner side of the fixing ring (16), and an annular rubber pad (18) is provided on the inner wall of the annular sealing groove (17).

5. A heat exchanger for heating engineering according to claim 4, characterized in that: A sealing ring (19) is fixedly connected to the inner side of the annular groove (14) at one end of the heat exchanger tube head (2), and the sealing ring (19) and the annular rubber gasket (18) are compatible in shape.

6. A heat exchanger for heating engineering according to claim 1, characterized in that: The heat exchanger shell (1) is provided with a heat exchange tube inside, and a circular plate is fixedly connected to the outer wall of the heat exchange tube. The circular plate is fixedly connected to the heat exchanger shell (1).

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